Question about Cozy (W352E) Heater

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Have a cozy heater cdv335 pilot lights but won't turn on

When I turn on the thermostat it does not kick on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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hotuna
  • 288 Answers

SOURCE: Cozy dual sided wall heater

There isn't much to these things, its either the pilot generator or the gas valve. Or maybe both, try the first, then the second.

Posted on Dec 23, 2007

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hotuna
  • 288 Answers

SOURCE: 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.

Posted on Dec 25, 2007

shastalaker7
  • 1515 Answers

SOURCE: I have a W355F Cozy wall heater. I lit the pilot

I would take out the new stat and return it.Just because it was new doesn't mean it didn't have a factory defect. I see this all of the time buying a/c and Heater parts that I have to return for credit.
Good Luck, Shastalaker7
PS It sounds to me like you know whats up.Sincerely, Shastalaker7

Posted on Nov 06, 2009

shastalaker7
  • 1515 Answers

SOURCE: Cozy wall furnace burner will not light. Pilot

Hi, have done this to many times not to know. I will walk you through this. It is good that the pilot is lit. Go to the stat and remove cover. Don't worry as this is a milivolt unit, no voltage or such a small amount you wont even notice as this is why it is called milivolts.Take a small screw driver to remove the next section which is the thermostat and will expose the sub-base where you will find 2 wires connected to it. You may have 2 or 3 screws to take loose to get to this last section. Anyway, if you have a piece of insulated wire laying around, even old speaker wire will work, take it and touch the wire across the 2 terminals and hold. If the furnace comes on, the thermostat is faulty, and you will need to buy a new one. No power to shut down, and simple to change. Cost about $12.00 dollars. Try and get a heat only milivolt stat as they are much less expensive and will have less problems with them. Go to home DEPOT to get one, or O.C.S.H. will also carry them. Don't let the salesman talk you into buying a programable heat and cool stat, 24 volts as they will work, but cost more and you don't need it!! Look around even if you need to go to a wholesale Refrigeration, Air Conditioning, and Heating parts house. Tell them you need one for a unit in some apts you own, and you will pay cash as you want a cash account. They will only ask what job its for, and just tell them your name. This is not illegal and I wouldnt tell you this if it was!! You will still have to pay taxes but will get a wholesale price for it. I am sure it will fire up when you touch the 2 wires and prove stat is bad. For some reason it is not the stat, follow the 2 wires from the stat down to gas valve and jump the same 2 terminals there also. If it fires up, you will have a problem in the wires from the stat to heater and will need to be replaced. I don't think this is the case. But, on the chance it will not fire after you have done all of the steps I have had you do, then you have a faulty main gas valve(MGV) and will need to replace. This is all easy to repair.I am a 100% sure it will fire up when you jump the 2 wires together, and you will need the stat. Please let me know as I will be waiting for an update! Good Luck,
Shastalaker7
PS When you install the new stat, make sure it is Level.

Posted on Dec 18, 2009

shastalaker7
  • 1515 Answers

SOURCE: cozy wall heater does not turn on

Hi, I will walk you through to check the stat. Pull off the cover 1st. You will need a screwdriver, a small one. Could be slotted or phillips. Loosen all of the screws you can see until the t-stat comes off. You have 3 sections counting cover. You will now see the sub-base and wires. You should have only 2 wires to the stat. You will need a piece of scrap insulated wire, even a piece of old speaker wire twisted togeter at each end will work. No worry of shock. Just jump or touch across the 2 terminals and hold them on and if it fires up and comes on, the thermostat is the fault. More then likely that will be the problem. Any hardware store will have one. Get a heat milivolt only, even if the salesman trys to sale you a heat/cool 24 volt stat which will work, but will cause problems in the future. I am sure it is stat. If not, contact me and I will walk you through what else would cause this. If the pilot is on, there is no ignitor on this furnace, either a thermopile generator or a thermocouple, a high limit switch and the main gas valve. Keep me posted, it will only take you a few minutes to test the t-stat. Let me know.
Shastalaker7

Posted on Dec 18, 2009

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