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808cool
31-08-2011, 03:32 AM
The CB-2 breaker which powers microprocessor keeps tripping.Breaker and processor was replaced problem still there.Any suggestions appreciated.
Emmett
31-08-2011, 04:23 PM
More information would be helpful, perhaps a print. However if you have replace the breaker and the processor then it must be in the harness wiring, something shorted to ground.
808cool
01-09-2011, 05:09 AM
Found out the MV wire to the modulation valve is reading 20 VDC looked in print it should be 12-16 VDC.Disconnected modulation connector and CB-2 didnt trip.Ohm reading on modulation coil 7.7ohms coil is okay.Checked voltage on processor to Mod valve and found 20VDC.Not sure the cause of higher voltage.Also jumped another wire 14VDC to feed MV circuit and breaker didnt trip.I think the higher DC voltage is causing breaker to trip.