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16 Troubleshooting
16 Troubleshooting
16.1 LED error message
Function
Program-
No stroke
ming error
Stroke <
min. stroke
After sensor
error
Sensor error OPEN posi-
tion
CLOSED po-
sition
Pneumatic
OPEN posi-
fault
tion
CLOSED po-
sition
Mid posi-
tion
Supply voltage too low
Internal error
16.2 Troubleshooting
Error
Programming error
No mounting kit
no stroke
available
Process valve
faulty
Programming error
Minimum stroke
stroke < min. stroke
was not reached
(e.g. due to stroke
limiter)
Shut off diaphragm
compressed too
much (diaphragm
size 8)
Programming error
The sensor range
after sensor error
was exceeded dur-
ing the program-
ming procedure.
Currently the pro-
cess valve is in the
valid sensor range.
GEMÜ 1242
CLOSED
ERROR
OPEN / CLOSED flash alternately
OPEN / CLOSED flash simultan-
eously
Error cause
Troubleshooting
Check the mount-
ing kit, re-pro-
gramme
Replace process
valve, re-pro-
gramme
Ensure minimum
stroke, re-pro-
gramme
Ensure correct
compression of the
shut off diaphragm,
re-programme
Check the mount-
ing kit, re-pro-
gramme. Note the
maximum stroke
(see "Technical
data")
Error
Sensor error
CLOSED or OPEN
position
OPEN
Sensor error
CLOSED position
Supply voltage too
low
Internal error
The spring locks
during installation
17 Inspection and maintenance
Exceptional maintenance work!
▶ Damage to the GEMÜ product.
Any maintenance work and repairs not described in these
●
operating instructions must not be performed without
consulting the manufacturer first.
The operator must carry out regular visual examination of the
products depending on the operating conditions and the po-
tential danger in order to prevent leakage and damage.
1. Have servicing and maintenance work performed by
trained personnel.
2. Wear appropriate protective gear as specified in plant op-
erator's guidelines.
3. Shut off plant or plant component.
4. Secure plant or plant component against recommission-
ing.
5. Depressurize the plant or plant component.
6. Actuate products which are always in the same position
four times a year.
7. Check whether the housing cover is closed.
8. Carry out inspection and maintenance for products in the
potentially explosive area to DIN EN 60079-17.
17.1 Spare parts
No spare parts are available for this product. If it is faulty,
please return it to GEMÜ for repair.
36 / 41
Error cause
Troubleshooting
Sensor limit ex-
Check the mount-
ceeded
ing kit, re-pro-
gramme. Note the
maximum stroke
(see "Technical
data")
Sensor limit in
Check the mount-
CLOSED position
ing kit, re-pro-
exceeded
gramme. Note the
maximum stroke
(see "Technical
data")
Supply voltage < 18
Ensure supply
V DC
voltage (see "Tech-
nical data")
Memory error
Reprogram,if pro-
gramming cannot
be carried out, send
the product back
Mounting kit too
Contact GEMÜ
long
NOTICE
www.gemu-group.com
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