Error Code HC
The water inside the dishwasher got dangerously hot
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: HC
What This Means
Heater element stuck on or relay welded closed; Thermistor defective (reading incorrectly low, causing heater to run too long); Main PBA heater relay not shutting off properly
What actually causes this:
Either the heating element will not shut off or the temperature sensor is giving wrong readings, causing the water to overheat
First Thing to Check
Turn off the dishwasher at the circuit breaker immediately and do not use it until repaired
Parts Involved
How to Fix
- 1
1. Check the operation of the thermistor — see tC check code procedure
- 2
2. Check the heater relay — see HC1 check code procedure
- 3
3. If thermistor and heater relay test normal, replace Main PBA
Other Error Codes for DDW24M999UM
The dishwasher cannot pump the dirty water out
The touch panel and the control board are not communicating properly
The drying fan is not spinning fast enough
A control panel button appears to be stuck or held down
The main wash pump that sprays water is not working properly
The heating element is not warming the water properly
Water is leaking inside the base of the dishwasher
The dishwasher's main computer board and display board cannot talk to each other