york furnace

  1. e2139adfa

    Heater Running But Thermostat Went Blank -- Help Please!

    My honeywell wifi thermostat went blank while my heater was running yesterday and now I can't shut off the heater unless I unplug the York furnace. Here's what I've checked so far but still can't figure out what's wrong and the cause of my blank thermostat. Would appreciate if anyone can give...
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