P38A Chilling at the pool....

Grrrrrr · Oct 4, 2023

Mark Piercy said:
So.... Plenty of new parts for the aircon system on my lads 38'.
Our resident tech master has checked and tested the hevac.
We checked the pressure in the system and was off the gauge!!!!
Personally I have no experience with aircon systems and I'm going to ask those who have more than me this question.. (and probably many more)....
What would cause high pressure in the system. I can only think that maybe the expansion valve has jammed but I'm not sure even at that.
Compressor new, mahle.
New rad,
New dryer also.

TXV possible. Is the HEVAC unit original or has someone swapped it out? Marty did a big post on all the differences somewhere.

Datatek · Oct 4, 2023

Grrrrrr said:
TXV possible. Is the HEVAC unit original or has someone swapped it out? Marty did a big post on all the differences somewhere.

The only difference between early and late that I have found is the SSR that drives the compressor clutch, early drives direct, late drives via a relay, early is BTS4320, late is BTS43212. There are different firmware versions but I do not know what the changes are.

P38A Chilling at the pool....

Grrrrrr

Technician, Bodgit & Scarper Ltd

Datatek

Well-Known Member

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