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Climma compressor turning off randomly


Billy Newport
 

Settling in to our new (to us) Amel 55#56. Twice now, the AC compressor has shutdown, no lights, like dead. Air handlers still work, boat is on shore power (US waters, boat is Euro 220v). All systems on shore power appear to be fine.

The fix is to turn off and on the clima system on the AC breaker box in the engine room. Turn it off and then on and the compressor and electronics immediately come on. The LED display shows the usual numbers and then the boat starts cooling down.

How can I figure out whats causing the compressor/AC unit to shutdown like that?


John Clanton
 

Billy,

 

I have had the same symptoms, and think I have resolved mine.  I found that the power leads going into the sealed compressor unit were just a little loose.  I am not on the boat now to look at it, but my recollection is there is one lead that is secured with a bolt, and perhaps two leads that are spade & socket connections.  I removed all connections, treated with Corrosion X, slightly crimped the socket connections, then reconnected everything.  I had to use needle nose pliers to re-attach the spade/socket connections as the sockets were very tight.

 

I have not had a problem since then.  I assume, at least in my case, that the less-than-perfect connections were creating too much resistance and that the compressor shut itself down.

 

I hope this helps.

 

Please remember to put your name, boat info, and location in the signature line so that the group can recommend local resources.

 

 

John W. Clanton

Amel 55, No. 65

Antibes, France

 

 



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BTW, to those who may want to help Billie, but have earlier models:
Amel 55 #56 has the Climma Chiller System, which is probably unlike the very early 55's and all Amel's before Amel started using the Climma Chiller. It is not like all of the Climma installations in Amels before. It has a central cooling compressor with remote air handlers that receive chilled fluid (not freon, rater 80% freshwater, and 20% antifreeze) from a central engine room mounted unit. It has a saltwater circuit contained in the engine room for heat transfer and a separate pump that circulates chilled fluid.

Billie,
I think we all have limited knowledge of this system. Hopefully, some owner has experienced your issue. My guess, and it is really a guess, is that because resetting the system allows you to restart with cooling, there is probably either insufficient water flow in the saltwater or the chilled fluid circuits, causing an automated shutdown. If this is the cause for the shutdown, included in the troubleshooting should be the sensor that shuts it down. If I were you, I would call Coastal Climate Control and ask Rob or Gretchen for the contact information for the most qualified technician for Climma Chillers in your area. Contact:
Coastal Climate Control, Inc.
4831 Tesla Dr, Suite H, Bowie MD 20715
USA Phone: 301-352-5738
info"at"CoastalClimateControl.com

CW Bill Rouse Amel Owners Yacht School
Address: 720 Winnie, Galveston Island, Texas 77550 
View My Training Calendar


On Wed, Jul 15, 2020 at 10:11 AM Billy Newport <billy@...> wrote:
Settling in to our new (to us) Amel 55#56. Twice now, the AC compressor has shutdown, no lights, like dead. Air handlers still work, boat is on shore power (US waters, boat is Euro 220v). All systems on shore power appear to be fine.

The fix is to turn off and on the clima system on the AC breaker box in the engine room. Turn it off and then on and the compressor and electronics immediately come on. The LED display shows the usual numbers and then the boat starts cooling down.

How can I figure out whats causing the compressor/AC unit to shutdown like that?


Mark Erdos
 

Billy,

 

Try writing to Climma in Italy. They have an excellent customer service department and will help you troubleshoot the unit. info@...

 

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Tahiti, French Polynesia

www.creampuff.us

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Billy Newport
Sent: Wednesday, July 15, 2020 5:11 AM
To: main@AmelYachtOwners.groups.io
Subject: [AmelYachtOwners] Climma compressor turning off randomly

 

Settling in to our new (to us) Amel 55#56. Twice now, the AC compressor has shutdown, no lights, like dead. Air handlers still work, boat is on shore power (US waters, boat is Euro 220v). All systems on shore power appear to be fine.

The fix is to turn off and on the clima system on the AC breaker box in the engine room. Turn it off and then on and the compressor and electronics immediately come on. The LED display shows the usual numbers and then the boat starts cooling down.

How can I figure out whats causing the compressor/AC unit to shutdown like that?


Mark & Debbie Mueller
 

Hi Billy,

 

When the unit shuts off does it restart automatically?  If it is an automatic restart then some safety circuit within the unit is shutting the system down.  I am not specifically familiar with this unit but there may have a temperature sensor clamped to the exterior of the raw water heat exchanger, this will shut the unit down if there is low raw water flow to prevent overheating of the system.  Additionally, in many chiller systems there is a low flow detector in the chilled water portion of the unit.  The idea is to prevent freezing of the chilled water in the heat exchanger should the chilled water pump fail.

 

When the unit shuts down check to see if there is power at the main junction of the air-conditioning system.  If not, trace the problem backwards to the power distribution panel.  Also, give the system a very close visual inspection with a good light to look for anything out of the ordinary.  With the main power off verify the electrical connectors are plugged in or screwed down properly.  Is there a troubleshooting guide that provides clues to what the problem should be with this condition?  I hope some of these ideas are useful, good luck with your problem.
--
Mark Mueller
Brass Ring  A54