Bosch FW 100, Installation & User'S Instructions

Page: 67 / 84

67
Troubleshooting
6 720 617 763 (2008/09)
Fault 02
Internal fault
Some parameters reset to factory settings
due to EEPROM problem 205 Some parameters reset to
default. Check parameter settings
and readjust them as neces-
sary. Replace faulty control-
ler.
Fault 02
Internal fault
FW 100 can no longer control the heating
system! 255 FW 100 can no longer control
the heating system. Replace faulty controller.
Fault 03
Room temp sensor faulty 20 There is a circuit break on the
room temperature sensor built
into the FW 100. Replace faulty controller.
21 There is a short circuit on the
room temperature sensor built
into the FW 100.
Fault 11
System configuration: new BUS device
New ISM detected. Power up all ISMs simul-
taneously and start automatic system con-
figuration. 131
132 New ISM detected. Power up all ISMs simultane-
ously and start automatic
system configuration.
Fault 12
System configuration: BUS device missing
ISM1 not detected. Check connection. 170
171 HLC has tripped or is faulty. Check HLC.
Check solar parameter T2
(
Æ Section 6.5, page 47).
Is thermal disinfection
active?
ISM1 no longer detected
despite having been config-
ured. Check connection.
Fault 13
System configuration: BUS device changed
or replaced
Check system configuration for DHW or
start automatic system configuration. 157 BUS device changed or
replaced. Check system configuration
for domestic hot water sys-
tem or start automatic sys-
tem configuration.
Fault 13
System configuration: BUS device changed
or replaced
Check system configuration for heating cir-
cuit! 158
159 Check system configuration
for heating circuit
Fault 15
Outside temperature sensor not connected
Outside temperature is not available. 30 Outside temperature sensor
not recognised. Check outside temperature
sensor and remedy interrup-
tion, if necessary.
Fault 19
Unable to save parameter settings 202 BUS device is configured but
not available at present. Check system layout, check
system configuration, modify
if necessary and set parame-
ter again.
Fault 20
System configuration: invalid 193 Invalid coding in remote con-
trol for the heating circuit. In combination with FW 100
only coding 1 is possible in
the remote control.
Fault 27
FW100 not found! 191 Remote control cannot detect
heating controller FW 100. Check Bus connection.
Information displayed (
Æ
Pos. 1, 3 and 4 in fig. 26)
Text Code Cause Remedy (by installer)
Tab. 23