Solar panel !!! Help and advice needed

chasstreet
chasstreet Forum Participant Posts: 57
edited May 2018 in Caravans #1

recently had a solar panel fitted to our bailey. Truma 65w 

all was well until this weekend. 

“Check voltage” message kept (5 timesin 2 days) appeared on the whale control screen. 

Looking into this seems that the battery was @15.4v and system had shut off all power to protect. 

Was Only happening in strong sunlite, so I disconnected the solar panel. This seems to have at least stopped the message reappearing 

Anyone with ideas ????

I have checked all connections, so can only surmise it’s the Truma solar controller 

 

Comments

  • cyberyacht
    cyberyacht Forum Participant Posts: 10,218
    1000 Comments
    edited May 2018 #2

    Sounds most probable. Get back to your supplier.

  • Unknown
    Unknown Forum Participant
    edited May 2018 #3
    The user and all related content has been Deleted User
  • Oneputt
    Oneputt Club Member Posts: 9,145 ✭✭✭
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    edited May 2018 #4

    My 100 watt sits at about 13.7v

  • lornalou1
    lornalou1 Forum Participant Posts: 2,169
    1000 Comments
    edited May 2018 #5

    max should be approx. 14.6/14.7 so as said would check controller.

  • Unknown
    Unknown Forum Participant
    edited May 2018 #6
    The user and all related content has been Deleted User
  • viatorem
    viatorem Forum Participant Posts: 645
    edited May 2018 #7

    If it is an SDC 10 you might want to check what type of battery it is set to Gel, AGM, or Liquid. My factory fitted unit was set to Gel which is the lowest voltage setting presumably to avoid gassing when connected to a liquid battery. I also see that the maximum voltage of the SDC10 is 16.6v which I guess is for very flat batteries.

    https://www.truma.com/web/downloadcenter/files/truma-miscellaneous-sdc10-sdc20-installation-operating-de-en-fr-it.pdf

     

  • Merve
    Merve Forum Participant Posts: 2,333
    1000 Comments
    edited May 2018 #8

    I would suspect the controller first. Sounds like it’s continuing to pump power into the battery and not cutting off when it should. Be interested in knowing what you find out!!

  • AJMJ
    AJMJ Forum Participant Posts: 7
    edited June 2018 #9

    I'd also be interested as our solar panel led lights 'flash' but sometimes are static and I haven't a clue what I should do about it.

  • Boff
    Boff Forum Participant Posts: 1,742
    1000 Comments
    edited June 2018 #10

    Normally the Led light on the controller flash when the battery is full.  A solid light means the battery is taking charge.   If you see the light flashing, try switching everything on to see if you can drop the battery voltage you may find the light goes solid.  Nothing to worry about, I suspect. 

  • AJMJ
    AJMJ Forum Participant Posts: 7
    edited June 2018 #11

    Boff, thank you, you've set my mind at rest.  I kept wondering what the problem was.  AJMJ

  • chasstreet
    chasstreet Forum Participant Posts: 57
    edited June 2018 #12

    Thanks everyone 

    spoke to Truma 

    they sent controller that arrived 2 days later 

    all good now 

    flashing light =battery charged 

    solid green light =battery is charging 

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