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100 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 101 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 12
4. Optional Functions
4.1 8 °C Heating(Heat pump units)
In heating mode, the temperature can be set to as low
as 8°C, preventing the indoor area from freezing if
unoccupied during severe cold weather.
4.2 Follow me
• If you press “Follow Me” on the remote, the indoor
unit will beep. This indi... | |
101 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 102 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 12
5. Remote Controller Functions
5.1 Infrared Wireless Remote Controller
5.1.1 RG10A(B2S)/BGEF (Standard for some units)
Remote Controller Specifications
Model RG10A(B2S)/BGEF
Rated Voltage 3.0V (Dry batteries R03/LR03×2)
Reaching Distance 8m
Environment Temperature Range -5°C~60°C(23°F~140°F )
B... | |
102 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 103 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 13
Remote LCD Screen Indicators
Note:
All indicators shown in the figure are for the purpose of clear presentation. But during the actual
operation, only the relative function signs are shown on the display window. | |
103 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 104 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 14
5.1.2 RG10B(B2)/BGEF (Standard for some units)
Remote Controller Specifications
Model RG10B(B2)/BGEF
Rated Voltage 3.0V (Dry batteries R03/LR03×2)
Reaching Distance 8m
Environment Temperature Range -5°C~60°C(23°F~140°F )
Buttons and Functions
ON/OFF
SET
Turns the unit on or o ff.
MODE
OK
TIMER... | |
104 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 105 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 15
Remote LCD Screen Indicators
ECO display
GEAR display
LOCK display
Horizontal louver
swing display
Vertical louver auto
swing display
TURBO mode display
Not available for
this unit
Temperature/Timer/Fan speed
display
Active clean/Self clean feature display
Fresh feature display
Sleep mode dis... | |
105 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 106 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 16
5.1.3 RG10L3(2HS)/BGEFU1 (Standard for some units)
Remote Controller Specifications
Model RG10L3(2HS)/BGEFU1
Rated Voltage 3.0V (Dry batteries R03/LR03×2)
Reaching Distance 8m
Environment Temperature Range -5°C~60°C(23°F~140°F )
Buttons and Functions
ON/OFF
Turns the unit on or o ff. MODE
OK
T... | |
106 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 107 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 17
Remote LCD Screen Indicators
ECO display
GEAR display
LOCK display
Horizontal louver
swing display
Vertical louver auto
swing display
TURBO mode display
Not applicalbe for
this unit
Temperature/Timer/Fan speed
display
Active clean feature display
Fresh feature display
Sleep mode display
Follo... | |
107 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 108 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 18
5.2 LCD Wired Remote Controller
5.2.1 LCD Wired Remote Controller KJR-12B/DP(T)
The KJR-12B/DP(T) wired remote controller is standard for Duct type and is optional for some types.
i) Buttons and Functions
.0%ᦖ/
5*.&30''#6550/
"69*-*"3:&-&$53*$"-)&"5&3
3&4&5#6550/
0/0''#6550/
"%+645... | |
108 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 109 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 19
iii) Installation
• Dimensions
120mm
(4.7”)
120mm
(4.7”)
21mm
(0.8”)
51.1mm
(2”)
13.1mm
(0.5”)
85.5mm
(3.3”)
50mm
(1.9”)
19.5mm
(0.7”)
• Wiring diagram
Refer to the following diagram to wire the wall-mounted remote control to the indoor unit.
$PSF4IJFME$BCMF
8JSF+PJOU
Q
*OGSBSFE1JQ... | |
109 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 110 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 20
Putty
Putty Putty
Trap
Trap
Trap
Note: DO NOT allow water to enter the remote control. Use the trap and putty to seal the wires.
• For exposed mounting, cut holes on four of the sides according to the picture below.
Cut three holes
for wire outlet
Cut one holes
for wire outlet
• For shielded ... | |
110 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 111 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 21
5.2.2 LCD Wired Remote Controller KJR-120C/TF-E(Optional)
The KJR-120C/TF-E wired remote controller is optional for some types.
i) Buttons and Functions
N
O
P
Q
RS
TU
V
NM NN
NO
NP
ëï áåÖ ëï áåÖ
7. FOLLOW ME(PTC) button
Allows the remote control to act as a remote thermostat
and send temperatur... | |
111 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 112 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 22
ii) LCD Screen
8 PTC function indication
9 C° / F° indication
10 Temperature display
11 Lock indication
12 Room temperature indication
13 Clock display
14 On/Off timer
15 Timer display
1 Operation mode indication
2 Fan speed indication
3 Left-right swing indication
4 Up-down swing indicat... | |
112 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 113 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 23
iii) Installation
• Dimensions
120
122
18.5
83.5
46
62
• Wiring diagram
Refer to the following diagram to wire the wall-mounted remote control to the indoor unit.
red
black
yellow
brown
red
black
yellow
brown
Insert of the
mainboard CN40
Wire controller Indoor unit mainboard
4-Core Shield... | |
113 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 114 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 24
Putty
Putty Putty
Trap
Trap
Trap
Note: DO NOT allow water to enter the remote control. Use the trap and putty to seal the wires.
• For exposed mounting, four outletting positions. There are three need cutting.
Cutting place of top
side wire outlet
Cutting place of left
side wire outlet
Cuttin... | |
114 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 115 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 25
5.2.3 LCD Wired Remote Controller KJR-120G/TF-E(Optional)
The KJR-120G/TF-E wired remote controller is optional for some types.
i) Buttons and Functions
1
Swing Timer Back/ Turbo Co py/
Follow me
Mode
Fan speed
(Lock)
- +
2
3
4
3
5
6
7
8
9
10
1 MODE button
Used to select the operation mode: Aut... | |
115 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 116 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 26
ii) LCD Screen
8 Turbo/PTC function indication
9 C° / F° indication
10 Temperature display
11 Lock indication
12 Room temperature indication
13 Clock display
14 On/Off timer
15 Timer display
1 Operation mode indication
2 Fan speed indication
3 Left-right swing indication
4 Up-down swing i... | |
116 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 117 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 27
iii) Installation
• Dimensions
123mm
(4.8”)
120mm
(4.7”)
18.5mm
(0.7”)
83.5mm
(3.3”)
46mm
(1.8”)
62mm
(2.4”)
• Wiring diagram
1) Connection
For Cassette: The wired controller connects to main control board directly.
HA HB
HA HB
Main control board
Wired controller
ADSS
0123456789ABCDE... | |
117 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 118 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 28
2) Address setting
HA HB
HA HB
Unit1
Wired controller
HA HB
Unit2
HA HB
Unit16
a. One non-polarity controller can control up to 16 indoor units.
b. When the non-polarity controller is connected to several units, every air-conditioner in network has only one
network address to distin... | |
118 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 119 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 29
Putty
Putty Putty
Trap
Trap
Trap
Note: DO NOT allow water to enter the remote control. Use the trap and putty to seal the wires.
• For wiring the indoor unit, there are four methods:
• From the rear;
• From the bottom;
• From the top;
• From the top center.
PCB
PCB
PCB
PCB
HA HB
1
2
HA ... | |
119 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 120 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 30
5.2.4 LCD Wired Remote Controller KJR-120X/TFBG-E (Optional)
The KJR-120X/TFBG-E wired remote controller is optional for some types.
i) Buttons and Functions
3
1
2
10
7
9
4
5
6 11
8
1. POWER button
Turn on of turn off the unit.
2 MODE button
Used to select the operation mode: Auto / Cooling / Dr... | |
120 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 121 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 31
ii) LCD Screen
12 34 5 7
8
9
10
11
12
14 13
6
1 Operation mode indication
2 Fan speed indication
3 Temperature display
4 Lock indication
5 °C / °F indication
6 Main unit and secondary unit
indication
7 Turbo function indication
8 Room temperature indication
9 Rotating indication... | |
121 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 122 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 32
iii) Installation
• Dimensions
19mm84mm
46mm
60mm
44mm
120mm
120mm 20mm
3) Connection
• Wire with the indoor unit:
HA HB
1
44mm
60mm Wiringhole
switch box
A B
• 1: Indoor Unit.
• 2: Notch the part for the wiring to pass through with a nipper tool.
• Connect the terminals on the remote control... | |
122 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 123 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 33
For some models: The wired controller connects to terminal board, terminal board connects to main control board.
HA HB
HA HB
Terminal board
Wired controller
ENC1
Main control board
CN2 CN40
4
0123456789ABCDEF
4
4) Address setting
HA HB
HA HB
Unit1
Wired controller
HA HB
Unit2
... | |
123 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 124 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Product Features 34
5.3 Centralized Controller
1) Connection
For Light commercial air conditioner with XYE port, it can be directly connected to Centralized Controller (CCM03, CCM09).
2) Address setting
When setting the address, please make sure the unit is powered off. The address can be set from 0 to 63 by the s... | |
124 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 125 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Contents
1. Safety Caution .......................................................................................................3
2. General Troubleshooting ......................................................................................4
3. Information Inquiry .................................................. | |
125 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 126 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Contents
6.9 PC 04 (Inverter Compressor Drive Error Diagnosis and Solution) ...................27
6.10 PC 03 (High Pressure Protection or low Pressure Protection Diagnosis and
Solution) ......................................................................................................28
6.11 PC 02 (Top temperature... | |
126 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 127 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 3
1. Safety Caution
WARNING
Be sure to turn off all power supplies or disconnect all wires to avoid electric shock.
While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist
strap to avoid damage to the board.
WARNING
Electricity remains in capacitors even when the... | |
127 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 128 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 4
2. General Troubleshooting
2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer
lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the followi... | |
128 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 129 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 5
7 times FLASH PC 00 IPM malfunction or IGBT over-strong current protection TS25
2 times FLASH PC 01 Over voltage or over low voltage protection TS26
3 times FLASH PC 02 Top temperature protection of compressor or High temperature
protection of IPM module TS31
5 times FLASH PC 04 Inverter compress... | |
129 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 130 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 6
3. Information Inquiry
• To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “ON/OFF
+ Air Speed” for 7s:
• After entering the engineer mode, the remote control will display icons of “Auto, Cool, Dry, Heat”, and the Battery
icon; at the same ti... | |
130 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 131 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 7
rror code of engineer mode
Display Error Information
EH 00/EH 0A Indoor unit EEPROM parameter error
EL 01 Indoor / outdoor unit communication error
EH A Communication error between indoor unit and indoor external fan module
EH 30 Parameters error of indoor external fan
EH 31 Upper indoor fan spee... | |
131 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 132 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 8
PC 00 IPM malfunction or IGBT over-strong current protection
PC 10 Over low voltage protection
PC 11 Over voltage protection
PC 12 DC voltage protection
pc 02 Top temperature protection of compressor or High temperature protection of IPM module
PC 40 Communication error between outdoor main chip a... | |
132 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 133 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 9
4. Error Diagnosis and Troubleshooting Without Error Code
WARNING
Be sure to turn off unit before any maintenance to prevent damage or injury.
4.1 Remote maintenance
SUGGESTION: When troubles occur, please check the following points with customers before field maintenance.
No. Problem Solution
1 ... | |
133 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 134 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 10
4.2 Field maintenance
Problem Solution
1 Unit will not start TS13 - TS14
2 Compressor will not start but fans run TS13 - TS14
3 Compressor and condenser (outdoor) fan will not start TS13 - TS14
4 Evaporator (indoor) fan will not start TS13 - TS14
5 Condenser (Outdoor) fan will not start TS13 - TS... | |
134 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 135 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 11
1.Remote Maintenance
Possible causes of trouble
Power failure
The main power tripped
Loose connections
Faulty transformer
The voltage is too high or too low
The remote control is powered off
Broken remote control
Dirty air filter
Dirty condenser fins
The setting temperature is higher/lower than t... | |
135 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 136 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 12
1.Remote Maintenance
Possible causes of trouble
Heavy load condition
Loosen hold down bolts and / or screws
Bad airproof
The air inlet or outlet of either unit is blocked
Interference from cell phone towers and remote boosters
Shipping plates remain attached
Unit will not start
The power switch ... | |
136 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 137 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 13
2.Field Maintenance
Possible causes of trouble
Compressor stuck
Shortage of refrigerant
Restricted liquid line
Dirty air filter
Dirty evaporator coil
Insufficient air through evaporator coil
Overcharge of refrigerant
Dirty or partially blocked condenser
Air or incompressible gas in refrigerant cy... | |
137 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 138 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 14
2.Field Maintenance
Possible causes of trouble
Power failure
Blown fuse or varistor
Loose connections
Shorted or broken wires
Safety device opens
Faulty thermostat / room temperature sensor
Wrong setting place of temperature sensor
Faulty transformer
Shorted or open capacitor
Faulty magnetic cont... | |
138 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 139 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 15
5. Quick Maintenance by Error Code
If you do not have the time to test which specific parts are faulty, you can directly change the required parts according
the error code.
You can find the parts to replace by error code in the following table.
Part requiring
replacement
Error Code
EH 00/EH
0... | |
139 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 140 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 16
6. Troubleshooting by Error Code
6.1 EH 00/ EH 0A / EC 51 (EEPROM Parameter Error Diagnosis and Solution)
Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Recommended parts to prepare:
• Indoor PCB
• Outdoor PCB
Troubleshooting and repair:
Shut off the pow... | |
140 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 141 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 17
6.2 EL 01 (Indoor and Outdoor Unit Communication Error Diagnosis and Solution)
Description: Indoor unit can not communicate with outdoor unit
Recommended parts to prepare:
• Indoor PCB
• Outdoor PCB
• Reactor
Troubleshooting and repair:
Does the error code
disappear?
Power off, then restart the... | |
141 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 142 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 18
Remarks:
• Use a multimeter to test the DC voltage between 2 port(or S or L2 port) and 3 port(or N or S port) of outdoor unit.
The red pin of multimeter connects with 2 port(or S or L2 port) while the black pin is for 3 port(or N or S port) .
• When AC is operating normally, the voltage is mo... | |
142 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 143 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 19
6.3 EH 03 / EH 31/EH 32/ EC 07 (Fan Speed Is Operating Outside of Normal Range
Diagnosis and Solution)
Description: When indoor / outdoor fan speed keeps too low or too high for a certain time, the unit ceases operation
and the LED displays the failure.
Recommended parts to prepare:
• Connectio... | |
143 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 144 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 20
Index:
1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor)
Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the
value of the voltage is not in the range showing in below table, the PCB must has problems and need to be r... | |
144 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 145 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 21
12345
NO. Signal Voltage
1 Vcc +15V
2 GND
3 TXD 0~6V
4 RXD 0~15V
5 -- --
3. Outdoor DC Fan Motor (control chip is in outdoor PCB)
Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not equal to each other, the
fan motor must has problems and need to be repla... | |
145 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 146 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 22
6.4 EH 60/EH 61/EC 53/EC 52/EC 54 (Open Circuit or Short Circuit of Temperature Sensor
Diagnosis and Solution)
Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.
Recommended parts to prepare:
• Connection wires
• Sensors
• PCB
Troublesho... | |
146 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 147 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 23
6.5 EL 0C (Refrigerant Leakage Detection Diagnosis and Solution)
Description: Define the evaporator coil temperature T2 of the compressor just starts running as Tcool.
In the beginning 5 minutes after the compressor starts up, if T2 Tcool-1°C(1.8°F) does not keep continuous 4 seconds
and comp... | |
147 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 148 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 24
6.6 EH 0E(Water-Level Alarm Malfunction Diagnosis and Solution)
Description: If the sampling voltage is not 5V, the LED displays the failure code.
Recommended parts to prepare:
• Connection wires
• Water-level switch
• Water pump
• Indoor PCB
Shut off the power supply and
turn it on 2 minutes l... | |
148 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 149 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 25
6.7 PC 00(IPM malfunction or IGBT over-strong current protection Diagnosis and Solution)
Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED shows
“PC 00” and the AC turn off.
Recommended parts to prepare:
• Connection wires
• IPM module b... | |
149 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 150 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 26
6.8 PC 01(Over voltage or too low voltage protection Diagnosis and Solution)
Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit.
Recommended parts to prepare:
• Power supply wires
• IPM module board
• PCB
• Reactor
Troubleshoo... | |
150 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 151 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 27
6.9 PC 04(Inverter compressor drive error Diagnosis and Solution)
Description: An abnormal inverter compressor drive is detected by a special detection circuit, including communication
signal detection, voltage detection, compressor rotation speed signal detection and so on.
Recommended parts to... | |
151 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 152 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 28
6.10 PC 03(High pressure protection or Low Pressure Protection Diagnosis and Solution)
Description: Outdoor pressure switch cut off the system because high pressure is higher than 4.4 MPa or outdoor
pressure switch cut off the system because low pressure is lower than 0.13 MPa, the LED displays ... | |
152 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 153 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 29
Are the high pressure switch
and main control boar wired
correctly?
Are the high pressure switch
and main control boar wired
correctly?
Method: Disconnect the plug.
Measure the resistance of the
high pressure protector, if the
protector is normal the value is
o, Does a problem still exi... | |
153 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 154 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 30
Low pressure protection Low pressure protection
Are the low pressure protector
and main control board wired
properly?
Are the low pressure protector
and main control board wired
properly?
Yes
Reconnect the low pressure protector
and main control board
Reconnect the low pressure protector
a... | |
154 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 155 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 31
6.11 PC 02(Top temperature protection of compressor or High temperature protection of
IPM module diagnosis and solution)
Description: For some models with overload protection, If the sampling voltage is not 5V, the LED will display the failure.
If the temperature of IPM module is higher than a ... | |
155 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 156 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 32
Check the fastening screws on the
PCB and IPM radiator.
Are they
fixed tightly?
Replace the outdoor
control PCB.
Tighten the screws and apply
silicon grease.
NO
YES
6.12 PC 0L (Low ambient temperature protection)
Description: It is a protection function. When compressor is off, outdoor ambien... | |
156 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 157 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 33
6.14 EH 0b(Communication error between display board and main board diagnosis and
solution)
Description: Indoor PCB does not receive feedback from the display board.
Recommended parts to prepare:
• Communication wire
• Indoor PCB
• Display board
Troubleshooting and repair:
Is it still displaying... | |
157 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 158 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 34
6.15 EH b3 (Communication error between wired controller and indoor unit Diagnosis and
Solution
Description: If Indoor PCB does not receive feedback from wired controller, the error displays on the wired controller
Recommended parts to prepare:
• Connection wires
• Indoor PCB
• Wired controller... | |
158 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 159 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 35
6.16 EH bA(Communication malfunction between external fan module and indoor unit)/
EH 3A(External fan DC bus voltage is too low protection)/ EH 3b(External fan DC bus
voltage is too high fault) diagnosis and solution
Description: Indoor unit does not receive the feedback from external fan module... | |
159 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 160 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 36
6.17 FH 07(Communication malfunction between indoor unit and auto-lifting panel)
diagnosis and solution
Description: Indoor PCB does not get the feedback from the PCB of auto-lifting panel.
Recommended parts to prepare:
• Connection wires
• PCB of auto-lifting panel
• Indoor PCB
Troubleshooting... | |
160 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 161 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 38
8. Check Procedures
8.1 Temperature Sensor Check
WARNING
Be sure to turn off all power supplies or disconnect all wires to avoid electric shock.
Operate after compressor and coil have returned to normal temperature in case of injury.
1. Disconnect the temperature sensor from PCB (Refer to Chap... | |
161 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 162 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 39
Resistance
Value KSN98D64UFZ3 KSN140D21UFZ KTM240D43UKT KTM240D57UMT
Blue-Red
2.7Ω 1.28Ω 1.03Ω 0.62ΩBlue-Black
Red-Black
Resistance
Value
KTF250D22UMT
ATF235D22TMT KSN140D58UFZ KTF310D43UMT
ATF310D43TMT
KTQ420D1UMU
ATQ420D1SN5A1
Blue-Red
0.75Ω 1.86Ω 0.65Ω 0.37ΩBlue-Black
Red-Black
Resistance Va... | |
162 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 163 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 40
Note: The picture and the value are only for reference, actual condition and specific value may vary. | |
163 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 164 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Troubleshooting 41
8.3 IPM Continuity Check
WARNING
Electricity remains in capacitors even when the power supply is off.
Ensure the capacitors are fully discharged before troubleshooting.
1. Turn off outdoor unit and disconnect power supply.
2. Discharge electrolytic capacitors and ensure all energy-storage uni... | |
164 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 165 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Contents
1. Indoor Unit Disassembly .......................................................................................1
1.1 Filter ..............................................................................................................2
1.2 Display Board ...................................................... | |
165 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 166 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 2
1. Indoor Unit Disassembly
1.1 Filter
Procedure Illustration
1) Hold the both sides of front panel
and open the front panel. (see CJ_
CONSOLE2_001)
2) Remove the string from the hook. (see
CJ_CONSOLE2_002)
CJ_CONSOLE2_001
CJ_CONSOLE2_002
Note: This section is for reference only. Actual u... | |
166 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 167 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 3
Procedure Illustration
3) Pull out the filter (see CJ_
CONSOLE2_003)
CJ_CONSOLE2_003
Note: This section is for reference only. Actual unit appearance may vary. | |
167 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 168 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 4
1.2 Display Board
Note: Remove the front panel (refer to 1.1. filter) before disassembling display board.
Procedure Illustration
1) Remove 1 screw and remove the
display box subassembly(see CJ_
CONSOLE2_004)
2) Pry open the display light box.(see CJ_
CONSOLE2_005)
3) Remove the display bo... | |
168 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 169 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 5
1.3 Panel Frame Subassembly
Note: Remove the front panel (refer to 1.1. filter) before disassembling panel frame subassembly.
Procedure Illustration
1) Remove 7 screws and remove the
panel frame subassembly(see CJ_
CONSOLE2_006)
CJ_CONSOLE2_006
Note: This section is for reference only. Ac... | |
169 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 170 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 6
1.4 Upper Air Outlet Frame Assembly
Note: Remove the front panel and panel frame subassembly (refer to 1.1. Filter&1.3 Panel frame subassembly)
before disassembling upper air outlet frame assembly.
Procedure Illustration
1) Remove 3 screws and remove the
upper air outlet frame assembly.... | |
170 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 171 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 7
Procedure Illustration
3) Take out the positive and negative ion
generator upward, and pull out the
positive and negative ion emitter(see
CJ_CONSOLE2_009)(for some units)
CJ_CONSOLE2_009
Note: This section is for reference only. Actual unit appearance may vary. | |
171 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 172 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 8
1.5 Lower Air Outlet Frame Assembly
Note: Remove the front panel and panel frame subassembly (refer to 1.1. Filter&1.3 Panel frame subassembly)
before disassembling lower air outlet frame assembly.
Procedure Illustration
1) Remove 3 screws and remove the
lower air outlet frame assembly.... | |
172 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 173 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 9
1.6 Evaporator
Note: Remove the front panel, panel frame subassembly,upper air outlet frame assembly and lower air outlet
frame assembly (refer to 1.1,1.3,1.4&1.5 ) before disassembling evaporator.
Procedure Illustration
1) Remove 1 screw and remove auxiliary
water pan.(see CJ_CONSOLE2_... | |
173 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 174 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 10
1.7 Fan and Fan Motor
Note: Remove the evaporator subassembly (refer to 1.1, 1.3, 1.4, 1.5 and 1.6) before disassembling fan.
Procedure Illustration
1) Remove 1 screw and 1 hook,and
remove the motor cover(there are two
motor cover). (see CJ_CONSOLE2_014)
2) Pull out the fan motor and ... | |
174 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 175 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Indoor Unit Disassembly 11
1.8 Electrical Parts (Antistatic gloves must be worn.)
Note: Remove the front panel& panel frame subassembly (refer to 1.1&1.3 ) before disassembling electrical
parts.
Procedure Illustration
1) Remove 1 screw and remove the cover
of electronic control box. (see CJ_
CONSOLE2_016)
2) Pul... | |
175 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 176 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Contents
1. Outdoor Unit Table ................................................................................................2
2. Outdoor Unit Disassembly ....................................................................................3
2.1 Panel Plate ............................................................. | |
176 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 177 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 2
1. Outdoor Unit Disassembly
1.1 Outdoor Unit Table
Outdoor Unit Model Panel Plate PCB Board
MOX230-12HFN1-MV5W X230 PCB Board 11
MOX330-12HFN1-MW5W X330 PCB Board 11
MOX430-18HFN1-MU0W X430 PCB Board 3
MOX430-17HFN1-MT0W X430 PCB Board 3 | |
177 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 178 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 3
2. Outdoor Unit Disassembly
2.1 Panel Plate
1. X230/X330
Procedure Illustration
1) Turn off the air conditioner and the
power breaker.
2) Remove the screw of the big handle
and then remove the big handle
(1 screws) (see CJ_X230_001).
3) Remove the screws of the top cover
and then re... | |
178 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 179 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 4
Procedure Illustration
4) Remove the screws of water collecting
cover and then remove the water
collecting cover (2 screws) (see CJ_
X230_003).
5) Remove the screws of the front
panel and then remove the front
panel (7 screws(onoff models) or
9 screws(inverter models) (see CJ_
X230_0... | |
179 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 180 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 5
Procedure Illustration
6) Remove the screws of the right panel
and then remove the right panel
(5 screws) (see CJ_X230_005).
CJ_X230_005
Note: This section is for reference only. Actual unit appearance may vary.
Right Panel | |
180 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 181 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 6
2.X430
Procedure Illustration
1) Turn off the air conditioner and the
power breaker.
2) Remove the screw of the big handle
and then remove the big handle
(1 screw) (see CJ_X430_001).
3) Remove the screws of the top cover
and then remove the top cover (3
screws). One of the screws i... | |
181 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 182 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 7
Procedure Illustration
4) Remove the screws of water collecting
cover and then remove the water
collecting cover (2 screws) (see CJ_
X430_003).
5) Remove the screws of the front
panel and then remove the front
panel (7 screws(onoff models) or
9 screws(inverter models) (see CJ_
X430_0... | |
182 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 183 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 8
Procedure Illustration
6) Remove the screws of the right panel
and then remove the right panel
(6 screws) (see CJ_X430_005).
CJ_X430_005
Note: This section is for reference only. Actual unit appearance may vary.
Right Panel | |
183 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 184 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 9
3. D30
Procedure Illustration
1) Turn off the air conditioner and the
power breaker.
2) Remove the screws of the big handle
and then remove the big handle
(2 screws) (see CJ_D30_001).
3) Remove the screws of the top cover
and then remove the top cover (4
screws). Two of the screws ... | |
184 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 185 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 10
Procedure Illustration
4) Remove the screws of the front right
panel and then remove the front right
panel (2 screws) (see CJ_D30_003).
5) Remove the screws of the front panel
and then remove the front panel (9
screws) (see CJ_D30_004).
CJ_D30_003
CJ_D30_004
Note: This section is f... | |
185 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 186 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 11
Procedure Illustration
6) Remove the screws of water collecting
cover and then remove the water
collecting cover (2 screws) (see CJ_
D30_005).
7) Remove the screws of the rear net and
then remove the rear net (2 screws)
(see CJ_D30_006). (for some models)
CJ_D30_005
CJ_D30_006
Note: ... | |
186 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 187 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 12
Procedure Illustration
8) Remove the screws of the right panel
and then remove the right panel
(8 screws) (see CJ_D30_007).
CJ_D30_007
Note: This section is for reference only. Actual unit appearance may vary.
Right Panel | |
187 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 188 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 13
4. E30/590
Procedure Illustration
1) Turn off the air conditioner and the
power breaker.
2) Remove the screws of the big handle
and then remove the big handle
(2 screws) (see CJ_E30_001).
3) Remove the screws of the top cover
and then remove the top cover (4
screws). Two of the sc... | |
188 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 189 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 14
Procedure Illustration
5) Remove the screws of the front right
panel and then remove the front right
panel (2 screws) (see CJ_E30_004).
CJ_E30_004
Note: This section is for reference only. Actual unit appearance may vary. | |
189 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 190 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 15
Procedure Illustration
1) Remove the screws of the front panel
and then remove the front panel (7
screws) (see CJ_E30_005).
2) Remove the screws of the right panel
and then remove the right panel
(10 screws) (see CJ_E30_006).
CJ_E30_005
CJ_E30_006
Note: This section is for referen... | |
190 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 191 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 16
2.2 Electrical parts
WARNING: Antistatic gloves must be worn when you disassemble the electronic box.
Note: Remove the air outlet grille(refer to 3.1 Panel Plate) before disassembling electrical parts.
1. PCB board 1
Procedure Illustration
1) Remove the screws of the top cover.
(2 scre... | |
191 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 192 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 17
2. PCB board 2
Procedure Illustration
1) Unfix the hooks and then open the
electronic control box cover (4 hooks)
(see CJ_ODU_PCB_002-1).
2) Disconnect the connector for fan
motor from the electronic control
board (see CJ_ODU_PCB_002-2).
3) Remove the connector for the
compressor (see... | |
192 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 193 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 18
3. PCB board 3
Procedure Illustration
1) Remove the screws and unfix the
hooks, then open the electronic
control box cover (5 screws and 2
hooks )(see CJ_ODU_PCB_003-1).
Note:Electric control box cover cannot
be removed, so the voltage between P
and N cannot be measured.
2) Remove al... | |
193 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 194 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 19
4. PCB board 4
Procedure Illustration
1) Remove the screws of the top cover.
(1 screws) (see CJ_ODU_PCB_004-
1).
2) Unfix the hooks and then open the
electronic control box cover (5 hooks)
(see CJ_ODU_PCB_004-2).
3) Disconnect the connector for fan
motor from the IPM board (see CJ_
ODU... | |
194 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 195 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 20
Procedure Illustration
5) Pull out the wire connected with the
terminal. (see CJ_ODU_PCB_004-4).
6) Pull out connectors of the condenser
coil temp. sensor(T3),outdoor ambient
temp. sensor(T4) and discharge temp.
sensor(TP) (see CJ_ODU_PCB_004-4).
7) Disconnect the electronic expansio... | |
195 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 196 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 21
5. PCB board 5
Procedure Illustration
1) Unfix the hooks and then open the
electronic control box cover (4 hooks)
(see CJ_ODU_PCB_005-1).
2) Disconnect the connector for
outdoor DC fan from the electronic
control board (see CJ_ODU_
PCB_005-2).
3) Remove the connector for the
compresso... | |
196 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 197 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 22
6. PCB board 6
Procedure Illustration
1) Unfix the hooks and then open the
electronic control box cover (4 hooks)
(see CJ_ODU_PCB_006-1).
2) Remove 8 screws on the electronic
control board and then turn over
the electronic control board (see
CJ_ODU_PCB_006-2).
Note:Electric control bo... | |
197 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 198 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 23
Procedure Illustration
3) Pull out the two blue wires
connected with the four way valve.
(see CJ_ODU_PCB_006-3)(for heat
pump models)
4) Pull out connectors of the condenser
coil temp. sensor(T3),outdoor
ambient temp. sensor(T4) and
discharge temp. sensor(TP). (see
CJ_ODU_PCB_006-... | |
198 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 199 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 24
7. PCB board 7
Procedure Illustration
1) Unfix the hooks and then open the
electronic control box cover (4 hooks)
(see CJ_ODU_PCB_007-1).
2) Remove 4 screws on the electronic
control board and then remove the
electronic control box subassembly.
(see CJ_ODU_PCB_007-2).
Note:Electronic ... | |
199 | SRM_M_UNIHIF_0_XXXX_2207XX.pdf | 200 | tradeloom_data/HVAC Data Sources/SRM_M_UNIHIF_0_XXXX_2207XX.pdf | Outdoor Unit Disassembly 25
Procedure Illustration
3) Pull out the connectors (see CJ_
ODU_PCB_007-3).
4) Remove the 9 screws and unfix
the 3 hooks and then remove the
electronic control board(see CJ_
ODU_PCB_007-3).
5) Remove two screws and then
remove the electronic control box
subassembly on partition board
... |
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