Haier Washer Error Code Err4 — Heating Element Failure
What this means
Error code Err4 on Haier washers indicates the water heating element has failed. Unlike Err3 (temperature sensor), Err4 specifically points to the heater itself — it is not drawing current or the control board detects no temperature rise when the heater should be active. Causes include a burned-out heating element, a blown thermal fuse on the heater assembly, or corroded/disconnected wiring to the element. This code only appears on models with built-in water heaters (typically front-load units with sanitize or hot wash cycles).
Alternate codes: E04, Er4
Step-by-step fix
3 stepsTest the heating element
Unplug the washer. Access the heating element — on most Haier front-loaders, it is at the bottom rear of the tub. Remove the rear panel, disconnect the element leads, and test with a multimeter. A good element reads 20–40 ohms. OL means it is burned out.
Also test for ground fault: one probe on a terminal, the other on the metal tub housing. Any continuity means the element is shorted to ground — a potential shock hazard.
Check the heater wiring
Inspect the wiring from the element to the control board. Look for burned or melted connectors, especially at the heater terminals where heat damage is most common.
Heater terminal connectors are the most common failure point — they corrode from heat cycling and can lose contact.
Replace the heating element
Remove the locking nut on the element flange (center bolt), push the bolt inward slightly to release the rubber seal, and pull the element out. Install the new element with a new seal gasket, tighten the nut, and reconnect wiring.
When tightening the center nut, go slowly — overtightening will cause the rubber seal to bulge inside the tub and leak.
When to call a professional
If the element and wiring test good but Err4 persists, the control board's heater relay or triac may have failed. Board-level repair requires professional service.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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