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It is meant to shut off when it gets so cold that the unit cannot make warm air from outside air that is too cold. When it reaches that situation, it should be switching the heating effort to the built in resistance heating. In other words, it gives up and directs that many KW of electricity go straight into heater coils, like and electrical dryer has. It is very expensive to heat this way. Most whole house heat pumps can't handle cold air. The newer mini split ductless heat pumps lower can work with outside air temperature below freezing depending on the manufacturer.
the pilot light runs from a very small gas jet and should not be affected by the power outage
however that is not to say that the jet may have frozen over and become blocked putting out the pilot light
AS the system needs power to drive the fan it is possible that without the fan and safety system working , the main gas supply solenoid would have shut down and that could have affected the pilot light
with the power reinstalled try lighting the pilot light
I would say that there would be a pizo starter on the front of the unit to light the pilot loght
Hi, The 4 blinks means that the high limit switch or the regular limit switch are tripped... try to find the high limit switch... it is usually near the blower...there will be a red reset button in the center of it... push it in and the unit should work again... if the regular limit switch is kicked you may have to replace it for the unit to work again... This often happens after a power failure if the unit was running at the time of the failure. If you did not have a power failure, then find out why the limit switch kick out...
Here is a tip that will help you try to figure out why yourfurnace is not working.
Marc, look for where the gas line enters the furnace and remove the panel adjacent to it. That should gibe you access to the pilot light. Also, look for a pilot access door, near where the gas line enters the furnace. The gas line will either be 1/2" flexible copper tubing. 1/2" black iron pine or 1/2" vinyl coated flexible stainless steel. Look for the lighting instructions inside or on the side of the unit.
these units has 4-steps in heating mode... step-1 when the thermostat calls for heat, the small vent fan comes on and proves that its blowing thru the suction tube and closes a switch,,, step-2 -the next click from the gas valve, the pilot lights.......the #3 step and the next click from the gas valve the main gas comes on and heat up the box. step-#4 the box heats ups and turns on the fan switch and blows heat through out the home, now wheres the steps stops, thats where your problem is located>T Y V MUCH!
i think the ca # is for the cooling coil unit - the heater should start with gmXXXXX - if your unit is fairly new - the pilot light electronically when thermostat calls for heat the unit will not light if the burner door is open
we are trying to loacte teh starter for the pilot. Seems to kick on but no hot air, so not heat throughout the house. Sorry, total mentally challenged in basic home appliance repair...
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