Yes I have a lance truck camper, with a generac generator. The issue I'm having is sometimes, most times it will not shut off with the switch on the panel or the one on the actually generator. I actually have to turn the propane bottles off to get it to die. I did change the switch on the board inside the camper with no luck fixing the issue. Hopefully some one can point me I the correct direction, as to what might be going on. I'm a bit puzzled and google so far has not been much help. Thanks in advance for any light y'all can shed on this issue.

Do you know the model number? I looked at a couple Generac schematics. There are probably similarities across the model line up. They run a negative to the main switch and in the start position it sends that negative to terminal 17 on the board. To stop they use the same negative and send it to terminal 18 on the board. SO, we know that the start function works all the time because the same feed is common to start and stop. So we know the negative is always present. The same type of piggy back circuit is also on the engine or generator itself. It uses a negative to both start and stop the engine by sending the negative to the appropriate card terminal. It's extremly unlikely that both stop functions have failed in oth stop circuits. So what that tells us is that the problem would seem to be between the card and and the engine ignition module or coil. At worse it could be the card itself. That could be tested for by finding the negative out of the card and seeing if negative is present when either the main or the remote are in the stop position. My guess would be to check for a loose connection between the card and the ignition module. This circuit could have a harness coupler in it. Sometimes the flat blade or barrel type connectors can become loose and cause an intermittent problem such as you describe.I do not know your abilities or who you may have work on this issue but DO not use any 12 positive jumpers in the ignition circuit. The ignition system works by applying a ground to the ignition module. Power will fry it. Again we need your model number but this is my best guess with just using some Generac model similarities.

Hope you can come up with a schematic. Not a permanent solution, by any means, but just to get it to shut down you may try closing the choke. I have had similar problems with small engines and used this until I could get repairs.

It's a impact-34lp. I've been just turning the propane bottles of and killing it that way, when the switch isn't. I'm pretty mechanical incline, but I'm not very up to par on generators. I do think this is a wiring issue, or sum switch or mechanism not working properly. I'm just not real sure were to start. Thanks for all the help so far and hopefully with that model number, you maybe can pin point the issue a bit more. Hope to hear from y'all soon. Thanks again

I cant tell exactly which wiring diagram to use without the full model number. There should be a model number and serial number on an engine tag. Generac uses common wire numbers and methods across the product line. There appear to be 2 wiring/ignition systems used on the 34lp models.In this service manual, on page 91 you will see the start stop circuits. Locate the remote switch, main switch, wire 14, wire 18 and the negative that is common to both switches. I dont know if you have ever worked with this stuff before but to the new person they usually go cross eyed at first sight. Look it over several times and it will all pop out at you.On page 92 you will find system operation. This is an Impact 36generacWhen you push start, a negative is sent to the control card and a positive is then sent from the card to the ignition module and fuel valve. It remains there unless the card sees a negative from the low oil pressure or high temp switches.When you push stop, wire 18 sends a negative to the card and the card removes power from wire 14 and the ignition system stops. On one of the other wiring diagrams when doing the same things I just described, the stop function happens when the card sends a negative to the module and "grounds" the module/coil. I will post a link at the bottom for that schematic. Right now we will stay with the "powered" ignition schematic.So the 2 systems are common in the way the main switch and the remote switch are wired. Both systems send a negative to the card to tell it to stop. If you look at the schematic you will see that the main switch and the remote switch panel merely piggy back each other.What this is telling us so far is that we know we have a negative all the time at main switch and remote switch or we wouldn't be able to start the engine. Again, a negative is used to both start and stop the engine. We have it to start so we have it to stop it. The question is where did we lose the signal that goes to the card or is the card seeing the negative signal yet not processing it to either drop the positive for the one type of ign system or not ground the other type of ign system. Since neither switch will kill the engine we would first look for an open in wire 18 between the main switch and the pc board. Wire 18 should go to pin number 4 of the 10 pin connector.On page 3 of this link they show a whole list of specific model.On page 72 of this manual it does show a grounded type ignition system and a different control board. GenSO......look this stuff over and you will get the general idea of what we are going after. We have not nailed the exact schematic by complete model number but I would guess that it's like the top link np36.You can do a visual examination of your unit and see if there is a loose or broken wire from the main switch to the card but before we start probing any wires we need to know exactly which schematic to look at. The pins could be loose in the connector also.

Generac generator won't shut off with switch | Good Sam Community

azrving
Explorer
Jan 16, 2015
.
Truckguy2000
Explorer
Jan 16, 2015
It's a impact-34lp. I've been just turning the propane bottles of and killing it that way, when the switch isn't. I'm pretty mechanical incline, but I'm not very up to par on generators. I do think this is a wiring issue, or sum switch or mechanism not working properly. I'm just not real sure were to start. Thanks for all the help so far and hopefully with that model number, you maybe can pin point the issue a bit more. Hope to hear from y'all soon. Thanks again
mikestock
Explorer
Jan 16, 2015
Hope you can come up with a schematic.

Not a permanent solution, by any means, but just to get it to shut down you may try closing the choke. I have had similar problems with small engines and used this until I could get repairs.
azrving
Explorer
Jan 16, 2015
Do you know the model number? I looked at a couple Generac schematics. There are probably similarities across the model line up. They run a negative to the main switch and in the start position it sends that negative to terminal 17 on the board. To stop they use the same negative and send it to terminal 18 on the board. SO, we know that the start function works all the time because the same feed is common to start and stop. So we know the negative is always present.

The same type of piggy back circuit is also on the engine or generator itself. It uses a negative to both start and stop the engine by sending the negative to the appropriate card terminal. It's extremly unlikely that both stop functions have failed in oth stop circuits. So what that tells us is that the problem would seem to be between the card and and the engine ignition module or coil. At worse it could be the card itself. That could be tested for by finding the negative out of the card and seeing if negative is present when either the main or the remote are in the stop position.

My guess would be to check for a loose connection between the card and the ignition module.
This circuit could have a harness coupler in it. Sometimes the flat blade or barrel type connectors can become loose and cause an intermittent problem such as you describe.

I do not know your abilities or who you may have work on this issue but DO not use any 12 positive jumpers in the ignition circuit. The ignition system works by applying a ground to the ignition module. Power will fry it. Again we need your model number but this is my best guess with just using some Generac model similarities.

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