Bosch Rego 1000 User Manual page 17

Reset condition: The error in the electric heater has been overcome and
no alarm signal.
Category: F.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.15 Failure on sensor E31.T32 anti-freeze cooling
Function: The mixing valve in the collector circuit is closed. Activated
when the sensor's value indicates a temperature lower than -10 °C. The
sensor is used in certain cooling applications and is placed in the
collector circuit for cooling to prevent the heat exchanger from freezing.
Reset requirement:The value of the sensor indicates >-10 °C.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.16 Short circuit on sensor E31.T32 anti-freeze cooling
Function: The mixing valve in the collector circuit is closed. Activated
when the sensor's value indicates a temperature higher than 30 °C. The
sensor is used in the collector circuit for cooling in order to prevent the
heat exchanger from freezing.
Reset requirement:The value of the sensor indicates >30 °C.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.17 Error dew point sensor E1x.TM
Function: Cooling on current mixing valve is aborted. Activated when
the signal from the sensor deviates from its normal operating range. The
alarm may appear after a power failure but the alarm cause normally
disappears automatically and the only thing that has to be done is to
acknowledge the alarm.
Reset condition: The sensor's signals return to the normal operating
range.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.18 Faulty protective anode E41.F31
Function: Does not affect the compressor or additional heat. The alarm
is activated when the anode in the hot water heater is broken or does not
work.
Reset condition: The anode should be taken care of so as to prevent
corrosion in the hot water heater.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer.
7.7.19 Failure on sensor E11.T1 flow
Function: The system switches over to control based on sensor T8. The
alarm is activated when the sensor's value indicates a temperature lower
than 0 °C.
Rego 1000 – 6 721 831 662 (2021/03) en
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.20 Short circuit on sensor E11.T1 flow
Function: The system switches over to control based on sensor T8. The
alarm is activated when the sensor's value indicates a temperature
higher than 110 °C.
Reset condition: The value of the sensor indicates
< 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.21 Failure on sensor E12.T1, E13.T1... flow
Function: The mixing valve for the circuit is closed completely. The
alarm is activated when the sensor's value indicates a temperature lower
than 0 °C.
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.22 Short circuit on sensor E12.T1, E13.T1... flow
Function: The mixing valve for the circuit is closed completely. The
alarm is activated when the sensor's value indicates a temperature
higher than 110 °C.
Reset condition: The value of the sensor indicates
< 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.23 Failure on sensor T2 outdoor
Function: In the event of a failure on T2, the outdoor temperature is set
to 0 °C so that the heat pump can continue to produce heat. The alarm is
activated when the sensor's value indicates a temperature lower than -
50 °C.
Reset condition: The value of the sensor indicates
> -50 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.24 Short circuit on sensor T2 outdoor
Function: In the event of a short circuit on T2, the outdoor temperature
is set to 0 °C so that the heat pump can continue to produce heat. The
alarm is activated when the sensor's value indicates a temperature
higher than +70 °C.
Alarm
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