McQuay E Series - Indicator Lights; Fault Diagnosis using LEDs

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English
INDICATOR LIGHTS
Fault Diagnosis
LED INDICATION
DescriptionGreen Red
A1234
NORMAL
INSTALLATION ERROR
ANTIFREEZE (OTHER ROOMS)
HEAT SINK OVERHEAT
IPM ERROR/IGBT ERROR
INSUFFICIENT GAS
AC INPUT OVER CURRENT
COMPRESSOR START-UP ERROR
COMMUNICATION ERROR (OUTDOOR CONTROL PCB AND IPM PCB)
4 WAY VALVE ERROR
DC VOLTAGE OUT OF RANGE
COMPRESSOR MOTOR LOCK/COMPRESSOR OVERLOADED
DISCHARGE PIPE OVERHEAT
ANTIFREEZE (COOLING)/HEAT EXCHANGER OVERHEAT (HEATING)
HEAT EXCHANGER OVERHEAT
COMPRESSOR SENSOR SYSTEM ERROR
COMPRESSOR FEEDBACK DETECTION ERROR
AC CURRENT SENSOR ERROR
OUTDOOR AIR THERMISTOR SHORT/OPEN
COMPRESSOR DISCHARGE PIPE THERMISTOR SHORT/OPEN/MISPLACED
OUTDOOR HEAT EXCHANGER THERMISTOR SHORT/OPEN
LIQUID PIPE THERMISTOR SHORT/OPEN
GAS PIPE THERMISTOR SHORT/OPEN
HEAT SINK THERMISTOR SHORT/OPEN
OUTDOOR CONTROL BOX OVERHEAT
OUTDOOR PCB ERROR
OUTDOOR DC FAN MOTOR LOCK
The outdoor unit LED indicates the running condition of the system:
If faulty condition occurs, please contact the nearest local dealer or qualifi ed service personnel. Do not attempt to
troubleshoot the unit yourself. For any enquiries on spare parts please contact your authorized dealer.
Legend
Blinks
Off
On
5SLY28CR
1 EN 5CKYER-1009(1).indd 211 EN 5CKYER-1009(1).indd 21 4/21/11 9:11:23 AM4/21/11 9:11:23 AM