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My therma gas heater will not stay on . It ignits correctly, it also steps up to 3 pannels burning correctly, but you have to hold the grey gas button down for it to work. The pilot-type flame will not stay on. I think the gas flow to the pilot flame cuts off when you let the grey gas button up, when it should stay on. Where is the fault and what part do i need? Thanks Roy

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You need to replace the thermocouple. This is a small metal rod that is positioned in such a manner that when the pilot light is burning, the flame is contacting the thermocouple. When heated by the flame, the thermocouple produces a very small amount of electricity that it sends to the gas valve. The valve then interperets the electricity as confirmation that the pilot is burning and it is safe to conitinue delivering gas. Thermocouples wear out and stop producing power. The gas valve thinks that the pilot has gone out and thus turns the gas off for safety.

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Posted on Jul 05, 2008

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1 Answer

Heater will not ignite


  1. Do you have a standing pilot style heater = Milivolt
  2. or is it an IID = Spark style ignitor
  3. Or... Hot surface Ignitor = glows red hot like an auto cigarette lighter?

Most common problem I have come across over the last few weeks, is pressure switch not closing, meaning - dirty filter. Try cleaning your filter: backwash or rinse cartridges.

  1. is pilot staying on, and burning well?
    1. If so, is htr's gas valve in ON position?
  2. Do you hear sparking?
    1. If No, then one of the safety switches is keeping heater from firing...
      1. Toggle switch - on/off
      2. Thermostat - turned up high?
      3. Pressure switch - closes circuit when pump comes on
      4. 2 each high limits
      5. Fusible link / roll out switch
    2. If yes, either gas valve is off, is bad or the Ignition module is bad? Some call it grey box.
      1. You will need to test for voltage at the common and MV posts of the gas valve - 24 to 28 volts. If voltage = bad gas valve; if no voltage = bad IID Module (Intermittent Ignition Device)
  3. Do you see a bright red glow in the burner tray area?
    1. If yes, either fuel supply is off, or Ignitor has worn out and the glow is not hot enough to ignite raw fuel.
    2. If no, check voltage at Ignitor - depends on make and model of heater- could be as low as 24 volts and as much as 110 volts. So... No voltage at the supply wires = bad sending component, again depend on brand and model, could be ignition module, could be circuit board?
    3. If yes voltage, bad Ignitor
      1. Again, this is if fuel supply is confirmed.
Good Luck

May 08, 2015 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

Is there a trick to starting the Pyrox 400? Turned the fan on and press on low then repeatedly press the ignition pilot light, start to smell of gas after a minute. Won't start Help please


Is the ignition sparking? When you press and hold down the buttons, the ignition should be sparking at the centre electrode. At the same time when you hold the buttons down, the gas valve is manually held open to release the gas. The spark is then supposed to ignite the gas. Hold the knobs down for about 3 to 5 seconds after ignition and the gas valve will stay on. If it lights but the flame wont stay on, it could be anything from a partially blocked aeration port to a worn knob. When you push down on the knob, it is supposed to press down on an electromagnetic lock which keeps the gas valve open when the flame is burning. When the knob or shaft isn't pushing down enough, it doesn't keep the gas valve locked and the flame will go out as soon as you let the knob go.

Apr 19, 2015 | Heating & Cooling

1 Answer

New blue flame heater, everything is hooked up, gas is going to unit, I have a natural gas hookup, in the correct port, knob is turned and locked into the NG position but unit wont light. There is gas...


do you have the pilot light burning if not then you have to get in burning first
Put knob in pilot position push down and hold for at least 30 seconds or longer then if there is an igniter push and release it push and release till pilot light comes on .Continue to hold pilot light button down for another 10 seconds or so, release pilot button and turn button to on or up a number or set T stat
Main flame should come on and burn

Oct 13, 2013 | Procom Heating & Cooling

1 Answer

Wont stay burning if you let off ignition button


this could be a bad thermo coupling -- try and hold down the gas button for about 15 to 20 seconds while it is running and then let go and see if it stays running ( the thermo coupling needs to reach the proper temp ) -- if it shuts down after that then replace the coupling and all should be good.

c...

Feb 02, 2011 | Scheu (BG150T) Heater

1 Answer

Step by step instructions on how to start my heater


The correct order for lighting is:1)turn the valve to pilot. 2)hold the knob down and push the ignitor. It should light the pilot light 3) keep holding the button down for 15 to 30 seconds. 4)when you release the button, the pilot light should stay lit. If so, turn the knob to the desired setting.

Jan 29, 2010 | Vanguard International Infra Red - Medium...

1 Answer

Relaced thermostat and therma fuse, now dryer is tooo hot


Sound like the thermostat is not working bud first check and double check the thermostat is connected properly and the wires are on correctly (not mixed up)and check the stat probe or bulb is in the correct place to pick up heat(assumeing that the stat is not a energy switch wich has no bulb)If you are not sure where the wires go there should be a diagram on the inside of the back panel or go on line to the manufacturer site and get one from them,

Hope this is of some assistance

Jan 19, 2009 | Maytag PYE2300AY Electric Dryer

2 Answers

Blue flame heater pilot wont stay lit


There is a therma-couple that the flame burns against. When it is working correctly it allows gas to travel to the flame. When it goes out you get no gas, as a safety feature. Replace the therma couple and it should work again.

Oct 06, 2008 | Dyna-Glo D-E36 Infra-Red Wall Mounted...

1 Answer

Kenmore gas dryer 110.97566200 gas dryer is running throught the cycle but no heat.


Your Heating Elements could have problemA dryer sometimes won't heat or heats too slowly because of a variety of reasons. By following the guidelines below, you can inspect the heating elements on a gas or electric dryer to pinpoint the source of the problem.

Troubleshooting the Gas Heater

In a gas dryer, heat is provided by a gas heater that is controlled by an air shutter. The gas heater is generally the source of no-heat or drying problems. You can often correct such problems by adjusting the air shutter on the gas burner, which is located along the bottom of the dryer.

To adjust the shutter, take out the screws and remove the panel that covers the gas flame. Turn on the dryer so the flame is burning. If the flame has a deep blue color and you hear air whistling around the burner, the air/gas mixture is receiving too much air. If the flame has a yellow tip, the mixture is not receiving enough air. Turn the thumbscrew or loosen the two screws slightly to increase or decrease the flow of air to the burner. Keep turning until the flame is a light blue color, without any yellow, and the whistling stops.

Gas dryers use an electric ignition device rather than a pilot light to light the gas heater: An element becomes hot and glows like the filament in a lightbulb. Electric ignition systems are always sealed; you can't adjust or repair them. If an electric ignition device fails, call a professional service person for replacement.
how-to-repair-a-dryer-2.jpg
©2006 Publications International, Ltd.
In a gas dryer, heat is provided by a gas heater, controlled by an air shutter.
Electric dryers have self-contained electric heating elements.

Servicing the Electric Heating Elements

Electric heating elements, found in electric dryers, are self-contained units located in the back of the dryer. A defective heating element is frequently the source of no-heat or drying problems. Remove the back service panel to gain access to the elements.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with a volt-ohm-milliammeter (VOM) set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher than 20 ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.

The heater may also malfunction because it's grounded. To test for this, set the VOM to the RX1 scale and remove the leads to the heater. Clip one probe of the VOM to a heater terminal and touch the other probe to the heater housing. The meter needle should jump to a fairly high reading. If the needle flicks back and forth at a low reading, the heater is probably grounded and should be replaced. Here's how to replace the heater:

Step 1: Remove the back of the dryer. If necessary, also remove the cabinet top.

Step 2: Disconnect the leads and remove the screws that hold the duct in position. Then lift the entire heater unit out of the dryer.

Step 3: Remove the screws that hold the heating element in the duct.

Step 4: Slip the new heating element into the heating duct the same way the old one came out. Be careful not to damage the resistance coils. Replace the screws that hold the heating element in the duct, reconnect the leads, and screw the unit back into position

Aug 04, 2008 | Kenmore 63942 Dryer

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