Question about Ruud UBHC Air Conditioner

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Air dont turn on

My air doesnt work when its on auto cool only on the fan and the little digtal box for the temperature needs to be program i dont know how to do that what should i do?

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Need more info. Is this a heat pump? Did someone try to change
tstat. Recomend non-programable tstat. The pro-line honeywell
series w/large display is what I use.

Posted on Mar 23, 2008

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My 2000 hyundai elantra is overheating..when i turn the ac on only one fan comes on the other doesnt


COOLING FANS NOT RUNNING

It is normal for the A/C air to warm up a little when stopped. Less airflow thru the condensor. It is normal for the engine temperature gage to rise up to about the 80% mark on its scale before the cooling fan kicks on. The gage will also show about the same reading on the first start of the day, until the thermostat opens.

If the fan(s) are not working properly the A/C air and engine temperature will rise. If you have a belt driven clutch fan, the clutch may be worn out. All cooling fans kinda sound like miniature jet engines when its hot out, more so when the A/C is on. Replacing the clutch is all you can do for a belt driven fan. Electric fans are more complicated....
Check all main power electrical connections first.... Electric Fan(s) not working, Checking the fan(s), relay, fuse and engine temperature sensor's.
Verify that the fans work by unplugging them and run jumper wires to the fan(s) from the battery. If they run, your problem lies elsewhere. If either does not run, it's the motor.
Next thing to check is for power at the fan connectors. You have to be cautious doing this because the engine needs to be running and warm if not almost hot, and the A/C also needs to be on. (Both must be on and running for the duration of this checklist.) The A/C fan is on the passenger side and should come on almost the instant the A/C is turned on. It is also the secondary engine cooling fan and should cycle on and off in relation to engine temperature. Use a test light to probe the two wires on each fan. If you find power the fan motor(s) is/are probably bad. If there is no power to fans, roll up your sleeves!

The temperature switch is usually located above the oil filter. If the dash gage is working, its probably OK. Next is the Fan Control Temperature Sensor, located IN or CLOSE to the thermostat housing. You will find out if it is working later is this checklist. I just wanted you to know where it is. Next is the relays and fuse's. Usually located in the engine compartment on the passenger side power distribution box. You will need to remove anything over the cover to open it. If the fuses are OK, tap on the relays or pull them out and push back in. If the fans are still not running, pull a relay and probe the socket terminals for power. Two or three of the terminals should have power, usually criss-cross from each other. Two are hot battery power, and the third is the "signal" voltage which triggers the relay to send 12V battery power to the fan. This signal voltage comes from the sensor at the thermostat. If only two terminal's have power, then I would replace the thermostat sensor if not both sensors.

Hope this is clear as mud! and helps! Please let me know what you find.

Aug 27, 2011 | 2000 Hyundai Elantra

1 Answer

Where can I get a manual for my Emerson Quiet Cool Room Air Conditioner? Not sure the model, but these #s were on outside of box: 10DC93 784040B OE21M N14421, is on a little sticker on the right...


Let see if I can help. The numbers don't come up so we'll just try your information.

Exhaust - should be closed when using for Air Conditioning
Energy savings turns the fan off with the compressor when set for Air Conditioning
Fan Only means just that (no Air Conditioning)

Fan speeds Quite same as low, Norm same as medium, Super same as High
Temp settings, what the thermostat senses before cycling compressor.

Jul 04, 2011 | Emerson Quiet Kool 10GV13 Air Conditioner

2 Answers

I have a 2004 Pontiac Sunfire. When the car is in idle the air blows out hot and the Temperature gage rises and the car over heats. When the car is moving the air blows out ice cold and the temperature...


Sounds like your cooling fans on the radiator are not working. The fans are activated by a thermol switch on the engine or radiator reading the coolant temperature and an A/C switch. When the coolant is too hot the fans should activate cooling the system down. And, when the A/C is on the fans should also activate in order to cool the condensate so the A/C would work.

When you are driving, the movement of the vehicle throught he air is providing enough air flow to keep things cool and functional.

I would check the radiator fan fuse or fuses first. If those are OK I would try to run the fans with 12 volts and a ground that I supply just to see if the fan motor(s) actually run when powered. If the fan don't run when powered then the fans are bad and will need to be replaced. If the fans do run when you power them manually, then something is not allowing the power to activate, like a relay, control unit, or wiring.

It will take a little diagnostics, but it is not too difficult to chase it down.

May 03, 2011 | Pontiac Sunfire Cars & Trucks

3 Answers

How do I Turn the heat on ?


It's hard to answer that question because there are so many variables. First I would look at the thermostat and see what manual settings are available. If it's a non programable there should be a switch that goes from heat to cool,one position for fan on , one for off, and one for auto. Set the heat/cool switch to heat. the fan on ,off and auto to auto. Then turn thermostat control up so it's above surrounding temperature.This should cause the heater to come on. If that doesn't work you may have problems with heater or thermostat. If it a programable t-stat I will need more information,such as name brand,model,etc. Hope this helps. Thanks.

Nov 05, 2010 | Heating & Cooling

2 Answers

My fans keep turning after i turn my car off


the coolings fans are designed to run for a little while to dispense heat they dont do it all the time turn usually during higher hot days w/ac on or higher hot days goes off automatically

Jun 10, 2010 | 2001 Chevrolet Impala

1 Answer

What is the procedure to use air conditioner?


CLOSE WINDOWS   SET STAT TO 75   FAN IN AUTO    HEAT COOL SWITCH TO COOL  WAIT FOR DELAY IF YOU HAVE DIGTAL TSTAT. DO NOT SHORT CYCLE . SET IT AND GO.

Apr 20, 2010 | Heating & Cooling

1 Answer

I have an evaportating cooler omega it only works on fan.


I would have the unit looked at. The auto section on the motor is turned on by the cooler automatically so there seems to be a problem there at that switch.

Good Luck on your repairs hope this helped some

Dave

Nov 09, 2009 | Heating & Cooling

2 Answers

What do the controls on a portabel AC mean. Like the mode button.


my 4m40mitsubishi model have something nocking during a litlle accelerating in the acelerator

Oct 07, 2009 | Heating & Cooling

1 Answer

Our thermostat is set at hold with the fan on auto. The house and cool temp is set at 75 degrees, yet the fan will stay on CONTINUOUSLY unless I manually take down the temperature OR the outside temp falls...


it is ok to run your fan continously. constant air filtering as long as it pauses before a/c cycles on. will not use any more electricity than a toaster. is there a fan programing feature on t-stat. if so you will need to turn programing to fan off

Jul 30, 2009 | Amana Heating & Cooling

1 Answer

Soleus KFGHP-09-ID Mini Split


This is normal operation for these styles of minisplits. The thermostat is not in the remote but is located on the return air of the indoor coil, so the air needs to be flowing in order for the thermostat to measure the rooms temperature. Set your fan speed to auto and the fan will slow down when setpoint tempurature is met.

Phil Hodges,
Tech support Soleusair

May 18, 2008 | Soleus KFS18GW 18,000 BTU Heat & Cool 230V...

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