Acson A5LC - Inverter-Y Model Diagnosis; Wall Mounted K-Series Inverter-Y Model

ASCON Service Guide Book
74
Multi Split Inverter – Y Outdoor Unit
Model Board Handset
A5MSY 25/30 BR G18
Error code diagnosis by Outdoor 7-segment Display
The outdoor unit LED indicates the running condition of the system:
LED INDICATION
Green Red
A 1 2 3 4
Description
◑ ● ● ● ●
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
◑
Blinks
●
Off
○
On