A/C question

[Rickysa]

CruiseAir unit in the salon conks out and says "HI Pressure" when the salon door opens or the engine room is open....why would introducing warm air cause a "HI Pressure" failure?

(Strainers clean)

Rick

 

[Paul45c]

Rick, anytime I see high pressure on the SMX digital a/c controls, it means it's time to flush out your raw water coils. The good news is it's really easy to do. See Carl's post on flushing out heat xchangers (boy, that one thread is having a million uses lately, eh guys?!).

I'm thinking the door opening and the HI PS warning showing up is coincidence, but it could be that the system is having to kick on to cool the newly-introduced warm outside air. Who knows? Anyway, if you haven't flushed out your raw water piping in a year or so, it's due, anyway. After you do it, I swear they'll even SOUND different.