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Hi. Sorry, haven't been on for a little while. Thanks for the info. I'll print some pages out and work something up for the boat with my HVAC buddy. I'm certain we can make something work for much less than the retrofit kit for $850 or so! Thanks, Frank M.

First, sorry about the conversation. I should have select for everyone to be able to view it. That was the issue. I run 120v. So, I see exactly what you're doing here. I need to run the fan continuously-one speed when I switch the Forward Air on. No need for variable speeds. Then, the...

Thanks. That's exactly what my HVAC buddy was recommending. He installed a Tecumseh compressor in my 16k unit a few years back and is quite capable of this. So yes, if you can please share the schematics & part numbers, I'm sure we can assemble that. FYI, Dometic makes a Retro Fit Kit for around...

Hi all, great thread with a lot of good info. In my 93 440DA, my master 9K unit (Original Marine Air Systems) is in need of just the circuit board. Everything else tests good. Unit comes on, blower runs, calls for COOL...etc. But, compressor and pump not receiving signal to run. Both run when...

Hi, I have a 93 Sundancer 440DA. Same exact boat as yours. I also have the entire owners manual packet in the case. But, I cannot find any documentation regarding this particular spec. If you need this info and don't have any luck at all, my boat is stored indoors at Sassy Marina. I'm sure that...