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  1. J

    Honeywell boiler F04 (F4) Error - Problem with Actuator?

    My Honeywell boiler as of today is presenting me with a F04 (F4) error. I've replaced the actuator with a brand new one however this has not resolved it. From what I recall the actuator should receive power and move to control the flow of water; however I don't think it is actually getting...
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