GEM 8500 User Manual

www.gemu-group.com 19 / 24 GEMÜ 8500
14 Fault clearance
Error Error cause Troubleshooting
No function Power supply not OK Check power supply and connection with
product label
Solenoid coil faulty Check continuity, replace solenoid coil if
necessary
Operating pressure too high Check operating pressure, reduce if ne-
cessary
Control aperture contaminated Clean pilot solenoid valve, fit strainer in
front if necessary
Armature blocked Clean the armature and the bush
Manual override in position 1 Unlock the manual override as described
in chapter "Manual override"
Pilot solenoid valve leaking Main valve seat leaking Clean main valve seat
14 Fault clearance

GEM 8500 Specifications

General

Brand	GEM
Model	8500
Category	Control Unit
Language	English