Foretravel Owner's Forum For owners and Fans of Foretravel Motorcoaches April 24, 2024 ...

Genny Overvoltage

March 13, 2019, 10:57:59 am

Progressive EMS reports 137v overvoltage periodically which prevents genny power into coach. Until next week am I safe to use the Progressive bypass?

Quote Selected

Re: Genny Overvoltage

Reply #1 – March 13, 2019, 12:28:58 pm

Don't have a direct answer Randy,so the generator is putting out 137 volts?

Quote Selected

Re: Genny Overvoltage

Reply #2 – March 13, 2019, 12:42:33 pm

Yes...137 v.

Quote Selected

Re: Genny Overvoltage

Reply #3 – March 13, 2019, 01:03:28 pm

Randy,

I would sure not use it if you have verified that that is the actual voltage (vs gauge problem).  Could damage appliances.

Quote Selected

Re: Genny Overvoltage

Reply #4 – March 13, 2019, 01:05:52 pm

What Brett said. Don't use it till it's fixed. My guess is you generator's voltage regulator is bad.

Quote Selected

Re: Genny Overvoltage

Reply #5 – March 13, 2019, 01:22:22 pm

Yep to reply 3 & 4. Mine would jump from high 130s to 160 in a flash. Progressive saved my bacon. Bad regulator in my case.

Quote Selected

Re: Genny Overvoltage

Reply #6 – March 13, 2019, 02:36:03 pm

I would definitely avoid using it until I could verify the actual voltage and correct any problem  that exists. Not worth taking any chances!

Quote Selected

Re: Genny Overvoltage

Reply #7 – March 13, 2019, 05:03:40 pm

Randy,
I believe we have similar coaches.  As stated earler I would not use it at that voltage.
I have the PPowertech with the 3 cyl. Isuzu, had to replace the voltage regulator last fall.  Powertech has them in stock.

Quote Selected

Re: Genny Overvoltage

Reply #8 – March 13, 2019, 05:58:21 pm

Gen is really putting out that high voltage and you are lucky to have your EMS wired after transfer switch, instead of the common before transfer switch. Just do without generator.

This is a normal symptom of a failing Power Tech generator voltage regulator, something that has happened to us and many others.

Recommend only using Power Tech supplied replacement voltage regulator. They need info from plate on 'generator puck end', not the plate info on the control box. Also need to know of brush or brushless.

A word of caution as several have had thousands of dollar damage and had the difficult job of replacing the heavy puck end, from not following the written instructions relating to wire connections.

Our model was just a plug swap, but other models need a wire swap.

Lots of Forum info on this specific topic....

Quote Selected

Re: Genny Overvoltage

Reply #9 – March 30, 2019, 03:59:33 pm

Fortunately our FT used the "plug n play" voltage regulator replacement board rather than needing the type that requires re-wiring.  $328.95 for the part and all is back to normal.

Quote Selected