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06-24-2021, 05:34 PM
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#1
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Senior Member
Join Date: Nov 2012
Location: Las Vegas
Posts: 600
Nevada
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A/C only produces hot air.
Galley A/C will only produce hot air
I checked for Freon leak(no signs of oil)
I checked the wire connections
Checked amperage on compressor it has a draw so it is running (not lock rotor amps)
I think it’s the control board where would I find one?
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2017 Dodge Ram 3500 DRW
2014 Voltage 3200
2005 FLHTCI
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06-24-2021, 07:37 PM
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#2
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Senior Member
Join Date: Dec 2012
Location: Tahlequah
Posts: 3,079
Oklahoma
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You probably won't find any oily residue from a leak with the new style refrigerants. You may find the refrigerant has leaked out of the seals.
You may find an HVAC guy that will tap a line and recharge the unit but it will probably leak down again.
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2013 Voltage 3800, 2012 Chevy 3500 HD
2010 Yamaha V Star 950
2009 Yamaha Raider
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06-25-2021, 04:05 AM
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#3
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Senior Member
Join Date: Sep 2017
Location: Calabasas
Posts: 783
California
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@OP, did the A/C slowly stop cooling effectively or did it happen all of a sudden? If all of a sudden I would be inclined to think electrical or something broke. If it was slowly getting worse than refrigerant leak seems more likely.
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2018 Voltage 3305
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06-26-2021, 06:17 PM
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#4
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Senior Member
Join Date: Nov 2012
Location: Las Vegas
Posts: 600
Nevada
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It was a sudden stop cooling.
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2017 Dodge Ram 3500 DRW
2014 Voltage 3200
2005 FLHTCI
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06-26-2021, 11:46 PM
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#5
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Senior Member
Join Date: Jan 2018
Location: Beaver Dam
Posts: 890
Wisconsin
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Quote:
Originally Posted by eightydo
Galley A/C will only produce hot air
I checked for Freon leak(no signs of oil)
I checked the wire connections
Checked amperage on compressor it has a draw so it is running (not lock rotor amps)
I think it’s the control board where would I find one?
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We need make and model of the air conditioner for better advice.
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Paul Bristol
Dutchman Kodiak Cub KD176RD 2018
Nissan Pathfinder 2015
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06-27-2021, 12:04 AM
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#6
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Senior Member
Join Date: Feb 2018
Location: FLA. largo
Posts: 220
Florida
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Did it freeze up meanining if you remove filter and look up does it look like a block of ice
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06-28-2021, 02:46 PM
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#7
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Senior Member
Join Date: Nov 2012
Location: Las Vegas
Posts: 600
Nevada
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Quote:
Originally Posted by persistent
we need make and model of the air conditioner for better advice.
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__________________
2017 Dodge Ram 3500 DRW
2014 Voltage 3200
2005 FLHTCI
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06-28-2021, 03:26 PM
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#8
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Senior Member
Join Date: Nov 2012
Location: Las Vegas
Posts: 600
Nevada
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Quote:
Originally Posted by Ovalvw
Did it freeze up meanining if you remove filter and look up does it look like a block of ice
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The unit is ducted so not visible without removing exterior cover. Not frozen.
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2017 Dodge Ram 3500 DRW
2014 Voltage 3200
2005 FLHTCI
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06-28-2021, 08:25 PM
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#9
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New Member
Join Date: Jun 2021
Location: Englewood
Posts: 6
Tennessee
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Hi eightydo
I got the same problem with my Dometic AC unit. My one is a 2018.
Finding an HVAC guy, that has the license to do it, is impossible.
It is easier to do it by your self. Check YouTube for: " How to recharge a RV AC unit?"
I did it and since then it works better than a brand new one.
Good Luck
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06-28-2021, 09:50 PM
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#10
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Senior Member
Join Date: Dec 2012
Location: Tahlequah
Posts: 3,079
Oklahoma
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Quote:
Originally Posted by Crossroads
Hi eightydo
I got the same problem with my Dometic AC unit. My one is a 2018.
Finding an HVAC guy, that has the license to do it, is impossible.
It is easier to do it by your self. Check YouTube for: " How to recharge a RV AC unit?"
I did it and since then it works better than a brand new one.
Good Luck
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Do you have links for the refrigerant and manifold gauge and hose and tap?
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2013 Voltage 3800, 2012 Chevy 3500 HD
2010 Yamaha V Star 950
2009 Yamaha Raider
Volunteering with Habitat for Humanity Caravanners
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06-29-2021, 12:42 PM
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#11
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Senior Member
Join Date: Jan 2018
Location: Beaver Dam
Posts: 890
Wisconsin
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Quote:
Originally Posted by eightydo
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I used the Dometic website.
https://documents.dometic.com/
I searched for Serial No. 25222966 and Manufactures # 459516.711JO
Neither number returned any results, so no, more is needed. Do you have manuals for the A/C?
I recommend you contact Dometic for instructions. I am sure they can provide parts.
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Paul Bristol
Dutchman Kodiak Cub KD176RD 2018
Nissan Pathfinder 2015
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06-29-2021, 01:16 PM
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#12
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Senior Member
Join Date: Mar 2015
Location: oshkosh
Posts: 55
Wisconsin
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Quote:
Originally Posted by Crossroads
Hi eightydo
I got the same problem with my Dometic AC unit. My one is a 2018.
Finding an HVAC guy, that has the license to do it, is impossible.
It is easier to do it by your self. Check YouTube for: " How to recharge a RV AC unit?"
I did it and since then it works better than a brand new one.
Good Luck
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If it is low on Freon, that means there is a leak, that needs to be repaired. If you just recharge without fixing leak, it will eventually leak out again, how soon depends on severity of leak.
Compressor not running, evaporator froze up, defrost sensor not working, fan motors not working, thermostat malfunctioning ??????????
The problems needs to be properly diagnosed for correct repairs.
My suggestion is to have a qualified refrigeration tech check it out an repair as necessary.
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06-29-2021, 01:39 PM
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#14
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New Member
Join Date: Jun 2021
Location: Englewood
Posts: 6
Tennessee
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Dometic AC 13,500 BTU
Here some information about the Dometic AC
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06-29-2021, 08:36 PM
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#15
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Senior Member
Join Date: Nov 2012
Location: Las Vegas
Posts: 600
Nevada
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Quote:
Originally Posted by wis-redneck
If it is low on Freon, that means there is a leak, that needs to be repaired. If you just recharge without fixing leak, it will eventually leak out again, how soon depends on severity of leak.
Compressor not running, evaporator froze up, defrost sensor not working, fan motors not working, thermostat malfunctioning ??????????
The problems needs to be properly diagnosed for correct repairs.
My suggestion is to have a qualified refrigeration tech check it out an repair as necessary.
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Dude did you read my original post? I checked the compressor. Running amperage was normal. Found no oil residue as far as a leak. I was asking about the control board.
__________________
2017 Dodge Ram 3500 DRW
2014 Voltage 3200
2005 FLHTCI
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06-30-2021, 01:59 PM
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#16
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Senior Member
Join Date: Mar 2015
Location: oshkosh
Posts: 55
Wisconsin
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How did you check the running amperage?? Did you use a compressor tester, or just check under normal operation. If normal operation and was running, that would indicate the control board is ok, as it is sending current to the compressor. Additionally, not all Freon leaks will show signs of oil residue. Only way to check for leaks, low charge would be to hook up gauges to system and using a leak electronic detector.
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06-30-2021, 02:39 PM
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#17
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Senior Member
Join Date: Nov 2012
Location: Las Vegas
Posts: 600
Nevada
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Quote:
Originally Posted by wis-redneck
How did you check the running amperage?? Did you use a compressor tester, or just check under normal operation. If normal operation and was running, that would indicate the control board is ok, as it is sending current to the compressor. Additionally, not all Freon leaks will show signs of oil residue. Only way to check for leaks, low charge would be to hook up gauges to system and using a leak electronic detector.
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I used a Fluke Amp probe, I looked at Full load amps and lock rotor amps. System does not have ports on it for the refrigerant.
__________________
2017 Dodge Ram 3500 DRW
2014 Voltage 3200
2005 FLHTCI
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06-30-2021, 02:46 PM
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#18
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Senior Member
Join Date: Dec 2012
Location: Tahlequah
Posts: 3,079
Oklahoma
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Quote:
Originally Posted by eightydo
I used a Fluke Amp probe, I looked at Full load amps and lock rotor amps. System does not have ports on it for the refrigerant.
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A recharge port can be easily installed.
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2013 Voltage 3800, 2012 Chevy 3500 HD
2010 Yamaha V Star 950
2009 Yamaha Raider
Volunteering with Habitat for Humanity Caravanners
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06-30-2021, 03:32 PM
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#19
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Senior Member
Join Date: Mar 2015
Location: oshkosh
Posts: 55
Wisconsin
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Yes a piercing valve referenced in post 13 can be used, provided it is the correct size and it needs to be installed on the low side (suction line). Usually there is a separate charging stub on the compressor that is soldered shut after being charged. This would be the best place to use piercing valve. However, those type of access ports are notorious for also leaking. Also keep in mind that any Freon cannot be released into the atmosphere, legally it needs to be reclaimed.
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06-30-2021, 04:06 PM
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#20
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Senior Member
Join Date: Dec 2012
Location: Tahlequah
Posts: 3,079
Oklahoma
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Quote:
Originally Posted by Crossroads
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Thanks for the links. Bummer is I don't have an EPA certificate to purchase the refrigerant.
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