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  1. M

    Ohm Meter Reading on Pentair Stack Flue Sensor

    I'm getting the E05 error on my MasterTemp 400. Reviewed the posts here, and I don't think I have any of the other issues that might cause this besides the sensor. Sensor is maybe two years old. Pulled the sensor to check ohm reading, but I'm not sure how to interpret what I'm seeing. When...