Question about Ruud UAMB024 Air Conditioner

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The unit is not communicating between the Furance and the AC

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  • 456 Answers

Then it is not communicating with the thermostat. When you turn it to cooling and the fan comes on, then the thermostat is communicating
with the furnace.

If you have 24volts between Y and C then it is communicating with the AC Unit. If you go outside and remove the electrical panel(shut off power
to outdoor unit) you can still hear the contactor being pulled in.

If you cannot hear that you need a new two wire from furnace to outdoor unit

Posted on Jul 17, 2010

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Posted on Jan 02, 2017

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SOURCE: the coil in my byrant furance is freezeing up

It sounds like your evaporator coil is freezing. This happens when you do not have enough air flowing through the evaporator to keep the humidity in the air from freezing on the evaporator. Turn off the A/C to let the evaporator coil thaw. Check your air filter and make sure it is clean and not plugged up. Then (if you can) turn on the fan without the A/C coming on to hasten the thawing.

Posted on Jun 09, 2009

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1 Answer

I recently replaced my furance in my moblie home an now o have a Intertherm gas furance and i would like to have owners manual with it it did not come with one thank yoiu


Hi, most of the time, they tuck the manual in the heating section of the unit. Look around and you may find it. If you have then go with what Mike said to do.
Robert Horton

Nov 06, 2011 | Intertherm P3RA-048K Air Conditioner

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I recently came to home to find my furance (natural gas) running but it was blowing cold air. I pulled the filter, it was dirty, cleaned it and replaced it. I turned the furance back on and it worked...


You are resetting it every time you take the panel off the front of the unit. It is locking out the circuit board. No. 1 reason for this is a dirty sensor. The flame sensor is the small rod-like part that senses the flame of the burner. It is usually pretty close to the hot surface ignitor (the part that glows bright when the furnace is igniting) Watch your furnace burner light. You will see the ignitor come on. The sensor is a little bigger than a pencil lead and it will be just a couple inches away from the ignitor.

Take the sensor loose and clean it only with fine sand paper or emery cloth. Chances are this will solve your problem. Hope this helps

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HEATER TURNS ON AND RUNS THEN GOES OFF BECAUSE OF THE ROLL OUT LIMIT. tHE BURNER IS IS FLAMING OUT OFF THE BOX.


The furance needs to be clecned. Is the furance in the sdame roomas a clothes dryer. Lent can plug up the furances burrner tubes. With a shop vac switched to the blower side blow out the tubes and cleran the unit. Be careful not to touch the hot surface igitor while cleaning. These will crack easily.

Feb 13, 2011 | Goodman GMS90703BXA Heater

1 Answer

AC IS TURNING ON BY IT SELF AFTER I SWITICH IT OFF, HOW TO SOLVE THIS PROBLEM


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.

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My honeywell focus pro 5-1-1 wont shut off..its showing off on programmable thermostat but its still blowing cold air and i have it set to 90degrees...my problem indicator light on my unit is blinking 4...


Turn the power off at your furnace. Take the top front cover off at the furance. The high limit switch is right in the middle of the unit above the burrner tubes. Two low voltage (24 volts) wires are going into it. It is about 2.5-inches high and about an 1.5-inches wide. Remove the two wires and witn a hair pin hook them togeher at the connectors. Try your furance and see if it runs normally. If it does remove the jumper and replace the high limit switch. *IMPORTANT! never leave the jumper and remove imeditelly after truoble shooting. This is a safty device and keeps the furnace from catching on fire.ALSO IMPORTANT! do not let the jumper lay on or touch metal when trouble shooting. This will short out the 24 volt transformer.

Jan 26, 2011 | Heating & Cooling

1 Answer

Unless we set the thermostat very high, like 80 degrees, the heater will blow cold air. When the heat does blow, it will eventually stop blowing heat and the fan will continue to blow cold air.


Check and make sure the filter is clean. This sounds like a restriction in the system. If the unit has central cooling make sure ther indoor evaporator coil is clean at the furance.The unit may be cycling the burners on and off at the high heat limit , fan/limit control. You can also eliminate the thermostst from the furance. Turn power off at the furnace and disconnect the wiring from the thermostat. Jumper the red and white wire together. Turn the furnace back on. The furance should run in the heating mode. Try this and see if the problem is still there.

Jan 25, 2011 | Heating & Cooling

1 Answer

How to repair Samsung AQV 12 FAN Air Conditioner


You can turn off the Thermostat, and the powers switch on the furnance and turn the breaker off in the breaker box wait about 20 - 30 minutes and turn the breaker back on, and the power to the furance back on and the thermostat, this should reset the system.






Melvin
St Louis

Oct 03, 2009 | Samsung Heating & Cooling

2 Answers

The coil in my byrant furance is freezeing up , my ac has been running for hours and i noticed that the house was not cooling down. when i checked the furance i noticed ice on the outside of the coil above...


Low on refirgerant, or dirty coil, or it was run on a cold night. Either way, the only way to take care of it is to start by running the fan only, and shutting the cooling off. This will melt the ice on the coils. It is going to make a mess. Have the unit serviced if it is not dirty, if it is dirty clean it with an approved cleaner. Your local hvac repair shop should be able to recommend a good cleaner.

Jun 09, 2009 | Heating & Cooling

1 Answer

Blower fan wont shut off


Try cycling the switch at the furnace to reset the blower board. If this doesn't work remove the green wire from the blower board(computer board) to eliminate a shorted t-stat or shorted wire between the furance and t-stat. If blower remains on, then blower board is shorted. I've seen all these problems.

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