Troubleshooting Guide

Table Of Contents
LED Flash Frequency:
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2.2 Error Display (For Some Outdoor Units)
There are 2 LED lights (RED color and GREEN color) welded in outdoor main board. After power on, LED show
different actions when encounter different problems.
No. Problem LED(GREEN) LED(RED) Solution
1 Standby normally
ON OFF -
2 Operate normally
OFF ON -
3 Compressor driven chip EEPROM parameter error
ON FLASH
TS19
4 IPM malfunction or IGBT over-current protection
FLASH OFF
TS30
5 Over voltage or too low voltage protection
ON ON
TS31
6 Inverter compressor drive error
OFF FLASH
TS34
7 Inverter compressor drive error
FLASH LIGHT
TS34
8
Communication error between outdoor main chip and
compressor driven chip
FLASH FLASH
TS19
Troubleshooting 6