Classic transfer-switch clues
- Shore power works, generator runs, but the RV never transfers.
- Generator power appears after a long or inconsistent delay.
- You hear buzzing, chattering or repeated clicking.
- There is a hot electrical smell near the transfer switch compartment.
- Only some inverter-fed outlets behave normally.
Owner checks before opening anything
Reset the generator-mounted breaker, wait for the normal transfer delay, reset the RV main breaker, turn off heavy loads and compare shore power to generator power. Check any energy-management display or surge protector for delay or error messages.
Generator output versus switch failure
A transfer switch cannot pass power it never receives. If the generator engine runs but produces no usable voltage, the switch may be innocent. If a technician confirms good generator output entering the switch but not leaving it, the switch or its control path becomes likely.
Do not ignore heat
Loose lugs, worn contacts and overloaded wiring can overheat. Burned smell, discolored insulation, melted plastic or a buzzing switch means stop using that power path until inspected.
Related pages
- Onan generator runs but no power
- RV breaker trips when plugged in
- Lights work but outlets don't
- RV 120V and 12V guide
- Find RV electrical help
Sources and review notes
Follow the RV electrical diagram, transfer-switch manual and generator output specifications. Transfer-switch diagnosis is qualified electrical work because multiple sources may be present.