6720856749 (2016/03) CR50
8 | Troubleshooting
Table 7 Information menu
6.6 Maintenance menu
Service-relevant settings are made in this menu, e. g. deleting
the list of faults after all faults have been rectified in the course
of service.
Table 8 Settings in the Maintenance menu
6.7 System info menu
Detailed information about the BUS nodes in the system can be
queried in this menu. Changes are not possible.
Table 9 System info
7 Troubleshooting
A fault appears 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 service manual with
detailed fault descriptions contains additional information on
troubleshooting.
Structure of table headers:
Fault code - sub-code - [cause or fault description].
Appl.act.flow 20 ... 90 °C: Flow temperature measured at
the heat source (actual temperature)
Appl.max.flow 35 ... 90 °C: Maximum flow temperature set
at the heat source
LLT temp. 20 ... 90 °C: Current hot water temperature
in the low-loss header
HC operation OFF: No operation | Heating: Heating mode
active | Setback: Setback mode active |
Manual: Manual operation active
Current operating mode in heating zone.
HC set sply. 20 ... 90 °C: Required flow temperature in
heating zone
Set room temp OFF: Heating switched off, e. g. in the
summer
5.0 ... 30.0 °C: Desired room temperature
Room Temp. 5.0 ... 30.0 °C: Measured room
temperature
DHW operation ON: DHW heating active
OFF: Water heating not active
Set DHW temp 15 ... 80 °C: Desired DHW temperature
Act. DHW temp 15 ... 80 °C: Measured DHW temperature
Max. DHW
temp
15 ... 80 °C: Maximum hot water
temperature set on the user interface
Menu item Control range: Function description
Maint.message OFF: No service display appears on the user
interface.
ON: A service display appears on the display
of the user interface on the set date.
Maint. date 2012-01-01 – 2099-12-31: Date for next
heating system maintenance.
Reset maint. NO: The service display is not reset.
YES: The service display is reset.
Current fault such as 2012-09-29 A11/802: All current
faults are displayed, arranged in order of
fault severity: the date is displayed, the fault
code and sub-code flash alternately in the
value display.
Menu item Possible values: Description
Fault history such as 2012-07-31 A02/816: The last 20
faults are displayed, arranged in order of the
time of occurrence. The date appears in the
text line, the fault code and sub-code flash
alternately.
Reset fault NO: The fault history is retained.
YES: The fault history is deleted.
Menu item Display example: Function description
Install.date 2012-09-14: Date of first commissioning as
a controller is automatically entered.
Control unit XXXX.X: Designation of the heat source
controls
Control SW 1.xx | 2.xx: Software version of the heat
source controls
SW controller NFxx.xx: Remote control software version
A01 - 808 - [DHW heating: hot water temperature sensor
1 faulty - replacement mode active]
Test procedure/cause Corrective measure
No hot water system installed Deactivate hot water system
in the service menu
Check connecting lead
between controller and hot
water temperature sensor
If there is a defect, replace the
sensor
Check the electrical
connection of the connecting
lead in the controller
If a screw or plug is loose,
rectify the contact problem
Menu item Control range: Function description
To Next Page
Loading...
