38MBRC: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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EH 60/EH 61/EH 62/ EH 65/ EC 53/EC 52/EC 54/ (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.
Recommended parts to prepare:
• Connection wires
•Sensors
•PCB
Troubleshooting and repair:
NOTE: For certain models, the outdoor PCB could not be removed separately. In this case, the outdoor electric control box
should be replaced as a whole. The figure and the value above are for reference only. The actual appearance and value
may vary.
Check the connection between
temperature sensor and PCB .
Replace indoor PCB((E4/E5) or
outdoor PCB (F1/F2/F3)
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
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