Westinghouse i4500 Generator
I posted a few weeks ago about trying to run my AC with a Yamaha 2k genny and Magnum 3000W boost inverter. Sort summary - the Yamaha just wasn’t strong enough with surges to work. So now I’ve pur...
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Itinerant1- Thanks
Good news is I changed 3 things this morning (AC input from 22A to 27A, LBCo from 10 —> 11v and Search from 10W to OFF); it was mid 90s out after church and it fired up like a champ: without inverter support being on, and with charging on.
Ran for 3-4hrs with one AC on, brought SOC up from 60% to 95% and kept coach in low 90s on the one AC while outside temps climbed to 103deg. Genny power was pretty consistent at ~3.24kW for most of the time, tailing down to ~2.3kW towards end as batteries mostly charged: powering charger, 1 AC, and the low fan on the other AC (no compressor)).
Bad news is I decided it was time to experiment and learn a little :(
* I turned off the charger, genny power to ~1.8kW; turned on the inverter support; and attempted to start the second AC. Inverter kicked out the genny and faulted.
Worse, is now I couldn’t get the genny to power any AC!!! I played for 20-30min trying to start AC on just genny, with inverter support, on inverter and then trying to bring genny in, with charger on and off and anything I could think of. Once the genny over current faulted and took itself out, but all the rest of the times the inverter would kick the genny out or not let it in sometimes faulting itself.
Temperature is rising and I’m kicking myself for messing with it. Finally looking under inverter tech section on faults I noticed Vdc was at 10.5 during last fault so I moved cutout down to 10.4v and next attempt the genny started and ran the AC (without going slow - fan, then compressor; and without locking the charger out.
At this point I’m running an AC again and not messing with it any more today. Tomorrow AM I’ll call Magnum, it sure seems like their “qualifying” of genny before/as switching it in is somehow not playing well with the generator and AC surge. Unfortunately I didn’t put an inverter bypass in when I installed the Magnum so can’t take it completely out of the loop.
Greatly appreciate your thoughts and help. If you have any other ideas I’m all ears, but doubt I’ll risk loosing AC again today :)
Good news is I changed 3 things this morning (AC input from 22A to 27A, LBCo from 10 —> 11v and Search from 10W to OFF); it was mid 90s out after church and it fired up like a champ: without inverter support being on, and with charging on.
Ran for 3-4hrs with one AC on, brought SOC up from 60% to 95% and kept coach in low 90s on the one AC while outside temps climbed to 103deg. Genny power was pretty consistent at ~3.24kW for most of the time, tailing down to ~2.3kW towards end as batteries mostly charged: powering charger, 1 AC, and the low fan on the other AC (no compressor)).
Bad news is I decided it was time to experiment and learn a little :(
* I turned off the charger, genny power to ~1.8kW; turned on the inverter support; and attempted to start the second AC. Inverter kicked out the genny and faulted.
Worse, is now I couldn’t get the genny to power any AC!!! I played for 20-30min trying to start AC on just genny, with inverter support, on inverter and then trying to bring genny in, with charger on and off and anything I could think of. Once the genny over current faulted and took itself out, but all the rest of the times the inverter would kick the genny out or not let it in sometimes faulting itself.
Temperature is rising and I’m kicking myself for messing with it. Finally looking under inverter tech section on faults I noticed Vdc was at 10.5 during last fault so I moved cutout down to 10.4v and next attempt the genny started and ran the AC (without going slow - fan, then compressor; and without locking the charger out.
At this point I’m running an AC again and not messing with it any more today. Tomorrow AM I’ll call Magnum, it sure seems like their “qualifying” of genny before/as switching it in is somehow not playing well with the generator and AC surge. Unfortunately I didn’t put an inverter bypass in when I installed the Magnum so can’t take it completely out of the loop.
Greatly appreciate your thoughts and help. If you have any other ideas I’m all ears, but doubt I’ll risk loosing AC again today :)
