20 Most Recent Generac Guardian 20kW Model : 5875 Questions & Answers


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The current models of automatic standby generators will have LED indicator lights on the side compartment of the generator. A green LED light will indicate that the unit is in AUTO mode and is ready to run, or is running properly during a utility outage. The yellow LED light will indicate that maintenance is needed. The red LED will indicate either that the unit is switched to OFF or that there is an alarm detected. If a yellow or red LED are present, you will need to check the generator's control panel, as it will describe the type of maintenance needed or the alarm present. This information can be found in the owner's manual as well. You can find a copy of the owner's manual online by searching the model or serial number of the unit here
http://www.generac.com/service-support/product-support-lookup

Generac Guardian... | Answered on Jan 27, 2016


Your battery is dead..If the controller has a visible display your battery charger is most likely OK. Just put in a new Group 26R battery and set the time etc.

Generac Guardian... | Answered on Sep 07, 2014


If you have spark and compression and it not firing then you must not have fuel. the fuel is fed from the demand regulator thru the intake independent for each cylinder. Check the intake and make sure that the NG/LP pin is all the way to the NG side.

Generac Guardian... | Answered on Jul 22, 2014


THERE SHOULD BE A LOW OIL SENSOR ONTHE SIDE OF THE MOTOR PLEASE MAY CAUSE THE MOTOR NOT TO START YOU SHOULD BEABLE TO JUMPER THE TWO WIRES ON THE SENSOR AND SEE IF THE GENERATOR WILL START

Generac Guardian... | Answered on May 22, 2014


the largest contactor they make is 50 amps!

Generac Guardian... | Answered on Oct 25, 2013


Judy, Generac portable generator oil recommendations. Above 40°F, use SAE 30. Below 40°F and down to 10°F, use 10W-30. Below 10°F, use synthetic 5W-30. Oil should be changed after the first 8 hours of operation and every 200 hours of run time thereafter.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

http://www.generac.com/service-support/faqs/portable-generator-faqs

http://www.generac.com/service-support/faqs/home-backup-faqs

Best oil for Generac generator Lawn Mower and Small Engine Bob Is The Oil...

Generac Generator Oil Change

Generac... | Answered on Aug 27, 2020


Regarding the advice about "Flashing" a generator.
Do you people even know what that means?

What you are doing is messing with the capacitor that is part of the voltage conversion. Likely you are burning any shorts out of the capacitor. Has noting to do with the fields or coils or rectifier.

So if you are having issues then test the capacitor and replace it.
Try your flashing and see if you don't fry the rectifier.

It amazes me that people will blindly follow something they don't understand "hoping" that something good will happen.

But if a new generator is what you want then give your old one away instead of trashing it.

Generac... | Answered on May 13, 2020


During engine cranking and operation the controller receives AC
voltage and frequency signals from the ignition magneto via Wire
18. Should the speed exceed approximately 72 Hz (4320 RPM),
the controller's logic will de-energize the "run relay" (internal to
the controller). The relay contacts will open terminating engine
ignition and closing the fuel shutoff solenoid; the engine will
then shut down. This feature protects the engine and alternator
against damaging over speeds. During cranking the RPM signal
generated by the magnetos is used to terminate engine cranking.

Generac... | Answered on May 09, 2020


If you have a Generac Generator which fails to start during a power outage and gives an Error Code 1518 - RPM Sense Loss you can try and manually get the generator restarted very simply. ... The generator should wait 5 seconds and then try and auto-start up to 3 times.
https://www.justanswer.com/small-engine/bwmwi-working-generator-generac-protector-qs-38kw.html

Generac... | Answered on Mar 25, 2020


it is not producing voltage...

Generac Air Cooled Generators - Ziller Electric Inc ' Interactive Generac Generator Forum

https://www.google.com/search?q=generac+overspeed+fault&rlz=1C1OKWM_enUS816US816&oq=generac+overspeed+fault&aqs=chrome..69i57j0l6.5183j0j8&sourceid=chrome&ie=UTF-8

Generac... | Answered on Mar 11, 2020


i suspect you need a new controller. try asking here. read the rules before posting https://www.zillerstore.com/?forum=705132

Generac... | Answered on Dec 18, 2019


If you want to have a new diesel generator set in future, please visit the website for your reference: https://starlightgenerator.en.made-in-china.com/

Generac... | Answered on Dec 10, 2019

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