Weird solar control behavior. (1 Viewer)

Affiliate links here may earn MHF compensation
Jan 26, 2017
3,542
12,088
Mid Suffolk.
Funster No
47,068
MH
Autosleeper Inca
Exp
Eight Years and 28,000 Miles.
When the sun is shining brightly, my control panels (solar and vehicle) 'strobe' between 12v and 14v.

As a result any lights used in the daytime keep a rhythmic pulsing from bright to not so bright.

As darkness falls everything settles down, both batteries get fully charged, I have a Battery Master fitted.

Do you think I need better solar controller? IMG_20190524_180054596_BURST001~2.jpg

All this was already fitted to our van when we bought it.
 

Silver-Fox

LIFE MEMBER
Sep 5, 2014
9,351
29,648
Cheltenham Spa
Funster No
33,201
MH
Rapido
Exp
im a not so newbie
Is it possible any excess from the solar panels is being used to power the lights rather than going to “waste”

Just a thought
 
OP
OP
LesW
Jan 26, 2017
3,542
12,088
Mid Suffolk.
Funster No
47,068
MH
Autosleeper Inca
Exp
Eight Years and 28,000 Miles.
The Battery Master is designed to top up the vehicle battery with any 'excess' supply.

The hab battery is only 75ah, but supplies all our needs..
 

Lenny HB

LIFE MEMBER
Oct 18, 2007
54,931
157,309
On the coast in West Sussex
Funster No
658
MH
Carthago Compactline
Exp
Since 2008 & many years tugging
I think you need a solar regulator that work, sounds like yours has a fault.
It is possible the battery is faulty it could have a sorted cell and is overloading the regulator. If everthingworks OK when charged from the mains probably the regulator.
 
OP
OP
LesW
Jan 26, 2017
3,542
12,088
Mid Suffolk.
Funster No
47,068
MH
Autosleeper Inca
Exp
Eight Years and 28,000 Miles.
It does seem OK on the rare occasion I use the on board charger.. I'm also thinking that a better quality regulator might be needed.

Subscribers  do not see these advertisements

 
Apr 27, 2016
7,126
8,395
Manchester
Funster No
42,762
MH
A class Hymer
Exp
Since the 80s
Is there anything connected to the 'Load' terminals of the controller? I know there probably isn't, just asking.
 
OP
OP
LesW
Jan 26, 2017
3,542
12,088
Mid Suffolk.
Funster No
47,068
MH
Autosleeper Inca
Exp
Eight Years and 28,000 Miles.
Is there anything connected to the 'Load' terminals of the controller? I know there probably isn't, just asking.
I'm not sure which are the Load terminals, probably the two on the far right, with what looks like a 'light bulb' logo?

These aren't connected to anything.
 

funflair

LIFE MEMBER
Dec 11, 2013
19,783
31,934
Guisborough
Funster No
29,351
MH
MORELO palace
Exp
since 2012
At $23 (about £15) I would just chuck it away and buy a decent MPPT.

Martin
 
Apr 27, 2008
11,928
14,239
Eastbourne East Sussex
Funster No
2,327
MH
Hymer low profile
Exp
Since 1972
My old PMW controller used to do exactly the same in daylight when the batteries were fully charged. Basically it was not charging because the batteries were fully charged, then on switching anything on it started charging intermittently as the battery state of charge dropped and rose. It was particularly noticeable on the extractor fan which changed speed. This probably actually meant the controller was working as intended. Since replacing the controller with a MPPT one this problem has disappeared.

Subscribers  do not see these advertisements

 

Join us or log in to post a reply.

To join in you must be a member of MotorhomeFun

Join MotorhomeFun

Join us, it quick and easy!

Log in

Already a member? Log in here.

Latest journal entries

Funsters who are viewing this thread

Back
Top