Troubleshooting 19
7.4 E5/EH 60/E6/EH 61/E7/EC 52 (Open 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:
Check the connection between
temperature sensor and PCB.
Replace indoor PCB((E4/E5) or
outdoor PCB(F2)
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
Note: The picture and the value are only for reference, actual condition and specific value may vary.
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