i have a sp3420 that will work fine for weeks then wrench light comes on and cuts everything off then for a few day it will continue teven after a few key cycles. no codes at all i have service tool and all limit switches are working i've tested all over the mast cables for continuity even with platform raised slighty and me jumpiing up and down to see if i lost continuity. all wires tested good. no flash codes on any of the access modules please help.
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Did this ever get resolved?
I have many SP3400 series. I had this problem and ended up having to replace the Traction Card which is mounted very top left in the motor compartment behind the distribution board.
Clean all card edge connectors with DeOxit contact cleaner. It is a miracle in a can. Used to service 42 SPs in humid warehouse. Corrosion was a real issue causing daily calls. Started using DeOxit on all connections and dropped 80% of service calls. Miracle in a can. Available at Crown dealers. Some Radio Shacks. Google it!
ive check all wiring to distribution panel this truck runs 8+ hours a day and this code frequency keeps going up.
check all the plugs and connections at the distribution board
the plug connectors should have little segments for each wire not one large molded plug
there was a TSB for this
from memory truck would shut down and just litle orange led on display would flash
i did have an rr3000 that would throw wrench with no code
ended up being blown globe in dome light arcing
good luck
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