Manual

Rev. 0040807014 1614 Page 2-35
Operating and Installation Instructions
CONA
®
-control
9.3 Fault indications on the power supply
10.0 Dismantling the valve and the housing
Green
"DC OK"
LED
Meaning Description Corrective measure
Lit Output voltage > 27 V Output voltage and current OK The power supply is functioning
correctly
Blinking Output voltage < 27 V Power supply in operation but
- Fault at load
- Current consumption > IBOOST
- Output short-circuited
- Disconnect and exchange the
defective load
- Reduce the current consumption,
either by connecting an
additional power supply or by
disconnecting any loads that are
not required
- Remove the short-circuit
Off No voltage at output Power supply not in operation
because
- No mains voltage present
- Primary fuse has tripped
- Device is defective
ATTENTION !
Check the following points carefully:
- The piping system must be pressureless.
- The medium must be cool.
- The plant must be drained.