No power to onboard genset

[Explorer1016]

Last winter I had a new Xantrex 3000w Pure Sine Wave inverter/charger installed in my RV. Get the rig home from the RV shop and test all systems. Everything worked. We take a 2500 mile trip to Utah and back, same thing, all systems good. RV sits in my driveway all summer except a short trip for a weekend with the guys. This time I didn't test the genset but we were heading out last weekend in the high heat and I wanted to run the generator so I could run the house A/C. No genset.

I do not have power to the start switch or the digital hour meter.
I pulled the remote start switch panel out of the wall to check the wiring and all is good, I opened the gen compartment and checked the fuse, good, hit the 30 amp breaker, no difference and I also hit the ECM reset switch. Still no power to the genset. It is a kubota diesel powered Powertech unit.

The heat is supposed to subside this weekend so I plan to crawl under the RV and start tracing my power wires to where ever they take me. I don't know if the gen 12v power comes from the house batteries (4-6 volt batteries) or from my chassis batteries (2- 12 volt batteries).

Any ideas?

Thank you
Dennis

[TRIPLE8]

Hi, about 2 weeks ago I went to start mine too and had no power. All lights worked off of 12 volts. I checked the battery and the terminals had a lot of corrosion built up. Cleaned them and all works good now. Might not be your problem but worth checking.

[Mandalay_Parr]

Try battery boost switch.
Try starting big engine then gen set while big engine is running.

I will keep thinking.
Oh, battery disconnect switch.