F1
Fisher & Paykel · Fisher & Paykel RF170WDRJX5 17.1 cu ft ActiveSmart Bottom Mount Counter Depth Refrigerator with Ice and Water
The defrost sensor (thermistor) on the evaporator has an open or short circuit — the sensor is used to determine when to end the defrost cycle; a faulty sensor can cause excessive frost buildup on the evaporator or the defrost cycle to run too long; the sensor is located on the evaporator coil behind the rear panel of the freezer compartment
Error F1 on the Fisher & Paykel Fisher & Paykel RF170WDRJX5 17.1 cu ft ActiveSmart Bottom Mount Counter Depth Refrigerator with Ice and Water means: Defrost Sensor Fault. The top-ranked community fix is “Test and Replace Defrost Sensor Thermistor” (medium difficulty, ~45 min, DIY cost: $15-$25). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · refrigerator
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many refrigerator repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $110-$160.
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The Fisher & Paykel Fisher & Paykel RF170WDRJX5 17.1 cu ft ActiveSmart Bottom Mount Counter Depth Refrigerator with Ice and Water has 8 other known error codes:
Error code F1 also appears on 3 other Fisher & Paykel models:
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