Onan 7000 generator error code 47
This code says in the book that it is an ignition code...My question is this...I had a bad chassis battery...Could this be the cause of the error code...?? thanks
Forum Discussion
It could be a number of things. Code 47 simply means you have no spark. Is there a secondary code? Did you replace the battery? What happens when you try to start it? Have you checked the magneto with a meter? Press the stop button three times and see what code is thrown. Do this several times. If the code 47 is the only code thrown then you're in pretty good shape. Usually no spark can be a bad board or the magneto going bad. Most likely your bad battery threw the 47 code and you will be ok but it helps to check to make sure....There's a process to follow that I have copied somewhere. I'll see if I can find it. My brain no longer holds things like it used to...:).....Dennis
Edit: Found it! Here ya go...D
On the genset, press 'Stop' 3 times within 5 seconds. This will make the light start flashing. If it continually flashes 3 times, press and immediately release 'Stop' one more time.
The light will flash all codes in numerical order, and then start over. If it gives you 47 3 times in a row, it is the only fault.
Next, verify whether the plugs are actually firing or not. The easiest way is with an inline spark checker that connects directly to your spark plug. If you do not have one, the old tried-and-true method of removing the spark plug, inserting it into the spark plug wire and then holding the plug to the valve cover still works just as good.
Do you have spark?
If not, we can do a quick check check of the magnetos.
Remove the control panel cover (where the start swtich is). In the back of the control box is the engine controller. It is the black box with the 24 wire connector. Disconnect the connector.
Set your meter to ohms, and connect the red lead to a good engine ground. Find the 2 wires marked J1-15 and J1-20. Connect the black lead to these pins one at a time. You should have continuity. These are the magneto sense leads.
Next check J1-6 to ground. It should also have continuity. This is the controller ground.
How do these wires test?
Let's also check the resistance of the secondary magneto windings. Disconnect both spark plug wires. Hook one lead of your ohmmeter to a good ground. Test the plug wires one at a time. The left one should read 13,700 - 33,000 ohms, and the right one should read 11,500 - 27,000 ohms.
Edit: Found it! Here ya go...D
On the genset, press 'Stop' 3 times within 5 seconds. This will make the light start flashing. If it continually flashes 3 times, press and immediately release 'Stop' one more time.
The light will flash all codes in numerical order, and then start over. If it gives you 47 3 times in a row, it is the only fault.
Next, verify whether the plugs are actually firing or not. The easiest way is with an inline spark checker that connects directly to your spark plug. If you do not have one, the old tried-and-true method of removing the spark plug, inserting it into the spark plug wire and then holding the plug to the valve cover still works just as good.
Do you have spark?
If not, we can do a quick check check of the magnetos.
Remove the control panel cover (where the start swtich is). In the back of the control box is the engine controller. It is the black box with the 24 wire connector. Disconnect the connector.
Set your meter to ohms, and connect the red lead to a good engine ground. Find the 2 wires marked J1-15 and J1-20. Connect the black lead to these pins one at a time. You should have continuity. These are the magneto sense leads.
Next check J1-6 to ground. It should also have continuity. This is the controller ground.
How do these wires test?
Let's also check the resistance of the secondary magneto windings. Disconnect both spark plug wires. Hook one lead of your ohmmeter to a good ground. Test the plug wires one at a time. The left one should read 13,700 - 33,000 ohms, and the right one should read 11,500 - 27,000 ohms.
