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Old 03-13-2021, 04:28 PM   #1
TP7
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Cummins Onan QD 6k issues

Hi all. Iím new here.

Have a 2014 Thor Chateau Super C and having trouble with my Onan QD 6000. Itís priming itself (or clicking like itís trying to) without pushing the start button in. When it does this, I canít get it to stop by pushing the switch either way. Only way to stop it is to disconnect the positive lead to the genset.

It started doing this on a trip beginning of Feb when I travelled from Texas back home to Kansas and the cold weather and winter storms hit. It was a mess of a drive and everything was covered in ice. I figured maybe the fuel in the line had gelled, and waited for warmer weather. I did get it powered back up and started when the weather warmed up into the 60s. Ran it for an hour without issue. But today (45 and rainy) I noticed it was making the clicking sound again on its own. So I disconnected the power again. When I reconnected it, Iím now getting a ď33Ē fault code. I thought maybe it was an error because thereís no ď33Ē in my manual. I did hit stop on the switch after seeing the initial three blinks. It just keeps blinking in batches of three.

Have tried disconnecting the power several times and itís just throwing the error code. Canít get it to start.

Read somewhere that the 33 code could be an overheat but the generator hasnít started once today.

Anyone have any ideas?

Thanks!

Eric
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Old 03-13-2021, 07:05 PM   #2
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Welcome to the forum. I don't any answers for you, but I'm sure others will be able to help. I'm interested as I have an Onan 5.5kw genny. Have you considered calling a Cummins / Onan dealer?
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Old 03-13-2021, 07:57 PM   #3
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Thanks!

Iíll call on Monday. Am heading out on a trip Wednesday so I figured if I could get some ideas I might get it sorted before I leave.
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Old 03-13-2021, 08:01 PM   #4
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You've got a connection that is getting wet. There is a multi pin/wire plug, usually on the back of the generator (outside the generator). You need to check that connection, clean and seal it.
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Old 03-14-2021, 09:34 PM   #5
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Quote:
Originally Posted by Dutch Star Don View Post
You've got a connection that is getting wet. There is a multi pin/wire plug, usually on the back of the generator (outside the generator). You need to check that connection, clean and seal it.
Thanks for the tip. While I canít quite diagnose what the issue is, unplugging the remote harness made the genset operable again. Iíll need to dig in further after my trip but at least I can use the generator.
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Old 03-15-2021, 05:56 PM   #6
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Blow out that connection and add some dielectric grease to the connector. It will seal the connector and prevent moisture from getting in. You may also want to make sure the connector is protected from water (spray from the front wheels).

https://www.amazon.com/Stuf-STUF-Die...dDbGljaz10cnVl
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