You must be logged in to post Login Register


Register? | Lost Your Password?

Search Forums:


 






Minimum search word length is 3 characters – Maximum search word length is 84 characters
Wildcard Usage:
*  matches any number of characters    %  matches exactly one character


Forum
Marine-AC Topics
Troubleshooting
Noise when starting

Noise when starting
Print this Topic
Page:   1  
Post
New Member

PatSea

posts 2

9:54 am September 7, 2011
Print this Post
1
0

I have a 32' express cruiser with what I believe is the original A/C system (except the digital control). It is a Mermaid Mfg. model 12, heat/cool reverse cycle. it works very well even on the hottest 90 degree days. It is located under the setee seat. I get about a 18 to 20 degree differential between the cabin intake air temp and the discharge temp. The compressor runs fairly quietly, but it makes a very loud noise when it starts. I'm assuming this is the contactor slamming shut. is there anything i can do to get a quieter start?
Admin

Steve Pooler

posts 1127

10:04 am September 7, 2011
Print this Post
2
0

That would be hard for me to say…Not hearing it & you assuming it's a contactor…Is it a CLACK type noise ?

 

About all I can offer is…If in fact it is the contactor making the noise…Try replacing the contactor…But contactors do Clack when they pull in….If it's more like a chatter…Then yes the contactor is close to failing altogether…

 

Or you could go with digital controls that a contactor is not needed…Then bypass the contactor & the compressor switching & load carrying would be done by the new control box….Contactors are much cheaper though…

 

Steve~
New Member

PatSea

posts 2

10:49 am September 7, 2011
Print this Post
3
0

Steve, yes it's a loud CLACK noise that only lasts for an instant at startup. It is not a chattering noise. I'm assuming it's a contactor, don't know what else it could be. The CLACK noise is the same as it's always been since I bought the boat 11 years ago. Can you give me a ballpark cost for the digital starter?
Admin

Steve Pooler

posts 1127

11:04 am September 7, 2011
Print this Post
4
0

I did not say digital starter…But you could replace the contactor with a solid state relay…I would need to know what voltage is feeding the contactor's electromagnetic coil…

I believe Mermaid did it two different ways depending on the control they were using…Some were 24 volt & some 115 volt…

 

I was speaking of a complete new digital control system which starts at $565.00

A solid state Relay from Dometic would be around $100.00

 

Steve~
Page:   1  
Topic RSS

About the marine-ac.com Forum

Forum Timezone: America/New_York

Most Users Ever Online: 29

Currently Online:
9 Guests

Currently Browsing this Topic:
1 Guest

Forum Stats:

Groups: 5
Forums: 11
Topics: 398
Posts: 2369

Membership:

There are 334 Members
There have been 143 Guests

There are 2 Admins
There is 1 Moderator

Top Posters:

GeorgeH – 47
Angela – 45
z28jimi – 25
MexicoMike – 21
reefgeorge – 21
ThirdHatt – 18
davidwigler – 17
Mr. Dee – 17
biohazard – 17
mixman – 16
Ultimate Indulgence – 15
sabrejocky – 14

Recent New Members: becsvet, adjustrite, blackwatch30, DWB, Raymond, pbrads1021, sizematters, cgeist, TMorse, Iproff, Ernie Jones, Holsum69

Administrators: Steve Pooler (1127 Posts), Scott Pooler (13 Posts)

Moderators: Steve Pooler (1127 Posts)



 
Bookmark and Share