⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: Er 18F Difficulty: Moderate
Problem: Communication error with the pantry drawer. The main fridge control cannot talk to the user panel on the drawer. Check the wiring harness at the hinge.
How to Fix Er 18F Error
-
- UNPLUG refrigerator from electrical power.
- Locate freezer thermistor: typically behind evaporator cover or mounted on freezer wall.
- Remove access panel covering evaporator coil (may require removing shelves/baskets).
- Disconnect thermistor wiring harness. Note routing path before removal.
- Measure resistance across thermistor terminals with multimeter at current freezer temperature. Compare to resistance chart in service manual (e.g., at 0°F/-18°C should be ~17kΩ).
- If reading is infinite, zero, or significantly deviates from chart, replace thermistor.
- Remove mounting clip/screw securing sensor. Gently pull sensor from clip/well.
- Install new thermistor using OEM part W
- Secure in mounting clip. Route wiring away from sharp edges.
- Reconnect harness. Reassemble evaporator cover and interior components.
- Restore power. Monitor freezer temperature display for 2 hours to confirm accurate readings.
Recommended Replacement Part
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
⚡ Don’t Risk a DIY Fail!
Get the ‘Secret Service Mode’ Cheat Sheet for your Whirlpool model. Includes an easy-to-read list of every error code and quick diagnostic tips.
✅ Join 15,000+ DIYers • Instant PDF Download
Browse More Codes
📖 View All Error Codes
Most DIY parts are $50–$250. If you have a quote, use the total.
More options (for a better recommendation)
Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →
Leave a Reply