Hi,

You will have to help me out on this one, What type of controller has it got, assuming its a TG-V or later. What is the unit set at, is it running fresh where at this time of year it could be hours before it needs to come back on again, thinking as i am typeing, have you put an ampclamp on it while it is shutdown, the unit should probably only draw 1amp while it is at setpoint as only the control circuit should be energised, is there a drain somewhere on the circuit, solonoid coil pulling in would soon drain the battery. The battery would have to be really flat for that not to allow the unit to run, when i used to get called out to a unit that wouldn't start on diesel i would try it on 3 phase and let it charge that way. The later SR versions obviously switch over to diesel if the battery goes too flat but this doesn't help in this case.

Any information would be helpfull

Regards

Ray