What is code A04

there are a variety of causes for this. any one of the safety systems may have detected a fault and thus wont let the heater run. if there is no electricity, the heater wont run. if there is insufficient water flow, the heater wont run.

It either has a short in the wiring or may need a new PCB

It is either a bad pcb board or you may have a short in the wiring.

AO4 is a PCB Board used for some of the Comfort Zone heaters distributed by Earth Wise. Try using the up, down and enter for a reset of the unit. If this does not work unplug and try again.

Appliances fault A04 has different meanings depending on the type of appliance. Please see below for further detauls:

Also see our video section for help.

Error: A04,
Machine: Dishwasher,
Type: EV02 Module,
Fault: The selected temperature was not reached within a given time.Check thermistor and heater


Error: A04,
Machine: Dishwasher,
Type: Standard Module + FDW70 + FDW75,
Fault: Heating fault.Check thermistor and associated wiring

Hope helps.

code 55 is Completion of fault code display on Malfunction Indicator Lamp.

Code 12 is: Battery input to PCM disconnected during last 50 key starts.

you may have a bad heating element..or temperature sensor the water temperture is not getting hot enough to let the dishwasher run. you my reset it and try running the water in the sink until it reaches hot ... then try stating the dishwasher...let me know if this helps