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Most Recent Questions
Recent Question:
can I turn the generator off (using circuit breaker in house) if it has been running for a long time ?
Recent Question:
1st oil change before winter if less than 25 hrs run time
Recent Question:
Where and what kind of key does the enclosure use?
Recent Question:
What size and type of engine is used? (cc, hp Numbers please)
Recent Question:
Pls remind me how to determine how many hours unit has run.
Questions with Most Recent Answers
Question:
can I turn the generator off (using circuit breaker in house) if it has been running for a long time ?
Question:
1st oil change before winter if less than 25 hrs run time
Question:
Where and what kind of key does the enclosure use?
Question:
What size and type of engine is used? (cc, hp Numbers please)
Question:
Pls remind me how to determine how many hours unit has run.

Customer questions and answers for
Generac Power Systems 20kW-6730

In many cases, the 20 kW Guardian Series—the most popular Generac home standby generator—can back up your entire home, including multiple air conditioners.
Customer questions and answers:
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Customer questions and answers for Generac Power Systems 20kW-6730

Question

Where and what kind of key does the enclosure use?

I need to get one. The installer misplace the keys
State: AL - Alabama
Age: Over 65
asked 5 days ago
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Ace
Birmingham AL
on 20kW-6730
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To request a set of replacement keys, please contact us directly at 888-GENERAC (436-3722) with the serial number of your personal unit.
answered 3 days ago
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GeneracPowerSystems02
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Question

What size line do I need for my 20kw generator that is only 18ft from the tank

State: MI - Michigan
Age: 45-54
asked 1 week, 4 days ago
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Steve
Sawyer
on 20kW-6730
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Line size is dependent upon your personal fuel feed and local code requirements. To ensure that you are utilizing the line size required for your personal configuration, we would recommend working with your local fuel line installer and/or an independent authorized dealer in your local area. To locate an independent authorized dealer near you, use your postal code for searching purposes here: http://www.generac.com/dealer-locat...
answered 1 week, 3 days ago
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GeneracPowerSystems02
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Question

How do I fix an 1902 error code (under voltage)?

I have a Centurion 11kw, Mod 0064401. Yesterday we lost power & the generator engaged properly the power came back and our generator disengaged. There was second outage & our generator did not engage.
State: MA - Massachusetts
Age: Over 65
asked 4 weeks, 1 day ago
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Bill
100 Fire Road 12
on 20kW-6730
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Unfortunately, we are unable to determine the exact cause of your unit’s issues via online correspondence, as the “Undervoltage” alarm can arise in the wake of numerous causes. However, we can identify the fact that this particular alarm is commonly caused by a bad air filter (bad air filters would need to be replaced), or insufficient fuel pressure. To have the fuel pressure appropriately verified, we would recommend contacting your local gas company. If all of these recommended checks can be confirmed, and issues persist, we would then recommend contacting an independent authorized service provider in your local area for diagnostic and servicing work. To locate an independent authorized service provider closest to you, please use your postal code for searching purposes via the following link: http://www.generac.com/dealer-locat... . If you have any other comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 4 weeks, 1 day ago
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GeneracPowerSystems02
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Question

What size electrical pipe do I run for a whole house generator?

asked 1 month, 1 week ago
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Vince
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Setup requirements will vary from one configuration to the next. To ensure that your backup power system is properly installed in accordance with any local codes that apply to your area, we recommend working with an independent authorized dealer in your area. To schedule a FREE in-home assessment with an authorized dealer near you, click here: https://www.generac.com/for-homeown...
answered 1 month ago
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GeneracPowerSystems02
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Question

full time operation

we re building new maintenance shed on our ranch... Looking at 20kwlpg unit for running it full time rather than power company hookup.... Suggestions please/
State: TX - Texas
Age: Over 65
asked 1 month, 1 week ago
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Oz
quinlan
on 20kW-6730
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answer 1
Please know that Generac's Guardian Series automatic standby generators are designed to provide backup power to an existing utility power source; they are not designed to provide prime power. Moreover, using the generator as a primary power source will immediately void the product's warranty. If you are interested in learning more about an applicable power source for an off-grid configuration, however, we would recommend considering our EcoGen Series automatic standby generators. To learn more about these products, and to determine which model best fits your backup power needs, we would recommend contacting an independent authorized dealer in your local area. To locate an independent authorized dealer near you, use your postal code for searching purposes here: http://www.generac.com/dealer-locat... . If you have any other comments, questions or concerns, do not hesitate to contact us directly at 888-GENERAC (436-3722); we are available 24/7.
answered 1 month, 1 week ago
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GeneracPowerSystems02
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Question

can i use mobile one syntetic 5w-30 in my generac 20kw generator

asked 1 month, 2 weeks ago
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chuckb
on 20kW-6730
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Yes, per the product's owner's manual, SAE 30, 10W-30 or 5W-30 synthetic oil are all applicable for use. If you have any other product-related inquiries, feel free to contact us directly at 888-GENERAC (436-3722).
answered 1 month, 2 weeks ago
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GeneracPowerSystems02
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Question

if the T1 wire is not connected on the generador, the battery is been charged by the battery charger?

The control on the transfer switch is powered by T1, and the battery charger and the transfer switch is operating ok. But i did not wire the T1 from the transfer switch to the generator. So, I have an alarm "charger missing AC".

On this condition, the battery is still been charged? Or the control on the generator interrupts the charging?

I mean, in the mean time while the T1 is been wired, battery is been charged? and i only hava an alarm?
State: FL - Florida
Age: 45-54
asked 1 month, 3 weeks ago
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by
mfornerino
on 20kW-6730
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answer 1
No, as the T1 control wire is the battery charging wire, it needs to be connected for the battery to be charged.
answered 1 month, 3 weeks ago
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GeneracPowerSystems02
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Question

error code 1061

My generator quit in the middle of a power outage and displayed an error code of 1061. The generator was installed in the fall of 2015, has about 15 hours total time.
State: NM - New Mexico
Age: 55-64
asked 2 months, 2 weeks ago
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trish
Mimbres
on 20kW-6730
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As multiple factors can initiate the onset of an error code on your unit's control panel, we are unable to determine the cause of this particular alarm via online correspondence. To ensure that the cause of your current error code is determined and serviced properly, we would recommend contacting an independent authorized service provider in your local area. Please know that these trained professionals are capable of providing any warranty coverage that applies to your personal unit. To locate an independent authorized service provider closest to you, use your postal code for searching purposes via the following link: http://www.generac.com/dealer-locat...
answered 2 months, 1 week ago
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GeneracPowerSystems02
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Question

How do you determine the hours on the generator?

Age: 55-64
asked 2 months, 3 weeks ago
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by
Gunnar
St. Thomas
on 20kW-6730
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answer 1
As these units are manufactured to order, please contact us directly at 888-GENERAC (436-3722) with your product's serial number so that we can locate your product's documentation and provide you with a definitive response.
answered 2 months, 3 weeks ago
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GeneracPowerSystems02
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Question

Im pouring a cement pad for my 20 kw generator where exactly is the gas and electrical connections located

State: IN - Indiana
Age: 45-54
asked 3 months ago
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Jim
Culver
on 20kW-6730
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answer 1
For a complete breakdown of the product's components and feature locations, we would recommend referring to the unit's owner's manual and associated documentation. If you no longer have access to this information, please know that duplicate copies can be obtained online via the following link: http://www.generac.com/service-supp...
answered 3 months ago
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GeneracPowerSystems02
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Question

ERROR 1902 UnderVoltage

Hi. I have 20K Guardian Series installed on 6/2014 was running fine on exercise and actual power outages until last 2/2016. It runs for 5-10 seconds then STOPS. Displays error 1902 Undervoltage. Please advice what is wrong and how to fix. Thank you.
asked 3 months ago
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RZ
St. Croix US Virgin Islands
on 20kW-6730
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answer 1
The "Undervoltage" alarm is commonly caused by a bad air filter (bad air filters would need to be replaced), or insufficient fuel pressure. To have the fuel pressure appropriately verified, we would recommend contacting your local gas company. If all of these recommended checks can be confirmed, and issues persist, we would then recommend contacting an independent authorized service provider in your local are for diagnostic work. Once an applicable remedy has been provided, you can put the unit into the OFF position and press ENTER to clear the existing alarm. To locate an independent authorized service provider closest to you, please use your postal code for searching purposes via the following link: http://www.generac.com/dealer-locat... . If you have any other comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722). We hope you find this information to be helpful.
answered 3 months ago
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GeneracPowerSystems02
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Question

20k generac

does this model have a bleed off valve for nat gas
State: PA - Pennsylvania
Age: Over 65
asked 3 months ago
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Rich
greensburg
on 20kW-6730
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answer 1
So that we can ensure that we are understanding your question correctly, please contact us directly at 888-GENERAC (436-3722); we would like to discuss your inquiry in further detail.
answered 3 months ago
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GeneracPowerSystems02
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Question

THIRD OIL CHANGE QUESTION 20 KW NATURAL GAS GENER

tHE FIRST 2 OIL CHANGES THE OIL WAS CLEAR,BUT THE THIRD OIL CHANGE THE OIL WAS A LIGHT BROWN..do i have a problem ?
State: NJ - New Jersey
Age: Over 65
asked 3 months, 1 week ago
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by
super
west berlin
on 20kW-6730
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answer 1
The oil appearing milky would most likely be from condensation, mainly from changing climates. The best way to avoid water getting into the oil is to check the dipstick often and at the first sign of any foaming or milky color to the oil start and run the engine for a while to flash off the moisture. If the oil continues to look “light brown”, change it after running the engine long enough to get it good and hot before draining. Using synthetic motor oil should also give the moving parts of your engine better lubrication and keep condensation in the crankcase to a minimum. Additionally, please note that we would recommend contacting an independent authorized service provider in your local area for diagnostic work, should issues persist, or if you believe that something is wrong with your personal generator. To locate an independent authorized service provider closest to you, please use your postal code for searching purposes via the following link: http://www.generac.com/dealer-locat... . If you have any other questions please do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 3 months, 1 week ago
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GeneracPowerSystems02
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Question

clearance required for all sides of generator

asked 3 months, 2 weeks ago
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by
fella
on 20kW-6730
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answer 1
Per the NFPA 37, 8-22kw air-cooled generators feature the following minimum clearance requirements: The unit should be placed 5 feet from any combustible surface or structure; the unit should be placed 5 feet from any wall opening (i.e. door, window, etc.); the front of the unit, along with the two ventilating sides should be placed 3 feet from any surface or structure including trees, bushes, or shrubs. The back of the unit can be placed as close as 18” from any surface or structure. This is due to the fact that our enclosures are complaint with Clause (2) of Section 4.1.4 of NFPA 37. Also, please note that these recommended clearance requirements are superseded by local codes. We would recommend working with your local inspector and an independent authorized dealer to ensure that your unit is installed at a proper distance. Also, this information is provided in Section 3 of your unit’s installation guidelines, entitled “Site Selection and Preparation”. To locate your documentation online, please use your product’s model or serial number for searching purposes via the following link: http://www.generac.com/service-supp... . To locate an independent authorized dealer in your area, use your postal code for searching purposes here: http://www.generac.com/dealer-locat... . If you have any other product-related inquiries, please contact us directly at 888-GENERAC (436-3722).
answered 3 months, 2 weeks ago
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GeneracPowerSystems02
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Question

Generator runs in auto mode even if there is power at the house

The Generator (20kw Model - 0062440) - came on at 5:30 am but we still had power to the house. I cycled the big auto switch on the house to off then on... generator kept running. Stopped the Generator manually, reset the side breakers on the Generator itself, then put into auto,,, still detected that it needs to be running (no power at the house) but we do still have power, never lost it it seems. Problem with the Generator or Transfer switch? I called the power company at first thinking it was a localized outage, but they called right back (while it was still running) and said they saw power to the Meter. Installed in 2013. I read in 14KW forum that a bad fuse may make the generator think it is detecting a power loss? What can I check on my own? Thanks
Mike
State: VA - Virginia
asked 3 months, 2 weeks ago
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MM
Locust Grove
on 20kW-6730
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answer 1
We would recommend having an independent authorized service provider in your local area check to see if the N1 or N2 wiring has come loose between your generator and automatic transfer switch. Otherwise, either one of the N1 or N2 fuses may have blown, as these are the two wires that monitor utility power. To locate an independent authorized service provider closest to you, use your postal code for searching purposes here: http://www.generac.com/dealer-locat...
answered 3 months, 2 weeks ago
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GeneracPowerSystems02
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Question

Model no:

What's the difference between a 6729& 6730 model?
State: WI - Wisconsin
Age: 55-64
asked 4 months ago
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Rick
Greenleaf
on 20kW-6730
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answer 1
While model numbers 6729 and 6730 feature the same 20kW Guardian Series automatic standby generator, model number 6729 comes with a whole house transfer switch included.
answered 3 months, 4 weeks ago
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GeneracPowerSystems02
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Question

How do I get the generator disconnected to move to a new house

I am moving and want to know who disconnects yhe generator and how s oes it cost
State: MI - Michigan
asked 4 months, 3 weeks ago
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Michele
on 20kW-6730
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answer 1
As an automatic standby generator is installed in accordance with your local codes and electrical configuration of your home, we would recommend contacting the independent authorized dealer that installed your unit to ensure that it is properly removed from service. Please know that as the product's manufacturer, we do not dictate the cost of services provided by an independent party in your local area. If you have any other comments, questions or concerns, do not hesitate to contact us directly at 888-GENERAC (436-3722).
answered 4 months, 3 weeks ago
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GeneracPowerSystems02
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Question

I recently installed my 22kw generac. Met with gas company to install bigger meter. He said there would be 5lbs pressure coming out of his meter and i

would need to install 2 $100 house ounce regulators. My fathers has 5.5 ounce pressure and no regulators. Can't I request that he just lower the pressure coming out of meter? I have 160' of flexible 1 1/2 pipe.
State: OK - Oklahoma
Age: 55-64
asked 4 months, 3 weeks ago
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chris
lookeba in the country
on 20kW-6730
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answer 1
Unfortunately, we do not provide gas line recommendations, as the feed provided to each home can vary from one installation to the next. To ensure that your unit is provided the appropriate amount of pressure for the optimal operation of your personal system, we would recommend working directly with your local fuel line provider. If you have any questions pertaining to a product's specifications, features or operational capabilities, however, please do not hesitate to contact us directly at 888-GENERAC (436-3722) with the serial number of the product in question.
answered 4 months, 3 weeks ago
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GeneracPowerSystems02
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Question

My battery was replaced and now it will not come on

State: LA - Louisiana
Age: 45-54
asked 3 months, 3 weeks ago
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by
Donald
White Castle
on 20kW-6730
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answer 1
If your unit is unable to operate, we would recommend referring to the unit's control panel. The control panel's display should provide an error code that alludes to why the unit is not operating. Once you are able to acquire this information, give us a call at 888-GENERAC (436-3722) for further assistance.
answered 3 months, 3 weeks ago
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GeneracPowerSystems02
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Question

how to clear alarms on an older model 20kw standby generator

When I put my generator in manual it starts up perfectly. It will run for about 10 seconds and trips. One LED light comes on which signifies two different alarms. They are: low coolant level and high temp alarm. I put coolant in it and ran it three more times in manual. It still trips and throws the same alarm. How do I clear the alarm so that it runs right again. My home is ten years old so im assuming the generator is around the same age.
State: MS - Mississippi
Age: 25-34
asked 5 months, 1 week ago
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Bunch
gluckstadt
on 20kW-6730
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answer 1
The process for clearing alarms can vary from one model to the next. If you have an older model, as you have alluded, please contact us directly at 888-GENERAC (436-3722), with the serial number of your unit, so that we can provide you with a definitive response regarding the process required for clearing an alarm on your generator.
answered 5 months, 1 week ago
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GeneracPowerSystems02
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