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munchkin boiler F09 error
model 140m R2 .... The flame rectification probe part# is 7500P-039. When I ordered a new one I received part# 7250P-049 which is longer than the 039. I installed it anyway and monitored the voltage which did reach 4.0 volts and the boiler is working fine. Is there any reason why I should not use the longer probe?