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Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Sven and Kristi on February 10, 2018, 06:40:56 pm

Title: generator mystery
Post by: Sven and Kristi on February 10, 2018, 06:40:56 pm
Yesterday, Kristi asked me if the generator was on (we were in the house).  My coach was parked at the side of the house, plugged in with the generator running.  This might not seem disturbing, except it has been 10-7 (inoperable) for a few months.  Here's a synopsis of events:
1- A few months ago I attempted to start the gen. from the interior as part of its regular exercise.  It struggled, but would not continue running.  I checked the usual fluid levels.  I tried from the gen. panel - same result.  I came back to it an hour later and there was no response at all (battery fully charged).  No sounds, nothing.  Since I had other projects I was doing, I put it on "the list".
2- A month ago, I brought it into Temecula Valley RV for some body work; nothing else.
3- On our return, after setting up, I thought I would try the generator again, and I pushed the start switch from the interior.  It did nothing, no surprise.
4- About two hours later, Kristi heard it running.
5- Today, I started it from the gen. panel.  The preheat went on and it started up immediately.
Any ideas? 
Title: Re: generator mystery
Post by: Old phart phred on February 10, 2018, 06:53:38 pm
Bad interior start switch? Female generator?
Title: Re: generator mystery
Post by: fkjohns6083 on February 10, 2018, 07:15:14 pm
Loose (or corroded) wiring in the start circuit.  Could be affected by temperature changes.  Check the control side and the power side.  Clean and tighten every thing.  I've seen a lot or terminals that have loosened over time and they are very hard to find.  Grab, shake and pull and if it is there you will find it.  Have a great day  ----  Fritz
Title: Re: generator mystery
Post by: joeszeidel on February 10, 2018, 07:40:26 pm
I like the suggestion of checking connections. The ground connection is always suspect.
Title: Re: generator mystery
Post by: Old phart phred on February 10, 2018, 08:42:50 pm
If the Genny autostarts when the house batteries drop you might check your cord for power.
Title: Re: generator mystery
Post by: Sven and Kristi on February 10, 2018, 11:30:58 pm
The shore power connection is good, showing 119-120 volts and the batteries were charged.  When it came on, it seemed like it was a long delay from when I pushed the start switch.  It was not from a drop in the battery voltage.
Title: Re: generator mystery
Post by: TulsaTrent on February 11, 2018, 03:52:00 am
When it came on, it seemed like it was a long delay from when I pushed the start switch.
That long delay is the preheat stage. Yours is probably similar to mine; no preheat light on the dash. (there is a preheat light on the generator itself.) My recollection is there is no feedback during the preheat stage; it just suddenly starts ( or not).
 
Trent
Title: Re: generator mystery
Post by: RvTrvlr on February 11, 2018, 08:53:36 am
Mine also stopped starting, and I figured it needed a new starter or wiring looked at. As ive been using it a lot with hookups, i didnt immediately bother troubleshooting.

I'm now boondocking and brought a portable quiet inverter generator to top up the batteries, but decided to try the generator and to my surprise, its fired right up perfectly four times over the last two weeks.
Title: Re: generator mystery
Post by: Sven and Kristi on February 11, 2018, 05:09:36 pm
That long delay is the preheat stage. Yours is probably similar to mine; no preheat light on the dash. (there is a preheat light on the generator itself.) My recollection is there is no feedback during the preheat stage; it just suddenly starts ( or not).
 
Trent
I'm used to the preheat, which is only about 10 seconds.  This came on about an hour after I pushed the switch.  With ambient temps around 80 here, preheat isn't much of an issue.