Comments on: Tech- Tune up your rooftop A/C

By: Tom

Tom — Thu, 10 Sep 2009 03:59:01 +0000

Chris,
Good article. I never knew how to access my evap coil.

While the cover of my Carrier a/c unit was off I noticed there is no insulation on the plastic shroud covering the evaporator coil. Would it be beneficial to add insulation to the outside or inside of this shroud?

By: Chris Bryant

Chris Bryant — Wed, 17 Jun 2009 20:08:41 +0000

Hi Kim- while it’s possible the compressor is bad, that’s really not something that happens very often- it’s probably either a wiring problem or a bad start capacitor/start device.

Hudson- it sounds like the compressor relay in the control box is sticking- you can try the “quick and dirty” method of removing the filter (the box should be at the front) and giving it a good whack, but you will probably have to replace the circuit board- not a terribly expensive part.

–Chris

By: hudson

hudson — Wed, 17 Jun 2009 02:35:44 +0000

I have a Bounder and the thermostat was in off position, but while stored the A/C came on and we cant get it to cut off except to turn all breakers off. What can I do to fix it?

By: Kim Chambers

Kim Chambers — Fri, 29 May 2009 08:21:26 +0000

Hi i have a question about a ac unit. I have not used the camper all winter, We took it out to a campground and plugged it in. And the fan works fine, but when you turn on the ac in does let the compressor kick in, checked the voltage, and and amps, got enough,, good the compressor be bad? How can you check that? Trying to save a few bucks here,, it is insured, not sure though if the insurance would replace ac unit though, thanks for any help.

By: barry

barry — Fri, 06 Feb 2009 00:17:15 +0000

I have a ducted A/C dometic penguin unit and wonder what would I need to do to clean the coils. Do you have to remove the unit from the opening to access the inner condenser coil? I cannot see the A/C unit from inside as it is ducted and the filters are just foam pads about a 1/4″ thick and 5″ in diameter. I have taken these down and rinsed them out but they don’t seem like a very good filter medium, any other filters out there that are any good? My unit is 2 years old and probably needs cleaning so any help or ideas would be appreciated.

By: Tech- Top 10 Forgotten Maintenance Items

Tech- Top 10 Forgotten Maintenance Items — Wed, 04 Feb 2009 21:15:26 +0000

[...] you do decide to clean the coils, as I talked about in my blog post Tune up your roof A/C, it’s a great time to carefully inspect all of the seams and sealants on the roof- this [...]

By: Jackie

Jackie — Tue, 07 Oct 2008 02:48:04 +0000

I have a Coleman RV Roof Air Cond. It is air cond only and no heat. The problem I’m having is when I turn the air cond all the way off, my compressor keeps running. If I turn the thermostat to “warmer” it will finally stop the compressor from running. ( even with the air cond turned all the way off now ) I have had the air cond turned all the way off for at least 10 min’s or sometimes longer, and all of a sudden my compressor will start running while my air cond is turned off.. I ordered and installed a new thermostat switch, but it is still doing the same thing as before. I have good cold air anyway. Any ideals what I might check next, and if so, maybe tell me how to do it? Thanks, Jackie. jdt233@bvunet.net

By: Christine

Christine — Wed, 20 Aug 2008 17:34:33 +0000

Need help. I have a Duo Therm Dometic unit I have replaced the Thermostat, control board, and one of the compasters. The unit will not cut off. when it reaches a certain temp. the only way it will cut off is switch the hi low switch to low and it will cut off. It will not cut off by the cool off heat switch. When it reaches a certain temp the fan will switch from high to low . Please email me back with some suggestions I don’t know what else to do. Thanks

By: Reynz

Reynz — Thu, 14 Aug 2008 14:29:23 +0000

Found a cleaner, follow the link below…

Enviro-Chem A/C Coil Cleaner 38-1706
Save energy and make your air conditioner more efficient by keeping the coils dirt and grime free. Just spray on – no rubbing or high powered spraying needed. Leaves a nice deoderizing fragrance on coils. 20oz.

http://www.rvupgradestore.com/index.asp?PageAction=VIEWPROD&ProdID=1641

By: Marcus Gordon

Marcus Gordon — Wed, 13 Aug 2008 11:26:40 +0000

well can anyone help me with A Rv rooftop air conditioner coleman it’s not got any airfilter the inside has alot of dirt and crud on the inner coil I think that right so would this cause it not to stay on it clicks on and back off in about 2 mins and there is cold air coming out .