Bedienungsanleitung Bosch CR 50 (Seite 9 von 12) (Englisch)

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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.

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