Either the power switch is shot or the temperature sensor is broken.
Old wall heater won t turn off.
Heat won t turn off separate article to see if the problem is definitely not the thermostat.
Then press the button again to light up the pilot.
After turning the dial failed to produce the click of the switch turning off and dialing the temperature all the way down didn t cool the room i assumed the thermostat had failed and replaced it.
Turn off your furnace completely including shutting down all electricity running to the furnace as well as turning off the gas and examine its controls.
I ve completely disconnected the thermostat removed the wires and just let them hang loose and still the burners are going full speed ahead.
There is no electric involved here no blowers no fans just the gas heat unit built into the wall somewhere about the time christopher columbus discovered america it s old ok.
Step 1 open the case in some cases your actual casing on the heater may be held together with special screws or bolts such as stars or hex bolts.
In the case where your unit won t turn off you are looking at one of two things causing the issue.
However the new thermostat shows what appears to be the same behavior.
When the thermostat turns off the heaters don t turn all the way off.
If a particular button is sticking down use your fingers or a pair of pliers to try to pull it back up again.
The new wall heaters ignite the pilot light with a spark.
Heat won t turn off.
The only way to shut it off is to shut off the gas to the unit.
After about 30 seconds release the button.
Don t go calling your furnace repairman just yet though.
For old wall heaters after turning the dial towards pilot hold down on the pilot gas button instead of the ignite button.
Section 2 if your furnace won t turn off after your set temperature has been reached.
Locate the main breaker panel for the home where the fuses are located.
Locate the gas shut off valve which is typically behind the wall in a panel or under the house.
Troubleshooting repair when there is too much heat or when the heat won t turn off this article explains where and how to turn off the heat if simply turning down the thermostat does not stop un wanted heat coming from heating radiators or baseboards.
Gas wall heaters whether vented or unvented can supply enough heat to warm a small or medium sized room and they can operate with propane or natural gas.
If your furnace won t turn off even after your house is at or above your programmed temperature then the problem is usually more complex.
Change the thermostat setting up or down.
How to troubleshoot gas wall heaters.
If the heating system won t turn off that is if heat keeps being delivered even when you don t want it set the thermostat to its lowest temperature setting and wait three to five minutes.
