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6720856749 (2016/03)CR50
Old electrical and electronic appliances | 9
Table 10
Table 11
Table 12
Table 13
Table 14
Table 15
Table 16
Table 17
Table 18
8 Old electrical and electronic appliances
Electrical or electronic devices that are no longer
serviceable must be collected separately and sent
for environmentally compatible recycling (in
accordance with the European Waste Electrical
and Electronic Equipment Directive).
To dispose of old electrical or electronic devices, you should
use the return and collection systems put in place in the country
concerned.
Check the hot water
temperature sensor
according to table
If values do not match,
replace the sensor
Check the voltage at the
connecting terminals of the
hot water temperature sensor
in the controller according to
table
If the sensor values matched,
but the voltage values do not
match, replace the controller
A01 - 810 - [hot water remains cold]
Test procedure/cause Corrective measure
If the DHW priority was
deselected and heating and
DHW are running in parallel,
the boiler's performance may
not be not sufficient
Set water heating to "priority"
Check the hot water
temperature sensor
according to table
Replace the sensor if there are
deviations from the table
values
A11 - 1000 - [System configuration not confirmed]
Test procedure/cause Corrective measure
System configuration not
completed
Configure system completely
and confirm
A11 - 1010 - [No communication via BUS interface EMS 2]
Test procedure/cause Corrective measure
Check whether BUS cable
was connected incorrectly
Rectify wiring faults and
switch controller off and on
again
Check whether BUS cable is
defective. Turn the controller
off and on again.
Repair or replace the bus
cable
Replace defective user
interface
A11 - 1038 - [Invalid time/date]
Test procedure/cause Corrective measure
Date/time not yet set Set date/time
Prolonged loss of power supply Set date/time
A01 - 808 - [DHW heating: hot water temperature sensor
1 faulty - replacement mode active]
Test procedure/cause Corrective measure
A31 - 3021 - [Heating circuit flow temperature sensor
faulty - standby mode active]
Test procedure/cause Corrective measure
Check configuration. The
selected setting requires a
flow temperature sensor
Change configuration
Check flow temperature
sensor according to table
If values do not match,
replace the sensor
A61 - 1010 - [No communication via BUS interface EMS 2]
Test procedure/cause Corrective measure
Check whether BUS cable was
connected incorrectly
Rectify wiring faults and
switch controller off and on
again
Check whether BUS cable is
defective. Turn the controller
off and on again.
Repair or replace the bus
cable
Replace defective user
interface
A61 - 3091 - [Room temperature sensor faulty]
Test procedure/cause Corrective measure
User interface faulty Restart auto-
configuration. All users
must be on the BUS.
Replace user interface
Hxx - ... - [...]
Test procedure/cause Corrective measure
For instance, service interval
of heat source elapsed.
Service required; see
documents for the heat
source.
9


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