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We have a 2001 Hobby 600 on Fiat Ducato 2.8 turbo diesel.
After five years with no problem the charging unit has starting playing up. Initially when used off grid we had no problems at all. End of last season in France when on a France Passion site with no hook up the unit issued a loud click and all 12 volt power was lost. Starting the engine resolved the problem for a while but again a loud click and all 12 volt power lost. Back home and plugged into 240 volts the unit initially started clicking non stop but after switching on and off a few times it appeared to be working normally. However the LED light did not turn from red to green on the control panel. I suspected that the leasure batteries had reached the end of their life. (2 x 95 amp/hr in parallel ) as they were five years old. After trying to charge them independently outside of the van neither would hold a charge and dropped to 8.5 volts quickly. I have now replaced them with two new 110 amp/hr batteries. The LED still does not turn from red to green.
Testing with a volt meter directly at the batteries with the engine running, the alternator is delivering around 14.5 volts to the batteries which is sufficient to charge them. The charger unit appears to deliver 13 volts when attached to the mains and the red led does not change to green. Even if I fully charge the new batteries independently of the van so that they show 13 volts initially and then connect them to the van charger overnight the LED stays red.
Any suggestions would be very gratefully received .
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