Bosch HPC 400 - Page 28

Eliminate fault
BOSCH
7 Eliminate fault
A fault in the system is indicated on the display of the user interface. The
cause can be a fault on the user interface, in a component, in an
assembly or on the heat source. The instructions belonging to the
affected component, assembly or heat source used and especially the
service manual with detailed fault descriptions contain additional
information on troubleshooting . Many heat source faults do not appear
on the display of the user interface. They are described in the documents
for the heat source used.
information that is not shown on user level. Faults are always shown on
the user level.
Use only original spare parts. Damage resulting from
spare parts not supplied by the manufacturer is not
covered under warranty.
The user interface saves the last faults that occurred with a time stamp
(~ fault history, page 27) . On the installer level there can be additional
If a fault cannot be corrected, contact the service
technician responsible for your area or the nearest
distributor's service office.
No communication via BUS conn
EMS2
All 1038 Invalid time/date
All
3061 , No communication with
3062 mixer module
3063 1 .. .
3064 (3061 = HeatmgclrcUit 1;
3062 = Heating circuit 2;
3063 = Heating circuit 3;
1
Check whether BUS cable was connected incorrectly
Check whether BUS cable is defective . Remove expansion I
module from EMS-BUS and switch controller off and on again.
Check whether the cause of the fault is a module or module
wiring
Rectify wiring faults and switch
off and on
again
Repair or replace the BUS cable .
Replace the defective EMS - BUS node
1~ __ ~ __ -.- __ D _ at _ e/ _ ti _ m ~ e _ no _ t ~ ye _ t _ se _ t __________ ~I~ __________ S ~ et _ d ~ at _ e/ _ ti _ m _ e __________ ~
Prolonged loss of power supply Avoid voltage failures
1
Check configuration (set address at the module) . The selected
setting requires a heating circuit module
I Check the EMS connecting lead to the heating circuit module for
damages . BUS voltage at the heating circuit module must be
between
12 - 15 V DC .
Change configuration
Replace damaged cables
3064 = Heatmg C/fCUIt 4)
\ Heating circuit module defective Replace heating circuit module I
I ~I-- ~ ~~----~--~~--~~~~------~~--~~------ ~ ---'---------~
All 3091 Room temperature sensor faulty I Change the control type of the heating circuitfrom room Replace the system controller or the remote controL I
13092 (3091 = Heating circuit 1; temperature-dependent to weather - compensated
1
3093 3092 = Heating circuit 2; Change frost protection from room temperature·dependent to
3094 3093 = Heating circuit 3; outside temperature-dependent. If necessary
3094 = Heating circuit 4)
All 1 6004 No communication w. solar
module
I
A31 1 3021 Heating circuit 1 ... 4 flow
A32 3022 temperature sensor defective
A33 1
3023
(A31/3021 = Heatingcircuit1 ;
A34 3024 A32/3022 = Heating circuit 2;
f A51 6021
A33/3023 = Heating circuit 3;
A34/3024 = Heating circuit 4)
Collector temperature sensor
faulty
Table 38 Fault displays
Check configuration (set address at the module) . The selected 1
setting requires a solar module
I Check the EMS connecting lead to the solar module for damages .
BUS voltage at the solar module must be between 12-15 V DC .
Solar module defective
Check configuration. The selected setting requires a flow
temperature sensor
Check the connecting lead between heating circuit module and
flow temperature sensor
Check flow temperature sensor according to table
Check the voltage at the connecting terminals of the flow
temperature sensor at the heating circuit module according to
table
...,---::c----,--
Check configuration . The selected setting requires a collector
sensor
'checi<connecting lead between solar module and COlle ct o r!
temperature sensor I
Check collector sensor according to table
Check the voltage at the connecting terminals of the collector
temperature sensor at the solar module according to table
Change configuration
Replace damaged cables
Replace the module
Change configuration .
Establish a connection properly
If values do not match. replace the sensor
If the sensor values matched , but the voltage values
do not match, replace the heating circuit module
Change configuration .
Establish a connection properly
If values do not match , replace the sensor
If ihe sensor values matched , but the voltage values
do not match, replace the solar module
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