Steca (Studer) XPC 2200-24 inverter problem.

[Spacebass]

Firstly Thank You for the opportunity to join your forum.

I have just bought a Steca (Studer) XPC 2200- 24 inverter second hand for my 24 volt solar system .
When I wired it up and turned it on with AC in and out connected the AC present light was flashing which means suitable AC is not present at the input (which it was) , on the AC out side after a few minutes this indicator light was also blinking which means the device is searching for a load , I had this output connected to an automatic switchover switch whatever was reaching this because the indicator light on it was flickering was not enough to make it switch to this unit. The battery status light was on 100% and the on off indicator light was at soms stage flashing which means 'the unit is temporarily turned off and will automatically turn on ' which I did not see.

 

[Jim_e_Jib]

It wasn't on for long I live in the tropics maybe that does not help and maybe I cannot clamp the cable tightly enough in the O ring connector socket.

Back to the main subject The XPC 2200 -24 today I plugged it in again and some different things happened 1. When I turned on the AC the yellow AC light came on and stayed on solid quite a long time about 1 minute then started flashing 2. The battery was making what I believe is a charging sound quite vigorously , 3. The AC output light did not come on at all 4. I plugged my usual load into the AC output socket this usually shows 1, 3 or 5% on the 3000 watt inverter I don't know what was happenning with that load but when I turned on 3 watt led bulb by the set up coming from the same consumer box the inverter made a buzzing noise and turned off and then turned on again it did this 4 times as listed in the 'overload section of the Steca XPC manual.
I left it that quite a lot to hapenn in a couple of minutes doesn't make much sense to me, will try again in the next couple of days.

Could the corrosion be contributing to a poor electrical contact with the DC cables or the bus bars that appear to connect to those posts? Does it need more than just a vacuum cleaner - perhaps a thorough clean to ensure good metal to metal contact throughout the DC circuit?