MrCool DIY E Star Series Installation & Owner's Manual page 43

For other errors:
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is
not a temperature reading.
Troubleshooting:
Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires
replacement. If the unit responds, the display board requires replacement.
LED flash frequency:
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.
No. Problem
1 Standby normally
2 Operate normally
3 Compressor driven chip EEPROM parameter error
4 IPM malfunction or IGBT over-strong current protection Flash
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
The error codes and descriptions are for reference only. If your system displays any of
these codes contact a qualified technician to investigate the matter further.
... ...
LED(GREEN)
ON
OFF
ON
ON
OFF
Flash
flash
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Solution
LED(RED)
(section)
OFF -
ON -
FLASH
10.2
OFF 10.9
ON 10.10
FLASH 10.11
LIGHT
10.11
FLASH
10.2
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