Quicksilver 8k (voltAGE FLUCTUATES UNDER LOAD)

[Out2win4U]

380 Aft Cabin. QS-8.0G. 750hrs . Regular maintenance completed. Voltage regulator and Fuel pump replaced 2yr. Water pump impeller replace 2months,Oil/heat sensors check out. Governor checks out 1860 RPM read at the #1 plug no load. Voltage 125 no load. No issues When unit is under light load. Cabin Air trigers voltage/amp flutuation and board circuit breaker trips. No noticeable engine RPM change. Cycle engine OFF and ON and power returns. Day latter, trouble returns. Where should I look next Stator windings? PC boards?

 

[PlayDate]

380 Aft Cabin. QS-8.0G. 750hrs . Regular maintenance completed. Voltage regulator and Fuel pump replaced 2yr. Water pump impeller replace 2months,Oil/heat sensors check out. Governor checks out 1860 RPM read at the #1 plug no load. Voltage 125 no load. No issues When unit is under light load. Cabin Air trigers voltage/amp flutuation and board circuit breaker trips. No noticeable engine RPM change. Cycle engine OFF and ON and power returns. Day latter, trouble returns. Where should I look next Stator windings? PC boards?

A few questions:

1) Is the "board circuit breaker" the one on the electrical distribution panel or the breaker on the generator?

2) Does your AC work correctly on shore power?

The problem of course is the startup draw of the AC unit. The older units pull serious amps on startup which only gets worse with age. If it is the distribution panel that trips....the AC unit is pulling over it's rated capacity which is either caused by the AC unit or that the generator is not producing enough voltage to handle the draw.

Since you have everything else dialed in, I would check the amp draw on the AC unit first with an induction meter. Since you can't get it to go on the generator, I would check the amps on the shore power feed. Shore power handles high draws better but the it will give us a point of reference.

-John

 

[Out2win4U]

The circuit breaker that trips is the one on the Gen (I'm assuming). The AC's do work on shore power (althoug they do get warm when all three are on). Last weekend the fault occured with just the converter on and some AC lights. Again cycled the unit ON are OFF waited 5 minutes and returned home with no further issues. I'm not sure what else was being powered while underway as I was relegated to the bridge for the rest of the night on the way home. Is there a way to test the voltage regulator? or the generator circuit braker?

 

[Out2win4U]

Hi PlayDate
I have been busy trying to pay my end of year Taxes so the Community organizers in chief can distribute. Well I spent last night playing with the unit. The problems manifiest even under minor load (light) I goes high side whith the Water Heater. Amp fluctuates Voltage Peg's. electricaldoctor Mentions a diaode Pack and AVR test in another post. I have also heard of a Circuit board issue. Where do I start?