Question about Dometic Rooftop RV Air Conditioner

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Fan running slow

Fan slow cool or slightly cold air compressor coming on i think the fan motor is going out

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The question is not clear bur the fact which you are saying is correct
so check the way you think
and making the quiestion still clear will be helpfull
thank you

Posted on May 27, 2009

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You sound like you have it

Posted on May 27, 2009

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I have no cold air in my refrigerator or Freezer. It defrosted everything.


Condenser Coils are Dirty
If the refrigerator is not cold enough the condenser coils may be dirty. The condenser is like a radiator and must stay clean in order to dissipate the heat which was removed from the inside of the refrigerator. As the coils get dirtier the refrigerator becomes less efficient, which makes it work harder to cool down. If the coils are dirty enough, the unit will never be cold enough and will not be able to cool the inside of the refrigerator to the proper temperature.
Evaporator Fan Motor
If the refrigerator is not cold enough, the evaporator fan motor might have failed. Every refrigerator has a set of coils called an evaporator. The refrigerator may have one or more evaporator fan motor(s) depending on the model and evaporator locations. The evaporator fan motor circulates the cold air from the coils thru the compartment. If there is only one evaporator it is in the freezer side. If the fan is not working, no cold air will get to the refrigerator compartment. The freezer may still get cold.
Condenser Fan Motor
If the refrigerator is not cold enough there might be something caught in the condenser fan motor blade, or the condenser fan motor might be defective. The condenser fan motor draws air over the condenser coils to cool them. The condenser fan motor is located underneath the refrigerator near the back. Pull the refrigerator out from the wall and remove the access panel to access it.
Start Relay
If the refrigerator is not cold enough, the start relay may be defective. The start relay is a small device mounted to the side of the compressor. It provides power to the run winding along with the start winding for a split second at start-up to help get the compressor started. If the start relay is defective the compressor may run intermittently or not at all and the refrigerator will not get cold enough. The start relay should be replaced if defective.
Temperature Control Thermostat
If the refrigerator does not get cold enough the temperature control thermostat might be defective. The thermostat allows power to flow through to the compressor, evaporator fan and condenser fan. If the cooling system fans and compressor are running, but the refrigerator or freezer is not cooling correctly check for an airflow or defrost system problem.
Start Capacitor
If the refrigerator isn't cold enough the compressor might be having difficulty starting. The start capacitor serves as a battery to give the compressor a little boost during start-up. If the start capacitor is burned out the compressor might not be able to start and run as often as it should. Test the start capacitor first with a capacitance meter, they don't fail often. If it's defective, replace it.
Thermistor
If the refrigerator is not cold enough the thermistor might be defective. The thermistor is a sensor which monitors the air temperature. It is connected to the control board. If the thermistor is defective the refrigerator does not cool or may cool continuously.
Temperature Control Board
If the refrigerator is not cold enough the temperature control board might be defective. The temperature control board provides the voltage to the fan motors and compressor. These boards are often misdiagnosed. Check all other components to be certain this is the cause of the problem.
Compressor
If the refrigerator is not cold enough, the compressor might be defective. The compressor is a motor which compresses the refrigerant and circulates the refrigerant through the evaporator and condenser coils. There are several other components which are more likely to be defective if the compressor doesn't work. If the compressor itself is defective a licensed professional will need to replace it.
Main Control Board
If the refrigerator is not cold enough the main control board might be defective. This is not common. Check the defrost system, cooling fans, and cooling controls first.

Jun 28, 2017 | Refrigerators

1 Answer

Why has my freezer stopped cooling ?


The freezer does not get cold the evaporator fan motor might have stopped working.
http://thesisreviewadvisor.com

Jan 08, 2015 | Refrigerators

3 Answers

The a/c on my 2010 Mercury Milan quits blowing after about 2 hours of driving. Any ideas?


Sounds to me like the A/C clutch is no good and out of adjustment.You should goto your nerrest junkyard and get a used assembly take the clutch off then you learn how it comes off and install it on yours the save the pump for later use if needed. The clutch should only have a .010 air gap after install between th inner elctro magnet and the clutch plate it's self.

Aug 04, 2012 | 2010 Mercury Milan

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

Room a/c works great for hours and then compressor just stops


the unit may be knocking off on defrost if the coil is getting v cold,

check for full airflow over the indoor unit/evaporator coil, check filters fan operation and coil condition. Likewise it may be overheating so check the same on the outdoor unit/condenser clean coil and fan operation.

Unlikely but the unit may be under performing and slightly short on refrigerant, not providing enough suction cooling to the compressor motor so the internal over temp klixon would cut it off for short periods, to cool the motor.

Jul 05, 2010 | Samsung AW1203B Air Conditioner

2 Answers

How do I find a burning smell coming from my refrigerator? The freezer part is not staying cold. The compressor is very hot. I think that is what I smell burning. The fan next to compressor is moving very...


The slow fan could be the problem. The compressor is over heated and not working properly. Let it stay off long enough to cool down and put a fan to try temporarily and be sure tha is the only issue. It may have cooked the compressor.
Eric

Apr 11, 2010 | Samsung RS2630SH Side by Side Refrigerator

1 Answer

Refrigerator area is not maintaining cold, freezer seems fine


The freezer is usually cooled by the compressor, the fridge is then cooled by an evaporator fan motor ($30). If this fan seizes or slows down then the fridge warms up (it sometimes starts squealing before this happens). It could be that your drain hose is clogged or frozen. Maybe the temperature adjuster go bumped.

If you think it is the evaporator fan motor:
Check to be sure you can get a replacement fan first, they last about 4 - 5 years. Can get from a parts supplier or electric motor company.
UNPLUG fridge. Located usually in top of freezer behind a vented cover plate. Remove cover, remove screws holding fan in, may have to cut wires. Replace with new motor, make sure the fan pushes air into the freezer area and doesn't spin backward drawing air from the freezer area.

Oct 31, 2009 | Kenmore Refrigerators

1 Answer

AC doesn't blow cold air, but refrigerant levels


The low side pressure seems ok the high side would help,Is your compressor cycling and is the air coming out even slightly cool?slight over charge cold effect cooling ability.I wish I could be more help. I will have to think about this one.maybe you could make sure your temp.door is actually in the commanded cold position.

Aug 25, 2009 | 2003 Pontiac Vibe

3 Answers

A/C not working, outside fan not turning without assistance


is fan spinning fast enough it has to have alot of velocity to cool condensor coils if you haft to push fan to get going its probably shot and get new motor the ac is a sealed system and hardly ever will leak freon!!!Best of Luck to You!!! :)

Jul 02, 2009 | Bryant 462AJC021BA Air Conditioner

1 Answer

Lennox air unit not blowing cold air


your fan motor outside is going bad, have a service company change it out for you.

the motor stopped working and that overheated the compressor shutting it down on thermal cutout, and it will only come on once it cools down

Jun 16, 2009 | Heating & Cooling

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