Whirlpool F18

Whirlpool error code F18 indicates: Whirlpool 6th Sense Supreme Care & FreshCare+ Washing Machine: Excessive foam overdosing warning F18; pressure transducer senses suds accumulation preventing drain pump priming..

The primary root cause for Whirlpool code F18 is: On Whirlpool washing machines: High-foaming non-HE detergent used, massive overdose of liquid soap, or partially restricted drain hose trap..

To resolve error code F18: Allow suds to settle naturally for 30 minutes. Run cold rinse cycle without detergent. Clean drain filter and adjust future detergent dosing. Turn cycle selector to 6 o'clock (Drain/Spin), press Cancel/Reset button 4 times within 5 seconds, then cycle power.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Whirlpool code F18 persists, the physical component causing On Whirlpool washing machines: High-foaming non-HE detergent used, massive overdose of liquid soap, or partially restricted drain hose trap. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Mechanical Pressure Switch Contacts / Inductive Frequency Sensor across Across switch spade contacts with harness unplugged; electronic output: 40Hz–50Hz frequency signal. Expected nominal reading is Mechanical: Continuity 0.0Ω–0.2Ω (Empty: 11-12, Full: 11-14). Electronic: 20Ω–45Ω coil resistance.. Tolerance: Mechanical switch contacts must transition cleanly on gentle breath pressure. Coil ~22Ω ±5%..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.