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150s lwco

Many scenarios here, but switches do stick and over feed either your condensate pump and or the LWCO. I have found in the past that the incoming water supply to the feed on the LWCO would not allow it to fully seat. It slowly came in and would eventually flood the system.

Mike T.


  • tom_86
    tom_86 Member Posts: 1
    150s lwcutt off

    recently our large one pipe system flooded several times. the pump from the reserve tank would stay on and flood the systerm. The Contractor we have servicing the boiler replaced the entire head assembly 150s float and switch.
    The same thing happened a week after the float was replaced. They went out and got a mercury switch. It hasn't happened since.

    I don't think it is the float that was problematic(although it WAS in bad shape)and i'm not sure if it is the switch. A new snap switch shouldn't stick in less than a week should it?

    There are two (what look like light switches) between the lwco assembly and the pump
    The pump is 6.4 amps, the snap switch says to not use without relay if over 7.4....
    Just wondering????
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