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Where is the relay switch for generac exl8000

Motor running but no power being produced, is there a relay switch I can't see?

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6ya6ya
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Posted on Jan 02, 2017

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CarlGehrke
  • 169 Answers

SOURCE: 20KW Guardian Generac does not produce 12 volts to run engine

The problem is that the printed circuit board inside the generator draws a little current from the battery even when the generator is not running. Over the course of a few days this can make the battery weak enough to be unable to get recharged by the built in running charger which results in not enough power to run the electronic governor on the generator. Usually the spark plugs will work even with a fairly low battery.

Most of the Generac generators come with a built in trickle charger that runs off of the transfer switch load terminals. If your built in charger isn't doing the job it's either broken or you have the wrong sort of battery installed in the generator.

Regards,
Carl

Posted on Jan 26, 2009

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mamicheddy
  • 79 Answers

SOURCE: Generac portable generator doesn't produce power

Remove front cover on the genset and you will see the brushes and rings. Clean the rings if black with emory cloth and inspect brushes. Flash the fields by apply a 12V battery to the brushes. the brush closest to you or the bearing is connected to the positive side of battery and the back brush is negative. You have to do this with genset running. You should notice your voltage climb up to over 50Vac maybe even over 100Vac. Make sure to use rubber gloves when flashing fields and keep hands away from rotating parts. if voltage does increase when flashing the the voltage regulator is shot. If voltage does not climb then you will need a new genset or generator end.

Posted on May 15, 2009

  • 37 Answers

SOURCE: I have a generac generator 19kv propane powered

Pull the no 1 and no 4 wires off the voltage regulator and apply 12 vdc from the battery to them + to no 4 - to no 1. start unit and see if its putting out at least 60 VAC. If it is then you have a bad voltage regulator. If itis not then you have to investigate the brushes, stator, and rotor.

Posted on Nov 18, 2009

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Generac Guardian 15kW Generator


That sounds just about right, if the relay contacts get welded together it sometimes takes out the driver on the printed circuit board. As you found out, 12vdc from 23 to 194 makes the transfer switch move to the Generator position, relay not energized makes the ATS move to the Normal position.

You can make a nice test function by installing a 10 amp contact switch in series with either the N1 or N2 terminals. When the switch is open the generator thinks the Normal power has failed.

Regards,
Carl

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20KW Guardian Generac does not produce 12 volts to run engine


The problem is that the printed circuit board inside the generator draws a little current from the battery even when the generator is not running. Over the course of a few days this can make the battery weak enough to be unable to get recharged by the built in running charger which results in not enough power to run the electronic governor on the generator. Usually the spark plugs will work even with a fairly low battery.

Most of the Generac generators come with a built in trickle charger that runs off of the transfer switch load terminals. If your built in charger isn't doing the job it's either broken or you have the wrong sort of battery installed in the generator.

Regards,
Carl

Jan 11, 2009 | Electrical Supplies

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