Inverter fan running constantly!!

[Davidj1]

My solar guy has just installed a third outback alino 5000w inverter for my off grid power supply. The inverter fan has 3 speeds, this runs at full noise CONSTANTLY!! Even at night when there is no solar collection and 0% load ie NO LOAD AT ALL, fan runs full speed. This system is really starting to give me the %$#@. Wish i had gone the option B. Any suggestions please? Cheers

[raysun]

My solar guy has just installed a third outback alino 5000w inverter for my off grid power supply. The inverter fan has 3 speeds, this runs at full noise CONSTANTLY!! Even at night when there is no solar collection and 0% load ie NO LOAD AT ALL, fan runs full speed. This system is really starting to give me the %$#@. Wish i had gone the option B. Any suggestions please? Cheers

I don't know much about the Alino, but most fan control is via a small reed relay. The contacts can get stuck closed. Though it usually happens after lots of service hours, it can happen on new ones too.

The technical support folks, or more immediately, your installer, should be able to diagnose and correct a run-on fan.

[Davidj1]

Thanks heaps for your reply, have just discovered batteries are not holding full charge, not sure if this is related to fan. 48 volt system, float mode at 55.3 volts. However when pv array shuts off bat voltage drops to 52?