Siemens LME7 Series - Error Code List with Operation via External AZL2 Display

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Building Technologies Division Basic Documentation LME7... CC1P7105en

Infrastructure & Cities Sector 14 PME72.541... 29.11.2011

Phase

number

Function

LOC Lockout shutdown phase

OFF Standby, waiting for heat request

oP:P1 Part 1: Interval: Pilot valve OFF – release of load controller

Part 2: Request load controller OPEN

Part 3: Modulation of actuator toward high-fire

Part 4: High-fire reached

Part 5: Request load controller CLOSE

Part 6: Modulation of actuator toward low-fire

Part 7: Low-fire reached

10 Actuator travels to the CLOSED position, home run

21 Safety valve ON, air pressure switch in no-load position

Check if POC is closed, actuator travels to the CLOSED position

22 Part 1: Fan motor ON

Part 2: Specified time air pressure switch

Message (timeout), stabilization of air pressure switch

24 Opening time of actuator (timeout)

30 Part 1: Prepurge time without flame simulation test

Part 2: Prepurge time with flame simulation test (2.1 seconds)

36 Closing time of actuator (timeout)

38 Preignition time

40 Postignition time

42 Flame detection

44 Interval: End of ignition safety time and fuel valve 1 ON

50 Part 1: Interval: Fuel valve 1 ON and pilot valve OFF

Part 2: Response time

72 Opening time of actuator (timeout)

74 Part 1: Operation is ended

Part 2: Postpurge time

90 Pressure switch-min open → safety shutdown

Key to phases

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