Masterbuilt Grilling - Recent Questions, Troubleshooting & Support
Why am I getting an EAA1 error after 5 minutes of first use?
I have the same model and drew this schematic after taking it apart to fix another problem. An EAA1 means that the control display unit is getting a bizarre reading from the temperature sensor on the box. Could be a connector problem or a faulty temp sensor. The temperature sensor has a long path through the relay power supply board in the bottom then up to the control display unit. Unfortunately the only place you can easily check is the 5 pin connector directly under the control display unit. Try reseating this connector. The box can be opened up to check everything else but it's a real bear.
on Jan 01, 2018
Set temperature, it goes past it, then it keeps going down until it shuts off
You can test the element by bypassing the thermostat. The element should come on and stay on, probably glowing cherry red. If it will continue to do that for an hour, then you know the element is good.
The problem sounds like a classic thermostat problem. It will come on from cold and up to temperature, but as it drops, the thermostat doesn't click back in because it is stuck open. Its sensitivity is gone, but when it goes cold, the temperature change is big enough to close the circuit.
on Sep 17, 2017
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