...goes into the code after reset, it's probably a "fan motor abnormality" (61 code). This code is either caused by inadequate voltage to the unit (less than 120VAC), or by a damaged fan
...code, but here are some of the more common codes associated with 4 flashes: 20 - high limit switch; typically caused by scale in heat exchanger: I recommend performing a descale 66 - water flow ...
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