Medium - Inspection Needed

Fisher & Paykel Washer Fault 10 (Thermistor Open Circuit)

Fault 10 means the water temperature sensor may be open circuit. F&P gives the reference values plainly - 10,000 ohms at 77°F (25°C), or 12,500 ohms at 68°F (20°C) - so the sensor can be measured against a known figure…

What 10 Means

Fault 10 means the water temperature sensor may be open circuit. F&P gives the reference values plainly - 10,000 ohms at 77°F (25°C), or 12,500 ohms at 68°F (20°C) - so the sensor can be measured against a known figure rather than guessed at. The same code and meaning run across SmartDrive phases 1 to 6, where the manual adds that it applies to the Intuitive and GW models.

Common Causes of 10

  • A thermistor that has gone open circuit
  • A loose or corroded connection in the thermistor circuit
  • A break in the lead between the sensor and the module

🔧 One Safe Check You Can Try

Not an owner test, but one sign is worth reporting: washes that have started arriving at the wrong temperature, particularly warm cycles running cold, are what a machine with no usable temperature reading produces.

⚠ Why You Shouldn't Go Further Than That

  • Unplug the washer before the sensor circuit is reached, because the thermistor harness runs alongside the mains feed into the module.
  • A resistance reading only means something measured at a known temperature and compared against the right reference, so a number read out of context condemns a working sensor.
  • F&P puts the connection ahead of the sensor in its sequence, and reversing that is how people pay for a part that was never failing.
  • On SmartDrive machines the reference figure differs from the ambient assumption most meters are used at, so the check needs doing properly rather than roughly.

Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.

Other Washer Error Codes

Still Seeing 10?

Book a trained technician and get it diagnosed correctly the first time — no guesswork, no repeat visits.

FAQ

10 FAQ

Same sensor, opposite failure. Fault 10 is an open circuit - no path at all - while Fault 41 is a short, which the module reads as an impossibly high temperature.

Often it will still run, but it cannot control temperature, so the program you select and the wash you get stop matching.

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