Question about Heating & Cooling

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When we turn the heater on you hear something turn on but sometime it doesn't blow any air out. If we turn it off and on a few time we can usally get it to work. When tries to turn on again when it reaches below the set temp. its sometimes does work and sometimes not. Do you know whats going out possibly?

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  • wildcat1828 Nov 17, 2009

    Its the central unit that sits on top of the house. It runs off gas for the heater part and electricity for the a/c part

  • wildcat1828 Nov 17, 2009

    The heating the ac part works fine

  • wildcat1828 Nov 17, 2009

    do you need to know the brand will that help?

  • wildcat1828 Nov 17, 2009

    We are hoping my husband can fix it. When he gets home for lunch I will have him get of the roof and get the brand and modle number

  • wildcat1828 Nov 18, 2009

    it is a Amana model PGA30R0452A

  • wildcat1828 Nov 18, 2009

    The MFG is P1164604C



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Sounds like a relay clicking but not activating. You can test it with an ohmmeter to see if it is good or not. You can check power to the motor itself with a voltmeter if you'd like to see if the power is getting cut off at the power supply.

Posted on Nov 18, 2009

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What kind of heater is this? A gas furnace, portable plug in space heater, gas fireplace, etc...

Posted on Nov 17, 2009

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  • Brandon Undeberg Nov 17, 2009

    I'm assuming that this is probably a space heater with a thermostat control on it. My guess would be that the thermostat wires are loose or have a bad connection in them. The noise you hear is probably the heating elements turning on, it should then automatically turn on the fan when those get power. There is probably just a loose connection. I would check those first, sometimes the soldered connections get loose. Let me know what kind of heater it is though and I can try to get a better answer for you.

  • Brandon Undeberg Nov 17, 2009

    Is this question about the heating portion of it or the a/c portion of the unit?

  • Brandon Undeberg Nov 17, 2009

    OK, with a gas furnace of any sort there's usually a pilot light, when your thermostat gives the signal to the furnace that heat is needed it will open a valve that allows gas to flow to the element. This usually flares up and heats for a bit before the fan kicks on. There will be an internal thermostat of some sort that will tell the fan that it's time to turn on. If your fan kicks in sometimes I would think that there is some sort of problem with the communication between the fan and thermostat. Are you going to fix it yourself or hire someone?

  • Brandon Undeberg Nov 17, 2009

    yes with a brand I can possible find a wiring diagram

  • Brandon Undeberg Nov 18, 2009

    Follow the wires back from the fan to the relay, or internal thermostat. It will usually be a small box, usually black. This is not a super expensive part. Just make sure if you have to cut any wires, that you use good ends to splice it back in. I would recommend soldering it back together with a solid solder wire and flux, no flux core solder. This is corrosive and will eventually cause a big problem. Any heating place will be able to order your new relay. I couldn't find a wiring diagram for it. Sometimes on the back of the inspection cover they will have a permanent wiring diagram.



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I replaced a carrier standard programmabe therostat model number TSTATCCSAC01, there are five wires from the wall that lead to the thermostat, the thermostat wire receptacle is labaled: Y C R G W O.

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If you can open the acess cover on the heater and look at the transformer( it usally has a slight hum to it). Look at the color wire. Also if unsure, that cover you just removed, turn it around, it will have feild wiring or low voltage wiring makings on it. That is the t'stat wiring. Just match them up with the t'stat. The R/RC is the hot from the transformer( usally red in color) . The C is the common from the transformer(usally black in color).Note, this was used most of the time for t'stat power. may not be needed for new tstat if it's battery powered. The W is used to turn the firing on( what ever your flavor is) (Usally white in color). The G is the indoor fan (usally green, sometimes brown in color). The Y is used to turn the outdoor condensing unit on(cooling) (This wire is usally blue or orange, sometimes yellow). The "O" is usally used for a changeover valve usally only on heat pumps. Most of the time on t'stats you willl have O/W markings, but the way you listed it, you have a seperate connection for it, odd.
SO, before you start, turn power off to indoor and outdoor units. Indoor unit, most of the time, will have a light switch mounted on the side of unit or above. Some places call for the switch to be mounted at the enterance of the area where the heater is. The sould be marked with a red switch cover. If unsure, follow the wire (romex, or metal sheilded) powering the heater. Then go outside by the condenser, you should see a box mounted adjacent to the unit,open it up and pull the disconnect out.
Take your time and look at the wiring detail on the heater, and match the wires. THIS DESCRIPTION IS NOT FOR A HEAT PUMP SYSTEM. This is only for a conventional system. One heat, one cool.
After you've connected all the wires, Turn t'stat to off. power up all units.
Turn to t'stats fan to on. You should hear the fan go on.
set fan to auto, and set t'stat to heat and set it to higher temp that room temp. Listen for ignition,
listen for fan. Fan may take a few mins to turn on due to heat exchanger comming up to temp.
As long as it's not below freezing ouside. switch to cool, then set t'stat below indoor temp. see if outdoor unit and indoor fan turns on. You will not harm compressor doing this for a short time.
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