How do I troubleshoot to determine if the problem is the blower motor, wiring, capacitor, switch (thermostat), or whatever?
To eliminate the T-stat from the puzzle, just short the T-stat's two wires together. If it works then it's the T-stat. To check the motor and capacitor, remove the power. Find the common winding of the motor and place one lead of the meter on it (make sure the meter is set to ohms) RX1, place the other lead on the start winding (should be a high resistance), then move it from star to run winding (should be a lower resistance), then measure from start to run and they should add up to basically the same reading as common to run +start. Exception of the common- any Non reading between start and run is a open (broken) winding. Internal overloads are placed in the common winding and are thermal (open because of heat caused by a short), they will reset when they cool down. Also check each winding to ground (the metal housing of the motor), and this should be a very high reading indicating no circuit to ground. The capacitor can be checked by first shorting the terminals together, disconnect an attached wire and placing the leads on the terminals with the meter set at R X 10000 and the meter should rise (numbers) momentarily as the capacitor charges then decrease as it discharges = good capacitor
This unit has a 120 degree fan switch, on at 120 degree off at 105 degree, check for line voltage at fan switch if you have voltage by pass fan switch use jumper wire if fan comes on replace switch if not bad fan.
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.
SOURCE: Replaced mercury thermostat w/Honeywell CT87K - doesn't work!
You need a specific thermostat for a Wall Furnace it is a Millivolt Thermostat and not a 24v standard thermostat....usually it will work anyway however if the powerpile (generator produces millivolts from the pilot light) is weak it may not be producing enough...or the Pilot light may be dirty and lazy...won't produce enough millivolts ...or you can have bad or dirty contacts or connections....or a combination of any of the above.....a 24v Thermostat and particularly a non-mercury thermostat has too much resistance in it for a millivolt system....as your Wall Furnace (other than the fan) runs on less than 1 volt
SOURCE: Wires not connected to gas valve need wiring
I think you mean a milli-volt system. I went to the cozy heaters website and found the wiring diagram in an owners manual for a similar unit, a W355. I bet the wiring diagram will work for your.
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
SOURCE: Cozy Heater will not turn on from thermostat in the morning
no more than 20 feet of statr wire allowed and make sure the stat you have is for a millivolt system.
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Thanks, Brian, for the thorough and detailed troubleshooting advice. I've been too busy to give it a try, but I'm sure, with your tips, I will be able to isolate the problem. Thanks again. Jim
Thanks, Brian, for the thorough and detailed troubleshooting advice. I've been too busy to give it a try yet, but I'm sure that with your tips I will be able to isolate the problem. Thanks again. Jim
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