Question about Desa International CBN20T Heater

1 Answer

Wall mounted CBN30T, pilot goes out

I have a wall mounted CBN30T,I just started using last week, it works for about 20 25 mins. So I cleaned it, wiped the dust off everything and compressed air.

When I cleaned it I took the glass plate off. Which seemed to help more than anything. When I put it on the pilot flame chokes, it will try to stay lit but generally cuts off after a few mins, the thremocoupler doesnt seem to turn it off, I think the pilot flame goes out, which triggers the coupler to shut the valve and then the whole thing turns off. Since Ive cleaned it, and left the plate off, it works 30 mins to an hour.

Is the gas/air mixture off?
Would that cause the pilot flame to struggle to stay lit?
It doesnt last long at all with glass plate on, making me think it needs more oxygen to stay lit properly.
Perhaps the pilot should somehow be aimed more into the burner flame? so that the burner flame keeps the pilot lit. (Ive seen the burner reignite the pilot several times, which is why I think the pilot light is the source of the problem.)
Im renting, landlord is nice enough, can call the the right people if need be, but Id rather get warm asap, and I like doing things myself.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Desa Interna... Master
  • 2,550 Answers

IF its balance flue it could be blocked . Burner or orifice blocked lack of air to pilot slightly blocked thermocouple defective .

Posted on Mar 04, 2017

Ad

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 2 Answers

SOURCE: CBN30T,DESA, pilot lights, but flames out when the

ONLY ONE OR TWO THINGS AT FAULT.YOU HAVE A BAD THERMOCOUPLE.THIS IS PROBLEM 90% OF TIME AND CHEAPEST REPAIR.IF THIS DOES NOT SOLVE PROBLEM GAS VALVE IS BAD.HOW IT WORKS:THERMOCOUPLE WHEN HEATED WITH PILOT FLAME CREATES ASMAAL ELECRTRCAL SOURCE THAT HOLDS A MGNET OPEN AFTER HOLDING THE PILOT DOWN FOR ABOUT A MIN..THEN TURN GAS VALVE TO OPEN POSITION AND MAGNET WILL HOLD GAS VALVE OPEN.IF GAS VALVE DOES NOT STAY OPEN IT USUALLY INDICATES BAD GAS VALVE

Posted on Oct 13, 2009

  • 4 Answers

SOURCE: I have a blue flame GLO WARM 20btu wall model # WMP20A

Look for and clean the flame sensor.

Posted on Dec 06, 2009

  • 30 Answers

SOURCE: I have a model VMH26TNB unvented gas heater. The

  1. You can try repositioning the thermostat bulb.
  2. It's possible that the valve is defective.

Posted on Mar 10, 2010

  • 2 Answers

SOURCE: I have a glow warm 20000 btu natural gas unvented

well, these heaters are typically thermostat-bound, and I have found that they simply will not burn continuously, like a blue-flame heater. Try turning up the setting--this will make it come on/off more often, effectively heating at least one med-lg room, and partially for adjoining areas. Keep in mind that these only rated for 700-1500 SF--that is NOT the floor measurements, but square feet of airspace; eg., a 10' x 15' room has 10' x 15' x 8' (8 foot ceiling) =1200 sf. That said, My 15k btu wall unit had been the sole heating source for my entire home for 5 years, until last year, when I acquired another smaller unit. However, I typically only use a few rooms, and shut off unused areas (ya, was 'cool' in unused back room areas).

Posted on Jan 19, 2011

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 having a problem with a cbn 30t wall mount heater with the front cover off the unit works fine when the front cover goes on the pilot flame gets erratic then goes out. if I have the front cover on and...


I worked on plenty of them. Usally it is the termocoupling needs replace. It's easy to replace and you can pick that up at Fagers, Michells, or a heating and plumbing store.

Nov 02, 2013 | Desa International CBN30T Central Heating...

1 Answer

My heater, modle # cbn30t when I turn the pilot light on and ignite the fire it works for about 30 seconds and then stops, is this common and does anyone know how to fix it?


One possibility is that theThermo Couple is beginning to fail'
What is a Thermo Couple? (TC)
The Thermo Couple (TC) is a small Rod-shaped device with a couplewires coming out the bottom.
The TC actually generates a small electrical current from the heat ofthe Pilot.
This electrical current is sensed by the controlboard, or the Main Gas Valve.
As long as there is a pilot, it is safefor the Main gas valve to open, and admit the large amount of gas into theheating burner.

Now-- What helps this TC work the best?
It needs to be just at the edge of the pilot flame--- Not too muchin the flame, or the resulting poor combustion of the pilot flame, results insoot forming on the TC-- which insulated the TC from sufficient heat.
Obviously the TC has to be clean (of soot) in order to receive enoughheat, to generate the needed voltage to tell the valve that it is safe to open.
And age does deteriorate the TC-- some last a few years, but thatis about the end of life for most.
Replacing requires getting down where the TC is, and with a screwdriver (usually)-- loosening the bracket that holds the TC. Payattention to where the wires are routed, and any polarity indicated on the oldwires, and duplicate on the new one. Duplicate routing, and polarity, andposition the new TC at the edge of the pilot flame.
Pilot flame is maintained by pushing some over ride button-- for aminute or two, until when you begin to release the button, you can feel thatthe voltage generated by the TC is now holding the pilot valve open, instead ofyour pressure on the 'start' button.

Any further Questions, let us know..

Mack B

Jan 20, 2011 | Desa International CBN30T Central Heating...

1 Answer

When I light the pilot and release the know the flame goes out


1. Try holding the knob longer
2. Locate & clean the sensor, a tube that's sticking into the pilot flame. Use a green scotch-brite or steel wool then wipe with a damp paper towel.

Dec 18, 2010 | Desa International Blower Glow Warm Wall...

1 Answer

I have a 1965 gaffers & sattler wall oven with the oven on the top and the broiler on the bottom. It began having issues lighting even though the pilot light was on. Now the burner doesn't light up at...


My Mom has a 1965 Gaffler & Stattler Mark 21 wall mount oven, it had the "Same Problem", People may tell you that the flame switch is no longer avalible but I found a universal fit flame switch at Applance Parts Center, I took the old part in and had it matched up, with a minor modification to the thermal sensor mounting bracket, "drilling a larger hole and lightly crimping it", it's a perfect fit, "problem solved". You may want to try cleaning the pilot light area with a small wire brush first, if that dosn't work try a jumper wire on the two terminals of the flame switch, if that works then replace the flame switch.
This operation can be done without removing the oven from the wall mount, just remove the two screws from the panel at the inside rear of the broiler, you will find the flame switch behind the panel it has two screws two wires a thermo leed and a sensor tip that goes up to the thermo sensor mounting bracket above the pilot light, the thermo sensor mounting bracket has one screw and a nut behind it, you will also need to remove one end of the 1/4" pilot gas pipe in order to remove the thermo sensor mounting bracket, When your done puting it back togather, check for gas leaks using soapy water in a spray bottle, a dish soap solution works great, also check your vent pipe connections.
After I cleaned the dust and grease out of this old thing, the 45 year old clock and timer started working again.
My Mom is very happy, try and find new oven to fit the cutout and vent, we saved a lot of $$$,
"Good Luck".

Nov 18, 2010 | Ovens

1 Answer

Williams debonair wall heater + pilot light problems


THE flame from the pilot should shoot past the thermo-couple and heat this up and make a small amount of mili- amps to prove the pilot light is lit. ..So if the flame doesn,t go past the thermo-couple it won, make mili-amps or its tme to change out the thermo-couple, They only cost lest than $8:00 and you can change it!

Dec 22, 2009 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

I have a mod gwp10 glow warm heater and the pilot light will light but when i turn it to the high pos the pilot light goes out every time unless you blow on the thermocoupler. " at least thats what seems...


You have dust in the pilot safety. The system detects low oxygen in the area and weakens the flame on the pilot. Dust imitates the low oxygen. Blow out the ODS or flush it with a tiny drop of rustbuster.

ODS Demo

Nov 28, 2009 | Desa International GWP20T GLOWARM Wall...

1 Answer

Natural Gas wall heater


It sounds like the thermocoupler is either not adjusted into the flame properly, or you may have gotten a bad one. The thermocouple is the main thing that makes the pilot work.

Dec 22, 2008 | Dyna-Glo D-E36 Infra-Red Wall Mounted...

2 Answers

Pilot light won't stay lit


Look for dust and lint. Look for them in places where gas should be freely flowing. I had a similar problem with an Empire Corcho wall-mounted propane ceramic catalyst heater. First it was the pilot light, then the #2 ceramic mantle. After horsing around with the gas lines and pressure regulators and trying to re-aim the pilot, it all turned out to be dust and lint in the gas passages. A little dust bunny in the brass pilot tube gave me a pilot light the shape and color of a banana. One puff of compressed air, and I got back my razor-sharp pilot. And some dust in the chimney of the #2 burner kept it burning blue/yellow and blistering paint off the upper surfaces of the heater. A bit of cleaning with a shop-vac put that right. "Passive" heaters are very much prone to this sort of problem because they rely on convection currents (i.e. LOW velocity) to get the job done. Convection currents are notorious dust collectors, as in COBWEB CITY.

Aug 23, 2008 | Heating & Cooling

2 Answers

Glow worm combi boiler


check the pilot line for an obstruction. check the millivolt generator that's supposed to keep the pilot valve open. check for a high limit control being bad.

Dec 14, 2007 | Desa International GWP20T GLOWARM Wall...

Not finding what you are looking for?
Desa International CBN20T Heater Logo

Related Topics:

68 people viewed this question

Ask a Question

Usually answered in minutes!

Top Desa International Heating & Cooling Experts

Paul Carew

Level 3 Expert

2550 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

mcijoe

Level 1 Expert

3 Answers

Are you a Desa International Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...