On anchor with a 11kVA genset running I come out of Sustain mode by selecting Charge Battery to 100%. Cerbo GX GUI2.0 displays expected values UNTIL I fully load the genset, by for example turning on a second air-con unit. Then the GUI 2.0 display changes from the usual generator running parameters and instead shows GENERATOR STOPPED. House battery charging stops/battery begins discharging. In fact the generator is operating without any problem and is not overloaded.
Sometimes I can get things back to normal by hitting RE-DETECT VE.BUS and then CHARGE BATT TO 100% in the Cerbo’s MultiPlus settings…but more often than not Charge to 100% button is non-responsive and the only fix is to remove all AC loads and re-boot the MultiPlus. Everything then again operates normally right up to the point where I add a final/additional non-pass-thru AC load. Re-booting the Cerbo does not solve the problem.
Features of my install: MultiPlus 3000/50-120 (2600552), with hot water heater and 2 x air con units NOT passed thru Multi; CerboGX 3.62; DMC-200; SmartShunt 500A v4.19. DVCC is ON and max charge current is limited to 210A; max charge voltage to 14.8V. House battery is 810Ah AGM.
Note in the MultiPlus settings I have max AC1 grid limit set to 50A and the Override by Remote is checked: I’ve tried altering the current limit on the DMC between 15-42A, without effect.
On the Cerbo, I have nominated AC1 as Generator and I change this to ShorePower when back at the dock.
I cannot see anything in the MultiPlus settings that would cause its charger to reject charge current from the genset. I have experimented with setting the Weak AC and Dynamic Current Limiter features of the MultiPlus on individually and together: no effect on the above-reported problem.
I’m guessing I have a Cerbo setting wrong….can anyone enlighten me?
Thanks in advance.