Question about Dometic Rooftop RV Air Conditioner

4 Answers

Never gets cold

My air conditioner sounds like the compressor is trying to come on and when it does my power supply makes a humming noise then the compressor stops My dometic rooftop Airconditioner makes a buzzing noise when I first turn it on, and continues to buzz about every 2 minutes or so. The compressor will not come on.

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Hi,

Have you checked the starting capacitor?

Posted on Apr 18, 2008

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HI,

The best and the only solution is to get it repaired by a tech or get it replaced if it is still under warranty.

Goodluck..

Posted on Apr 18, 2008

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I think powersupply is not able to take the load of the ac get it serviced and compressor gas should refilled this will work the AC back .

Posted on Apr 18, 2008

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Not staying cool


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I have a lennox ac unit model M/n hs 29-029-2p S/n 5802g 11144 the fan just stop working and the motor was making a noise like it was humming plus no cold air was coming through our house we purchased it...


The fan stopped working and the compressor overheated due to this. Turn the disconnect (switch by outside unit off) and let cool.
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Try spinning the fan by hand. If it moves freely replace the capacitor, if not replace the motor.



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Whynter Portable Air Conditioner Model: ARC-14S. Problem: It sounded as if something fell inside the unit while it was operating (cooling) then it started to vibrate horribly. The vibration is only...


Hi,Whynter Portable Air Conditioner has many moving parts, and they all make noise and cause vibrations. Some of these parts are more likely to causing shaking and loud noises, and sometimes this signals a larger problem, something to watch and scrutinize. If serious enough, it calls for a repair.

Loose Parts

Loose parts cause the majority of shaking and vibration noises in your air conditioner. A few of the most common loose parts include the air compressor, the piston rods and even the fan or blower unit itself. These noises are clunking, clanking sounds that occur along with a vibrating action. The only method of repair is a complete compressor replacement, which is a repair only a certified air conditioner technician is qualified to make. The compressor is a fully sealed component, so individual parts in the compressor cannot be repaired.

Fan Blades

Fan blades cause noise, shaking and vibrations even when properly secured. If fan blades contact the exterior structure of the air conditioner due to a bent fan blade or broken and misaligned grate, a constant, repetitive noise and vibration results, which sounds like a ticking or banging from the interior of the air conditioner. Vibration in this case is limited but still present.

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When an air conditioner shakes, there is a problem with the mounting brackets. These brackets hold the air conditioner compressor steady as it operates. Normal vibrations and shaking would otherwise occur without these brackets. A loose mounting bracket causes the air conditioner to rock back and forth and creates a clanking sound. As the compressor starts up, this rocking and clanking sound begins, resulting in a very loud and fast vibration and noise. It also occurs when the unit shuts down.

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Sometimes air conditioners squeal, hiss, hum or screech. Each noise is often accompanied by a vibration. Humming sounds along with a vibration may indicate a bad capacitor, the electrical part responsible for starting the machine. Hissing sounds tend to indicate a pressure problem while screeching and squealing sounds are fairly common in window air conditioners and in central air conditioners. This sound is also a result of the compressor motor. It usually starts when the unit turns on and continues through its normal operating cycle. Vibrations always occur in the air conditioner due to moving parts and the compressor motor's operation.


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1 Answer

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If the compressor is not running but you do have power to the air conditioner there may be a problem in one or more of these areas:

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1 Answer

Unit is running, but is no longer cooling. Fan is blowing, but air is not chilled (or cold). Unit has been running fine until a couple days ago. It has been turned off for the last 12 hours and tried...


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2 Answers

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2 Answers

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  • Evaporator

These items are not user serviceable. You will need to contact a qualified appliance repair technician to repair these components.

If the compressor is not running but you do have power to the air conditioner there may be a problem in one or more of these areas:

  • Compressor

  • Overload and/or relay

  • Thermostat (Open thermostat)

  • Burnt wiring

  • Bad selector switch

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2 Answers

Never gets cold


I think there is a problem with the compressor. The compressor has failed.

Apr 07, 2008 | Dometic Rooftop RV Air Conditioner

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