Fisher & Paykel Washer Error Code 110

Error code 110 on a Fisher & Paykel washer indicates that the motor bridge thermistor has developed an open circuit condition. The motor bridge thermistor is a temperature-sensing component built into or closely associated with the Motor Control Module (MCM). Its job is to continuously monitor the thermal state of the inverter bridge, which is the power electronics section that drives the wash motor. When the MCM detects an open circuit on this thermistor signal, it loses the ability to protect the motor bridge from overheating, and the machine halts operation to prevent potential damage.

An open circuit on a thermistor typically means the sensing element or its associated wiring has completely failed rather than simply drifted out of range. This is distinct from a short circuit or out-of-range resistance reading. Because the thermistor is integrated into the Motor Control Module's circuitry in this design, Fisher & Paykel's diagnostic procedure points directly to replacing the MCM as the corrective action rather than attempting to isolate or repair the thermistor independently.

The Motor Control Module governs motor speed, direction, and protection functions throughout the wash cycle. Without accurate bridge temperature feedback, the MCM cannot implement thermal cutback or shutdown protections, making continued operation unsafe for the electronics. Since the thermistor and its signal path are contained within the MCM assembly, component-level repair is generally not practical, and full module replacement is the standard resolution for this fault.