4
If the cause cannot be found or rectified, notify customer service.
Alarm 24 – Error on the sample probes system
The control was NOT able to reach the switch unit or the activated probe in the specified
amount of time.
4
Notify customer service.
Alarm 25 – Main drive speed too low!
Speed of the main drive was below the limit value for 3 seconds.
4
Notify customer service.
Alarm 26 – Main drive speed too high
Speed of the main drive was too high for 5 seconds.
4
Notify customer service.
Alarm 27 – Boiler temperature not plausible!
Temperature values that rise or fall to rapidly indicate a sensor defect.
4
Notify customer service.
Alarm 30 –The forward flow sensor of heating circuit 0 is
missing or defective!
Note: Corresponding alarm messages to the heating circuits 1 to 34 are output as Alarm 33 to
134.
Defective sensor or sensor cable
4
Check the sensor and its cabling.
4
If the fault occurs regularly, please notify customer service.
Alarm 31 – The room sensor of heating circuit 0 is missing or
defective!
Note: Corresponding alarm messages to the heating circuits 1 to 34 are output as Alarm 33 to
134.
Defective sensor or sensor cable
4
Check the sensor and its cabling.
4
If the fault occurs regularly, please notify customer service.
Alarm 32 –The outdoor sensor of heating circuit 0 is missing
or defective!
Note: Corresponding alarm messages to the heating circuits 1 to 34 are output as Alarm 33 to
134.
8.2.22
8.2.23
8.2.24
8.2.25
8.2.26
8.2.27
8.2.28
Troubleshooting
8
The alarm list
B KWB Easyfire EN, 05.2011
57
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