Pioneer QUANTUM INVERTER Series Service & Troubleshooting Manual page 114

LED Flash Frequency:
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
1 Standby normally
2 Operate normally
3 Compressor driven chip EEPROM parameter error
4 IPM malfunction or IGBT over-current protection
5 Over voltage or too low voltage protection
6 Inverter compressor drive error
7 Inverter compressor drive error
Communication error between outdoor main chip and
8
compressor driven chip
... ...
Troubleshooting

LED(GREEN) LED(RED)
ON OFF
OFF ON
ON FLASH
FLASH OFF
ON ON
OFF FLASH
FLASH LIGHT
FLASH FLASH
6

Solution
-
-
TS19
TS30
TS31
TS34
TS34
TS19