Question about Watts Onan Portable Generator - 4000 , Model# 5500

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Wiring problem on a 5GF-LDE SILENT TYPE GENERATOR

I have a 5gf-lde generator(china origin, silent type) and recently replaced the fuel tank guage in it which involved removing the casing,Whilst doing this I wragged off a few wires of its electric control circuit board (IT IS NOT A DIGITAL READOUT TYPE, IT IS ANALOG AND THIS CIRCUIT BOARD IS FASTENED ON TO THE REAR OF THE VOLTMETER) namely a red positive wire coming from the 12volt side from the alternator,a yellow wire going to the oil preasure switch which stops the machine from running if the oil level goes to low and a brown wire which is connected to an led which lights up when the oil switch is active giving a visual indication of low oil.Can you help in resolving just where the wires should be reconnected to

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We hold parts for your Generator and have a whole Help Center dedicated to helping people fix their Portable Generators. If the answer is not there, we have Generator Engineers who can help. Check it out on our site. https://www.generatorguru.com/5gf-lde/

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wiring problem on a 5GF-LDE SILENT TYPE GENERATOR - image-2fwsrbehqcya13uxwt41l5dc-5-0.jpg

Posted on Aug 19, 2019

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6ya6ya

6ya staff

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SOURCE:

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Posted on Jan 02, 2017

Sheldon Dedek

  • 909 Answers

SOURCE: Onan Marquis Gold 5500 on

A1 controller could be suspect, http://www.flightsystems.com/ can get you going with board cheaper than OEM, last longer too.

Does the generator shut down immediately after you let go of the start switch? If so, you are looking at oil pressure / level fault. Check oil level and sending unit. If generator continues to run for a few seconds and then shuts down, that is due to no or low AC voltage being produced and shutdown occurs. Shutdown for AC usually indicates an open winding or damaged voltage regulator.

Posted on Aug 25, 2009

Anonymous

  • 21 Answers

SOURCE: where do the four wires coming out of the right

Hello

Is it a 220 volt generator? If so then the green is ground, the white is neutral and the other two are hot wires. Do you have more information?

John

Posted on Jan 07, 2010

lindsay836

lindsay836

  • 677 Answers

SOURCE: I have a 1988 honey motorhome with a 5.0 cck onan

It is a wire to let the charging system know what voltage/amps, is being devoloped. It has a diode to check the voltage one way.
Take a volt meter. Put it on OHMS. You should read only one way, if not replace it.

Posted on Mar 02, 2010

kel1guy2002

Kelly

  • 3740 Answers

SOURCE: My Onan Emerald Advantage 5500

Hi and welcome to FixYa, I am Kelly

I can probably help you figure out where the wire goes if I had an idea of where this wire originates.

There are 2 wires connected to the side of the fuel pump I think either one of those 2 wires is the one your missing or the


Here is the start sequence for just the starter:

Sequence of Events:

Battery + pos) at PI-6, Battery - (neg) at P1-8.

Operator pushes start button at AI.

B+ from PI-2 to start solenoid

(S terminal).

Solenoid contacts close send B+ to
starter.

This is the ignition:

Sequence of Events:

Operator pushes start button on AI.

Safeties are bypassed.

B+ from P3-3 to ignition coil.

Breaker points open/close path to

ground.

High voltage jumps spark plug gap.
B+ supplied to fuel pump from PI-2.

This is the ignition / running:

Sequence of Events:

I. Engine starts, oil pressure causes

LOPKO to close sending ground

signal to P3-4.

AC from generator B1 -B2 winding

enter board at P1-1 and P1-7.

These two inputs cause the control

to switch from start mode to run
mode.

Starter automatically disengages.

Field flash automatically removed.

Start switch released.

Safeties enabled.

Bl-B2 powers choke heater (Hl).

Fuel Pump power now from P3-6
through R7.

The fuel pump power for run is from P3 pin 6 though resistor R7 to the fuel pump. THIS may be the wire that was damaged. However... a broken wire from the low oil pressure switch (located under the oil filter covered by metal cover) or... no AC output sensed on the control board due to a broken wire to P1-1 or P1-7 it will never switch to the run mode.

Your going to have to do pin to termination point readings one wire at a time. More in next post... (30 minutes or less)

Kelly

Posted on Aug 01, 2011

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Did this get replaced recently?
Fuel level senders typically work by changing the resistance (and therefore current) depending on the fuel level determined by the position of the float mechanism in the tank. Since the guage you are describing is working exactly opposit to as intended, is it possible that an incorrect sender was installed, or, if there are 2 terminals on the guage, have the wires been switched so that the current is going through the wrong way?

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If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

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