47
GB
Lockouts
133
Safety time for establishment of flame
exceeded
Repetition error counter exceeded
Safety time for establishment of flame
exceeded
151 BMU fault internal False polarity of the 230V power supply
152 Parameterization error Reprogram PCB
153 Unit manually locked Reset button pressed too long
160 Fan speed threshold not reached Fan speed threshold not reached
162 APS does not close Air pressure switch does not close
164 Flow/pressure switch HC fault Flow/pressure switch HC fault
166 Air pressure switch does not open Air pressure switch does not open
183 Unit in parameterization mode
Unit in parameterization mode (parameter
stick)
322 Water pressure 3 too high Water pressure on input H3 too high
323 Water pressure 3 too low Water pressure on input H3 too low
324 Same sensor Input BX Same sensor Input BX
330 Sensor input BX1 no function Sensor input BX1 no function
331 Sensor input BX2 no function Sensor input BX2 no function
332 Sensor input BX3 no function Flue gas sensor not programmed correctly
353 Cascade flow sensor B10 missing Cascade flow sensor B10 missing
384 Extraneous light Short circuit ionization electrode
385 Mains undervoltage Mains undervoltage
386 Fan speed tolerance Fan speed tolerance exceeded
388 DHW sensor no function configuration error sensor input B3/B38
426 Check flue gas damper malfunction of flue gas damper
427 Config flue gas damper Parameterization flue gas damper
432 Function ground missing Missing earth connection
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