Krom Schroder BCU 46 Series Operating Instructions Manual page 19

E
? The display blinks and indicates
! Faulty actuation of the air valve.
! Voltage is applied to the air valve outputs
(65 – 67).
• Check the wiring and ensure that the voltage
outputs and inputs have the same polarity and
are not reversed.
! Fuse F3 defective.
• Replace fuse F3.
! An internal device error occurred.
• Replace the power module.
• Remove the unit and return it to the manufacturer
for inspection.
E
? The display blinks and indicates
! Bus module and control unit are incompatible.
• Check the bus system and PLC for compatibility.
! Bus module does not support the selected func-
tion.
• Check the setting of parameter A075.
E
? The display blinks and indicates
! Voltage is applied to the device outputs.
• Check the wiring and ensure that the voltage
outputs and inputs have the same polarity and
are not reversed.
! Fuses defective.
• Replace the fuses.
! An internal device error occurred.
• Replace the power module.
• Remove the unit and return it to the manufacturer
for inspection.
E 4 0
? The display blinks and indicates
! The gas solenoid valve V1 is leaking.
• Check the gas solenoid valve V1.
! The gas pressure switch DGp
test has been set incorrectly.
• Check the inlet pressure.
• Set DGp /2 to the correct inlet pressure.
u
• Check the wiring.
! The test pressure between V1 and V2 has not
decreased.
• Check the installation.
! The test period is too long.
3 4
E 34 .
3 5
E 35 .
3 6
E 36 .
E 40 .
/2 for the tightness
u
• Check parameter A056 (Measurement time V
and change using BCSoft.
• If the fault cannot be remedied by doing this,
remove the unit and return it to the manufacturer
for inspection.
? The display blinks and indicates
! The downstream gas solenoid valve (V2, V3 or
V4) is leaking.
• Check the downstream solenoid valve.
! The gas pressure switch DGp
test has been set incorrectly.
• Check the inlet pressure.
• Set DGp
/2 to the correct pressure.
u
• Check the wiring.
! The test period is too long.
• Check parameter A056 (Measurement time V
and change using BCSoft.
• If the fault cannot be remedied by doing this,
remove the unit and return it to the manufacturer
for inspection.
? The display blinks and indicates
! Faulty pressure switch signal.
• Check the wiring and setting of the pressure
switch/gas valve.
? The display blinks and indicates
! Interruption of signal at the "Safety interlock/
Controller enable/Emergency stop" input (ter-
minal 35).
• Check voltage supply to terminal 35.
? The display blinks and indicates
! The BCU is permanently reset by remote reset.
• Check remote reset activation (default termi-
nal = 2 or bus).
• To reset the unit, only apply voltage to the remote
reset terminal for approx. 1 second.
GB-19
E 4 1
E 41
/2 for the tightness
u
E 4 4
E 44
5 1
51
5 2
52
)
p1
.
)
p1
.
.
.