Control Valve Trouble Shooting
Err - 1002 = Control valve
motor ran too short and was
unable to find the next cycle
position and stalled
Foreign material is lodged in control valve
Open up Control Valve and pull out piston
assembly and Seal and Spacer Stack
Assembly for inspection. Press NEXT and
REGEN buttons at the same time for 3
seconds to resynchronize software with
Mechanical binding
Check Piston and Seal and Spacer Stack
Assembly, check Reduction Gears, check
Drive Bracket and Main Drive Gear
Interface. Press NEXT and REGEN
buttons at the same time for 3 seconds to
resynchronize software with piston.
Main Drive Gear too tight
Loosen Main Drive Gear. Press NEXT and
REGEN buttons at the same time for 3
seconds to resynchronize software with
Improper voltage being delivered to Circuit
Board
Verify that proper voltage is being
supplied. Press NEXT and REGEN
buttons at the same time for 3 seconds to
resynchronize software with piston.
Err - 1003 = Control valve
motor ran too long and was
unable to find the next cycle
position
Motor failure during a regeneration
Check motor connections then Press
NEXT and REGEN buttons at the same
time for 3 seconds to resynchronize
Foreign matter built up on Piston and Seal
and Spacer Stack Assemblies creating
friction and drag enough to time out Motor
Replace Piston and Seal and Spacer
Stack Assemblies. Press NEXT and
REGEN buttons at the same time for 3
seconds to resynchronize software with
Drive Bracket not snapped in properly and
out enough that reduction gears and drive
gear do not interface
Snap Drive Bracket in properly then Press
NEXT and REGEN buttons at the same
time for 3 seconds to resynchronize
Err - 1004 = Control valve
motor ran too long and timed
out trying to reach home
Drive Bracket not snapped in properly and
out enough that reduction gears and drive
gear do not interface
Snap Drive Bracket in properly then Press
NEXT and REGEN buttons at the same
time for 3 seconds to resynchronize
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