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12 Troubleshooting
Error
No function
Solenoid valve leaking
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Error cause
No power supply
Solenoid coil faulty
Operating pressure too high
Diaphragm faulty
Control aperture contaminated
Armature blocked
Main valve seat leaking
13 / 20
12 Troubleshooting
Troubleshooting
Check power supply and connection with
product label
Replace solenoid valve
Check operating pressure, reduce if ne-
cessary
Replace diaphragm
Clean solenoid valve, fit strainer in front if
necessary
Clean the armature and bush, replace the
armature if necessary
Clean main valve seat, replace diaphragm
if necessary
GEMÜ 8257
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