What should I do if my Onan generator is not running?
What should I do if my Onan generator is not running?
As soon as the Onan power generator is up and running, use the multimeter to check the AC output voltages. If there is no AC, proceed to check the field flash voltage through the field flash pin of the board. In the case field flash voltage is not present, the control board may be defective.
Why does the oil pressure switch on Onan generator stick open?
The oil pressure switch of Onan generator often sticks open in case the unit has not seen any use for an extended period of time. In many cases, the situation could be resolved by multiple start/stop cycles, some light tappings should work as well. 2. Defective Control Board
What happens when you start a generator in an RV?
This is what normally happens when you start your genset. Pressing and holding the start switch causes the control board to send 12 volts to the ignition, fuel pump, choke heater, start solenoid and field flash circuits. The engine then cranks and starts. Oil pressure and generator voltage build up within 1-2 seconds.
What happens when you turn off the genset?
This is what happens when you stop your genset. Pressing and holding the stop switch for a few seconds causes the control board to cut off the 12 volts to the ignition and fuel pump (and/or fuel solenoid valve) causing the engine to stop. On models equipped with magneto ignition, the control board grounds the magneto kill circuit.
What do you need to know about an Onan generator?
Before any evaluation of the controls, regulator or generator can proceed, the Onan engine must have oil and fuel, be in running condition and the 12-volt battery charged. The electronic governor, 151-0752, on Models BGM and NHM, Spec B and later, must be functioning properly.
Why does the Onan 4K generator not have an oil filter?
For example, the Onan 4K generator doesn’t have an oil filter. On the other hand, you have to use the right oil and never use old oil to keep the generator from clogging up. Know the right level of oil, because over-filling will cause the generator to shut off just as too much would.
Why is my Onan generator producing low AC voltage?
If field flash voltage seems pretty normal, the regulator could be the source of problem which you could determine simply by running 12 volts through a diode to the regulator pin 9. In the case the generator starts producing normal or slightly low AC voltages after that, the regulator is definitely defective.
How to troubleshoot a generator in an RV?
CHECK OIL Check engine oil level before starting. 2. GAIN ACCESS Remove panel or cover to gain access to the control board. Some disassembly may be required. The exact procedure depends on the model. 3. CHECK BATTERY VOLTAGE Connect the negative voltmeter lead to GROUND and the positive lead to the
