Bosch HPC 400 - Page 29

@) BOSCH
Eliminate fault
:::: ".i:. ~ Test procedure/Cause Corrective measure
~ "8 ~::: Cause orfault description
A51 6022 Bottom temperature sensor for Check configuration . The selected setting reqUires a cylinder Change configuration
cylinder 1 defective
sensor at the bottom
I
Standby mode active
I Check connecting lead between solar module and collector
I
Establish a connection properly
temperature sensor
, Check the electrical connection of the connecting lead at the Ilf a screw or plug is loose . rectify the contact problem
solar module
Check bottom cylinder temperature sensor according to table If values do not match. replace the sensor
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Check the voltage at the connecting terminals of the cylinder If the sensor values matched. but the voltage values I
temperature sensor at the solar module according to table
do not match . replace the module j
I
A61
I-- r------- - ~
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1081 Two master user interfaces in the Check parameterisation at the installation level Remove all other user interfaces from the system .
A62
1082 system . I (In the BUS system . further user interfaces are configured as the
A63 1083
controller in addition to the HPC400)
A64 1084
H01 5203
Alarm Outside temperature I Check the connecting lead between the controller and outside
If there is no continuity. rectify the fault
I
sensor Tl fault
temperature sensor for continuity
Check the electrical connection of the connecting lead in the Clean corroded connecting terminals in the outside
I outside temperature sensor or on the plug in the controller
I
sensor housing.
I Check outside temperature sensor according to table If values do not match . replace the sensor
Check the voltage at the connecting terminals of the outside If the sensor values matched. but the voltage values
temperature sensor in the controller according to table
do not match . replace the controller
H01 5239 Alarm DHW sensor T3 fault
I
No hot water system installed Deactivate hot water system in the service menu
If the DHW function is not
I Check connecting lead between controller and hot water
I
If there is a defect. replace the sensor
needed . deactivate it on the user temperature sensor
I
interface
Check the electrical connection of the connecting lead in the If a screw or plug is loose . rectify the contact problem
~ ~roller
Check the hot water temperature sensor according to table If values do not match. replace the sensor
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I
Check the voltage at the connecting terminals of the hot water If the sensor values matched. but the voltage values
I temperature sensor in the controller according to table do not match. replace the controller
H01
5284 1 Warning Last thermal
i Check if water is possibly being drawn from the DHW cylinder
If water is being drawn constantly. take action to stop
1 A41
4051
disinfection failed constantly due to a leak or taps being open
this
Check the posit i on of the hot water temperature sensor ; it may
Position the hot water temperature sensor . correctly
I be attached incorrectly or suspended in the air
I
I Check whether the heating coil in the cylinder has been vented
Vent if necessary
completely
Check the connection pipes between the boiler and cylinder.
Rectify any faults in the pipework
I
and with the aid of the i nstallation i nstructions . ensure that they
are connected properly
Using the technical documentation. check whether the installed I
Replace the pump if there are deviations
cylinder primary pump is providing the required output
~ cessive losses in DHW circulation line
Check DHW circulation line
~
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I
Check the hot water temperature sensor according to table
Replace the sensor if there are deviations from the
table values
Table 38 Fault displays
HPC 400 - 6 720821 77 2 (2017/0 () 29