Kohler 5KW EC 72 error code. Where is the Starter Relay located?

JLAS

Hey Guys, 

I have been running the generator with no problems until last wee.  The genset would run and then stop suddenly and show EC72. I think is the power relay.  Does anyone know where is it located and how to get to it?

Thanks in advanced.

Black_Diamond

Sure it is not overheating?  Low oil?  Very intolerant of the latter. 

JLAS

Black_Diamond said:

Sure it is not overheating?  Low oil?  Very intolerant of the latter. 

I don't think so, as now it does not even start.  According to other forums, the EC 72 error is the starter relay, but I have no idea to where is located. I already have the relay.  At times, I am not sure the marine generators are worth it... :-)

Handymans342

I have never had a problem with mine, ever.

JLAS

Problem fix.  It was the starter relay.  $8 part and running smoothly.

Dream_Inn

Handymans342 said:

I have never had a problem with mine, ever.

You actually have to use it to have a problem with it!   - I have almost 1100 hours on mine!

LaRea

Got my first EC72 fault on Day 1 of a ten-day.  Any suggestions that don't involve ordering parts?

aero3113

@LaRea , check all of the wiring and grounds. I read that some people got that fault when a wire was shorted or a ground not making good contact.

LaRea

What had happened was:  We left the dock with genny running fine.  Decided to run it on our way down-river to keep ice and cabin cold.  At some point in the first hour, it shut down.  When we reached our destination, I saw the EC72 code, and it would not start. 

I poked around for a while looking for loose wires, found none.  Luckily, this is the only night we'll be on the hook for this trip.   

aero3113

@LaRea , found this in a thread on the SR forum.

LaRea

I resolved this issue.  It was a blown fuse on the front panel of the generator (F6, Voltage Regulator and Battery Charging Alternator).  

When the genny died, I gave all of the fuses a visible inspection, and they all looked fine.  Today I checked each one with a multi-meter.  F6 looked normal, but failed continuity.  I replaced it and -- problem gone.  

aero3113

Nice easy fix!! But why did it blow?

LaRea

Indeed.  If it stays fixed, I'm guessing faulty fuse.  If the fuse blows again, I go back to the drawing board.  

cme4brain

JLAS said:

Hey Guys, 

I have been running the generator with no problems until last wee.  The genset would run and then stop suddenly and show EC72. I think is the power relay.  Does anyone know where is it located and how to get to it?

Thanks in advanced.

where did you get the starter relay and where was it located?  I have the exact same problem.

randbo

When I try to start Gen it makes clicking noises and does nothing and error codes 72 EC72  what is the issue

aero3113

@randbo
Read this thread, it talks about the EC72 code.

aero3113

Just noticed He’s pretty close to @rando!! 😂

LaRea

@randbo welcome to the forum.  Check the F6 fuse as referenced above.  Also, check the fuse holders and make sure none of them are broken, as described here:

https://rinkerboats.vanillacommunities.com/discussion/7899/generator-acting-flakey-diy-instructions-to-replace-the-fuse-holders