Error Code HE

HEATER ERROR

Also displayed as: HE

What This Means

Wiring connection faulty; Inlet water temperature too high; Thermistor damaged; Heater defective (fuse or thermostat shorted); Main PCB (Controller) damaged; Relay circuit faulty

How to Fix

1. 1

   Check wire connections and reconnect if needed

2. 2

   Check if heater operates during course or in Control Mode

3. 3

   If Heater does not operate: check Heater connector — reassemble if removed or not connected properly; if fuse or thermostat is shorted, replace Casing Assembly, Pump (includes heater); if fuse and thermostat are not connected properly, replace Casing Assembly, Pump

4. 4

   Check Heater resistance — should be 11.54 Ω ±10%; if out of range, replace Casing Assembly, Pump

5. 5

   Check Main PCB: if output voltage of Main PCB is bad (should be AC 110–120V), replace Main PCB

6. 6

   Check inlet water temperature: enter Control Mode, supply water, and check Sump temperature; if temperature exceeds 85°C, swap hot and cold water supply pipes

7. 7

   Check and replace Relay Circuit if faulty

This Error Applies To

LG LDPH7972S Series Dishwashers