Outdoor Unit - Samsung AJ009JNNDCH/AA Service Manual

4-1-2

Outdoor unit

AJ020JCJ2CH/AJ024JCJ3CH/AJ036JCJ5CH
The table below give indication about self diagnostic routine. Some of error code requires activities
exclusively for Authorise Service Center.
The error indicated on the PCB display of outdoor unit
DISPLAY
Communiaction 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
EVA-MID BREAK AWAY
EVA-IN BREAK AWAY
EVA-OUT BREAK AWAY
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. Check setting
The number of Indoor unit mismatched
Communication error between the outdoor and indoor unit
Outdoor communication error between main micom and inverter micom
Outdoor communication error beween main micom and hub micom
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)
EvaIn1 Sensor Short/Open
EvaIn2 Sensor Short/Open
EvaIn3 Sensor Short/Open
EvaIn4 Sensor Short/Open
EvaIn5 Sensor Short/Open
EvaOut1 Sensor Short/Open
Samsung Electronics
EXPLANATION (The error indicated on the PCB display of outdoor unit)
REMARK
Check electrical connection and setting
Check electrical connection and setting
Check piping connection and setting
Check electrical connection and setting
Check electrical connection and setting
4-5