Replacing Dometic Air Conditioner
Looks like my rear air conditioner is toast. The shop said new AC units were not compatible with my old 2004 Dutch Star system and they would have to replace everything, both AC units, control boards...
Forum Discussion
burgess001 wrote:
Thanks for the comments. It will help me talk a little more intelligently when I call around. As for the problem... It's been longstanding, at least in some form or other.
About 5 years ago, the furnace became erratic. It would not work below about 40 degrees. I had it worked on several times, by different shops and never did get it fixed until (MAYBE) this winter. Now, this spring, when out for the first time, the AC's... (BOTH of them) would not blow cold air on AC setting. In fact, the compressor would kick on, but it would blow hot (heat pump) air instead of cold. Took it to the shop and they said they got the front one working, but the back one worked for a few minutes and died. So, they want an obscene amount of money to get the back one going. I think they just don't want to work on it any more and shot me a price I would never agree to??? We shall see. I'm picking it up this afternoon.
Thanks again for the help. I'm not on here much anymore, but I know where to go when I'm in trouble. Kind of like your kids (grin)
IF you have the older Dometic HP and it blows HOT when calling for cool, you either have a bad reversing valve electric switch or the reversing valve is BAD. The switch can be replaced. The VALVE cannot and the unit is trash. YOUR model HP, IF the reversing valve circuit fails, the unit blows HOT when calling for cool. The NEW Dometic HP's, because of that default, now blow COLD if the reversing valve system fails. Because of this change in design, the NEW Penguin HP's will NOT work with the older 5 button wall tstat. The new Penguins come with the 12 button tstat control board already mounted on the unit. So, you MUST buy and install the 12 button to 5 button change out kit and install it on the NEW Penguin HP units. This lets the unit operate with your 5 button wall tstat. As I mentioned, IF both units are 11/12 years old, it would be best to replace BOTH roof top Penguin HP's and then just purchase the 12 button wall tstat. Because the New Penguin HP's already have the 12 button control board installed as part of the price. It is all plug and play, no wires to run. The new 12 button has programming capabilities for times on and off like Home type tstats. Doug
