Step-by-Step DIY Fix Guide
- SAFETY: Unplug the refrigerator.
- Perform a hard reset: unplug for 5 minutes, reconnect.
- If F20 persists, contact Fisher & Paykel service — flapper heater replacement requires access to the internal air duct.
If the warning comes back after restart
- If airflow still seems weak after the basic checks, the fan path or a deeper obstruction becomes more likely.
- If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
- F20 persists after a 5-minute power reset
What This Error Means
The F20 fault code on your Fisher & Paykel Refrigerator means: The flapper heater — a small heater that prevents the air damper (flapper) between compartments from freezing shut — has been detected as defective. A frozen flapper prevents temperature regulation between compartments.
Most common cause: flapper heater element failure.
Contact Fisher & Paykel service if F20 persists after a reset.
Most Likely Cause by Symptom
The Fisher & Paykel refrigerator may stop, pause, or refuse to complete the cycle normally.
Likely cause: Flapper heater element failure
Check first: SAFETY: Unplug the refrigerator.
Common Causes
- Flapper heater element failure
- Wiring fault to the heater
- Thermostat controlling the flapper heater failed
What Not to Do
- Do not attempt to manually heat or manipulate the air damper flapper
Model and Display Variation Notes
Model-family notes
- Fisher & Paykel refrigerator display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Service option
Fisher & Paykel service visit if the warning returns after the basic checks are complete.
Manual and model check
Check your exact model and manual before ordering any Fisher & Paykel refrigerator parts.
Common parts
- Flapper heater assembly (~$20–$60) (varies) - consult technician
This section stays service-first because the page points more strongly toward support or professional repair than a routine parts purchase.
When Not to Keep Troubleshooting
F20 persists after a 5-minute power reset
How to Prevent It Recurring
- Maintain consistent refrigerator temperatures — large temperature swings increase the work the flapper heater must do
Related Error Codes
Extra notes
- This page is based on Fisher & Paykel support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-10
Based on: Based on Fisher & Paykel support material and edited into consumer-safe guidance for the exact code family on this page.
View Fisher & Paykel North America Support
Model coverage note: Fisher & Paykel refrigerator code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.