Code A04 is displayed when I turn heater on then heater immediately shuts off
Replace 1000uf@16volt capacitor with 1000uf@25vdc.
The control board has a fault. It can be repaired. I have been repairing these units since they have been on the market. You can contact me at [email protected].
It either has a short in the wiring or may need a new PCB
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.
Comfort Zone heaters do not have a display board, they
only had thermostat knobs.
Is it possible that you have a different model of heater?
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