Fisher & Paykel AquaSmart/EcoSmart Top-Load Code 73: wrong water-Level sensor fitted

What 73 means

Code 73 on Fisher & Paykel AquaSmart/EcoSmart top-load washers, such as the WA37T26EW and WA42T26GW, is a pressure transducer error. It means an incorrect pressure transducer has been fitted, so the water-level sensor does not match what the washer expects. The remedy is to replace the Motor Control Module, and the display shows 73. It usually shows up after a repair.

Common causes of 73

Incorrect pressure transducer (water-level sensor) fitted
Motor Control Module not matching the sensor type
Motor Control Module needs replacement

✓ One safe check you can try

1. Turn the washer off and switch off its breaker for one minute. 2. Restore power and see whether 73 shows at start-up. 3. Do not run loads if it does. 4. Call us and tell us if any sensor or control board was replaced recently.

! Why to stop there

Matching sensor and module requires the correct part numbers.
The sensor and board are both inside the cabinet.
We give a written price first and a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Washer codes

KEY LOCFisher & Paykel WH2424 Front-Load Message "KEY LOC": control panel is locked no tAPFisher & Paykel WH2424 Front-Load Message "no tAP": water not reaching the washer out OF bALFisher & Paykel WH2424 Front-Load Message "out OF bAL": load needs rebalancing Sud LOCFisher & Paykel WH2424 Front-Load Message "Sud LOC": too many suds, washer paused 238Fisher & Paykel AquaSmart/EcoSmart and SmartDrive Ph6 Code 238: lid lock open circuit door LocdFisher & Paykel WH2424 Front-Load Message "door Locd": door locked on purpose 239Fisher & Paykel AquaSmart/EcoSmart and SmartDrive Ph6 Code 239: lid lock not responding door OPEnFisher & Paykel WH2424 Front-Load Message "door OPEn": close the door to start

7373 questions

Why does the washer think the sensor is wrong?

The control recognizes the type of sensor by its signal. A different type from the one expected triggers 73. The signal pattern tells the control which sensor is present.

Is a reset enough?

No. A reset cannot change which sensor is installed. The matching part has to be fitted. Only the correct sensor and module together clear it.

Did my own use cause it?

No. This code points to the parts installed, usually after a repair or part swap. It follows a sensor or control being replaced with the wrong version.