Post edited 2:31 pm – September 18, 2011 by Steve Pooler

Hi Mike~

Though I don't deal with the FX-1 much (don''t sell it often)…I would treat it like any of the Micro Air controls (Micro Air builds that FX-1, and all of Marine Air's controls) Coastal Climate just markets the FX-1.

If you are sure you have the proper power into the FX-1 board (AC L1 & AC L-2 terminals) then it's easiest to remove one of your known operating keypad/displays & swap with the one that does not light up…Make sure you turn off the breaker/s before swapping…

If the known working display lights on the inop system, then you know you had a bad display/keypad…If not…You likely have a bad board in the FX-1 box…

If the good display still does not light up with the breaker on…I'd look closely at the cable that connects the display to the board.

You can also verify the suspect Display/Keypad buy plugging it into the system you removed the working keypad from…

Steve~

Post edited 7:16 pm – September 5, 2011 by Steve Pooler

Mike~

You can play with all the logic you want…I know it does not make sense…. 

Truth is….That one board is likely done… 

It WILL freak you out    But Play around with it all you want…Do you have low pressure switches ???….Are they connected ???

It normally takes a connection to a low pressure switch to make any control show low pressure….If one system had low pressure connection & the other didn't ???….Well that explains it because of no connection…But….

If all the above is not true about the low pressure switch…Your board is just failing in the weird ways that electronics & computers do…It IS looking for a pressure switch on this system…But it was not looking for one on the other system ???…

Unless it had one on the other system & was told it had one….That would be different & you must connect a switch or jumper to make it see what it needs to see…

Steve~

Post edited 8:47 pm – September 5, 2011 by Steve Pooler

MexicoMike said:

Yes it is mighty confusing because there is no connection on any of my systems/FX1's to a low pressure switch.  So I think your diagnosis is pretty much the case – weird electronic stuff!

 

So based on your other post would you recommend I just get another FX1 unit or the Cruisar unit that you mentioned?  It would mean that one stateroom would have a different control but I guess that's no big deal.

Mike~

That's up to you…The Cruisair control is more expensive…I'd love to sell you one, but do you want to spend the extra money ?

Yes…I like the SMX II family of controls better & I feel they are a better control…But all the other folks on HOF swear by the FX-1…And it is cheaper by far…

One thing I try to express is…If you buy from me, I do my best to help in any way I can…Now or Later….

A recent HOF member went around me after asking & saying he would buy…Then had the nuts to try to sneak in here to ask about his new CC control problem with installation & I just ignored him even though I knew the answer to his FX-1 installation issue….

One thing you get when buying from me…Is Me…Helping as much as I can…To me that's worth something & I do work hard at it.

But…One thing I'm learning…Is folks will take you for all they can…That's not how I want to do this thing here on the net…

I do try to give as much free info as I can but I do need to make sales to keep doing it…

Ok…Rant Off…Step Down….So Sorry    Be glad to sell, and or help you with anything I can…

Steve~

Steve,

Maybe I was unclear – I did just as your post suggested.  I then swapped boxes after out guest left because we need the bow/galley ac more than we need the guest SR ac.  So I moved the guest box to the bow.  I then figured "what the heck" and decided to connect the bad box in the guest SR just out of curiosity.  At first, when the LED came on, I thought that despite my initial checking of L1 L2 voltage showing OK, maybe there had been some sort of connection issue.  But obviously, as you noted, it's electronically defective in some way.

Yes, send me a quote on the SMX – 15 ft cable/temp sensor…

BUT things have become more confusing.  THis morning, I noticed that the galley/bow ac compressor was running, even though the unit's control button was "off"  (circuit breakers "on").  THe two air handlers were not running.  Looking in the ER, the compressor was totally covered in ice!  I find it really hard to believe that two different FX1 control boxes are bad but, from what I understand, everything that happens – compressor on/off, air handler on/off etc, is controlled by the FX1 box so I can't figure out how else that can happen.  I cross checked all box connections several times to ensure that I did not misconnect any wires to the terminal strip.