8
6
Check code
Main
remote
controller
H08
H14
H16
Outdoor 7-segment display
Check code
Sub-code
H08
01: TK1 sensor error
02: TK2 sensor error
03: TK3 sensor error
04: TK4 sensor error
H14
—
H16
01: TK1 oil circuit
system error
02: TK2 oil circuit
system error
03: TK3 oil circuit
system error
04: TK4 oil circuit
system error
AI-NET
central control
remote controller
d4
44
d7
Detected
position
I/F
I/F
I/F
Check code name
Oil level detective
temp sensor error
Compressor 2 case
thermo operation
Oil level detective
circuit system error
MG-SW error
OCR operation
Status
All stop
All stop
All stop
All stop
All stop
All stop
Error detection condition
• Resistance value of sensor is
infinite or zero. (Open/Short)
• Resistance value of sensor is
infinite or zero. (Open/Short)
• Resistance value of sensor is
infinite or zero. (Open/Short)
• Resistance value of sensor is
infinite or zero. (Open/Short)
Compressor 2 case thermostat
operated.
Temperature change of TK1 could
not be detected though compres-
sor 1 started the operation.
Temperature change of TK2 could
not be detected though compres-
sor 2 started the operation.
Temperature change of TK3 could
not be detected though compres-
sor started the operation.
Temperature change of TK4 could
not be detected though compres-
sor started the operation, or the
difference from other TK sensor
changed for a constant time only
within the specified range.
Check item (position)
• Check connection of TK1 sensor connector.
• Check characteristics of TK1 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection of TK2 sensor connector.
• Check characteristics of TK2 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection of TK3 sensor connector.
• Check characteristics of TK3 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check connection of TK4 sensor connector.
• Check characteristics of TK4 sensor resistance value.
• Check outdoor P.C. board (I/F) error.
• Check compressor 2 case thermo circuit. (Connector, wire, P.C. board)
• Check full opening of service valve. (Gas and liquid side)
• Check outdoor PMV clogging. (PMV1, 2)
• Check SV42 valve leak.
• Check miswiring/misinstallation of SV41 and SV42.
• Check valve opening of indoor PMV.
• Check 4-way valve error.
• Check refrigerant shortage.
• Check compressor error.
• Check TK1 sensor coming-off.
• Check characteristics of TK1 sensor resistance value.
• Check TK1, TK2, TK3, and TK4 misconnection.
• Check operation error of SV3E valve.
• Check capillary clogging of oil-equation circuit and operation error of stop valve.
• Check refrigerant stagnation in compressor.
• Check MG-SW or OCR.
• Check TK2 sensor coming-off.
• Check characteristics of TK2 sensor resistance value.
• Check TK1, TK2, TK3, and TK4 misconnection.
• Check SV3E valve operation.
• Check capillary clogging of oil equalization circuit and check stop valve operation.
• Check refrigerant stagnation in compressor shell.
• Check MG-SW or OCR.
• Check TK3 sensor coming-off.
• Check characteristics of TK3 sensor resistance value.
• Check TK1, TK2, TK3, and TK4 misconnection.
• Check SV3E valve operation.
• Check capillary clogging of oil-equalization circuit and check valve operation.
• Check refrigerant stagnation in compressor shell.
• Check MG-SW or OCR.
• Check TK4 sensor coming-off.
• Check characteristics of TK4 sensor resistance value.
• Check TK1, TK2, TK3, and TK4 misconnection.
• Check SV3E valve operation.
• Check capillary clogging of oil-equalization circuit and check valve operation.
• Check refrigerant stagnation in compressor shell.
• Check MG-SW or OCR.
MG-SW : Magnet Switch
OCR
: Over-current Relay
FILE NO. SVM-
16046