Question about Cozy (W352E) Heater

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I have a Cozy wall furnace and my tenant says that when he turns on the heater a burst of flames shoots out from the unit. It only happens when he turns it on. Is there gas build up in the heater unit? What could be causing this burst of flames?

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Make sure there is NOT an oval to round adapter on top of unit, need 2 feet of oval before you go to round pipe.

Posted on Mar 09, 2015

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Flue blockage, improper gas pressure or dirty burner

Posted on Jan 03, 2011

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Related Questions:

1 Answer

How to adjust the burner flame , it is blue and it is going down , its a cozy single wall furnace


gas pressure should be 3.5 on natural gas and 10 on propane, also make sure burner is clean.

Feb 26, 2015 | Cozy Heating & Cooling

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 Heating & Cooling

1 Answer

Cozy wall heater


Check flue pipe,old flue pipe may have soot,also check vent flashing may be restricted

Jun 25, 2014 | Cozy (W352E) Heater

1 Answer

Gas explosions coming out of Cozy wall heater


It could be one of two things. Either you have a weak gas valve or dirty burners. Either way you will need to get a technician out to check it in order to know for sure. Or if you have access to high air pressure you can try to clean your burners and see if that eleviates the problem. But you saod it has done it since new. I am leaning towards a weak/ or stuck diaphram in the gas valve.

Feb 16, 2009 | Cozy (W352E) Heater

1 Answer

My Cozy Heater sized and installed by professional will not heat


I'm assuming your heater is the little Cozy direct vent wall furnace, your room calculations are correct, and at 57 degrees your main burner is constantly on. If so, it sounds as if you have too low a flame which can be caused by a main burner jet with an undersized orifice (like a propane one that got in the wrong assembly line) or obstructed by dirt, inadequate gas pressure, or a main gas valve that is not fully opening.

Open the pilot light inspection door and look at the main burner flame height. If it is less than 2 inches or so, check out the three possibilities above. If the flame is very yellow and wandering around lazily, check the air intake on your vent cap for obstruction.

Jan 31, 2009 | Cozy (W352E) Heater

1 Answer

Flame going out!


Take the flame sensor out and clean with fine sand paper or emory cloth

Dec 09, 2008 | Cozy (W352E) Heater

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