Whirlpool F23
Heater Failure
Medium severityExpert Guide
SeverityMedium
What Your Machine Is Actually Telling You
F23 means the CCU detected the heating element isn't drawing current or isn't raising water temperature within the expected time.
Common causes:
1. Heating element burned out (35%) — internal wire broke.
2. Element ground fault (15%) — leaking current to ground.
3. Wiring issue (15%) — connector corroded.
4. NTC sensor (10%) — false temp reading.
5. CCU relay (10%) — not powering element.
6. Limescale (10%) — insulating the element.
7. Tripped breaker (5%) — partial power.
Common causes:
1. Heating element burned out (35%) — internal wire broke.
2. Element ground fault (15%) — leaking current to ground.
3. Wiring issue (15%) — connector corroded.
4. NTC sensor (10%) — false temp reading.
5. CCU relay (10%) — not powering element.
6. Limescale (10%) — insulating the element.
7. Tripped breaker (5%) — partial power.
What You're Probably Seeing Right Now
- F23 during hot/warm wash.
- Cold wash cycles work fine.
- Clothes coming out cold and poorly cleaned.
- Machine trips breaker on hot — ground fault.
DIY Fix — From Easiest to Hardest
1
Power Reset (5 minutes)
1. Unplug 5 minutes.
2. Try cold, then warm.
2. Try cold, then warm.
2
Test Heating Element (5 minutes)
1. Unplug.
2. Access element (bottom of tub).
3. Disconnect terminals.
4. Measure: **20-40Ω** = good. OL = dead.
5. Ground test: terminal to sheath = must be OL.
6. Any reading = ground fault, REPLACE.
2. Access element (bottom of tub).
3. Disconnect terminals.
4. Measure: **20-40Ω** = good. OL = dead.
5. Ground test: terminal to sheath = must be OL.
6. Any reading = ground fault, REPLACE.
3
Descale Element (15 minutes)
If element measures OK but heats slowly:
1. Run Tub Clean with white vinegar.
2. Dissolves limescale buildup.
3. Repeat monthly in hard water areas.
1. Run Tub Clean with white vinegar.
2. Dissolves limescale buildup.
3. Repeat monthly in hard water areas.
4
Replace Element (30 minutes)
1. Remove retaining nut.
2. Push center bolt inward.
3. Pry element out.
4. Clean sealing area.
5. Install new element ($20-50).
6. Reconnect and test.
2. Push center bolt inward.
3. Pry element out.
4. Clean sealing area.
5. Install new element ($20-50).
6. Reconnect and test.
When to Call a Pro
- •Element replacement — $80-$200 installed.
- •Ground fault — MUST be replaced (fire risk).
- •CCU relay — $200-$500.
What It'll Cost You
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