Installation Guide

mrcool.com Page 51
Troubleshooting by Error Code
Disclaimer: The error codes and descriptions are for reference only. If your system displays
any of these codes contact the MRCOOL technical department for more information or a
qualified service technician to investigate the issue further.
Parts that
could be
causing the issue
Error Code
EH 00 EL 01 EH 03 EH 60 EH 61
(O)EC
50
EH 02 PC 02 EC 53 EC 52
EC 54
Indoor PCB
x x x x x
Outdoor PCB x x x x x
Indoor fan motor x x x x x x x x x x
T1 sensor x x x x x x x x x x
T2 Sensor x x x x x x x x x x
T3 Sensor x x x x x x x x x
T4 Sensor x x x x x x x x x
TP Sensor x x x x x x x x x
Reactor x x x x x x x x x x
IPM module board x
x x x x x x x x x
Over load protector x x x x x x x x x x
Parts that
could be
causing the issue
Error Code
PC 40 EC 72 PC 43 PC 45 (O) PC 06 (O) PC 0A (O) PC 30
PC 03/
(O) PC 31
Outdoor PCB
x
Outdoor fan motor x x x x
T3 Sensor x x x x x x x
T4 Sensor x x x x x x x x
TP Sensor x x x x x x x
T2B Sensor x x x x x x x x
Reactor or inductance x x x x x x x x
Compressor x x x x x x x
IPM module board x x x x x x x
Bridge rectifier x x x x x x x x
PFC module x x x x x x x x
Additional refrigerant x x x x x
Electric control box x x x x x x x
High pressure switch x x x x x x x
Low pressure switch x x x x x x x
The codes and parts listed below represent what parts could be associated with the error code.
(O) represents the error code being displayed on the outdoor unit.