Hughes Autoformer Saga...
#1
The problem I’ve looooong been trying to overcome is to be able to get the Coleman Mach 1-P.S. 11kbtu AC to run while the honda genny is operating in the ‘eco’ mode, but always without any luck...The genny runs it just fine when NOT in the eco mode - but at much higher RPM, higher noise levels and fuel greater consumption. 

I also have a powerful pass-thru inverter-charger that (when desert dry camping) I often keep in the standby mode...I have tried to run the air with genny in the ‘eco mode’, but to no avail - each time I’ve attempted this the inverter picks-up the entire air conditioner load then tries unsuccessfully to hand the load back to the genny, but the genny (in eco) struggles and is never able to resolve this sudden increased load - so the inverter takes the entire air conditioner load and happily carries on until I switch the genny off of eco...

So I swapped out the OEM start cap with a electronic wiz-bang soft start, but with still no luck at this scenario while in eco mode...Then thinking I may need more power, I traded up from the trusty Honda 2000 to a Honda 2200, yet still no dang luck (Ugg!)...

So yesterday I pulled the cover off the Coleman and did a Ohm winding test and a continuity test, but found all to be within Coleman specs, including the running amps...I had tried this last summer but got higher numbers, so this time I used two different meters and both meters validated what the other read...

Still looking for an elusive answer, about a week ago I decided to take the ‘sage advice’ of a buddy and pulled the trigger on Hughes 30a Autoformer (delivered to my door), and placed it between the genny and the camper...

BRAVO!! After several test trials, what actually happens now is that with the Honda running uber quietly at near idle in eco mode, when the AC compressor ‘kicks on’ (with the inverter in standby), the inverter kicks in momentarily (3-4 sec) to allow the paired autoformer-genny ‘duo’ a moment to recognize and overcome (slightly rev) this SUDDEN, higher amperage load, whereby the genny (while still in eco mode...) happily assumes the entire air conditioner load, with only the slightest increase in RPMs!!...Granted, ambient temps today were only at about 57degF, but it seems that FINALLY all is now well in the high Nevada desert! BTW, the Hughes autoformer also acts as a surge protector...
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