1
2
2
Check code
[H08] / [d4]
(Current code / AI-NET)
Check code name
Oil level detective
temperature sensor error
Cause of operation
TK1 to TK4 sensor Open/Short
Sub-code:
01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error
The detected error is an oil level detective temperature sensor error.
Check disconnection of the wiring and resistance value of the sensor.
If the sensors are normal, replace the outdoor I/F P.C. board.
Circuit
TK1
TK2
TK3
TK4
Connector
CN514 (Black)
CN515 (Green)
CN516 (Red)
CN523 (Yellow)
Check code
[H16] / [d7]
(Current code / AI-NET)
Check code name
TK1 temperature
detective circuit error
(Sub-code: 01)
Cause of operation
1. Coming-off of TK1 sensor, miscabling,
characteristics error of resistance value
2. Oil-equalization circuit error
(Check valve, capillary clogging, strainer clogging)
3. Refrigerant stagnation in case of compressor shell
Is not TK1 sensor detached?
Is there no miscabling or misinstallation
on TK1/TK2/TK3/TK4 sensors?
Start a test operation in COOL or HEAT mode.
TK1 sensor temp is displayed on 7-segment display with SW01/02/03=[1] [11] [2].
Check TK1 sensor temp approx. 10 minutes after compressor 1 has operated.
If low temperature continues (approximately outside temp) or temperature
does not almost change, a clogging of strainer of oil-equalization circuit,
clogging of capillary tube, or malfunction of check valve is considered.
(Note 1)
Refer to item [H07] error.
* Outdoor unit temp sensor characteristics-4
* Characteristics-4
Correct miscabling/misinstallation.
TK1: CN514
TK2: CN515
TK3: CN516
TK4: CN523
( )
YES
YES
YES
NO
NO
NO
Check I/F P.C. board
Correct installation of sensor.
Are characteristics of TK1 sensor
resistance value normal?
Check the clogging of SV3E valve.
(Note 1)
No error
Error
Error
No error
Sensor error
Replace clogged part.
Replace SV3E valve.
Strainer
Compressor 1
Oil tank
Capillary tube
TK1
FILE NO. SVM-1
40
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