Monday, Sep 17, 2012 at 10:05
Hi Peter,
Regrarding the lights on the unit.
when I have the engine running, I get the alt led on showing charge going to the 2nd battery (ie 2nd batt led on) , and it stays on till the surface charge is gone from the charging source.
When I plug in the
solar, the
solar led goes on and shows charge to the 2nd batt, even if the alt led is on too.
Ive checked with a 100w panel the amps and volts in, and in lower light conditions have seen higher amps into the battery than from the
solar panel input using a clamp meter.
During this time, my power indicator led is always on, or better described as flickering, not a true
bright LED ON if you know what I mean.
A few questions just for clarification.
How are the two panels wired up, in series or in parallel ?
The 250 is a "12v" unit, not a "24v" unit, ie it will accept up to 20ish v from the panels.
Do you run an earth from the
solar panels to the unit?
Do you run an earth from the alt/1st batt to the unit?
Does this issue with the
solar charging alt light on, pwr light turns off happen with a fully charged or flat battery ?
Does this issue happen in low light or full sun conditions.
I have found the unit will start charging as soon as there is light on the panel first thing in the morning or at night, and when its decided the batt is fully charged will go into putting power back towards the alt/ 1st batt.
Running the fridge from the 2nd batt whilts its charging dosent seem to affect it and it can charge the battery in the mornings sun, then float it as it deems fit in the afternoon.
Are your batteries being charged at the end of the day, or are you having flat batteries ?.
When I first installed it, I noticed the lights went on and off a bit as you describe whilst it had a think about the batteries state of charge etc, but then went into charging mode soon after.
I also have a lcd display of battery voltage I keep an eye on, and it keeps the battery fully charged, or on float.
Hope this helps.
T
FollowupID:
770732