Problem with my Ac and heat

[redneck joe]

mine was a bad pump. Most likely cause or at least the first to check.

 

[skylark]

No - there is no code - and no water!

on my boat If the compressor was running with no water running through, it will shut down the system with a code.

 

[Bucit]

Delete

 

[dvoyer]

Have you checked the "air filter" ? There is a mesh screen in front of the radiator of the A/C. If it's dirty, and it doesn't need to be clogged, the compressor won't engage and then won't send signal to the pump (no current at the pump). I already had this problem.
Dominic