Tom17
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Re: Generator and Electricity Issue
You're welcome. Hope it helps. Try 3 seconds and go from there. Your pushing start after it's running may be the best work around for you. If it's still inconsistent, install the kit for a permanent fix. You weren't doing it wrong, I was doing the same thing. One would expect start to mean start and produce power. Spent hours going through the trouble shooting steps in the service manual multiple times, then stumbled on the fix at ziller. Just an undocumented feature with these Generac units.486Views0likes0CommentsRe: Generator and Electricity Issue
The exciter current is only applied when the start button is pushed. When cold you probably have to hold it longer to start and the current has a chance to build the field for power generation. When warm the engine starts quickly, you release the button, and there hasn't been a long enough current for the field to build so no power. Pushing the button again gives it the additional current to build the field. Generac has a kit consisting of a diode, resistor and associated wiring that can be installed to provide a constant exciter current regardless of how long the start button is pushed. I installed one in mine and have not had an issue since with power coming up. Here's where I bought mine and also a link that has a link to PDF instructions: http://www.apelectric.com/0H07850SRV-Generac-Guardian-field-boost-uplift-k-p/0h07850srv.htm http://www.zillerelectric.com/forums/showthread.php?t=1378486Views0likes0CommentsRe: Generator runs but no power?
I also have a generac. Sometimes when started it would power up and others not. Installed an exciter kit and now it comes up every time. The standard exciter circuit only applies power to the field when cranking the starter. The kit makes it apply current all the time to ensure the field has built up. Try holding the starter button down for a couple more seconds after it starts to let the field come up. May save a trip to the shop.498Views0likes0CommentsRe: Generac Genny Problem Need Info
I also had 5 to 7 volts AC at the transfer switch but that is not what provides the exciter current. Normally not much exciter current is needed as a residual magnetic field provides enough induced current but sometimes it loses some of the residual field and needs a dc current applied to excite and build the magnetic field. If you start the generator and simply continue to hold the start button for 3 to 5 seconds it allows the circuit from the voltage regulator to provide the dc current needed. I decided to install the boost kit to get a reliable field boost regardless of how long I pushed the start button. Try simply holding the start button for a few seconds after the engine starts. Quote from manual: The Controller Circuit Board houses a field boost diode and resistor that are not part of the automatic choke circuit. These two components are part of a “field boost” circuit (Figure 2.4). During engine cranking only, a positive DC (battery) voltage is delivered through a diode, resistor, brushes, slip rings, and the generator rotor. Application of this voltage to the rotor “flashes the field” whenever it is started. Flashing of the field each time the generator starts makes sure that a sufficiently strong magnetic field is available to produce “pickup” voltage in the stator windings.218Views0likes0CommentsRe: Generac Genny Problem Need Info
I had the same problem on my QP65 and it turns out the field boost current is only applied while the start button is pushed. You can try holding the button a little longer when starting to let the current build or install a field boost kit (0H07850SRV) which provides a current source independent of the start button being depressed. Have not had a problem with 120VAC coming up since the install. Here's where I bought mine and also a link that has a link to PDF instructions: http://www.apelectric.com/0H07850SRV-Generac-Guardian-field-boost-uplift-k-p/0h07850srv.htm http://www.zillerelectric.com/forums/showthread.php?t=1378218Views0likes0Comments
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