"Inlet High" Voltage on Inverter

GreenPowerManiac

Been getting this message a lot lately.    

New batteries  July last year.  10 x 12v @ 100ah each.  Inverts to 120 AC

Can't seem to regulate the voltage coming down the line.   Gets up to 16.6 volts and shuts down.   Have to start up again with bench grinder to draw it down.   
I've added a few loads and still have cloudy days where it does this.   

Is there a way to make or buy a voltage regulator coming from the battery bank ?

Estragon

Is the charge controller in an equalize cycle?

Are the batteries cold, and is there a remote temperature sensor attached to the bank?

Is the charge controller connected to the bank at the same place as the inverter?

Was the charge controller booted with battery power only? If it saw pv voltage at boot, it may think the bank is 24v?

10 parallel connections is a lot, and running large 120v loads is >10× the ac current coming off the bank. 15aac load becomes 150+acd, so you need heavy dc wire to handle.

The charge controller should be regulating voltage.

GreenPowerManiac

In order of ??'s asked:
No
No 
Yes
No Problems with charge controller.   Diversion load works.
Running from battery bank (wiring) 4/0 +/- to Inverter.  Plenty of poop.  

Charge controller only controls the current/volts coming into battery bank, and uses diversion for excess. 

Think I've found the issue........The voltage on the Inverter (Sunforce 2500) Pure Sine is showing nearly a volt more than battery bank.   Some older units could be adjusted by a small dial adjustment on the circuit board.   Not sure if this unit still supports that.   If so, can adjust the true voltage pretty close.   

Anyone have some intel on Sunforce Inverters in this aspect?

Vic

Hi G P M,

What brand and model number for your Charge Controller?

Thanks,   Vic

GreenPowerManiac

Morningstar TS-60
With diversion load and digital display

Vic

Thanks G P M,

Out of curiosity,   what is your Diversion Load for the CC?

Ten parallel strings of batteries CAN cause problems.

Am not familiar with your Inverter brand,   cannot help.

Thanks for the info,    Vic

GreenPowerManiac

Two 600 watt DC heating elements in 55 gallon drum and a DC Geo Pump for radiant floor heat in chicken coop.
Using RV coolant for year round freeze protection.

Used to have 15 in parallel.   No issues with them.   
I'll have to call SunForce to see if they can tell me how to adjust this.   In the mean time.  I've set up a car charger to direct more current into re-charging the battery bank it's drawing from.   

All my relays, batteries, and charge controllers say same voltage.   Just the display says 1 volt higher than any of them. 

Update:  
Seen a video on dialing the potentiometer into spec.  Going to try this.

mike95490

If the charge controller is reading a volt higher, it's often a poor connection between the controller and battery

GreenPowerManiac

GreenPowerManiac

Just had the worst April Fools joke on myself.   The Trimmer Potentiometer shorted out on a screw bracket taking a peek inside.  What a POS Sunforce is.   Now can't find a board at all anywhere.  Did find a Pot though, just don't know if it'll do the trick.    Any suggestions for a Fools day victim ??