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GEMÜ 549 eSyDrive
17 Troubleshooting
17 Troubleshooting
Error
Possible cause
Troubleshooting
The product is leaking downstream (does
not close or does not close fully)
Operating pressure too high
Operate the product with operating pres-
sure specified in datasheet
Valve body leaking or damaged
Check valve body for potential damage,
replace valve body if necessary
The product does not close or does not
close fully
The actuator design is not suitable for the
operating conditions
Use an actuator that is designed for the
operating conditions
Foreign matter in the product
Remove and clean the product
Voltage is not connected
Connect voltage
The product does not open or does not
open fully
Actuator defective
Replace the actuator
Operating pressure too high
Operate the product with operating pres-
sure specified in datasheet
Foreign matter in the product
Remove and clean the product
The actuator design is not suitable for the
operating conditions
Use an actuator that is designed for the
operating conditions
Voltage is not connected
Connect voltage
Cable ends incorrectly wired
Wire cable ends correctly
The product is leaking between actuator
and valve body
Bolting between valve body and actuator
loose
Tighten bolting between valve body and
actuator
Actuator/valve body damaged
Replace actuator/valve body
The product is leaking between actuator
flange and valve body
Mounting parts loose
Retighten mounting parts
Valve body / actuator damaged
Replace valve body/actuator
Valve body of the GEMÜ product is leak-
ing
Valve body of the GEMÜ product is faulty
or corroded
Check valve body of the GEMÜ product
for potential damage, replace valve body
if necessary
Body of the GEMÜ product is leaking
Incorrect installation
Check installation of valve body in piping
Valve body connection to piping leaking Incorrect installation
Check installation of valve body in piping
LED 1 is not lit
No initialisation
Initialise valve
Supply voltage too low
Check supply voltage
LED 1 lights up yellow
Set value signal outside of the area
Check set value signal
Temperature error
Check temperature
LED 1 flashes yellow
Actual value signal outside of the area
Check actual value signal
LED 1 and 2 are flashing yellow and red
simultaneously
No calibration
Contact GEMÜ
Internal error
Contact GEMÜ
