Question about Generac Electrical Supplies

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I have an 8KW Generac gas generator. We had a power outage and it didn't auto-start. ALARM - Overcrank msg. Started it manually. Weekly exercises are fine (It's cold and snowy here .. relevant?)

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join the forums there. this is not the dave turner in nh is it??? works for web??

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  • Generac Master
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By "gas" I assume you mean gasoline? Overcrank means too many starter revolutions without engine run which agrees with no auto-start.


If gasoline, suggest you drain the fuel bowl and some of the tank(pint or so). Capture fuel into container. Then transfer to a transparent/glass container and let set a few minutes. Then look for a water line(fuel is lighter than water and will separate). Line high in jar means lots of water. If any sign of water and you need to clear the fuel system and tank. Then completely fill with FRESH fuel from a trusted source. Or if refueling too far, if you only use fuel from top of container that has sat for a few minutes, the water is on bottom and fuel on top.

Posted on Mar 18, 2019

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6 Suggested Answers

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Posted on Jan 02, 2017

CarlGehrke
  • 169 Answers

SOURCE: 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

Posted on Jan 26, 2009

CarlGehrke
  • 169 Answers

SOURCE: 10kw Generac shut down overspeed

Make sure that the throttle linkage is all there and not damaged/misadjusted, then get a manometer and check your inlet gas pressure. Gas pressure should be 8 inches of water column and stay there running or not.

Carl

Posted on Apr 06, 2009

mydogisk
  • 50 Answers

SOURCE: Guardian generac 10kw model 5502 does not output correct voltage

the instructions says the voltage regulator is automatic/digital. when you check the voltage is there any load on the generator? if applying load to the generator doesn't help, you can manually change the motor speed where the governor connects to the carborator, but it may change the frequency, but the regulator may fix it

Posted on Apr 13, 2009

  • 26 Answers

SOURCE: Generac 43903 standby Generator overspeed indicator on starting

I have a generator that did the same thing. It would start and then stop within a few seconds. The more expensive generators have an oil level safety switch to prevent the engine from burning up. There is usually a wire connecting to the switch on the outside of the engine near the oil fill hole. Remove this wire and try to start the generator. If it runs without a problem then it is the switch. You need to remove the switch and take it apart carefully and clean it. There is a small float inside the assembly. When the oil runs low the float allows the switch to short to ground which kills the spark to the spark plug. Hope that helps.

Bob Janelli

I’m happy to help further over the phone at https://www.6ya.com/expert/bob_62dfa2f81bb55288

Posted on Oct 01, 2009

Testimonial: "This is good information in the event that the low oil switch is part of the problem."

  • 10 Answers

SOURCE: I have a 17kw generac generator that will run

I have the 18KW model and was told that most alarms relate to a low battery. Make sure the battery charger in the Transfer Switch is properly feeding the battery or hook up a mobil battery charger to the battery and see if the alarm goes away. Good Luck.

Posted on Oct 12, 2009

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I have a natural gas generac 8kw it was running fine now it will not run found that out after the last power outage pull the plug looks good found that it will not spark at the plug


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Generac 20,000kW Standby generator doesn't start shows message STOP ALARM OVERCRANKED


Overcrank means that it tried to start and couldn't. It will go through 5 crank cycles and then stop with this alarm. Switch to off, hit enter to clear fault and then try to start in manual. Check to make sure you have fuel and pressure is 11 to 14 in WC.

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How do i reset overcrank alarm on my generac 0058750 generator


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Overcrank error message


The 'overcrank' error simply means it tried to start but never actually started. It cranked for an extended period. Check the fuel and starting issues you would normally check to start the engine.

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

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1 Answer

Start runs shutsdown


Typically caused by the fuel line (LP or Natural Gas) having a lot of air in it. Was your generator just installed, or was there any work done to the gas line of the building / generator? Consult local gas contractor / propane dealer / gas company for assistance in purging the fuel line.

A low battery can also cause this as well as the generator is not able to come up to starting speed quick enough. Try placing a stand alone battery charger on the generator and charge the battery. Also check the air filter as well.

OverCrank condition occurs when generator tries to start itself, or be manually started, and the starter spends too much time turning.

This can also indicate failure of the control board. This will need the expertise of generac technician. Call 1-888-GENERAC (1-888-436-3722)
M-F 7am-6pm Central

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Quietsource 25kw Staring problem In auto mode or manual


Hi,
Sounds like the you have no spark since when you force the engine to crank it never fires. The low battery light come on because the 2 sec of cranking lets the voltage get lower than the alarm threshold.
I'd connect a spark tester to either of the plugs and try a manual start, if you see sparks replace the plugs, if you get no sparks then you've got to troubleshoot the ignition modules and the kill wire that comes from them.

Regards,
Carl

Feb 23, 2009 | Generac Electrical Supplies

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