Low voltage into ATS
We have not used our 2019 GT5 since May and started the process of checking out systems before planned trip in October. So, we hooked to shore power to run refrig, then when satisfied, unhooked from shore and turned on generator (onan 5500), refrig operated, then turned on on Air Conditioner unit, it came on; then attempted to turn 2nd unit on and click noise occurred and all shut off.
We then ensured all electrical draws were off and checked all circuit brearkers. No tripped breakers found. Turned on generator and this time auto transfer did not occur. No voltage increase noted on readout.
So, did some reading then went to ATS (auto transfer switch) pulled cover and performed voltage measurements (as indicated in troubleshooting section of manufacturers paperwork). Both input voltage and switch output voltage. Input voltage read 55 volts AC (should be 105 to 130) and 0 output volts (should be 105 to 130 if switched).
Question is: what faulted between generator and input to ATS to result in odd voltage? What did we do to cause this type of failure? I would think that if we caused a voltage overload a breaker would have tripped?
Thanks for any insight!