Having problems with your Air Conditioners ?

Dometic duo-therm I have a motorhome with 2 a/c and the ccc. One is working well but does not keep temp. To operate you have to manually turn off and on. The rear unit the fan comes on but the compressor doesn't. I pulled the cover but I don't know how to check the capacitors or other various items.

Answers :

The first unit sounds like the indoor and outdoor coils need a good cleaning especially if its an older unit. The second unit sounds like the compressor is bad. Can you do an ohms test on each of the leads to the compressor to see if it is bad? If you can then you will know. Otherwise, I would recommend having it serviced by a professional.

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Dometic duo-therm I have a motorhome with 2 a/c and the ccc. One is working well but does not keep temp. To operate you have to manually turn off and on. The rear unit the fan comes on but the compressor doesn't. I pulled the cover but I don't know how to check the capacitors or other various items.

The first unit sounds like the indoor and outdoor coils need a good cleaning especially if its an older unit. The second unit sounds like the compressor is bad. Can you do an ohms test on each of the leads to the compressor to see if it is bad? If ... Dometic Rooftop RV Air Conditioner

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Hello. Sounds like you do have power. That spring loaded plastic switch is a 24v contactor. It pulls in when energized. If you push it in manually everything shoud run normal. Ck your 24v transformer. On one side (feed) you should have 115v or 220v ... Air Conditioners

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After looking at the manual for the units, I believe that the system is having trouble with the number of units that you have linked. Here is a portion of the manual about multi system operation>Also link to manual:http://www.fri ... Friedrich MR36TQY3F Split System Air Conditioner

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... Goodman Air Conditioners

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It sounds like the compressor needs starting components installed on it. All a/c units have a run capacitor for the compressor and another one for the condenser fan motor. These motors use these capacitors all the time when the motor is running. H ... Air Conditioners

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... Whirlpool Air Conditioners

The interior unit comes on normally, but the exterior unit - compressor starts - fan does not. Fuses check OK - compressor stops in short time. Fan never starts, just a hum, and hot to touch. Could the fan be the problem, or starter relay??? Help please.

Make sure the fan turns freely. No obstructions or bad bearing. And check the capacitor ... Frigidaire Air Conditioners

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Hi,\015\012\015\012If you can safely check the supply to the motor when it should be on, then this is the best method to check it.\015\012\015\012Check the fan turns very freely - oil the bearings if it doesn't.\015\012 ... Goodman Air Conditioners

I have a Carrier 38CKC036 Air Conditioner Unit. When I turn the thermostat on cool the compressor comes on but the fan on th unit clicks like it wants to come on but it dont. Could the fan be bad? What do you think the problem is?

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Neither A/C compressor or fan coming on in ouside unit.

The bulge is a telltale sign of a defective capacitor along with the tripped breaker. Replace it and cross your fingers. ... Carrier 38CKC036 Air Conditioner


The two brown wires go to the fans capacitor. The capacitor should always be changed with the fan motor.\015\012\015\012It sounds like your unit has a dual capacitor. One side for the fan and the other for the compressor. All you will be ... Dometic Rooftop RV Air Conditioner

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... Air Conditioners

Compressor does not run. On turning the AC on, the compressor does not run. The blower fan does though. Checking the relay panel, the relay for the compressor does not engerize. a temporary solution is to put a switch across the contacts the compressor on and then the thermostate is set so that the AC should work, the fan comes on and the unit works as usual. The only exception is that the temperature must be controlled manually.

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Assuming that the 2 systems are isolated, that there isn't any cross over between the systems...It is normal for an air conditioner system, from window unit to central, to be able to circulate the air, even if not cooling. This is known ... Air Conditioners

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My air conditional unit outside ,fans turns on but the unit compressor wont turn on,just stopped working this morning.i turned the thermostat to 72 but only the fan on the outside unit comes on and it is hot inside the house..

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A/C worked fine last year. Turned it on for the first time this year and the outside unit does not come on. The inside unit fan works just fine. I checked the circut breaker and turned on and off. No change. I revoved the cover and do not see any burnt wires or any problem. Not sure what to do next. I have a meter... what should the voltage be where the power comes into the unit at L1 ect. please help... thx

Check and see if you have 24volts at the contactor outside.if you do you have a bad contactor. if you don't take the tstat off the wall and take a jumper wire and jump out R to Y on the t-stat if i ... Air Conditioners

The outside unit keeps tripping the breaker. It will run for a few seconds, loud rumble, then stops, and does this for about five minutes before tripping the breaker. I just bought the house. The unit is about 8 yrs old. I pulled off the cover and the inside near the compressor is full of dirt. We had a bad storm with lighting the night the unit started acting up. Should I replace the capacitor or is my compressor bad?

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My AC My Compressor keeps kicking off. I turn the unit on, the fan works. The Heat works but the compressor turns in about 60 sec. If I unplug the unit and turn it back on, it comes on but the compressor shuts off again after 60 sec. Can this be from dirt in the coils? They have some build up. Any other causes?

One might think so, YES the compressor is running till it gets hot and tripps on hi-temperature, and after it cools down awhile, the switch willcautomatically reset itself and back- & forth......Thank-you-very much! ... GE Zoneline AZ38H12DAD Split System Air Conditioner

1996 Coleman Model 7333C8876. Have 2 units on our Motor Home one day it was hot so I had both units running controlled by a Electronic Climate Control system. It got cool in the evening so I turned them off. The next day when i fired them both up on high the rear was fine. But the front will only cool on Low. The fan will not run on high and you can hear a slight noise coming from the unit. But the fan will not run on high.

Check to make sure the drain tube is clear. It sounds like the blower fan is dragging in water buil-up. ... Air Conditioners

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