MrCool DIY E Star Series Installation & Owner's Manual page 49

10.5 Error Code(s): EH 60/EH 61/EC 52/EC 53/EC 54/EC 56 (Open circuit or short circuit of temperature
sensor diagnosis and solution).
Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code.
Recommended parts to prepare:
• Connection wires
• Sensors
• PCB
Troubleshooting and repair:
Note: For certain models, the outdoor PCB cannot be removed separately. In this case, the outdoor
electric control box should be replaced as a whole. The illustration and value above are for reference
only, actual appearance and value may vary.
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.
Check the connection between
temperature sensor and PCB.
Is it properly wired?
YES
Measure the resistance
value of the sensor
Is it within acceptable
parameters?
YES
Replace indoor PCB (EH 60/EH 61) or
outdoor PCB (EC 53/EC 52/EC 54/EC 56).
****Disclaimer****
mrcool.com
NO Ensure proper connections.
NO Replace the sensor.
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