Question about Heating & Cooling
This could be due to a weak igniter which is not getting hot enough to ignite the gas, or the gas valve is not opening to allow gas to flow. First thing is verify if the gas valve is receiving 24 volts at the valve terminals, if not the board is bad, if it is receiving voltage the gas valve may be bad.
Posted on Dec 09, 2012
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Posted on Jan 02, 2017
Yes, the flame sensor is part of the intermittent pilot assembly. Check the following: make sure all grounding wires are secure and no corrosion is built up on them. Clean or replace the pilot assembly, also clean out the orifice with a very small drill. Make sure the sensor is in the flame and make sure the pilot tube is not leaking gas reducing the gas pressure at the pilot.
If it continues, you will have to replace the ignition control.
Posted on Nov 26, 2007
SOURCE: goodman furnace
Check the roll out switch(s) and the lock out switches. They are a small disc looking about the size of a nickle, with with 2 wires attached on them. There will be a re-set button in the middle that resembles a small peg. Push this in to re-set. As the glow coil shorted out, the fuse on the control board may have blown. On the newer furnaces find the main board and look for a car type fuse. If blown, replace. You also have the symptoms of a bad limit switch, by the clicking noise (the heat fan relay) and the blower fan running instantlly.
Posted on Jan 07, 2008
OK, if the furnace is not lighting for even a few seconds, you have either a bad gas valve, bad wire, bad control module or no gas. The pressure switch is not the issue. Check all wires to the gas valve and look for 24 volts across them when the ignitor glows and you hear the click. Then test for 24 volts to ground. It could be a bad ground wire.
Posted on Oct 21, 2008
Test while the unit is firing with a meter. you should have 24 volts going to gas valve. If you do and no gas is coming out, you have a bad gas valve. You will need a gas pressure test kit to install a new one correctly.
Posted on Dec 01, 2008
yes if the ignitor has a very small crack on it it will not work replace it and see if it works but do not touch the end that glows when you put it in as the grease from your finger s will stop it working
Posted on Jan 08, 2009
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