Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-01-2020, 10:15   #1
Registered User

Join Date: Jan 2020
Posts: 3
Cruisair A/C trips breaker

Hello,

New here. I would like to post this topic because upon lots of research I have yet to come to a conlusion about this problem.

I have 4 A/C aunits, all on different breakers but on the same water pump.

One of the A/C unit is tripping the breaker when the compressor enters. It does not trip the breaker when Fan only is blowing. When the compressor enteres (Cooling or heat) the amperage draw spikes considerably and the breaker trips. I am ruling out water pump becase the water pump is the same for 4 units and only 1 is tripping the breaker. I am also ruling out a worn out breaker because the amperage is spiking considerably.

It is a 4 year old unit and in great physical shape.

From what I have gathered, it could be a bad starting capacitor or a stuck/damaged compressor ?? Would those 2 be the only problems to this issue?

Any input would be greatly appreciated.

Thanks
__________________

lg54 is offline   Reply With Quote
Old 22-01-2020, 11:08   #2
Registered User

Join Date: Jun 2011
Location: Texas
Boat: Baba 35
Posts: 205
Re: Cruisair A/C trips breaker

I would swap out the capacitor and see what happens. Probably cost less than 10 dollars to find out.
__________________

ttex is offline   Reply With Quote
Old 22-01-2020, 12:49   #3
Registered User
 
ranger42c's Avatar

Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 4,216
Re: Cruisair A/C trips breaker

Quote:
Originally Posted by lg54 View Post
I am ruling out water pump becase the water pump is the same for 4 units and only 1 is tripping the breaker. I am also ruling out a worn out breaker because the amperage is spiking considerably.

Not good to completely rule out water flow.

Yes, the pump may be working, but the individual raw water line from pump to AC to discharge may have an obstruction of some sort, maybe enough to reduce flow on that one line... maybe enough to cause an overheat error on that one unit.

-Chris
__________________
Selby Bay, South River, Chesapeake Bay, USA.
ranger42c is offline   Reply With Quote
Old 22-01-2020, 16:02   #4
Registered User

Join Date: Dec 2019
Location: Sugar Land, TX
Posts: 40
Re: Cruisair A/C trips breaker

Quote:
Originally Posted by ranger42c View Post
Not good to completely rule out water flow.

Yes, the pump may be working, but the individual raw water line from pump to AC to discharge may have an obstruction of some sort, maybe enough to reduce flow on that one line... maybe enough to cause an overheat error on that one unit.

-Chris

Blockage is a possibility. How quickly is the breaker popping? I would think it would take several minutes to draw too much amperage and in my experience, unless total blockage, restricted flow just reduces the ability to achieve optimal cooling temp.
GreenWave is offline   Reply With Quote
Old 22-01-2020, 16:21   #5
Registered User

Join Date: Jun 2019
Posts: 81
Re: Cruisair A/C trips breaker

Put an amp meter on the L1 line input to the board, start unit and compare the max amps you see when the breaker trips with the RLA (rotor lock amps)
If it matched or is really close to the RLA number on the compressor label, the compressor is lock rotor.
If it doesn't match the number and is much lower, disconnect the black wire from the terminal strip that goes to #5 terminal on the start relay and see if it trips again.
You can rule out the pump by turning it off and trying to start the compressor, it will take some time to build enough heat to trip the HP switch and even longer than that to trip a good breaker.
I have also seen breakers fail too, so knowing what it is actually drawing on compressor start is key.
Coolerking is offline   Reply With Quote
Old 23-01-2020, 08:32   #6
Registered User

Join Date: Jan 2020
Posts: 3
Re: Cruisair A/C trips breaker

Thanks for the replys.

The breaker is tripping immediately (less than half a second after) the compressor kicks in (Cool or Heat). If it was waterflow, I would think Id get a HI PS alarm.

The amperage draw when compressor kicks in spike up considerably I would guess it would be close to 20 per compressor RLA specs. I am seeing the compressor amp spike on the boat's amp metering.

Assuming the compressor is locked, is there anyway to "unlock" it?

If the amperage draw is near the RLA specs of the compressor, can the problem still be the start capacitor?
lg54 is offline   Reply With Quote
Old 23-01-2020, 11:40   #7
Registered User
 
flyingfin's Avatar

Join Date: Oct 2016
Location: Cape Haze,FL
Boat: Carver,Cobia,Nacra, Columbia
Posts: 458
Re: Cruisair A/C trips breaker

Are you running on shore power or gen set? Did you check voltage on supply side of breaker? If OK, then you should put in new compressor start capacitor (should have one spare anyway if all four units are identical) and see if it starts. If not, probably bad compressor motor, then B.O.A.T.
flyingfin is offline   Reply With Quote
Old 23-01-2020, 11:50   #8
Registered User

Join Date: Aug 2017
Location: Sioux Falls, SD/Gilbert, AZ
Boat: Catalina 320
Posts: 1
Re: Cruisair A/C trips breaker

I had same problem with my A/C Heating unit. My compressor was faulty and I replaced the entire unit with MarinAir. Very pleased with the new unit.
I thought first of a weak breaker, but not the case. The high amp load on startup confermed the compressor. I have heard high or low freon can cause the same symptoms.
Good luck!
River Dance is offline   Reply With Quote
Old 23-01-2020, 12:09   #9
Registered User

Join Date: Aug 2014
Boat: Carver 560 Voyager
Posts: 18
Re: Cruisair A/C trips breaker

I had the same problem and it was determined that the compressor was starting on a bad rotor position. The Tech installed a "soft start" device and it solved the issue for several years until the compressor finally completely failed. It was not expensive.
Txcruiser is offline   Reply With Quote
Old 23-01-2020, 13:00   #10
Registered User

Join Date: Apr 2016
Location: Charleston, SC, USA
Boat: Island Packet 380
Posts: 11
Re: Cruisair A/C trips breaker

From the symptoms you describe, the problem is the compressor, and certainly not the waterflow. the compressor might be eitther mechanically stuck or has a short. Both problems would cause a very large current draw and the breaker will trip. To test for the short: there are 3 wires to the compressor (C, R, and G). Measure the resistance between each of the three pairs, that is, C-R, C-G, and R-G. You should get readings like 12 ohms, 7 ohms, and 5 ohms, where one reading is the sum of the other two (12 = 7 + 5). If any reading is 0, there is a short, and if any reading is huge, there is an open circuit (unlikely, because an open-circuit would not trip the breaker). If a short or an open circuit, there is no fix and the compressor must be replaced.

If the resistance readings are OK, then the rotor in the compressor is mechanically stuck. Try hitting it hard with a hammer (low probability, but might jar it loose). Or, try the software reset from an earlier post.

Unfortunately, compressors are VERY difficult to replace and you might need a new unit.
huhns is offline   Reply With Quote
Old 23-01-2020, 13:19   #11
Registered User

Join Date: Jan 2020
Posts: 3
Re: Cruisair A/C trips breaker

Quote:
Originally Posted by flyingfin View Post
Are you running on shore power or gen set? Did you check voltage on supply side of breaker? If OK, then you should put in new compressor start capacitor (should have one spare anyway if all four units are identical) and see if it starts. If not, probably bad compressor motor, then B.O.A.T.
I have tried it on both the gen and shore power. I will try with new cap.
lg54 is offline   Reply With Quote
Old 23-01-2020, 14:35   #12
Registered User

Join Date: Oct 2019
Posts: 36
Re: Cruisair A/C trips breaker

I would change the breaker, maybe for one slightly with higher amps.
Stewie12 is offline   Reply With Quote
Old 23-01-2020, 16:57   #13
Registered User

Join Date: Oct 2019
Posts: 123
Re: Cruisair A/C trips breaker

Quote:
Originally Posted by lg54 View Post
Thanks for the replys.

The breaker is tripping immediately (less than half a second after) the compressor kicks in (Cool or Heat). If it was waterflow, I would think Id get a HI PS alarm.

The amperage draw when compressor kicks in spike up considerably I would guess it would be close to 20 per compressor RLA specs. I am seeing the compressor amp spike on the boat's amp metering.

Assuming the compressor is locked, is there anyway to "unlock" it?

If the amperage draw is near the RLA specs of the compressor, can the problem still be the start capacitor?
The breaker tripping immediately indicates a dead short in the electrical system - check your wiring. I'm surprised that you could get an amp reading with the unit tripping out so fast.
joelhemington is offline   Reply With Quote
Old 23-01-2020, 17:15   #14
Registered User

Join Date: Jun 2019
Posts: 81
Re: Cruisair A/C trips breaker

There is no way to unlock the rotor, you could try a hard start kit, to eliminate the relay and capacitor to prove it out.
Google it.
Also, if you are going to meter the windings, do so by removing the 3 wires that are on the compressor itself, there are 3 pins that pass thru the compressor case that you will need to directly put your meter on they are usually marked on the cover...C, S, and R
Common, Start and Run, measure between C-S, C-R, and S-R.
If you list the exact compressor model # from the label, (it will most likely be something like AKA2515AXA).... we can tell you what the ohm readings should be.
Google it and you will see.
Make sure all of the terminals are tight and clean, loose/salty/burnt connects can also cause high amps.
Most of the compressors Cruisair used on the older FX systems are OEM with unique piping layouts to match the needs of the seawater cooling and layout of the condensing unit itself, and thus are much more pricey.
Some of the smaller ones are even no longer available.
Coolerking is offline   Reply With Quote
Old 24-01-2020, 09:52   #15
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 8,350
Re: Cruisair A/C trips breaker

Quote:
Originally Posted by lg54 View Post
Thanks for the replys.

The breaker is tripping immediately (less than half a second after) the compressor kicks in (Cool or Heat). If it was waterflow, I would think Id get a HI PS alarm.

The amperage draw when compressor kicks in spike up considerably I would guess it would be close to 20 per compressor RLA specs. I am seeing the compressor amp spike on the boat's amp metering.

Assuming the compressor is locked, is there anyway to "unlock" it?

If the amperage draw is near the RLA specs of the compressor, can the problem still be the start capacitor?
Being as dumb as a rock on HVAC I might think a reverse cycle solenoid could be hung up between AC and heat. A rap on it with a wrench might free it?
__________________

Cadence is offline   Reply With Quote
Reply

Tags
cruisair

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cruisair Trips Breaker - Please Help Hunky-Dory Plumbing Systems and Fixtures 20 08-01-2020 14:10
Cruisair A/C Tripping Breaker Houseboat_Livin Plumbing Systems and Fixtures 33 24-06-2019 13:02
Volvo Penta D1-30 Breaker Trips BrettB Engines and Propulsion Systems 4 24-02-2018 13:55
Xantrex Freedom 3000 trips breaker when charging DanDerrick Our Community 7 16-10-2017 09:27
Freedom 25 Trips Earth leakage breaker toewsrus Electrical: Batteries, Generators & Solar 9 12-08-2007 05:35

Advertise Here


All times are GMT -7. The time now is 04:47.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.