Error Codes - Schwank novoSchwank D 20S U Technical Manual

novoSchwank shape U

Error codes

If an error occurs, all gas valves are closed and the
lockout message output [230V] is activated and
the error code is stored internally and transmitted
by MODBUS to the central control unit
SchwankControl Touch.
The fan still runs for 30 seconds in the post-purge
time with maximum fan speed. After that, the
heater is completely switched off and locked
The lock can be reset by activating the reset
function SchwankControl Touch or switching off
the power supply [min. 3 seconds] of the heater.
Error code "A" does not put the heater in a reset-
requiring lock, but only switches off the heater.
Error Error name
code
Ionization error
1
during start
Ionization error
2
during operation
3 APS
open error
[APS=
air pressure switch]
4 APS
closed error
5 Encoder signal
missing error
6 Unexpected
"encoder signal
"error
44
Description
If flame is not
detected for the 2
ignition attempts
during start
If flame is not
detected for the 2
ignition attempts
after a flame loss
Error Is given if phase
angle control type is
selected [PP02=0]
Error is given if APS
contact opens
during start or
operation
Error Is given if phase
angle control type is
selected [PP02=0]
Error is given if APS
contact already
closed during start
Error Is given if PWM
control is selected
[PP02=1]
Error is given if no
encoder signal
detected or fan
speed < 10 RPS.
This error is given
after 3 sec.
Error Is given if phase
angle control type is
selected [PP02=0]
and encoder signal
is detected > 30 RPS.
This error is given
after 3 sec.
7 Gas valve
feedback error
Ionization
8
component error
MODBUS signal
10
missing error
Tab 9: Error code IC 4000/1
Error in gas valve
drive or feedback
check circuitry
Ionization signal is
out of range
If PP01=01 selected
as MODBUS control
and for more than
3 minutes no
MODBUS signal has
been received this
error is given and
heater switch off.
Burner control is not
locked.