2-38. E: 99. 4-way valve error (Outdoor unit)
Indicator
Indoor unit
Operation indicator
9 time flash
Timer indicator
9 time flash
Economy indicator
Continuous flash
Error code
E: 99
Detective actuator
Indoor unit
main PCB
When the indoor heat exchanger temperature is
compared with the room temperature, and either
following condition is detected continuously two times,
the compressor stops.
Indoor heat exchanger temp. - Room temp. > 10°C
(Cooling or Dry operation)
Indoor heat exchanger temp. - Room temp. < -10°C
(Heating operation)
If the same operation is repeated 5 times, the
compressor stops permanently.
Heat exchanger temperature
thermistor
Room temperature thermistor
4-way valve
Forecast of cause
Connector connection failure
Thermistor failure
Coil failure
4-way valve failure
Main PCB failure
Controller PCB failure
Check point 1. Check connection of connector
•
Check if connector is removed.
•
Check erroneous connection.
•
Check if thermistor cable is open.
→ Upon correcting the removed connector or mis-wiring, reset the power.
↓
Check point 2. Check thermistor of Indoor unit
•
Isn’t it fallen off the holder?
•
Is there a cable pinched?
Check characteristics of thermistor, refer to
"E: 41. Room temperature sensor error (Indoor unit)"
"E: 42. Indoor unit heat exchanger sensor error (Indoor unit)"
→ If defective, replace the thermistor.
↓
2-38. E: 99. 4-way valve error (Outdoor unit)
- (03-55) -
2. Troubleshooting with error code
TROUBLESHOOTING
TROUBLESHOOTING
Содержание ABHG18KRTA
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Страница 5: ...1 GENERAL INFORMATION 2022 08 08 SR_CH01_MU004EG_06 ...
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Страница 212: ...9 17 Model AOHG36KBTA5 02 150 9 PC board diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...
Страница 213: ...3 TROUBLESHOOTING 2022 08 08 SR_CH03_MU004EG_07 ...
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Страница 316: ...6 2 Outdoor unit 03 100 6 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...
Страница 317: ...4 CONTROL AND FUNCTIONS 2022 04 13 SR_CH04_MU004EG_08 ...
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Страница 403: ...5 FILED WORKING 2022 08 08 SR_CH05_MU004EG_08 ...