8.2.34 Alarms 204 to 237 – Network error on the digital remote control unit x! 59
8.2.35 Alarm 238 – Fault in the heating circuit network 59
8.2.36 Alarm 239 – The boiler sensor on the second boiler is missing or is defec-
tive!
59
8.2.37 Alarm 240 – The negative pressure in the combustion chamber cannot be
regulated!
59
8.2.38 Alarm 241 – The negative pressure sensor is defective! 60
8.2.39 Alarm 242 – The oxygen sensor is missing or is defective! 60
8.2.40 Alarm 244 – Calibration error of the lambda probe 60
8.2.41 Alarm 246 – No flame detectable 60
8.2.42 Alarm 248 – The maintenance interval has elapsed. 60
8.2.43 Alarm 249 – The chimney sweep function is active 60
8.2.44 Alarm 250 – PCB revision and system number are not compatible 60
8.2.45 Alarm 251 – The emergency stop switch is pressed! 61
8.2.46 Alarm 253 – Speed of the PA fan is too low! 61
8.2.47 Alarm 254 – The speed of the induced draught fan is too low! 61
8.2.48 Alarm 255 – Error GSM module 61
9 Appendix 62
9.1 Efficient and low-emission operation 62
9.2 Stickers 62
9.2.1 Stickers on the switch bracket 62
9.2.2 Stickers on the front 63
9.2.3 Stickers on the rear side 63
9.2.4 Stickers on the blow-in nozzle 64
9.2.5 Stickers on the storage room 65
TTD-EF2 66
KE_KWB_EF2 68
Glossary 69
Keyword index 70
Table of Contents (Index)
6
B KWB Easyfire EN, 05.2011
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