LG Washer HE Error — Temporary Heater Error Fix

What it means

LG washer HE error means a temporary heater error — LG's specific code for the water heater not reaching target temperature.
Most cases are heater element failure, heavy limescale on the element, or wiring problems between the heater and the control board.

Affected Models

LG Front Load Washer
LG Top Load Washer
LG WashTower (combined washer + dryer)
LG TurboWash Washer
LG TwinWash Washer

Common Causes

Heater element burned out (open circuit)
Heater element scaled up — won't transfer heat to water
Temperature sensor (thermistor) faulty
Wiring loose between heater and control board
Insufficient water in tub during heat phase

How to Fix It

Run a cold-only wash to confirm.

Try a cold wash cycle.
If it completes without HE, the heater is the culprit (cold doesn't use it).
If HE still appears on cold, the temperature sensor or control board is at fault.
Run a descaling cycle.

Run the Tub Clean cycle with a descaling tablet or a cup of white vinegar.
Heavy limescale on the heater element prevents heat transfer and triggers HE; descaling restores it.
Particularly helpful in hard-water areas.
Check household power.

Heaters draw 2 kW.
If your circuit can't sustain that, the heater may not get full power and trip HE.
Try the washer on a different circuit if possible to rule out supply issues.
Replace the heater (technician).

If cold washes work and descaling doesn't help, the heater element needs replacement.
Order an LG-branded element matching your model.
Replacement is a 45-60 minute job for a technician.

When to Call a Professional

Heater replacement is moderately involved — usually a technician job unless you're comfortable with the back panel off.
Element costs around £20–£40; labour adds the rest.

Frequently Asked Questions

Can I keep using my LG washer with the HE error on cold cycles?

Yes — most LG washers will allow cold cycles to complete even with HE pending, since cold doesn't use the heater.
You can keep washing on cold while waiting for the heater repair, but you won't be able to do hot washes for whites, bedding, or anything that needs sanitising.
If your normal wash routine needs hot water for hygiene reasons (cloth nappies, gym kit), arrange the heater repair sooner rather than later.