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Does the igniter glow? Is the LED in the blower section flashing and if yes then how many flashes?

Most likely the igniter has gone bad or gas is not touching the igniter. Whatever you do DO NOT...

Both units are good; it just depends on how they are installed and if you have a name brand preference. Are you replacing everything or just one piece? If so what piece? I sell and install both...

Most of the safeties are 24 volt on those furnaces with the exception of fan/limit controls. Those were either only high voltage or split with the limit being on the low voltage side and the fan...

If it didn't spin backwards before and no new motor has been put in, then the capacitor is bad and needs replaced.

Thanks to all three answers; I used Kilz original, as it was all I could find in my area on short notice and little money. I hope this resolves my problem so I can on to other things. I thank you...

Will an oil-based cover a latex ceiling paint? I have a customer that had some ceilings painted and there is now moisture damage showing through the paint. Will an oil-based sealant/primer (such as...

Plug the black into the hot side of the receptacle and the white into the neutral side. That sets the motor to high speed. To try low speed set the red wire instead of the black wire. Make certain...

Induced draft motors should run pretty darn warm, that is to say any motor is hot to the touch because they have nowhere for the heat to go while running. If it is so hot that it is smoking while or...

First check to ensure all safeties are good (no roll outs tripped), then check the induce draft motor. If it won't spin by hand with the power off then the motor is seized. If it spins with the...

If you want to fully utilize the new thermostat then you need new wire; elsewise, hook one to r and the other to w.

Check the safeties to see if you're losing power to the gas valve. Does the ignitor glow?

Check the wiring at the furnace, verify the wires are landed correctly: red to r, white to w, yellow to y, green to g and the outdoor unit lands on y and c. If they are landed as so then land the...

Check to make certain that the vent has a good slope back to the furnace at all locations. Then make sure that it has good drainage. Those are the two biggest culprits for that problem.

Thermohelp422... wiring is close to white-rodgers; the o/b is for reversing valve: o energizes in cooling and is the one you want on new thermostat. As for the common wire, it is how the 24 volts...

Are you running it as a heat pump or as a/c? If heat pump, then defrost sensor or board is faulty; if a/c, the outdoor temperature is too low and you will need a low ambient sensor to cut out the...

Some are configured to handle either and some have a pin or switch to set. Since millivolt units still exist they still need to make some stats, and by combining the two kinds they are money ahead.

If the exhaust is to penetrate the structure and vent outside then use the rigid pipe system; otherwise, venting in the attic area is usually suitable and the flex system works great.

Does the gas valve have three or four terminals? What are you going to put this on?

Is the furnace going off and on during that time? Or is is blowing cold air for a while then warm then cold again?

Does it sound like a race car outside? Most likely it is the compressor has been damaged and is now wearing down to the point of needing replaced. The only thing to quiet it down a little is a...

What kind of furnace is it? Is it an 80% or 90% efficient?

Most likely the motor will need to be replaced, have you verified the voltage to the fan? Also remember that the new motor will need a new capacitor; I recommend a 440v, not a 370v.

Is the pilot flame strong? Does it have a good size and sound? If the pilot is weak then it will draft off the thermocouple and lose connection. The best way to clean the orifice is with a small...

If your unit is still under warranty then first verify that fact, second contact a Ruud dealer. If they also want to charge you outrageously, then contact Ruud and talk with them. Explain your...

Got a project to restore/refinish a cavalier hope chest for my mother-in-law. I know I can't just strip it down. The chest is in good condition, just needs tlc. Any ideas? Thanks in advance.

When the key is in on position (not in acc) the clicking is coming from the passenger rear, from inside the plastic housing. Temp stat is setable but rear climate is non-responsive - only cold air. I...

I have a 2004 expedition and the rear climate control is clicking. The fan works well but cannot set temperature. Please help; thank you in advance.

common terminal relations: g - fan, w - gas valve, y - a/c compressor contactor, o - reversing valve, x2 - secondary/emergency heat, c - common/ 24v return (on most models it's c on some it's b),...

First thing to check is if the wire has been pinched of smashed anywhere.

First do you have an evaporator coil (a/c coil) on the furnace? Second, have you tried to bypass the thermostat? Does the furnace restart itself after a short while or go completely out? Is it an...

Do you have an evaporator coil on the furnace?

Do you have 24 volts? If so have you checked the gas valve for operation?

Is it a spark control? How are you cleaning it?

Unfortunately there is only 1 alternative but it requires a system built for r-22. The new systems (r-410a) are not compatible with r-22 coils due to the increased pressures,unless the indoor coil is...

What model number and are there any safeties that need to be figured in? Basic wiring is 120 volts to the furnace, once in the furnace the high volt goes to the blower and the transformer; low volt...

Check if control voltage is dropping out to the w terminal. There are two ways to check: 1 use a multi-meter (volt meter) or 2 use a jumper wire from red to white at furnace. If it still persists...

Probably a weak thermocouple