1. Power generation testing
2. UPS (Uninterruptible Power Supply) testing

1) No fuel or insufficient fuel quantity.
2) The engine and cylinder cooling water temperature are low.
3) The battery voltage is low.
4) The jet oil pump has air.
5) Start motor malfunction.
6) Control circuit malfunction.
handle:
1) Check according to the above situation, and if necessary, heat or add oil.
2) Check if the fuel filter is clogged.
3) Check the jet oil pump, loosen the plug to release air
4) If the battery voltage is too low, it should be charged evenly. If there is a malfunction in the starting motor, corresponding inspection and handling should be carried out.
5) Check the control circuit and eliminate any related faults.