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Topic: Non auto start power tech turning on itself (Read 401 times) previous topic - next topic

Non auto start power tech turning on itself

My u280 has a 10kw power tech that has developed a bit of a kind of its own. It starts and runs well on the second try and shuts off ok but now for the third time I have come back to the motor home to find the green generator light on the switch panel illuminated and the generator fuel pump is running and its logging hours. The only way I get it to shut off is to start it up and shut it down again?  Anybody got a wiring diagram or a suggestion? 
Toby a 94 u280
Cummins 8.3
6 speed Allison
Exhaust brake


Adopted by Derek and Annabelle

Re: Non auto start power tech turning on itself

Reply #1 –
Does it have an auto start switch? And is it turned on?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Non auto start power tech turning on itself

Reply #2 –
I wasn't told it had auto start and up until now it had never done so. Also no mystery switches around
Toby a 94 u280
Cummins 8.3
6 speed Allison
Exhaust brake


Adopted by Derek and Annabelle

Re: Non auto start power tech turning on itself

Reply #3 –
Hi Toby and others,

Are you sure the generator wasn't set to auto-start on a previous occasion and you shut it off early or tried to do so. My generator will restart by itself under those conditions.

Jim

2002 U320
Jim Frerichs
2002 U320 42'

Re: Non auto start power tech turning on itself

Reply #4 –
Derek if my 2001 was doing that I would look at the latching relay inside the control box on the generator its white in color and they do funny things when they go bad. But I don't know if your setup is the same. As long as you don't auto start.
2001 U320 40' #5884
WTFE 4010 IMG_2198.JPG

Re: Non auto start power tech turning on itself

Reply #5 –
Another possible culprit is the oil pressure switch(or switches).  They are often used to feed the power to hour meters on diesels.  I am speaking generally; I don't know how your generator is wired.  The oil pressure switch on my 6V92 stuck in the closed position and the hour meter kept running with the engine shut down.  I only discovered it because it made the transmission control panel "N" button stay illuminated even with the ignition off.
John Fitzgerald
1991 U300 (SAI) Side Aisle Island Bed 40'
Detroit 6V92 with Allison Retarder
Meridian (Boise), Idaho

Re: Non auto start power tech turning on itself

Reply #6 –
Could be a malfunctioning preheat switch, where the switch does not cleanly spring return to center-off position.  Pull center wire off the back of the switch to diagnose.