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Ac unit fan does not turn unless i force it to turn. also not producing cold air

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If the fan just hums and if you spin the fan and it runs, check out the capacitor, it is bad. Most condensing units have a split capacitor, for the hermedic unit and the fan. If the compressor runs the dual capacitor is bad on the fan side. Your choice buy the dual capacitor, or just buy a single capacitor for the fan part of it. Make sure the voltage rating and microfarad ratings are the same. They will be marked on the old capacitor, as will fan (for fan), and herm for compressor). THATS 220 VOLTAGE YOUR WORKING WITH, BE SURE THE POWER IS OFF!!

Posted on Jun 23, 2009

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1 Answer

Our AC keeps cutting out. It runs for a few minutes then stops. have to switch off and restart. Any idea why? Have emptied water and cleaned filter recently


Look for:
  1. the ac needs air flow thru the indoor and outdoor radiators
  2. the outdoor radiator coil should get warm/hot and produce warm air.
  3. indoor radiator coil needs should get cold and produce cold air.
The ac needs the fan motor(s) working and compressor running and pumping. Compressor skinny copper line hot and thick line cold.

Jul 21, 2015 | DeLonghi Heating & Cooling

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Why can't I lower my honeywell 8500 below 67 on cool?


With a two story house you have to be aware that cold air flows downwards so any cold air coming from an ac unit will flow downstairs( normally down the stairway) so unless you can close off the down stairs then the up stairs unit will be cooling downstairs as well. Ac units have a thermostat located in the air intake and it cools until the cold air has risen to that point. In effect the space above the ac unit will be hotter than the floor. Knowing how they work ,you can see that the upstairs unit will never reach the set temperature because the cold air is continually heating from the house and will never get to the top thermostat.
So your solutions are
1-- fit controls that restrict the cold air from leaving the upper floor (Doors)
2--don't run the upper ac unit unless you are living up there (waste of money
)3 place an ac in each upper room and keep the room door closed

Aug 12, 2014 | Heating & Cooling

1 Answer

Car blows warm air when idling


It sounds like your AC unit could be overheating or even damaged.

AC units have a sensor that will turn them off automatically to prevent damage from overheating. If there is an insufficient amount of air flow, the unit will heat up, and then eventually turn off.

When the car is moving, more air is forced over the unit, likely keeping it cool enough to run, however, when the car come to a stop, it loses that air flow, and quickly heats up. Thus, the AC would work while the vehicle is in motion, and overheat and stop when the car is stopped and idling.

However, the AC unit could be completely blown. The cold air while moving could be just a case of air being forced into the car. Think of a house fan, the fast the wind blows on you, the cooler it gets.... Thus, it could be an illusion that the AC is working when car is in motion, when it really isn't.

Hope this helps.

Jun 09, 2012 | 2004 Lincoln LS

1 Answer

I have a shenbao mennelium aircon its gets cool after i turn the unit on but after 10-15 min it stops blowing cold air i have to shut the unit off and then back on to get cold air and also the compressor...


Check the fan,to make sure it is really turning fast on the high mode with ac on,not just fan.It sounds like the fan is slowing down,and not cooling the condenser,therefore cause the head pressure to rise,and producing warm air.The fan motor would have to be replaced to fix the problem if this is the case.

Apr 16, 2012 | Heating & Cooling

1 Answer

I have a trailer with a duo therm ac..the outside fan is coming on but nothing is blowing thru the registars


Not sure where your located, so check that unit didn't freeze up on you. Make sure evaporator and condenser coils/fins are clean and run on fan only to aid in thawing them out. Once you see condensation running off roof good, try using cool again and see what happens. When they freeze up, airflow gets restricted through unit. The outside fan and blower wheel for forced air inside are attached to same motor, so if fan is working, blower wheel should be turning as well unless it is broken, or allen key has come loose on clamp around center of blower wheel. Other possibility is that the blower wheel is turning but forced air ducts have blockage at inlet, which will require letting ceiling assembly down to inspect, or removing cover on roof and screws at front evaporator and opening it up. Make sure power is off during inspection.

Sep 12, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

The AC unit turns on and I can cycle through the options in order to adjust the fan speed however the fan does not start in any of the three settings. The ac unit produces cold air, however the fan does...


You say the unit produces cold air ??? where are you getting the cold air from???
If your fan does not run in any speed F1, F2 F3. and a funny smell sounds like the motor is bad
Mine works in F2, F3 but not in F1

Apr 12, 2011 | Kenmore 75085 Air Conditioner

1 Answer

Cooling Fans coming on shortly after starting cold vehicle Ford Winstar 2001


climate control units in most cars use the ac system to regulate temp in the cab. the ac system requires a fan to pull air over the condensor on the front of the car. its normal for a fan to come on. unless you have a bad engine temp sending unit thats causing the engine cooling fan to come on improperly. try turning off the heat and ac and see if it still comes on.

Feb 28, 2010 | 2001 Ford Windstar

1 Answer

Air condtioning unit


check capicitor on motor, fan motor bearings may be locking up when they get hot then when cooled the motor comes back on. Then you must replace fan motor.

Aug 11, 2009 | Heating & Cooling

3 Answers

My sc1 over heats when at idle and only if ac or heat is turned off as soon as i turn onn ac heat drops imediately


you may want to check on the radiator fan. The AC has its own fan and once AC is on, the fan would help bring down the temperature. It is either the fan is not blowing or has become weak. You can check on the fan by pulling out the temp sensor on the lower radiator hose. The fan should blow at full speed when doing this.

Check on the water reserve the water inside it goes down, if not there may be a leak somewhere. Water vapor may be escaping and lessening the effectiveness of the cooling system. This may be a reason why the engine cools down after the AC fan is on.

Jun 16, 2009 | 1995 Saturn Sc

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