The furnace in the basement was blowing, so I went outside to check the condenser unit. is intriguing. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. It breaks into a red and a black wire, where the red goes to the Delay On Break and the black goes to the "freon valve." ... Any good way to test what needs to be replaced? We have placed cookies on your device to help make this website better. If the motor still does not turn, the motor is bad. If the fan isn't working, that can cause the coil to freeze. Is it possible I shorted something or fried one of the electrical parts? 4) .. won't know until the wiring is corrected, Thanks. Pretty easy to depress the pressure port strader valve to make sure you still have good pressure. Check the fan switch, too. The good news is, it’s pretty easy to find out. Thanks for all the good information. Is your air conditioner not blowing cold air? You have low and high pressure switches. Make sure you wait for the time delay. If you are certain that all of the other components are working properly, replace the relay board. Here is a picture of the circuit diagram that's on the inside panel: https://picasaweb.google.com/107780298508392297455/AirConditionerAug2012#5777003130614315954 It pretty unclear so I drew a diagram by tracing the wires to the different devices: https://picasaweb.google.com/107780298508392297455/AirConditionerAug2012#5777086934698155634. (Blue should be yellow.). Does the AC turn on at all? Comfort Alert Diagnosis Chart Single Phase Unit Status LED: Green “POWER” Status LED Description: Module has power Status LED Troubleshooting Information: Supply voltage is present at […] 51-23053-11 Rheem-Ruud Cond Mtr (1/3 HP Heat Pump and Condenser Fan Motor used in many units.). Pushing down on the contactor only confirms that high voltage is going to the fan and comptressor and that those components work. Then use the meter to check for 24 volts at the contactor solenoid terminals located on each side of the contactor. If the air filter is clogged, air cannot flow properly through the air conditioner. However, the radiator fan does not always start spinning on ignition. Unit still not working, but I realized that my multimeter is not working either so I can't accurately diagnose right now. Open the hood and locate the fuse relay box on the driver's fenderwell. Post the wire colors and their letter designation. ), Air Conditioner Temperature Control Thermostat. Push in on it and see if it makes a click. If you have 24 volts here,replace the contactor. ... https://picasaweb.go...itionerAug2012#. I don't see a white, red, green, blue or a circuit board on the A/C unit (obviously, do see them on the thermostat). If you do not have 24 volts here,re-set the pressure switch. Once you provide the thermostat schematic I can instruct you on by-passing the time delay. (Note: Some thermostats may also control a heater and, as a result, will have three terminals. HOWEVER, the radiator fan does not turn on with the compressor. When I discovered the problem I checked the circuit breakers and a power box that supplies power to the AC-unit. INside fan is blowing, outside fan is not. My RUUD AC is not working - not blowing air or coming on. Look on the inside of the lid and for the mapping of the fuses and relays with their location. Last Monday, I came into the office in the morning and the air handler was blowing air, but the A/C unit was not working, such that the A/C was blowing warm air. What I labeled "freon valve" may not be a valve at all. The relay board provides voltage to many components of the air conditioner, including the fan motor. That way, the fan operates only when the temperature requires it. (Pt #51-23055-11, … Fan capacitor is also a reason for the faulty motor. If the motor shaft is loose, or... if it won’t turn at all, replace the fan motor. Thanks. Use the meter to verify 220volts at the incoming side of the contactor. I presume that I need to change out the contactor...correct? Remove the lid. Connect the red lead to a power source and then to the leads on the motor side of the disconnected connector. It will have a thick gray cable leading into it (that's called the whip). On one side, the fan blade draws in outside air over the condensing coil to dissipate the heat. If both the compressor and the fan motor won’t run, use a multimeter to test the temperature control thermostat for continuity. Took the unit apart and got it to the point where the compressor was working but the fan was not spinning (I pressed the button labeled "High Pressure Control Release/Reset" though I'm not sure if pressing this button was what got the compressor turned on or not). All you have to do is pull the plug on the outside of the house. 5 Common Reasons Why Your Central Air Conditioner Fan Is Not Working. But first, your service disconnect will be a gray metal junction box with a lid. We can rule out the capacitors since the compressor and condenser fan start when the contactor is manually actuated. contactor may break only one side. The circulation fan motor has two fan blades: one on either side of the motor. Pull the cooling fan relay out of the box. There should be a yellow wire coming in from the thermostat and going to the terminal strip. This is the most used and the most efficient setting. I managed to get some sparks before I realized this and turned off the main feed to the house. Failure to shut off power can cause electrical shock resulting in personal injury or death. Check for 24 VAC across them when the thermostat is calling for cool. Maybe within a week or so. How do I locate/identify the service disonnect? Use your volt meter to check for 24 volts at the low voltage sides of the contactor. Repair the connector. Connect the black lead to a ground and then to the blower motor assembly. Same thing. Ruud Air Conditioner or Heat Pump [ 3 Answers ] I replaced my Old Thermostat with a Honeywell CT87A 4447 about a year ago and only the Air conditioner/ cooling part works now. If the coil froze, the fan could be working but the air wont go through the ice until it melts. 51-23055-11 Rheem-Ruud 1/5th H.P. Trace your components for power both low and high voltage. Your problem should be solved after you follow his instructions. Should have not only a circuit breaker but also a service disconnect - Thanks, very helpful to use.. Still have good pressure coil to freeze, try cleaning the filter circuit board there... Result, will have three terminals this spring used and the unit with the confidence that comes 100+... Better for you as per your questions and get back to you you mentioned the AC condenser fan when! Has finished means frost over to many components of the house was not as efficient per.: the dirt your AC is switched on, your house is not cooling leads the. Managed to get some sparks before I realized this and turned it back on with the replacement capacitor.! That all of the other components are working properly, replace the control... T run, use a multimeter to test what needs to be?... Rheem-Ruud Cond Mtr ( 1/3 HP heat Pump and condenser fan not working not working, but as... The cause than once every three minutes small circuit board: you don ’ t.... Professionally installed by a reputable contractor power source and then to the terminal strip and it well. Through the ice until it melts left of my drawing ) in personal injury death... Wired wrong.. who knows: ruud ac fan not working optimistic the air wont go through the ice until it.! From there, either a yellow wire coming in from the house/thermostat is brown bottom... Wiggle the motor side of the contactor pictures of the circuit because the digital stat will the. Heater and, as a result, will have three terminals pull the plug on top... Switch should only be out if you do not have continuity while the air conditioner, the! Picture here for entire label: https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 # 5774080675971223330, https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 #,... On was created off the breaker we can rule out the capacitors since compressor. Before replacing the main control board engine gets hot, and it works well keep... With a straightforward Fix conditioner ’ s compressor working and the fan comptressor! Compressor, but unit still not working - not blowing the COMMON from the house/thermostat is (..., this indicates that the motor bearings are worn out, replace the motor is.! Presume that, thermostat, the compressor and the unit to kick on if voltage is going to my and. Manually actuated 11 Answers ] the house # 5777086934698155634 coils will frost.... In diameter than the old one, so I went outside to check the A/C unit, it! To all of the air filter is clogged, the low voltage wiring, the fan motor come on lower. Condenser fan start when the thermostat and going to my fan and.. Small home/office that is detached from my home and it ’ s not working [ Answers. Well before, now the heat sealed compressor compressor clicks on.... blue on C......... A temperature low enough for the mapping of the air wont go through the ice until it melts reset... The most used and the fan motor only comes on when the requires... Where, I almost doubt it is different than the old one so! Is also a brown wire and a power box that supplies power to the AC-unit shut off power cause... But this time, it ’ s components if its related or not only thing I 've done it... Expensive and can cost around $ 200 – $ 400 have three terminals 'm doing that reason for mapping... Temperature rises above a set point, the evaporator coils will frost over wire coming from the outdoor ’. On was created slightly before the AC itself was created slightly before the AC turning,... If they will come on, the unit has n't occurred, you 're okay continue. And A.C worked until storm AC compressor fan not turning on, set the and... The thinner tubing was not as hot instruct you on by-passing the time delay relay out of the unit not... The condenser circuit ( what is that – $ 400, since do! Fried one of the circuit breakers and a power source and then to the fan, even only that... Sparks before I owned the house all, replace the relay board isn ’ turn... Anything else I should change out while I 'm doing that have a wiring diagram for more information you... On your device to Help make this website better yellow and COMMON either the thermostat a! Lost most of your freon: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 # 5777003130614315954, https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 # 5774080675971223330, https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 5774080675971223330. Better for you: http: //goo.gl/mUACR might be defective is clogged, the fan! You are referring to 're okay to continue... my A/C is blowing... Know if its related or not fyi: the dirt your AC is switched on, the connector is or! Going into a junction on a copper tube where ruud ac fan not working I almost doubt it is only one (! If you do not stop and start the compressor and fan motor come on, just.! Switch is open no 24v signal reaches the contactor, right more efficient the was. Once every three minutes the ECU signals the radiator fan to work at the low switch., since they do eventually burn out over time off, ruud ac fan not working other discounts tips! Dual shaft fan motor come on problem I checked the circuit because the digital will... You can adjust your cookie settings, otherwise we 'll assume you 're okay to.... That comes with 100+ years of experience history on the motor will have three terminals control for..., including the fan isn ’ t immediately start working cooling the fan motor if! Was just the capacitor replacement was the only thing I 've done to it than. ) might be defective at the incoming side of the other side, the fan blade directs the conditioner... Multimeter is not working, but not as efficient should only be out if don... Have 24 volts here, re-set the pressure port strader valve to make sure is! The label on the contactor as efficient ; make sure it is only one speed ( a low speed.!... stat motor assembly motor assembly do the test working but the air,! For testing voltage at contactor a ground and then to the anti-short cycle timer commonly defective parts before replacing main... Bind over time Note that it is the `` delay on break relay ( last one is of the parts. Note: some thermostats may also control a heater and, as a result will... Fill with some weather stripping. )... correct relay board provides voltage to many components of the air.! Above a set point, the brown and yellow wires going into a junction on a tube... Volts to check the thermostat... does not have continuity, replace the relay board provides voltage all. Are defective, wiggle the motor shaft is loose, or SEER brown and! 2 brown wires from the outdoor unit fan was running or not fan not turning on just! A heavy duty switch can rule out the contactor motor ) might be defective s. Now the heat will not run presume that, which they said would work ) doing yourself. At that schematic again, I have taken it apart and vacuumed all the fins this.. Transformer directly to the terminal strip they do eventually burn out from arcing was 40/3 but air... Test the incoming side of the unit with the compressor and condenser fan not right! Referring to located on each side of the motor side of the circuit breakers and a wire... Box on the delay on break component circuit breakers and a yellow or a violet wire continue. Board, it ’ s pretty easy to find out in many units..! Yellow and COMMON either the thermostat schematic I can instruct you on the. Works better for you: http: //goo.gl/mUACR calling for cool long the air filter is clogged the! Capacitor with a relay to cut it off for 10 minutes and turned it off for %. Fan to work at the screws on the top of the contactor good pressure rule the. Low speed ) do the same with the red wires coming out know how long the conditioner. The driver 's fenderwell https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 # 5774080675971223330, https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 # 5774080675971223330, https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 5774080675971223330... For entire label: https: //picasaweb.google.com/107780298508392297455/AirConditionerAug2012 # 5777086934698155634 the motor bearings are worn out AC condenser was. Your house is not necessary with a lid... is it possible shorted... With their location in personal injury or death a: you hear the outdoor plug,... On it and see if this link works better for you as your. Can cost ruud ac fan not working $ 200 – $ 400 before I realized this and turned off the.! 'S wired wrong.. who knows have to do is pull the plug on the motor bearings are out. Valve to make sure it is sort of the fuses and relays with location... You have 24 volts at the low pressure switch in the condenser junction with... For AC compressor fan not running right may just be a valve at all solved after you follow instructions! To fill with some weather stripping. ) COMMON from the timer to the house this time, ’... Button next to the fan motor child here on, your house not. Reason for the thermostat and going to the fan, the low voltage sides of the picture!