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Kohler 5ecd generator giving high battery voltage alarm

Posted by Chuck budavich on

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4 Related Answers

CarlGehrke

Carl Gehrke

  • 169 Answers

SOURCE: kohler 12kw generator starts but shuts down after 3sec

Your gas pressure is too low and you may not have a large enough supply pipe. You need at least 10 inches of water column with the engine running to operate an LP vapor fueled engine. Because the engine is starving for fuel, its governor opens the throttle to WOT (so it goes to high revs) but there isn't any fuel to make horsepower with so the output voltage falls and the undervoltage alarm trips.

Carl

Posted on Dec 03, 2008

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John Trevino

  • 1420 Answers

SOURCE: High voltage low cycles

I worked at a tool rental center while going to college and learned how to service generators. Most appliances/tools require 50 to 60 cycles at 110 to 120 v. Your engine was designed to give maximum horsepower at 3600 rpm. Adjust the engine speed to produce 60 cycles and the engine should be at 3600 rpm and producing around 120v max. (Some special generators were designed to produce 230v 180 cycles, check manual) If your generator incorporates capacitors check them for at least 95% of printed uf value. They should be removed from circuit for testing. If there are two caps and one is weak make sure the new cap reads close to value of remaining cap. Finally there is usually a voltage regulator that varies the power to the armature magnet trying to maintain steady voltage depending on amp draw and engine condition. This regulator has no adjustment and is pass or fail type of item. Good luck, enjoy

Posted on Dec 18, 2008

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Fred Yearian

  • 5603 Answers

SOURCE: kohler confidant 4 generator service manual and wiring diagram

First thing is to check oil level as low oil pressure will shut it down.

Posted on Aug 11, 2009

consaka

Bryan Fullerton

  • 661 Answers

SOURCE: Kohler Model 12RES LP gas generator starts

Sounds like a short in one of the windings to me. Can you verify that the engine rpm is not exceeding specs? If you can modify the engine speed Id say slow it down and see what the voltage read is.

Posted on Jul 22, 2010

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1 Answer

Kohler 6eod


Under voltage would be low output voltage from the generator power head. Verify that the motor is funning at full speed to check the output voltage.

Low battery is telling you that the starting battery has low voltage. This could be because the battery is bad or that the alternator is not charging the battery

Jan 28, 2014 | Kohler Electrical Supplies

1 Answer

8.5 kohler generator battery dies often


Check the battery charger whether an external one is installed or the optional one ion the transfer switch. Measure the voltage on the battery it should be at least 13.8V if it is only 12V then the charger is suspect. Also if it is an external charger plugged into a receptacle make sure that the 120V receptacle is hot (GFI's) tend to trip in a storm

Sep 18, 2013 | Kohler 12 kW Emergency Power System -...

1 Answer

14kw kohler propane generator-sometimes does not start, put battery jumper on and it starts. Battery is new, but had the same problem with the old battery.


The battery charger is defective, as you can start it by jumping it off means it is just a low battery. without it running measure battery voltage, it should be around 12V then plug the charger back in, it should climb to around 13.8B with a good battery. If not have the float charger checked.

Jan 25, 2013 | Kohler 14resa 14kw Home Emergency Backup...

1 Answer

Getting NO power from the MR2 160/2 Mecc Alte Spa altenator stator. Generator repairman said he didn't find anything wrong using his voltmeter. Measured 6 vac out. I tested caps and they seem good....


There are a few more components to check in the system. From the information provided this is not a Kohler generator as Kohler makes all their own AC alternators under 350KW, seems you may have just a Kohler engine (probably a CH25). Cannot find any info on the voltage regulator which leads me to believe it may be integrated into the main controller. Curious to know who the manufacturer is. If the capacitors are good, try checking the diodes. A volt/ohm meter with a diode check will do. Voltage reading on one side and nothing on the other. If you have no access to a diode check feature, try reading it through a battery NOT SHORTED TO BATTERY hook a meter to a battery and put the diode between one of the leads to the positive, one way will read voltage the other will read open, no voltage, or OL. Look for any fuses or breakers blown / tripped. 6 VAC on the output is about residual voltage meaning voltage the alternator makes without any help from a voltage regulator or field voltage. This usually means the alternator / rotor windings are still good. This alternator is brushless so you could seperately excite this unit via a 12V battery through your field. Look for your exciter field winding, it should have some kind of label on it saying F+ and F-, apply 12V here momentarily on + & - respectively with the unit running and you should see your output voltage spike. This tests the alternator. If this tests ok, then check to make sure your wiring / fuses from the alternator to the controller or voltage regulator (voltage sensing leads) are ok. If all these check ok, it is likely you have a bad voltage regulator.

Jul 15, 2011 | Kohler Electrical Supplies

2 Answers

Kohler 5E generator on my boat got wet there is no power at the 120 V. distribution panel now. Any ideas on where to start troubleshooting ?


  1. First you must clean it all, especialy the generator, windings, AVR etc. if it was wet with sea water (better do it with fresh water or electro-clean, than other liquids). Then you should dry it well (with a hot blower) for about, but not less than 24 hours, before starting.
  2. If you already started it wet, or it got wet while running, you may have some parts burned, with low insulation of cables, windings etc. Check the AVR, rings and brushes (if any) and other electronic boards for visualy burned elements or check the semiconductor elements (diodes and transistors) for proper qualities.
  3. You should check the gen. windings insulation resistence to hull (gen. iron) [all stator and rotor windings]. It should be more than 100 kOhm in order to let you start the generator motor.
  4. When dry and clean, with no burned elements you can start the engine. If it reaches its normal speed - measure the voltage on generator terminals, if it is OK check the connections (breakers, fuses) to the distribution panel. If it is very low under 30 V AC, the problem may be in AVR (Auto Voltage Reg. - Field DC supply)
  5. If the voltage is under 10 V AC, you may need to recharge the magnetic field with a 12 V battery connected shortly to field terminals - +/- respected.
If you fulfil these instructions and you need more help, please ask as an answer to this solution or on my e-mail: [email protected]
Please give some information about your generator: is it 5ECD, 5EKD or some other - then give some more details about it.

Jul 26, 2010 | Kohler Electrical Supplies

1 Answer

Kohler Model 12RES LP gas generator starts normally but immediately shuts down with over-voltage alarm. Control panel replaced.


Sounds like a short in one of the windings to me. Can you verify that the engine rpm is not exceeding specs? If you can modify the engine speed Id say slow it down and see what the voltage read is.

Jul 22, 2010 | Kohler 12 kW Emergency Power System -...

1 Answer

Kohler generator drains battery while running and then shuts down with error code oc


The rpm sensing in the control module is missing or bad.
Answer these questions for more details:
  1. Does your generator output normal voltage?
  2. Is the starter turning after the Gen is running?
  3. Is the charging of the battery connected?

Jun 20, 2010 | Kohler Electrical Supplies

1 Answer

How much voltage should i get from the b+ on the voltage regulator on a kohler ch25 motor


This is the terminal from / to the battery with engine off it should read static battery voltage, with the engine running it should read anywhere from 13.6 to 14.2 volts

Sep 09, 2009 | Kohler CH25 PA-CH730-0040 Command Gasoline...

8 Answers

Kohler 12kw generator starts but shuts down after 3sec


Your gas pressure is too low and you may not have a large enough supply pipe. You need at least 10 inches of water column with the engine running to operate an LP vapor fueled engine. Because the engine is starving for fuel, its governor opens the throttle to WOT (so it goes to high revs) but there isn't any fuel to make horsepower with so the output voltage falls and the undervoltage alarm trips.

Carl

Oct 09, 2008 | Kohler 12 kW Emergency Power System -...

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