Question about Cozy (W352E) Heater

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I have a cozy wall furnace and I'm having trouble with pilot

The pilot wont stay on, I have always been able to light it in the past.

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Try changing the thermocouple may be worn out also check the flue heat limit switch

Best regards
Greg

Posted on Dec 15, 2009

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1 Answer

I have a Cozy W355D wall furnace. It's difficult to turn on. Replaced the thermostat, that helped some, but still have to turn it off, wait a few minutes, and turn it back on. Often still won't light.


So are you saying the pilot stays lit, but the main burner won't always fire. If this is a millivolt system you could have a weak pilot flame, not getting the pilot generator hot enough or you could have a weak pilot generator. If you are handy you can try cleaning the pilot. It may be better for a qualified service tech.

Jan 30, 2017 | Cozy Heating & Cooling

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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 Heating & Cooling

1 Answer

I have a cozy model cdv255 direct vent wall furnace and the pilot light keeps going out. What causes this


dirty fuel line.have see where spider web is enough blockage to cause this. but aslo have found that the thermocouple needed replaced.

Jan 08, 2015 | Cozy Heating & Cooling

2 Answers

My cozy floor furnace wont come on


NEED MORE INFORMATION. IS THERE A LED LIGHT THAT FLASHES A CODE?. IS THE THERMOSTAT OPERATING PROPERLY? IS THIS UNITS FLUE EXHAUST VENTED TO THE OUTSIDE? & IS IT FREE OF OBSTRUCTIONS?,

Dec 25, 2012 | Cozy Heating & Cooling

1 Answer

The pilot will not stay lit in our Cozy Direct Vent Wall Furnace CDV335B. Problem occurs with winds. Last heating season, replaced powerpile, thermostat, ignitor, gas valve, and pilot burner. Any...


There is a wind shield for this unit, call 502-589-5380 and ask for a drawing for the wind shield and have it made out of 26 gauge sheet metal.

Nov 27, 2010 | Cozy (W352E) Heater

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Cozy wall furnace model w255d pilot will not stay lit and thermopile has been replaced 750 millivolt system


Ensure the end of the thermopile is in direct flame, any lower or higher it will not allow the pilot to stay on..

Dec 04, 2008 | Heating & Cooling

1 Answer

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


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Nov 08, 2008 | Cozy (W352E) Heater

2 Answers

Cozy wall heater lights fine then goes out after 3 or 4 minutes


Make sure all the wire connections are good and tight. Next lift off the cover and look for a little thermal disc mounted up by top of the heat exchanger. Most have a re-set button but not all. If you have this ,by-pass it ,see if that solves the problem, if so it may be defective, or doing its job and you have a venting problem. If you don't have this and have changed the thermocouple (was it a copper tube with a fitting that screwed into the gas valve, or did it have 2 wires, that is a pilot generator, kind of same thing) make sure the probe is set correct, with the pilot flame heating the top 1/3rd of the probe. The only thing left is the gas valve.

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