Toshiba SUPER MMK-AP0073H (IN) Service Manual page 66

Check code
Main
Outdoor 7-segment display
remote
controller Check code Sub-code remote controller
H08 01: TK1 sensor error
H08
02: TK2 sensor error
03: TK3 sensor error
04: TK4 sensor error
H14 H14 —
H16 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
Detected
AI-NET Check code name
position
central control
d4 I/F Oil level detective
temp sensor error
44 I/F Compressor 2 case
thermo operation
d7 I/F Oil level detective
circuit system error
MG-SW error
OCR operation
MG-SW : Magnet Switch
OCR : Over-current Relay
Status Error detection condition
All stop • Resistance value of sensor is • Check connection of TK1 sensor connector.
infinite or zero. (Open/Short)
• Check characteristics of TK1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
All stop • Resistance value of sensor is • Check connection of TK2 sensor connector.
infinite or zero. (Open/Short)
• Check characteristics of TK2 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
All stop • Resistance value of sensor is • Check connection of TK3 sensor connector.
infinite or zero. (Open/Short)
• Check characteristics of TK3 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
All stop • Resistance value of sensor is • Check connection of TK4 sensor connector.
infinite or zero. (Open/Short)
• Check characteristics of TK4 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
All stop Compressor 2 case thermostat • Check compressor 2 case thermo circuit. (Connector, wire, P .C. board)
operated.
• 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.
All stop Temperature change of TK1 could • Check TK1 sensor coming-off.
not be detected though compres-
• Check characteristics of TK1 sensor resistance value.
sor 1 started the operation.
• 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.
Temperature change of TK2 could • Check TK2 sensor coming-off.
not be detected though compres-
• Check characteristics of TK2 sensor resistance value.
sor 2 started the operation.
• 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.
Temperature change of TK3 could • Check TK3 sensor coming-off.
not be detected though compres-
• Check characteristics of TK3 sensor resistance value.
sor started the operation.
• 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.
Temperature change of TK4 could
not be detected though compres-
• Check characteristics of TK4 sensor resistance value.
sor started the operation, or the
• Check TK1, TK2, TK3, and TK4 misconnection.
difference from other TK sensor
• Check SV3E valve operation.
changed for a constant time only
• Check capillary clogging of oil-equalization circuit and check valve operation.
within the specified range.
• Check refrigerant stagnation in compressor shell.
• Check MG-SW or OCR.
Check item (position)