Question about Cozy (W352E) Heater

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My cozy counterflow wall furnace burner comes on, come up to heat, but the fan does not come on. I have replaced the fan switch, the limit switch and the speed switch. Could the problem be in the auxillary limit switch?

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By pass the wall thermostat twist the wires together if unit runs and fan comes on the stat is the problem.

Posted on Oct 22, 2010

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Related Questions:

1 Answer

How do I wire a induce fan motor


Induced fan motors on older units are wired through the high limit safety on the stack - in series. When the furnace calls for heat, the induced fan motor comes on and after a time the furnace will light.

Older units have a temp switch in the stack that rotates to bring on the burners and blower motor. . When there is a call for heat, the induced draft fan motor comes on and then the burners will light.

After the heat exchanger is warmed up the limit switch will bring the blower motor on. That's basically how it works - there are two circuits - one for the induced draft motor and the burners and the other for the blower and high limit.

New units have a plug on the board you just plug in.

A

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1 Answer

My older Cozy cf353c counterflow wall heater gas shuts off pilot after it has run a while. I replaced the bad fan switch thermostat[ fan would not run untill changed] but not the other lemit switch . Could...


first have the heat exchanger inspected for a hole or crack, if there is an oval to round adpt. on top of unit or an elbow in vent this can cause the heat exchanger to split open and also cause what you are talking about.

Jan 14, 2010 | Cozy (W352E) Heater

1 Answer

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


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

Best regards
Greg

Dec 11, 2009 | Cozy (W352E) Heater

2 Answers

My heater will kick on right away but after 3-5mins it stops producing heat then a few mins later it will start heating again. Why?


The furnace could be shutting off on High Limit ...means your furnace is running too hot...check your filter and make sure return air vents are clean and clear....also it can be the Heat anticipator in your thermostat...which controls how many times your furnace cycles...basically your furnace should come on and off 5-6 times/hr ....need more info on your type of furnace and type of thermostat

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1 Answer

Cozy wall heater working intemittently


Sounds like a limit switch is tripping.
This appliance is equipped with a manual reset blocked
flue switch designed to protect against a blocked flue condition,
which would cause combustion products to spill back into the
living quarters. NOTE: A partially blocked, inadequate, or
disconnected vent system may not activate the switch.
Discoloration of the grille is an indication of a bad vent. If this
occurs, the vent can be checked by a qualified serviceman using
a draft gauge. After 15 minutes the gauge should read between
-.02 up to -.04 inches w.c. Vent must be checked at the
beginning of each heating season.

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try national energy for a conversion kit they should be able to help or the will know some one who can

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1 Answer

Fan switch will not make (limit switch).


If the snap switch is not located close enough to the plenum, this can be problem. The other option would be to cover the switch area with a metal shield or liatherm paper (fire rtardant paper).

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