Refurbished Cellpro Powerlab 8

[kyleservicetech]

Hi Tim
I've received my refurbished Cellpro '8 charger, and copied all of my presets from my original '8 charger to the new unit.

When trying to update with the new presets, it immediately came up with errors in factory Presets #27 and #28. I did not mess with #27 or #28. When trying to correct them the unit indicated only the factory can change them. I finally corrected these two by copying another preset, and over writing #27 and #28.

Today, I set up the refurb unit on my 25 Volt, 25 Amp DC power supply. The '8 charger shows proper individual cell voltage, proper power supply volts, power supply amps (At near zero amps) it looks like everything works, BUT it won't apply any charging current to my battery. The displayed charging current stays at zero Amps, verified with my Astroflight wattmeter. The LCD timer shows seconds going by, and even after two minutes, the charging current is zero amps. Directly substituting my original '8 charger with the same cables and all worked fine.

Went around and around on this for several hours. Everything is good, all voltages on the balance cables are correct, the banana cable is correct.

I finally found out by accident that the refurbished charger WILL charge, if I drop the power supply voltage to 18 Volts DC or less. Increase the voltage to 24, and it will NOT charge my 6S2P A123 battery pack.

Something is definitely wrong with my Refurbished '8 charger. Is this correctable in the field, or does it have to go back to FMA?