Bosch Condens 7000 FP Installation And Service Instructions Manual page 63

1)
Type Fault Sub Cause
code code
V CY 573 Flow temperature
< -5 °C
(interruption)
V CY 574 Flow temperature
> 130 °C (short-
circuit)
V EE 601 Boiler water
temperature
sensor reading
(twin sensors).
V EE 612 Readings of the
return
temperature
sensor
V EE 613 Flow temperature
sensor
reading
Condens 7000 FP – 6721846699 (2022/12)
Description Test procedure/Cause
Control unit is receiving Check the connecting lead between
implausible values from the burner control unit and the flow
flow temperature temperature sensor.
sensor
Check the electrical connection of
the connecting lead at the burner
control unit and the flow
temperature sensor.
Check resistance values of
temperature sensor against table.
Burner control unit defective.
Control unit is receiving Check the connecting lead between
implausible values from the burner control unit and the flow
flow temperature temperature sensor.
sensor
Check the electrical connection of
the connecting lead at the burner
control unit and the flow
temperature sensor.
Check resistance values of
temperature sensor against table.
Burner control unit defective.
Successive Check the cable running to the boiler
measurements of the water temperature sensor and the
boiler temperature are contacts at the burner control unit
too widely divergent. and pressure sensor.
Check plug-in connector.
Check sensor readings against table. ▶ Replace temperature sensor if
Burner control unit defective.
Successive return Check the cable running to the return
temperature readings temperature sensor and the
are too widely contacts.
divergent.
Check plug-in connector.
Check sensor readings against table. ▶ Replace temperature sensor if
Burner control unit defective.
Successive flow Check the cable running to the flow
temperature readings temperature sensor and the
are too widely contacts.
divergent.
Check plug-in connector.
Check sensor readings against table. ▶ Replace temperature sensor if
Burner control unit defective.
Operating and fault displays
Action
▶ Replace the connecting lead if
necessary.
▶ If necessary, eliminate the
contact problem.
▶ Replace the temperature sensor
if necessary.
▶ If the connecting lead, contacts
and resistance values are all OK,
replace the burner control unit.
▶ Replace the connecting lead if
necessary.
▶ If necessary, eliminate the
contact problem.
Replace the temperature sensor if
necessary.
▶ Replace the temperature sensor
if necessary.
▶ If the connecting lead, contacts
and resistance values are all OK,
replace the burner control unit.
▶ Replace if damaged.
▶ Clean if dirty or replace if
necessary.
▶ Reconnect any loose plugs.
there are discrepancies.
▶ If the connecting lead, contacts
and resistance values are all OK,
replace the burner control unit.
▶ Replace if damaged.
▶ Clean if dirty or replace if
necessary.
▶ Reconnect any loose plugs.
there are discrepancies.
▶ If the connecting lead, contacts
and resistance values are all OK,
replace the burner control unit.
▶ Replace if damaged.
▶ Clean if dirty or replace if
necessary.
▶ Reconnect any loose plugs.
there are discrepancies.
▶ If the connecting lead, contacts
and resistance values are all OK,
replace the burner control unit.
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