Carrier DHMVHAQ24XA3 - Open Circuit or Short Circuit of Temperature Sensor (EC52;53;54;56;EH60;61)

:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
22
DIAGNOSIS AND SOLUTION (CONT.)
Open Circuit or Short Circuit of Temperature Sensor (EC52/53/54/56/EH60/61)
Troubleshooting
Fig. 22 —Check the connection
Error Code EC52/53/54/56/EH60/61
Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.
Supposed causes
Wiring mistake
Sensor faulty
PCB faulty
Check the connection
between the temperature
sensor and PCB.
Correct the connection.No
Yes
Replace the indoor or outdoor
main PCB.
Measure the sensor’s
resistance value.
Replace the sensor.No
Yes