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15kW Generac (04390-2) won't start Geo unit

Hello, folks. This is my first post here. I'm having trouble getting my geothermal system started on generator power. Below are some of the...
13 113 1576099245
Started by Jaredg in Generac Air Cooled Generators
20KW Transfer Switch Question

I just finished the installation of my 20KW with whole house transfer switch. During the installation though I accidentally broke off one of the Male...
4 73 1576072840
Started by tjcin in Generac Air Cooled Generators
4390 upgrade to whole house transfer switch

Posted here a few years ago about relocating our 4390 generator and appreciate all the guidance I received. The 4390 is still running well and I've...
27 427 1571675841
Started by ButchNH in Generac Automatic Transfer Switches
swapping engines

I'm looking for input from anyone who knows the 410 c.c. engines. I have a 58700 in the field that burns oil real bad, I have a 4389-3 that runs...
4 53 1576110448
Started by 78buckshot in Generac Air Cooled Generators
Flashing Over Speed LED

From the label on the generator: Item # 0043903 Serial 4076560 This is a 15/13kw generator fed with natural gas, installed by me in 2006. Last...
56 832 1522025211
Started by Goofy4TheWorld in Generac Air Cooled Generators
Hi guys, I was wondering if I could get any advice on a Nexes Control Board issue.

I have a 6K Ecogen, Model 58181 Lp gen as a back up gen to a solar off grid system. Upon arriving at camp this past weekend we discovered the system...
11 292 1575244994
Started by 10kray in Generac Air Cooled Generators
Evolution Missing AC Charger alarm option

Customer has a 30kw diesel with Evolution 2 controller that will be used to run a water pump manually that is in a remote location that has no AC...
10 112 1575662570
Started by Jacob375r in Generac Liquid Cooled Generators
rookie mistake

Hello forum and thank you for providing such a helpful resource. I have a 7kw generac standby generator purchased in 2011, model 58370, serial...
10 264 1575297046
Started by fiddlehead in Generac Air Cooled Generators
Under voltage again.

I replaced the ignition coil this spring on my 11kva nat gas generator. I was getting a under voltage error code. I adjusted the valves, replaced...
14 198 1575209816
Started by 3Phase in Generac Air Cooled Generators
transfer back to utility without interruption

Just installed a new 22kw unit, 70432, with a whole house transfer switch. The other day we had a power outage for about 5 hours. Everything worked...
10 208 1575538343
Started by traverse517 in Generac Air Cooled Generators
SMM Modules Failing

Hi all, I’ve had two SMM modules go bad over the past two months. Both on 30amp fuses, the entire panel protected by a surge protector. What could...
1 59 1575745619
Started by Daveh85 in Installation Talk
Rotor Stator mismatch

I have a new OA9064 rotor and OH8924 stator. Purchased for a vintage 04079-0 (10KW) generator. The rotor is too large to fit into the stator...
0 38 1575654156
Started by PR10Kp in Generac Generator Classifieds
Generac 5501 8 KW RPM error sensor Loss

Hello, I have a 5501 8 KW running on propane, 180 hours on clock. Found a RPM sensor loss code, Cleared code manual crank, started up, but sounded...
11 206 1573992017
Started by cic317 in Generac Air Cooled Generators
Need rotor/stator ohms value for Powermate 6250 (PM0545007.001)

I contacted PowerMate customer service with the above request, apparently PowerMate is part of Generac now. Got the following response from...
3 155 1574526091
Started by Jim Z in Generac Air Cooled Generators
6kW NG Guardian Plus issues

I bought and installed this unit over a dozen years ago, and it worked very reliability for years, till a major storm came thru and ripped up trees...
36 562 1571674614
Started by nfw01 in Generac Automatic Transfer Switches
Generac Genset w/ Fiat 1.6L engine - looking for parts

Hello guys, I have a 1997 Generac 15KW generator. It has the Fiat 1.6L engine that runs @ 1800 RPM. I am in desperate need a of a fan pulley...
9 121 1575408383
Started by mikroland in Generac Liquid Cooled Generators
Generac QT07068kvsn Engine Stall RPM

Having 2 issues with this generator. Have an H100 panel, First issue, I believe is a bad keypad as I am unable to scroll through any screens or...
6 154 1574093398
Started by Toader13 in Generac Liquid Cooled Generators
transferring

am getting 9.45 DC volts it's not getting the full 12dcv can to send the signal to the transferswitch can anyone tell me what's the cause
2 75 1575507962
Started by durell johnson in Generac Air Cooled Generators
Recommended spare parts for 2008 13KW

In have a 13KW NG 5242, circa 2008 (installed 2009). Has been a good reliable unit ever since the original install, save for the steel enclosure...
3 148 1573165106
Started by kdirk in Generac Air Cooled Generators
Valve stem sticking out

Recently, my 2012 10kW generator requires frequent (every 10-15 hours) valve adjustments because of bad starts. This is the exhaust valve in the back...
22 360 1573921750
Started by NorthGuy in Generac Air Cooled Generators
36 2.5 Mitsubishi

is it possible to eliminate the computer and convert the motor to mechanical Governor.
4 58 1575395915
Started by Kervyn in General
20kW model

I am confused. Generac still lists a 20kW model as item 7038, but everything I see on Ziller says "new model available". Looking at...
4 61 1575414867
Started by Goofy4TheWorld in Post up what you need, and we will track down the part number for you
Sorry I'm Late

SORRY I'M LATE !!!!
1 39 1575272453
Started by BillM in Offtopic Chat
Liquid Cooled Generac 40kw on LP Solid Overspeed LED After 9-10 Minutes on Exercise

Thanks for having this forum. I have a Liquid Cooled Generac Centurion 40kw with 3.9L that has served us well but after spending over $700 in the...
25 464 1566697707
Started by Greg in Generac Liquid Cooled Generators
Wifi generator monitor

Last year there was some talk of Generac coming out with a Wifi monitoring module for the older generators. Is there any word of when this will be...
1 114 1575129390
Started by malba2366 in Generac Air Cooled Generators

Ziller Forum

15kW Generac (04390-2) won't start Geo unit

20KW Transfer Switch Question

4390 upgrade to whole house transfer switch

swapping engines

Flashing Over Speed LED

Hi guys, I was wondering if I could get any advice on a Nexes Control Board issue.

Evolution Missing AC Charger alarm option

rookie mistake

Under voltage again.

transfer back to utility without interruption

SMM Modules Failing

Rotor Stator mismatch

Generac 5501 8 KW RPM error sensor Loss

Need rotor/stator ohms value for Powermate 6250 (PM0545007.001)

6kW NG Guardian Plus issues

Generac Genset w/ Fiat 1.6L engine - looking for parts

Generac QT07068kvsn Engine Stall RPM

transferring

Recommended spare parts for 2008 13KW

Valve stem sticking out

36 2.5 Mitsubishi

20kW model

Sorry I'm Late

Liquid Cooled Generac 40kw on LP Solid Overspeed LED After 9-10 Minutes on Exercise

Wifi generator monitor

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