Question about Watts Onan Portable Generator - 4000 , Model# 5500
Fault lite blinks & generator will not crank, How to clear? What causes it to fault in the 1st place
Over crank is failure to start, check fuel and ignition, why it isnt starting
Posted on Mar 01, 2015
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Posted on Jan 02, 2017
Check to see if you have power going into the switch. This can be done with a voltage meter at the terminals were the cable runs into the transfer switch. Do you have power at the generator plug?
Posted on Jan 15, 2010
SOURCE: Have Onan 3.6 KY propane
I am not familiar with your peice of equipment but from your description of the fault being Under Frequency it appears that generator governor is out of adjustment or the governor spring has brcome weak or broken and not allowing the engine to run at the correct speed to produce an output frequency within the allowable tolerance. Governor linkage could also be binding and not moving smoothly to respond properly to engine load conditions. Thoroughly check governor and throttle linkage for free and smooth operation and full range of movement.
Another cause could be that the engine is not getting sufficient fuel causing the governor to have the throttle wide open to try to get engine to run at its correctly governed speed but unable to do so because the engine is not developing enough horse power.
Posted on Jan 10, 2011
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