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Open Roads Forum  >  Tech Issues

 > Dometic Air only fast speed

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ajriding

st clair

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Posted: 12/30/18 11:34am Link  |  Quote  |  Print  |  Notify Moderator

Bought a used camper. Too cold to test the AC, but the fan worked, I thought.

The AC has only one speed, haulin butt. Is this an easy fix? This seems like a much faster speed than my other Dometic AC in the camper I have for sale.
The fan is also rubbing on something, maybe the wheel is touching the sides, seems unbalanced.

Is there a way to trick the compressor to come on? I tried holding the temp probe in my fingers already. I would like to know if compressor will kick in before messing with the fan speed. Maybe a lighter?

Dometic Penguin.

SoundGuy

S Ontario

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Posted: 12/30/18 11:48am Link  |  Quote  |  Print  |  Notify Moderator

Not enough info. Is this A/C ducted and controlled by a factory original wall mount thermostat OR has it been replaced with an after market thermo intended for use in a house? If the latter the PO didn't wire in a switch that would allow 2 fan speeds and simply chose the highest fan speed.


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ajriding

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Posted: 12/30/18 11:53am Link  |  Quote  |  Print  |  Notify Moderator

its unaltered. regular drop-in AC unit on the roof. no ducts, just the roof panel.

Dometic Duo-Therm
from 2005 probably if it is original to the camper.

Chris Bryant

Arden, North Carolina

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Posted: 12/30/18 12:03pm Link  |  Quote  |  Print  |  Notify Moderator

Mechanical controls on a Penguin I believe you should have three speeds, and warmin* the thermostat capillary tube should make the compressor kick in. Sound# like it has issues.


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2oldman

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Posted: 12/30/18 12:15pm Link  |  Quote  |  Print  |  Notify Moderator

Heat it up with the furnace.

ajriding

st clair

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Posted: 12/30/18 12:17pm Link  |  Quote  |  Print  |  Notify Moderator

Has 3 speed selector, but just turns fast no matter the speed selected, that is the issue, yes. I'm pretty sure there is an issue. you have restated correctly. thanks

dougrainer

Carrolton, Texas

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Posted: 12/30/18 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

I would say that someone has bypassed the Fan control. Heat up the Tstat sensor tube with a hair dryer, that will cause the compressor to come on. Doug

John Wayne

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Posted: 12/30/18 01:13pm Link  |  Quote  |  Print  |  Notify Moderator

He may have made it run on hi speed only because it was icing up at the lower speeds in humid weather.


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ajriding

st clair

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Posted: 01/12/19 05:11pm Link  |  Quote  |  Print  |  Notify Moderator

icing up bc of low coolant?

I took AC unit off. It on a wagon currently, got it for sale for on craigs for $150 if someone local wants it, and I may try to work on it months from now when I have more timeā€¦

ajriding

st clair

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Posted: 01/13/19 09:39am Link  |  Quote  |  Print  |  Notify Moderator

I tried the hair dryer method. No compressor came on. This is on an old unit I have that worked perfect a few years ago when I took it off. I get the temp sensor wire hot, but is the coolant too cold on a 35 degree day for compressor to come on? Seems like maybe the temp wire is not the only deciding factor. I'd like to show a buyer that the AC works if he buys in the winter.
How do I trick it on?

Coolant in the summer when running would be hot on one side and cold on the other, now it is cold on both.

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