Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-04-2023, 08:59 AM   #1
Senior Member
 
Steve1.0's Avatar
 
City: Hobe Sound
Vessel Name: Kumatage
Vessel Model: Grnd Bnks 46 cl
Join Date: Aug 2020
Posts: 229
Low AC message.

A Riviera 445 I manage has started showing a "low ac" message on the salon air conditioning (marine aire) unit's control. C-zone shows 1 leg of 220v 50A coming down to 108vac. Shore power cord tests at 118vac both legs.
While on ships power no error message. What am I missing, where to start looking??
Steve1.0 is offline   Reply With Quote
Old 07-04-2023, 09:59 AM   #2
TF Site Team
 
Bacchus's Avatar
 
City: Seneca Lake NY
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 7,828
Start backtracking the shore inlet from A/C input & AC power panel back to the shore cord / boat inlet. Where do you have 118V vs 108V?

Is the main power panel L1 & L2 at 118V or 108V
Connections at breaker?
Do you have an isolation transformer?
Boat side of the inlet connector?
Breakers at inlet connections?

Gen will by pass all of that and feed direct to the power panel buss so it must be in the shore path ahead of the power panel.
__________________
Don
2008 MS 34 HT Trawler
"Bacchus"
Bacchus is offline   Reply With Quote
Old 07-04-2023, 05:13 PM   #3
Senior Member
 
City: St. Petersburg
Join Date: Oct 2007
Posts: 421
Is the marina wired as a 208VAC split phase or 240VAC split phase. In Florida, in a 208 VAC marina, when all the boats upstream have their air conditioning operating the poor guy at the end of the pier is lucky to get >200VAC!

If this is your case, and if you do not want to install a boosting isolation transformer, a buck/boost transformer between the shore pedestal and boat inlet will correct this issue.
__________________
Charlie Johnson
ABYC Master Technician
CharlieJ is online now   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 08:10 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012