I am having a problem with my heating unit. The board is GMP100-3. When I turn on the heating unit, the inducer motor starts, ignitor glows and then nothing happens. The gas will not flow in to start and ignitor turns off and whole thing stops. This repeats for 3 times and then systems shuts down. I do hear few clicks during this cycle. What can possibly be the problem? Can anyone help??
Check the flame sensor near the ignitor....it could just be dirty. Check that first. Check the electrical connections to it. Also, check the flame sensor's position. It must be within the correct proximity of the ignitor to tell the gas valve to open. Make sure the gas is on to the unit.
From another forum on this unit:
At the top of your burner section there is a flame sensor.
It is a rod metal rod with ceramic around it.
It has one wire coming from it.
Remove the sensor . get steel wool, not sandpaper.
Clean the rod section.
Put back together.
This is an easy fix.
But remember to get your furnace serviced as there is a reason that you have a build up of **** on the sensor.
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There is a pressure switch near the inducer (about a 3" diameter circle with at least 2 wires and a plastic tube running to it) that checks to see if the inducer blower is running and if the air is flowing through the heat exchangers. Does the inducer motor come on? If so, put a volt meter across the pressure switch terminals. If it is working there will be 24 VAC across it when the furnace comes on and when the inducer gets up to speed, the switch should close and the voltage will drop to zero.
If there is never any power, check all of the wiring to the switch. Also check the voltage from both wires to ground. At least one should have 24VAC when the furnace is on.
If there is constant 24VAC then you might have a restriction in the vent or pressure switch tube, or you might have a bad pressure switch.
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Make sure the furnace intake or exhaust isn't obstructed by debris or animal nests
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Hi,
If you are having problems with your
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properly.
if
you dryer is gas check out this gas
no heat
tip....
If you have an electric dryer, you can
have many different things that can go wrong causing the dryer not to
heat.
check
out this electric
no heat
tip...
heatman101
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Isn't flame sensor far away from the ignitor? Mine is on the other side, in front of the last gas pipe. I thought that flame sensor is to detect the flames coming out of gas pipe and not the ignitor. Is there a separate flame sensor near the ignitor??
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