MrCool DIY E Star Series Troubleshooting Guide

Troubleshooting 4
2. General Troubleshooting
2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer
lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the following
table:
Operation
Lamp
Timer
Lamp
LED
Display
Error Information Solution
1 time OFF
EH 00
Indoor unit EEPROM parameter error TS18
2 times OFF
EL 01
Indoor / outdoor unit communication error TS19
3 times OFF
EH 02
Zero-crossing signal detection error (for some models) TS21
4 times OFF
EH 03
The indoor fan speed is operating outside of the normal range TS22
5 times OFF
EC 51
Outdoor unit EEPROM parameter error (for some models) TS18
5 times OFF
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short
circuited
TS25
5 times OFF
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short
circuited
TS25
5 times OFF
EC 54
Compressor discharge temperature sensor TP is in open circuit or
has short circuited
TS25
5 times OFF
EC 56
Evaporator coil outlet temperature sensor T2B is in open circuit or
has short circuited (for free-match indoor units)
TS25
6 times OFF
EH 60
Indoor room temperature sensor T1 is in open circuit or has short
circuited
TS25
6 times OFF
EH 61
Evaporator coil temperature sensor T2 is in open circuit or has short
circuited
TS25
12 times OFF
EC 07
The outdoor fan speed is operating outside of the normal range
for some models)
TS22
9 times OFF
EH 0b
Indoor PCB / Display board communication error TS26
8 times OFF
EL 0C
Refrigerant leak detected TS27
7 times FLASH
PC 00
IPM malfunction or IGBT over-strong current protection TS29
2 times
FLASH PC 01
Over voltage or over low voltage protection TS30
3 times FLASH
PC 02
High temperature protection of IPM module or High pressure
protection (for some models)
TS31
5 times FLASH
PC 04
Inverter compressor drive error TS33
1 time FLASH
PC 08
Current overload protection (for some models) TS28
7 times FLASH
PC 03
Low pressure protection (for some models) TS34
1 times ON
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Indoor units mode conflict (match with multi outdoor unit)
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MrCool DIY E Star Series Specifications

General

Brand	MrCool
Model	DIY E Star Series
Category	Air Conditioner
Language	English