Community Forums

toolster · 11-10-2019, 02:36 PM

I have to replace my bedroom roof 13500 with heat pump ac unit, anybody
have some words of wisdom as to the best replacement and place to purchase ?

Jobert · 11-10-2019, 08:53 PM

I just did that this summer in a round about way. I moved the middle one to the rear and put a new Dometic high output AC/heatpump in the middle. What a vast improvement. I have the 5 button thermostats, with the middle and the rear being on the rear thermostat and the front is on a separate thermostat. You will need a retro board for the new unit to work with the older 5 button thermostat. It is available at PPL or other places. Be sure and check how the switches on the board are set so you can get them right on the replacement board. There are a couple of step by step threads on here about that also. Hope this may help, Happy Trails Bert

vito.a · 11-10-2019, 10:26 PM

Jobert gave you good advice. I also moved the old 13,500btu front heat pump to the rear bedroom and installed a new High Capacity (15,000btu) Heat Pump on the front.

The hardest part of the install is getting it on the roof. We used a very long ladder against the roof. Kept the A/C in the box and tied a strap around it. Then we connected a long tow strap to the box and two of us pulled it up the ladder.

All the new Dometic A/C systems come set up for the new CC2 programmable thermostat. You have to purchase a retrofit control board that goes inside the A/C to be compatible with your 5-button Dometic thermostat. PPL Motor Home parts was very helpful in ordering the heat pump and the control board.

Your other choice it to purchase two (or in longer coaches three) new A/C units and a new programmable thermostat. Then you also have to make it compatible with your furnace.

Like Jobert said, there are dip switches inside the A/C that must be properly set. These will be well covered in the install instructions. If you move the front A/C to the rear you will also need to reset the dip switches so the zone is correctly set.

I made a detailed writeup with pictures when I installed mine.
http://www.irv2.com/forums/f115/repl...ch-405503.html
Let me know if you have any questions.

toolster · 11-11-2019, 05:18 AM

Thanks guys for the info, is there anything against just replacing the current AC/heat
with a plain AC unit, we don't use the heat pump function so would be a waste to spend the extra $$. I would still need the retrofit control board I assume ?

vito.a · 11-12-2019, 04:23 PM

Yes. You can replace a Dometic heat pump with an A/C, and vice versa.
Yes, you will still need a retrofit control board for any new Dometic A/C or heat pump to talk to a legacy 5 button Comfort Control Center thermostat.

shepfly · 11-15-2019, 09:44 PM

I replaced 3 penguin a.c. with new penguin II this past summer. You have 2 weeks to register your new units before domestic cuts off online reg. They don't tell you about this! You then must have the seller do the reg. for you, boy is that fun! I registered my first unit on time, then domestics website would not allow me to do unit 2 & 3. I tried for several days to no avail, then called domestic direct and learned of the dealer reg requirements. Good luck if you buy more than one! You will receive an offer to extend the warranty out to 5 years. $$$ Dave