Fisher & Paykel Dryers F1 Error: Drum thermistor fault
Fisher & Paykel dryer error code F1 is a mid-severity fault meaning Drum air thermistor fault. Short-term use is possible if the dryer still produces heat and does not overheat, but drying performance will be unreliable. A 5-minute power-cycle will clear the code if the sensor fault was transient.
~60%
DIY Fixable
From $95
Typical Repair Cost
1–2 hrs
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. Short-term use is possible if the dryer still produces heat and does not overheat, but drying performance will be unreliable. Do not leave the dryer running unattended while the fault is active, as thermistor faults can mask developing overheat conditions.
Can I reset the code?
Yes. A 5-minute power-cycle will clear the code if the sensor fault was transient. If F1 returns at the start of the next cycle, the thermistor, wiring, or control board requires physical diagnosis and repair.
When to stop immediately?
Stop if you notice: Dryer drum or cabinet becomes unusually hot to the touch, Burning smell is present during operation.
Symptoms You May Notice
F1 displayed on control panel
The display shows F1 continuously or flashes the code during a cycle, and the dryer may pause or stop drying.
Clothes remain damp
Without an accurate drum air temperature reading, the controller cannot regulate heat output effectively, leaving loads under-dried.
Cycle runs longer than normal
The dryer may default to a timed-dry fallback mode, extending cycle length significantly.
Possible Causes
Failed drum air thermistor
The NTC thermistor monitoring drum inlet air temperature has gone open-circuit or short-circuit, returning a value outside the controller's acceptance range.
DIY PossibleLoose or corroded connector
The wire harness connector between the thermistor and the control board has worked loose or corroded, breaking the signal path.
DIY PossibleDamaged sensor wiring
High drum temperatures over time can cause insulation to crack on the thermistor leads, creating an intermittent open circuit.
DIY PossibleFaulty control board
The PCB input circuit that reads thermistor resistance has failed, triggering the code even with a working sensor.
Requires ProfessionalSafe Checks You Can Do
-
1
Power-cycle the dryer
Switch the dryer off at the wall and leave it unplugged for 5 minutes, then restore power and start a short cycle to see whether F1 clears.
Transient sensor drop-outs from vibration or humidity often clear after a full power-cycle.
-
2
Check the lint filter and exhaust vent
Remove and clean the lint filter thoroughly, then inspect the exhaust duct for blockages. Restricted airflow causes drum temperatures to spike, which can stress the thermistor.
A blocked vent is the most common root cause of thermistor failures in Fisher & Paykel dryers.
-
3
Inspect the thermistor connector
After unplugging, open the back panel and locate the drum air thermistor on the heater housing or exhaust duct. Firmly reseat the connector and check for corrosion.
Press connectors until you hear a click. Clean corroded pins with electrical contact cleaner.
Tools required -
4
Test thermistor resistance
With the dryer unplugged, disconnect the thermistor and measure resistance with a multimeter. Fisher & Paykel drum thermistors typically read 10–50 kΩ at room temperature depending on type. An open circuit (OL) confirms failure.
Compare the reading to the service manual value for your model series. DE/DH series values differ slightly.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Thermistor tests faulty and replacement requires dismantling the heater box assembly
- Code persists after installing a confirmed good replacement thermistor
- Multiple temperature-related fault codes appear simultaneously
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Dryers Repair Service Schedule Appointment