27
Troubleshooting:
Fault
Cause
Remedy
No power on the operator panel
Missing main power supply or
switched off main switch (at the
blowers end plate).
Interrupted circuit breaker at the
blowers frequency converter
Check that the main power supply is con-
nected and that the main switch is on.
Reconnect the circuit breaker (see sec-
tion "Electrical installation")
The blower does not start when
the "Start" button is pushed
The blower has been switched off
on the main switch and switched on
again too fast.
"Remote" is chosen on the operator
panel.
Operator
has not access to oper-
ate the blower.
Digital input signal External Stop
NC not chosen and / or corre-
spondingly connected in terminal
row X30.
The blowers frequency converter
damaged due to overvoltage
caused by loose wiring or vibra-
tions transmitted to the blower from
the ground or the connected pipe
system.
If an external start / stop switch
is installed, loop may be missing
between terminals 1 and 5
Reset error with "Reset Fault" on the
operator panel.
Login as
Tech
or
Admin
and set to "Lo-
cal" (if needed).
Login as
Tech
or
Admin
and set correct
access for
Operator
(if needed).
Connect stop to terminal X30 or check
connection. Chose the correct digital
input on the operator panel.
Replace frequency converter and tighten
wiring connections securely. Check for
vibrations and correct according to sec-
tion "Mounting".
Install loop between terminals 1 and 5 in
terminal row X30
The blower does not stop when
the "Stop" button is pushed
"Remote" is chosen on the operator
panel.
Operator
has not access to oper-
ate the blower
Login as
Tech
or
Admin
and set to "Lo-
cal" (if needed).
Login as
Tech
or
Admin
and set correct
access for
Operator
(if needed)
The blower does not start or
stop when operated from the
digital input
"Local" is chosen on the operator
panel.
The digital input "External Stop NC"
has not been configured correctly
Login as
Tech
or
Admin
and set to "Re-
mote" (if needed).
Ensure that the circuit is closed
The blower does not respond to
pressing the "↓" and "↑" buttons
on the operator panel
"Remote" is chosen on the operator
panel.
Operator
has not access to oper-
ate the blower
Login as
Tech
or
Admin
and set to "Lo-
cal" (if needed).
Login as
Tech
or
Admin
and set correct
access for
Operator
(if needed)
