Step-by-Step DIY Fix Guide
- SAFETY: No need to disconnect power for initial checks — but unplug for 5 minutes before restoring power for a full reset.
- Power cycle the refrigerator: unplug for 5 minutes, then restore power.
- Check refrigerator and freezer temperatures with a calibrated thermometer after the power cycle — if temperatures are normal (35–38°F fridge, 0°F freezer) and the code clears, monitor for recurrence.
- If temperatures are rising or the code returns, move food to alternative cooling and contact Haier service immediately.
If the warning comes back after restart
- If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
- F1 returns after a 5-minute power cycle
- Internal temperatures are above safe food storage levels (above 40°F in the fridge or above 10°F in the freezer)
What This Error Means
Error F1 on your Haier refrigerator means: The refrigerator has detected a fault with one or more temperature sensors. Variants F2 through F5 indicate sensor faults in different locations or compartments. The machine cannot accurately monitor internal temperatures and has flagged this for service attention. Also displayed as F2, F3, F4, F5 on some Haier models. The refrigerator's self-diagnostic system has flagged this condition.
The most frequent cause is failed temperature sensor (thermistor) — the sensor has reached end of life or been damaged. Work through the checks below before calling a technician.
Haier classifies F1 as a technician-only fault. A single power cycle is the only DIY step — if the code returns, contact Haier service.
Temperature sensor faults directly affect food safety. If the code persists after a power cycle, verify temperatures with a thermometer before deciding whether food can remain in the appliance. Food held above 40°F for more than 2 hours should be discarded.
Most Likely Cause by Symptom
The Haier refrigerator may stop, pause, or refuse to complete the cycle normally.
Likely cause: Failed temperature sensor (thermistor) — the sensor has reached end of life or been damaged
Check first: SAFETY: No need to disconnect power for initial checks — but unplug for 5 minutes before restoring power for a full reset.
The warning may return immediately because the appliance is detecting an internal fault.
Likely cause: Wiring fault between the sensor and the control board — a connector has come loose
Check first: Power cycle the refrigerator: unplug for 5 minutes, then restore power.
Common Causes
- Failed temperature sensor (thermistor) — the sensor has reached end of life or been damaged
- Wiring fault between the sensor and the control board — a connector has come loose
- Control board fault affecting the sensor input circuit
What Not to Do
- Do not store perishable food in a refrigerator with a persistent F1 through F5 code — food safety cannot be guaranteed with a faulty temperature sensor
Model and Display Variation Notes
Model-family notes
- Haier 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.
- Some models may display the same fault as F1, F2, F3, F4, F5.
Display and panel differences
- Some control panels show this issue as F1, F2, F3, F4, F5 instead of only F1.
- Panel wording and whether the code appears with letters, numbers, or a longer variant can differ by model family.
Parts, Tools and Service Options
Service option
Haier 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 Haier refrigerator parts.
Common parts
- Temperature sensor/thermistor for the affected compartment ($10–$30)
- Main control board if the sensor input circuit has failed ($80–$200)
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
F1 returns after a 5-minute power cycle
- Internal temperatures are above safe food storage levels (above 40°F in the fridge or above 10°F in the freezer)
How to Prevent It Recurring
- Keep the refrigerator at least 2 inches from walls and cabinets to allow proper ventilation — overheating around the compressor area can stress temperature sensors over time
Related Error Codes
Extra notes
- This page is based on Haier 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: 2026-04-09
Based on: Based on Haier support material and edited into consumer-safe guidance for the exact code family on this page.
View Haier Appliances US Official Support
Model coverage note: Haier 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.