FX-1 Controllers for AC units

[trogers]

I put these on my previous boat and decided this spring to do do the 4 additional units on my Hatt. The previous owner put 1 in the salon.

Has anyone ever installed the high pressure monitors for the FX-1 A-C/Heat controllers. I had an A/C specialist tell me that installing these FX-1 controllers without the "pump sentry" was not taking 'reasonable advantage' the the systems capability.

My thought was that was the niceset anyone had ever been when they called me unreasonable. Aside from that they sentry units are about $25-35 per unit depending on the length of the cable run.

Anyone have any insight / experience working with these?

 

[SKYCHENEY]

I installed those digital controls from Coastal Climate Control. Those are the one's, right? I didn't make use of the extra monitoring either. I have thought about adding those sensors, but the compressors will shut down and just cycle on and off if you lose water to them. That's probably not too good for them, but at least it's not an instant failure that burns them up. For the price of the sensor and cable, I probably should put them in.

 

[Genesis]

High pressure safety switches should already be on the condensing units - they certainly were on my boat. Why not use those?

Or are you talking about some other form of sensor?

 

[Maynard Rupp]

I installed those digital controls from Coastal Climate Control. Those are the one's, right? I didn't make use of the extra monitoring either. I have thought about adding those sensors, but the compressors will shut down and just cycle on and off if you lose water to them. That's probably not too good for them, but at least it's not an instant failure that burns them up. For the price of the sensor and cable, I probably should put them in.

Come on Sky..You sure don't need those AC units in the Northern Michigan icebox. Of course the reverse cycle feature is real important,eh?

 

[SKYCHENEY]

The high pressure switches are on my units, but this sensor is a high temp sensor (I believe). It shuts down the compressor and shows an error message until it is reset. This would keep the compressor from cycling on and off continuously as it would with only the high pressure switch on it.

As for A/C in Michigan, we use it quite a bit. We're not way up north and we keep here 6 miles inland from Lake MI. It can get pretty hot in July and August. And yes, Maynard, the reverse cycle will get a workout here in a couple more weeks.

 

[Genesis]

The safety switch can be wired to the controller instead of to the compressor start and will signal the controller to cut it off if it trips. This performs the same function as a high temp (pressure is actually a BETTER measure of compressor distress than heat in this situation) and the controller will not restart the unit until reset.

This assumes it likes the input signal available from the switch (no reason to believe not, but I'd check with the controller manufacturer)