Samsung MH026FNCA Service Manual page 19

3-1-2 Outdoor Unit
Display EXPLANATION(The error indicated on the PCB display of outdoor unit)
Communication error(indoor unable to receive data)
Outdoor unit communication error
(Abnormal data from indoor unit over 60 packet)
Indoor unit room temperature sensor error (Open/Short)
Indoor unit heat exchanger in temperature sensor error (Open/Short)
Indoor unit heat exchanger out temperature sensor error (Open/Short)
Indoor unit sensor error-Evaporator pipe in sensor - Self diagnosis
Indoor unit sensor error-Evaporator pipe out sensor - Self diagnosis
Indoor Unit FAN Error
More than two indoor units cool and heat simultaneously
Indoor Unit EEPROM Error
Indoor Unit EEPROM Option Error
Failure of pipe check operation
No pipe check operation check
- occasion : try to operation after the installation through auto addressing
mode without pipe check operation.
The number of Indoor unit mismatched
Communication error between the outdoor and indoor unit
Outdoor communication error between main PCB and sub PCB
Outside temperature sensor error(Short/Open)
- Error level: over 4.9V(-50˚C) under 0.4V(93˚C)
Condenser temperature sensor error(Short/Open)
- Error level: over 4.9V(-50˚C) under 0.4V(93˚C)
Outdoor unit sensor error - Condenser out sensor(Short/Open) - Self diagnosis
Compressor Discharge temperature sensor error
Compressor discharge sensor detached - Self diagnosis
Compressor OLP sensor error (Short/Open)
- Error condition : outdoor temperature under -20˚C
- Error level : over 4.95V(-30˚C) under 0.5V(151˚C)
Samsung Electronics
Alignment and Adjustments
REMARK
Check electrical connection
and setting
Check electrical connection
and setting
Check electrical connection
and setting
Check setting
Check electrical connection
and setting
Check electrical connection
and setting
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