Question about Heaters

2 Answers

Wall furnace troubleshooting

My 20yr. old wall furnace pilot keeps going out. I know the thermocouple may be the problem, but I am wondering if a resistance check of this part can be performed to check. I also wonder about how I can check the "safety" shut-off devices designed to stop heater if they detect improper venting or other problems.

Posted by on

  • pijo30 Apr 04, 2009

    I have the same problem of the pilot light going out or not wanting to stay lit at times. I thought it was blowing out from drafts. I also thought the thermocouple only sends the signal to open the gas valve after you raise thermostat. does the pilot go out on it's own if the thermocouple is bad?

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 833 Answers

A thermocouple is inexpensive.  Replace if in doubt.  Get a professional in to do safety checks.  You may also want that individual to replace the thermocouple.

Posted on Nov 26, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Heater lights and the flame pulses high-low high-low until it shuts down. Pilot light stays lite.

Posted on Feb 22, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I AM WORKING ON A COZY W501E WALL FURNACE AND CANT GET THE PILOT TO STAY LIT. i HAVE CHANGED THE GAS VALVE, THERMOCOUPLE,AND THE SENSOR FOR THE HIGH LIMIT. THE PILOT WONT STAY LIT.


Pretty much the only thing that will do that is the thermocouple not generating enough voltage for the valve to say it's OK.
Usually you need to hold the button for pilot lighting for 60 seconds. You can use a meter to check that it's generating enough power. The thermocouple has to be in the pilot flame properly.

Check this video:
https://www.youtube.com/watch?v=suen7QlJl4o

Gas furnace will not light Thermocouple test with the multimeter

Or see this site:
How to Test Thermocouple with Multi Meter Heating and Cooling

Feb 11, 2015 | Cozy Heaters

1 Answer

Williams wall furnace model 5009622A pilot light will not light


make sure the thermocouple is sitting 3/8 to 1/2 inside the pilot flame when lighted. if it isn't, it wont generate enough dc current to keep pilot on

Dec 30, 2014 | Williams Heaters

1 Answer

Williams wall furnace 5009622 the pilot light will not stay on


Hi,
The thermocouple is bad and needs to be replaced...
The thermocouple is the copper rod that sticks up into the pilot flame and then screws into the gas valve...
they are sold by lentgh so you need to measure the old one when you go to buy a replacement...

heatman101

Jan 06, 2011 | Williams (5009622) Ceramic Gas Wall...

1 Answer

How do you turn the pilot light back on? This is an older model, probably about 10 years old or so.


Move the gas valve knob to the PILOT position and press down on the knob. You will be pressing down on a spring loaded safety magnet. Now light the pilot and keep holding down the knob till the thermocouple gets hot enough to produce electrical current and hold that spring loaded magnet in. This is your safety device. If the heat gets too hot the furnace has a fuse in line with that magnet.
When the pilot stays lit by itself without you having to hold down the button then advance the knob to the ON position. Then go to the wall thermostat and turn on the heater.

HOW IT WORKS: WILLIAMS WALL HEATER

Nov 11, 2010 | Williams 6508732 Gas Heater

1 Answer

How and where do I replace a thermocouple on a warm glo wall furnace? Help


There should be a thermocouple in front of the burners that has a copper colored wire that runs from the gas valve to the thermocouple. It is located in the pilot flame as it is a pilot proving switch that tells the gas valve the pilot is lit and its okay to open the gas valve to the main burner.

Mar 21, 2010 | Desa International Blower Glow Warm Wall...

1 Answer

Pilot Light won't stay lit on wall furance


The low voltage wiring and the thermostat has noting to do with the pilot function of the wall furnace, check to see if when you have the pilot lit manually, while holding the button in does the flame impinge on the thermocouple and does the flame try to wrap around the thermocouple? if not the thermocouple and pilot flame need to be adjusted so that it impinges on the TC, if it does have a good flame impingment, then you probably have a bad TC from the factory, call them and have them send you a new one if still under warrenty.

Jan 20, 2009 | Williams 1403622 Gas Compact Heater

1 Answer

Pilot lights fine, furnace fires up, when it turns off the pilot goes out


need to have at least 3 feet of vent out of the roof, if it is to low the coll air will cold soak down to the pilot and shut it down.

Nov 08, 2008 | Cozy (W352E) Heater

4 Answers

Williams wall furnace, top vent.


I've replaced a Williams wall gas heater non-electric. The thermostat is connected right and mounted on the wall. But, there's a thick black copper wire on the side of the furnace tagged thermostat. I don't know what to do with it? Where do you connect this wire? When it touches the top screw of the three screws running vertically(where the other wires are connected). The burner lights up and stays on, even if you play with the wall thermostat. Touching the other two screws doesn't do anything. Now, the manual talks about connecting it to the venting wires? Extra wires coming from the top or maybe somewhere else in the wall? I've left it connected to the first screw, ran the heater. But, it never turns off? Any suggestions? Thanks

Dec 13, 2007 | Heaters

Not finding what you are looking for?
Heaters Logo

Related Topics:

1,725 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heaters Experts

paulcarew

Level 3 Expert

1863 Answers

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Mack Baxter

Level 3 Expert

379 Answers

Are you a Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...