2-15. E: 73. Heat exchanger (Middle/Outlet) temperature
thermistor error (Outdoor unit)
Indicator
Indoor unit
Operation indicator
7 time flash
Timer indicator
3 time flash
Economy indicator
Continuous flash
Error code
E: 73
outdoor unit
"Error code table (Outdoor unit)"
Detective actuator
Heat exchanger liquid temperature
thermistor
•
Heat exchanger liquid temperature thermistor short
or open detected
•
Heat exchanger middle temperature thermistor
short or open detected
Heat exchanger middle
temperature thermistor
Forecast of cause
Connector failure
Thermistor failure
Main PCB failure
Check Point 1 : Check the connector connection and cable open
•
Connector connection state check
•
Cable open check
↓
Check Point 2 : Check the thermistor
•
For the outdoor unit heat exchanger thermistor resistance value, refer to
•
If thermistor is either open or shorted, replace it and reset the power.
↓
Check point 3. Check voltage of main PCB
Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor
(DC 5.0 V).
NOTE:
For details of thermistor connector, refer to
TECHNICAL DATA AND PARTS LIST on page 02-14.
If the voltage does not appear, replace main PCB.
↓
End
2-15. E: 73. Heat exchanger (Middle/Outlet) temperature thermistor error (Outdoor
unit)
- (03-20) -
2. Troubleshooting with error code
TROUBLESHOOTING
TROUBLESHOOTING
Содержание General AOHH30KMTB
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Страница 5: ...1 GENERAL INFORMATION 2022 07 19 SR_CH01_AS073EG_02 ...
Страница 13: ...2 TECHNICAL DATA AND PARTS LIST 2022 07 19 SR_CH02_AS073EG_01 ...
Страница 33: ...3 TROUBLESHOOTING 2022 08 22 SR_CH03_AS073EG_01 ...
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Страница 90: ...5 2 Outdoor unit 03 54 5 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...
Страница 91: ...4 CONTROL AND FUNCTIONS 2022 08 22 SR_CH04_AS073EG_01 ...
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Страница 129: ...5 FILED WORKING 2022 08 22 SR_CH05_AS073EG_01 ...