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Ultra 105 stuck on stand-by

Rpb Member Posts: 1
I can't seem to get my boiler off of standby. This Spring there was a power outage and sort of a brown out and since then when I put up the thermostat the circulating pumps go on but it doesn't fire up.


  • Leon82
    Leon82 Member Posts: 684
    What is the temp outside?
    Some modcons will block heat calls if the outdoor sensor is above a certain temp set in the parameters