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:
Check the connection between
temperature sensor and PCB.
Replace indoor PCB (EH 60/EH 61) or
outdoor PCB (EC 53/EC 52/EC 54/EC 56).
Is it within acceptable
parameters?
Is it properly wired? Ensure proper connections.NO
Measure the resistance
value of the sensor
YES
Replace the sensor. NO
YES
mrcool.com Page 48
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).
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.
****Disclaimer****
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.
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