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    jeanb's Avatar
    jeanb Posts: 1, Reputation: 1
    New Member

    Dec 26, 2006, 05:40 PM
    Heating system
    1. What would cause my copper hotwater pipes to blacken with a sooty powder? We removed a wall during remodeling and found the pipes with a black sooty powder. It comes off on to your hand when touched.
    Plus, we found a plug with blackened cooper also..?
    Any help would be appreciated.

    2. What would cause my honeywell rectangle thermostat to engage to egnite the oil burner, shut off within 1 min.. . on then off on then off again. The heat does does not come on long enough. I tried moving the duration setting inside the box to no avail. Either it comes on and off or not at all.

    HELP! :(
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member

    Dec 26, 2006, 08:23 PM
    Are you sure the soot is not mold that has grown in the moiture of a condensating copper pipe? 2. I'm guessing, the problem may be in furnace and not the thermostat.

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