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Older Williams wall heater question...

Hello - I have an older Williams wall heater that the temperature sensor has had to be replaced twice. Is this just faulty part or is this an overheating issue? They have unhooked the sensor and heater will work. When hooked back up, it doesnt work. Local APD verified the sensors were bad but said they had no idea why they were going out. Any input greatly appreciated.

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 22,889
    Temperature sensor? By which you mean the thermostat? Or one of the safety sensors?
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • I was told its a 'temp. sensor' but maybe its safety. Very small sensor with 2 terminals.

  • Jamie Hall
    Jamie Hall Member Posts: 22,889
    That looks very like an overtemperature safety. If so, that it has "failed" twice (they are sometimes one shot thermal fuses) suggests rather strongly that there is some other problem which is causing an overheating condition. Now what that is... depends on what that sensor is measuring, among other things. In any event, I'd be looking to figure out what the real problem is and fixing it.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Larry Weingarten
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,297
    @banffapartmentscv

    If those are failing, they need to find out why they are failing as @Jamie Hall said Maybe too much gas input over firing the unit or not enough airflow dirty fan or plugged filter if it has a fan and a filter.

    There is a problem they need to look for it. Problems don't always hit you in the face