Question about Frigidaire FAC124 wall/Window Air Conditioner

3 Answers

My Frigidaire AC/heater window unit problem is no heat. Fan works

I removed heater checked power on heat mode connections to heater which was around 320 ac. Seems too high. Is that the problem if not how can I check heater while off unit. thanks

Posted by on

  • 3 more comments 
  • srcr1983 Dec 08, 2008

    I need to ask more questions for my problem. I did not recieve sufficient help for premium help tech. thanks.

  • srcr1983 Dec 08, 2008

    Thanks. The frigidaire model # is FAZ08HR1A. The heater has 2 swithches attached on top. The element has about 11 ohms. The 2 switches have 0 ohms. The main power is 110vac, the lines to the 2 switches has high VAC. Are those switches the thermal cut-off and the thermostatic switch you mentioned. Sorry for not furnishing model #. Thanks again.

  • srcr1983 Dec 08, 2008

    found connection to relay loose and black at connection. Heater works after connecting back up. thanks a lot. Good work

  • srcr1983 Dec 10, 2008

    Hello, I installed unit the heat isn't very hot. Its warm at best. What could cause heat to not be at its best? Could it be the heater itself? What can I check to diagnose? Thanks

  • srcr1983 Dec 10, 2008

    Thanis I'll try it.


3 Answers

There is probably something going on with the heating part of the unit, and so I would probably look at that part of the appliance if you know where to look. If you aren't sure where to repair it at, I would get a repairman to come and look at your air conditioner. It can be very difficult to fix an appliance such as this if you aren't sure what to look for!

Posted on Oct 27, 2014

First of all, do you get cool air when it's switched to cool? We want to make sure that the freon in the lines is still good and that you don't have a broken line somewhere. If you don't have heat, it could be a number of things. My guess would be that you have a blown fuse, or a broken circuit along the way. I would put up a voltmeter to some of the inner parts of the board and check it that way.

Posted on Oct 03, 2014

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

Initially, pls check the continuity of the heater element itself. Additionally, almost always, heaters have a thermal cut-off in series with the supply line. This is different but in addition to the thermostatic switch that regulates the switching off temperature. Both the thermal cut-off and the thermostatic switch could also be checked with a continuity tester. Normally, both should read 0 ohms. Of course all continuity/resistance readings should be performed with the unit unplug.

The "320 ac" reading is unrealistic, perhaps you can try reading from the mains/outlet and compare.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 08, 2008

  • 2 more comments 
  • Louie  Role
    Louie Role Dec 08, 2008

    Appreciate the postback/comment. Perhaps if you could post the specific model number, then a more detailed approach could be forwarded.


  • Louie  Role
    Louie Role Dec 08, 2008

    Your posted readings indicate that those components are good. Incidentally, the two switches are termed Temperature Limiter and Thermal Link. Both serve the same purpose, go off if the heater exceeds a pre-set temperature.

    On both the Temperature Limiter and Thermal Link, one of their terminals/ends goes to a relay that is activated by the controller board. If the heater is not heating up, it is either the relay is defective or the controller board is not switching the relay ON. Another possibility would be loose wires/pins on the connector(s).

    Incidentally, I understand that there is a TEST/RESET button on the plug itself. Of course it would help to double check that the breakers are good and set.

    To further assist you in the diagnosis, the wiring diagram, installation instructions and the owner's guide all may be found here. Of particular interest would be the wiring diagram which you can reference tracing the supply line.

  • Louie  Role
    Louie Role Dec 08, 2008

    Glad to be of assistance and appreciate the rating too.

  • Louie  Role
    Louie Role Dec 10, 2008

    Hi again,

    Appreciate the update.

    If you can measure 110VAC after the relay and likewise on the terminals of the heater, then yes the heater is not drawing enough current to produce sufficient heat. If on the other hand, the mains will read 100 but wold be less after the relay of on the heater's terminals, then something in between is dropping the voltage. One possibility is the internal contact pins of the relay.


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Unit not working correctly. The unit worked for the winter, few days ago I turn on the AC and noticed that it wasn't cooling like it should.

It's could be the board or a heat relay. See if you have 24 volts on "x2" im assuming, emergency heat when in cool mode if so it's the board. Or unhook black or x2 or your emergency heat from board and run unit in cool. If heat stays on its a relay

Jun 02, 2016 | Air Conditioners

1 Answer


Sounds like a problem with the furances circuit board. With the furance powered off, disconnect the two wires at the circuit boards thermostat terminal strip. These are probably red and white wires connected to the "Y" and "C" thermostat terminal strip on the circuit board. These two wires send 24 volts to the outside A.C. condenser unit when the thermstat is se tinto the cooling mode. With the thermostst in the "off: postion measure across the "Y" & "C" terminals at the furances thermostat terminal strip. If you have voltaged than either the board or thermostst has failed. The next step to determine which has failed is this. Disconnect all the thermostat wires at the furance. To check the heating circuit jumper across the "R" & "W" terminals, the furance should fire off for the heating circuit and run non stop beacause the thermostat is no longer controlling it and is isolated from the furance. Now remove the jumper and jumper across the "R" &"Y" terminals, the blower should run at your furance for the cooling mode and you should have 24 volts across the "Y" & "C" terminals for the outside A.C. condenser compresor contactor.Next check for blower operation by jumpering across the "R" & "G" terminals. If everything checks outs than the thermostst is the problem. Tou may also want to check the control wiring at the thermostts , furance & out side condenser unit. If the wiring has connnected somewhwre between these points or at the terminal connection this may also be bring on the A.C. when the thermostat is in the "off position.

Feb 13, 2011 | Hitachi Air Conditioners

1 Answer

AC/ Heater unit does not turn on at all. Power is connected and working. It is very old and not serviced in some time. Worked fine yesterday though. Any thoughts>?

Due to high vibrations in unit, Connections can come loose Resulting in occasionally not working, If you can remove the cover with power disconnected of cause and with a insulated screwdriver/ Pliers check & push all connections For firm & tight connection.

Jan 25, 2011 | Carrier XQB153D Air Conditioner

1 Answer

I had a new American Standard 1.5 ton electric AC/Heater put in this past July. This is the first really cold days we have had in Texas and I have noticed it is blowing cold air when in heat mode. I have...

To get proper heat, keep your temp setting at 30+ degreeand also mode in "heat "position. If still no heat, check your heating sensorfor closed circuit by an OHMs metre.It it's with RV, check power to RV.Ifit's with heating element check power to element. If power is there but stillno heat means element defective. Replace new heating element. Thanks.

Jan 13, 2011 | Air Conditioners

1 Answer

How can i use my carrier AC model GenX2 as heater in this cold conditions

If your a/c is heat & cool model you can get heat. Otherwise cool only.

Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks.

Jan 05, 2011 | Carrier Air Conditioners

1 Answer

I have carrier 038ckc036 ac/heater. heat wont come on. thermostat appears to b working. circ brkr ok, what could b problem?

Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks.

Jan 02, 2011 | Air Conditioners

1 Answer

Lg window-type ac

Most little window units are mainly for 300-500 Square foot rooms.
Should be putting around 80-105 degrees top out of those little units, Make sure that your thermostat is set for heat rather then the normal setting of cooling (Turn more towards Heat) also if you have a fan setting you may want to try lowering the fan to low speed vs high fan, which should give you more heat.
Make sure the Filter is clean as well as the coils behind the filter or it will shut down the heaters quicker due to lack of air, shutting down your T-stat and bi-metals quicker.

Good luck!

Nov 11, 2009 | Air Conditioners

2 Answers

Fan will come on for heat(auto), but not for AC or set to ON

You have a blower relay in the furnace that's probably bad. In the heat mode the blower is on a temperature relay, in cooling mode the blower has to come on immediately so there is another relay for cooling. The green wire on the thermostat feeds that relay, so if you go to the furnace and shut the power off and find the green wire from the thermostat that feeds that relay and replace it, being careful to mark all the wires before removing them, also the relay terminals have numbers for identification.

Apr 07, 2009 | Air Conditioners

1 Answer

Coleman outdoor furnace/AC blower speed too fast

You are right slow for heat and fast for A/C. Here are the blower speeds black is high blue is med. and red is low if you have orange it would be med low. Look on the control board and see what color wire is connected to heat and let me know if you have something other then control board. You can take the wire that is on park and swap them around. ken

Jan 11, 2009 | Air Conditioners

1 Answer

Dometic ac/heat pump

Would suggest it is drawing excessive current, make sure both fans are going, (inside will cycle low/high), or possible faulty reversing valve solenoid, or could be as simple as loose wire connection, how long does it run for and is it on the same 20amp breaker as the rear?if so start by running only the front unit in cooling 15/20min, check fans running, no unusual bearing noises, switch off for 60 sec then back on heat mode, if unit runs without stopping rewire onto separate circuit, if inside fan not working on heat check bi-metal switch in the airway, if running for a while, fans going but not very warm, check reversing valve.
Note, electrical's should be tested by someone who are qualified in the field.

Nov 05, 2008 | Dometic Rooftop RV Air Conditioner

Not finding what you are looking for?
Frigidaire FAC124 wall/Window Air Conditioner Logo

Related Topics:

1,324 people viewed this question

Ask a Question

Usually answered in minutes!

Top Frigidaire Air Conditioners Experts


Level 3 Expert

4342 Answers

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Bill Long

Level 3 Expert

577 Answers

Are you a Frigidaire Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides