Cruisair/Dometic HVAC

[Dream Catcher]

Is there a water flow sensor on these units, if so where is it ? :smt100

 

[480ces]

All the ones I've seen do not have a waterflow sensor.

Without water they simply shut down on the high or lower pressure limit (depending on cool or heat mode).

 

[Dream Catcher]

Thanks, the unit turns on a few seconds then shuts down.

 

[carterchapman]

If it is no or low water flow, you should get a HI PS code on your SMX II pad. Do you have water flow out of your thru-hull?

 

[480ces]

If it is no or low water flow, you should get a HI PS code on your SMX II pad. Do you have water flow out of your thru-hull?

That's true if you're in cool mode. In heat mode you may get a LO PS code with no water flow. LO PS can also come from low/no referigiant.

Running Heat with no water flow runs the risk of freezing any water in the coil and causing serious damage.

 

[electricaldoctor]

Is your pump working? Do you have water flow? This is where it all starts Dream Catcher.

 

[electricaldoctor]

Your compressor might be fried or you may just need a new starting capacitor. If you cannot make these determinations on your own, you will need to put a call out to a reputable AC tech. Let us know how you make out.

 

[Dream Catcher]

The sea pump and compressor turns on for a few seconds then code on panel reads HI P5, I have put water flow through unit from water hose and tried that, still get same results.

 

[electricaldoctor]

http://https://www.flightsystems.com/pdf/cruisair-troubleshooting-guide.pdf

Check this out.