:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
30
DIAGNOSIS AND SOLUTION (CONT)
Open circuit or short circuit of the temperature sensor (EH60)
Description:
If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.
Recommended parts to prepare:
• Wiring mistake
• Fan sensor
• Faulty PCB
Troubleshooting and Repair:
Fig. 22 — Multimeter
Check the connection between
the temperature sensor and PCB .
Replace the indoor or outdoor PCB.
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
