– 170 –
No
No
Yes
No
Yes
No error
No error
Error
Error
[H16]
Check code CauseCheck code name
Oil level detection circuit error
TK3 temperature detective circuit
error (Sub-code: 03)
1. Coming-off of TK3 sensor, miswiring,
characteristics error of resistance value
2. Oil-equalization circuit error (Check valve,
capillary clogging, strainer clogging)
3. Refrigerant stagnation in the compressor shell
Is not TK3 sensor
detached?
Is there
no miswiring or
misinstallation on
TD1/TD2/TD3/TK1/TK2/
TK3/TK4/TK5
sensors?
Are
characteristics of
TK3 sensor resistance
value normal?
Check the clogging
of SV3E valve.
(Note 1)
Correct installation of sensor.
Sensor error → replace
Replace clogging part.
Replace SV3E valve.
Check I/F P.C. board
Correct miswiring/misinstallation.
TD1: CN502, white, TD2: CN503, pink
TD3: CN504, blue
TK1: CN531, black, TK2: CN532, green
TK3: CN533, pink, TK4: CN534, yellow
TK5: CN535, red
After resetting
the power
Start a test operation in COOL or HEAT mode.
Display TK3 sensor temperature on 7-segment display with
SW01/02/03=[1] [14] [2].
Check TK3 sensor temp approx. 10 minutes after compressor 3 has operated.
If low temperature continues (approximately outside temp) or temperature has
little change, a clogging of strainer of oil-equalization circuit, clogging of
capillary tube, or malfunction of check valve is considered.
(Note 1) Refer to the article of the check code [H07].
*See "Outdoor unit temperature sensor
characteristics" on "9-9. Sensor Characteristics".
↓
↓
(TK3)
Capillary
tube
Strainer
Comp. 3
(inverter)
Check
valve
Ye s
Ye s
Ye s
No
Check the clogging of SV3E valve.
No
No
No error
No error
Error
[H16]
Error
Check code CauseCheck code name
TK4 temperature detective circuit
error
(Sub-code: 04)
1. Coming-off of TK4 sensor, miswiring,
characteristics error of resistance value
2. Malfunction of SV3E valve circuit (Check valve,
capillary clogging, strainer clogging)
3. Refrigerant stagnation in the compressor shell
Is not TK4 sensor
detached?
Is there
no miswiring or
misinstallation on
TD1/TD2/TD3/TK1/TK2/
TK3/TK4/TK5
sensors?
Are
characteristics of
TK4 sensor resistance
value normal?
Check the clogging
of SV3E valve.
(Note 1)
Correct installation of sensor.r.
Sensor error → replace
Replace clogging part (capillary).
Replace SV3E valve.
Check I/F P.C. board
Correct miswiring/misinstallation.
TD1: CN502, white, TD2: CN503, pink
TD3: CN504, blue
TK1: CN531, black, TK2: CN532, green
TK3: CN533, pink, TK4: CN534, yellow
TK5: CN535, red
Start a test operation in COOL or HEAT mode.
Display TK4 sensor temperature on 7-segment display with
SW01/02/03=[1] [15] [2].
Check TK4 sensor temp approx. 10 minutes after compressor has operated.
If low temperature continues (approximately outside temp) or temperature has
little change, clogging of the parallel capillary tube is considered.
(Note 1) Refer to the article of the check code [H07].
After resetting
the power
*See "Outdoor unit temperature sensor
characteristics" on "9-9. Sensor Characteristics".
↓
↓
(SV3C)
SV
(TK4)
Capillary
tube
Strainer
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