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Not heating up, igniter working and hose is clear

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Just because the ignitor is working, that does not mean that it is good...
If you have a gas dryernot heating up, igniter working and hose is clear - 2_bing.gif.
The most common problem with a gas and no heat is the ignitor going bad...

Here is a tip that I wrote about that problem...

If your dryer2_bing.gif is electric2_bing.gif..
There could be a number of different problems...
Check out this tip that I wrote about this problem...


Posted on May 03, 2010

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1997 vt 3.8 commodore heater not heating valve hot one hose into firewall hose blower working.

could have a blockage in the heater matrix , drain the coolant system and reverse flush through to see if that will clear the matrix refill and test ,if you are able to disconnect the two hoses to firewall clamp them off and remove then flush the matrix through then refit hoses if the flush goes through ok, try this one first as less work for the same result , if still no heat remove the matrix for inspection etc

Jul 22, 2014 | Cars & Trucks

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Samsung gas dryer heats up and then stops. No lint in dryer trap or hose. What could it be? Heating Element? Reset button? Please help! !

The key to your issue is the gas dryer. you need to know how it works to be able to diagnose it. A gas dryer will only fire up if the thermostat calls for heat and the hi limit thermostat is not tripped and the gas valves open and the igniter fires. Any of these not working will not lt dryer fire up the heat.
lets assume the running thermostat is ok since it fires up initially and they seldom are intermittent. A restricted vent would trip the high limit t-stat quickly and would not fire up again till it cools down and resets, since you have stated that the vent is clear and unrestricted we will again assume the hi limit stat is not the problem
(it still could be if it was faulty and opened up prematurely, but again that is not one of the more frequent issues). The flame detector needs to be satisfied to continue the burn after flame is ignited. The detector is a simple device that is located on the burner plenum and is a bi-metal with a clear window that lets light (flame) through to a bi-metal switch that will interrupt gas supply in case there is no flame. these again are not on the most frequent list of parts going bad.
The most likely cause of this problem is a bad igniter. they glow orange on start up and ignite the gas. even though they glow orange does not mean they are good, most develop cracks in the ceramic material and are very brittle. If a crack is present you seldom can see it and often will look normal in operation, but once heated the second cycle of heat fails to ignite. This can be measured cold by resistance check compared with standard value. I often just change them on a hunch , saves time and part cost is not high. Labor time is often higher checking it's value. Another possibility is an intermittent gas valve and that is harder to diagnose and it is an expensive part. Seldom is the valve intermittent though.
This should give you a good start, good luck

Jun 27, 2014 | Dryers

1 Answer

Fagor compact plus

You could have a defective gas control valve or a bad thermocouple. Also check the venturi tubes again. sometimes cob webs collect in them and it may be difficult to see unless you remove them and check.

Good luck,


May 05, 2014 | Water Heaters

1 Answer

I have goodman central air system. AC works, fan on works, heating does not. When I have heat on led flashes 3 times( pressure switch open), I blowed at the rubber hose and I can hear the clicks. I re

Check to make sure the orifice on the inducer motor is clear if it is clear **** on hose going to pressure switch to make sure it closes if ur hear it click while sliwly sucking look to see if igniter lites if igniter lites ur heat should work if it doesnt lite then the pressure switch may be bad

Nov 04, 2012 | Heating & Cooling

1 Answer

Tries to ignite 3 times but does not ignite. Red light blinks 7 times usually when not working. Last time it was 8 times. Had service person in, but they have not found out what the problem is.

Sounds like a safety device is open, the pressure switch or if older unit it will have another type of safety switch, but the switch has to close when a call for heat begins. A pressure switch on newer units have a small rubber type hose to a port on the heater next to draft motor assembly, check the hose and port for a restriction, if all clear then the pressure switch may need replaced.

Feb 24, 2011 | Dayton Gas Furnace Heater

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Evcon furnace, 3 red flashes indicates that the "pressure switch open". Thermal stat is set to automatic and set to heat. It sounds like it is trying to start but then turns off then will sound like it is...

I have 2 of these furnaces in my mobile homes. The booster assembly that has thea clear hose attached to it has a small wheel in it. Remove the 4 screws to this assembly and give the wheel a push. For some reason these tend to hang up after a few years. Freeing this wheel will allow the motor to engage. Simple solution to spending big bucks on unneeded parts :)

May 12, 2010 | Coleman Propane Forced Air Heater...

1 Answer

It just stopped heating

If you have a gas dryer the burner is ignited by a eletroniic ignitor. It will make a ckicking noise upon starting it when set in the heat mode. You should hear the click or clicking noise it makes within 30 seconds after starting the dryer. If no click is heard, replace the spark ignitor

Mar 30, 2010 | Dryers

1 Answer

Have comfortmaker furnace. 4-yr old. used maybe 30 dys in attic.igniter failed and replaced it.lite off and it ran for about 10 min and quit.igniter still good. troubleshooting light show hearbeat.will not...

When you replaced the igniter did you touch the metal part of the igniter? If you touched it then the igniter may be bad again. I think the pressure switch may be stuck. The pressure switch is round may be plastic or silver metal, it will have one or two rubber hoses on it. Pull the hoses off the switch and blow through it to clear hose to furnace. If you furnace is a 90% efficiency model then your drain going outside may be frozen and if it is then cut the drain so that only 6" sticks outside the structure.

Jan 11, 2010 | Comfort Zone CZ-800 Heater

3 Answers

Furnace dont have heat

pressure switch stuck take off hose **** on it then put back on

Dec 21, 2008 | Amana PTC153B35AE Air Conditioner

1 Answer

Furnace keeps running, no heat

The pressure switch is not allowing the igniter to heat up. Pressure switch is blocked or the flue is blocked. Take the draft fan off and inspect the flue. Also inspect the rubber hose connecting the fan and pressure switch make sure the ends are tight. Make sure the hose is clear and not restricted. And the pressure switch sometimes is position sensitive. I don't think it has been moved or anything. And very rarely do they go bad.

Dec 02, 2008 | Honeywell Power Humidifier: Furnace...

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