Generac centurion 8kw rpm sensor

If you have some fundamental electrical training/experience.

Undervoltage 1902
ALARM
Fault is displayed when both zero crosses are missing from the controller's input for 1.5 seconds or more. Could be a faulty excitation winding, zero cross circuit, loose wiring, or field boost hardware problem. Same applies here, v1.12 or later firmware should be installed.

hi
replace the rpm sensor

RPM Sense loss means that the generator controller hasn't received a valid signal from the ignition coils for 3 seconds of attempting to start. Probably a dead or low battery or bad ignition coil. Replace the battery and try again. Call dealer if problem persist.

to reset any shutdown code on units 2010 and newer, switch generator to 'off', press 'enter'. this will clear the code, then you can attempt to start by switching to manual.

do you think that you might have installed the power source for the gas shut off solinoid incorrectly ???

all lights blinking means that your exercise time is not set

Switch generator to off. Remove 7.5A fuse. Disconnect Negative (-) battery terminal first and then Positive terminal (+). slide battery out the front (may be a tight fit) and install the new battery reversing removal steps. Connect (+) first and (-) last. Reinstall 7.5A fuse and switch to manual to start and test run.

Manuals can be downloaded from this webpage but the model number you quote doesn't give any results ?

http://www.generac.com/Service/ManualSearch/

Sounds like Generator mode switch should be "ON".

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