What this code means

When the output of the thermal sensor on the base plate is higher than 4.95 V or lower than 0.1 V, the sensor is assumed failed and this alarm occurs.

Applies to: ZAPI AC-0 SSL Sensored inverter (traction & pump configuration).

Possible causes / checks (from the source)

It is necessary to replace the controller.

Need the part?

If diagnosis points to a failed sensor, solenoid, controller or harness part, send us the code (MDI-PRC 73), machine model and serial number — we quote genuine and OEM replacement parts for export.