544300 Genuine Oven Temperature Sensor for Fisher & Paykel Ovens, Cavity Temperature Probe Replacement Part

Fisher & Paykel's 544300 is a genuine oven temperature sensor, the probe that reports the cavity temperature to the oven's electronic control. Fisher & Paykel has used several different sensors across its ovens, so it pays to be sure before you buy. Match 544300 with the number on your old sensor if you can, or check the model number and product code on the oven's rating label first.

Signs of a faulty oven temperature sensor

Electronic ovens don't rely on a mechanical thermostat to hold temperature. Instead, a sensor inside the cavity changes its electrical resistance as it heats up, and the control board reads that value to switch the elements on and off. When the sensor drifts or fails, the oven may overshoot and burn food, run well below the set temperature, take far too long to preheat, or stop heating and show an error code. A sensor with damaged wiring can also cause faults that come and go as the oven warms up.

Part details

• Genuine Fisher & Paykel part 544300
• Oven temperature sensor (cavity probe)
• For Fisher & Paykel electronic ovens
• Reports cavity temperature to the oven control

Testing and replacing the sensor

Turn the oven off at the isolating switch or circuit breaker and let it cool completely. The sensor is usually held to the back wall of the cavity by screws, with its plug behind the rear panel. Fit the new sensor with its seal or grommet in place and run the oven to check it reaches temperature. Built-in ovens are hard-wired, so if you're not confident, have a licensed electrician or appliance technician do the job.

Questions about this part

How can I tell if the sensor is faulty?

A technician will check the sensor's resistance at room temperature and compare it to Fisher & Paykel's service figures. A reading that's open, shorted or well off the expected value means the sensor needs replacing. Error codes on the display can also point to it.