I turn the heater....it displays A04..and then it shuts off.

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.

Try pushing up, down and enter at the same time. If that does not work unplug and try again this should reset if the PCB is good.

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.

I have a RD125T heater. At first it would run for a while and shut down. Turn it off and back on it would do the same. Now when it is turned on it acts as if the switch was being turn off and on. Sometimes the heater will fire for a second then shuts down. Most of the time it just shuts down, Forest

your pc may be set to a resolution that is out of range for the monitor. Boot into "Safe mode" reset the Display settings to 640 x 480. reboot into normal mode then change the screen settings to your desired resolution.

buy a new printer