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Building Technologies CC1N7101en
HVAC Products 27.11.2008
Functions (cont´d)
If lockout occurs, the outputs for the fuel valves, the burner motor and the ignition
equipment will immediately be deactivated (< 1 second).
Cause Response
Mains failure
Restart
Voltage below undervoltage threshold
Safety shutdown
Voltage above undervoltage threshold
Restart
Extraneous light during «t1» Lockout
Extraneous light during «tw» Prevention of startup, lockout after 30 seconds at the latest
LME41.051..., LME41.054..., LME41.092...:
Prevention of startup
No flame at the end of «TSA»
LME11…,
LME41.051...:
Max. 3 repetitions, followed by lockout at the end of «TSA»
LME2…, LME41.052..., LME41.053..., LME41.054...,
LME41.071..., LME41.09...:
Lockout at the end of «TSA»
Loss of flame during operation
LME11…, LME41.051...:
• Establishment of flame at the end of «TSA» → Max. 3 repeti-
tions
• No establishment of flame at the end of «TSA» → Lockout
LME2…:
Lockout
LME41.052..., LME41.053..., LME41.054..., LME41.071...,
LME41.09...:
Repetition
«LP» is welded in working position
LME41...:
None reaction
Prevention of startup, lockout after 65 seconds at the latest
«LP» is welded in no-load position
LME41...:
«LP» is welded in no-load position or no connection
(jumper) between terminal 3 and terminal 11
Lockout max 65 s after completion of «t10»
No air pressure signal after completion «t10»
LME41…:
No air pressure signal after completion «t10» or
breakdown of jumper terminal 3 / terminal 11
Lockout
LME41...:
Safety shutdown / restart
«CPI» contact is open during «tw» Prevention of startup, lockout after 60 seconds at the latest
In the event of lockout, the LME… remains locked and the red signal lamp (LED) will light
up. The burner control can immediately be reset. This state is also maintained in the case
of mains failure.
When lockout occurs, the burner control can immediately be reset. To do this, press the
lockout reset button for about 1 second (< 3 seconds). The LME… can only be reset
when all contacts in the line are closed and when there is no undervoltage.
If no flame is established at the end of «TSA», or if the flame is lost during operation, a
maximum of 3 repetitions per controlled startup can be performed via «R», or else
lockout will be initiated. Counting of repetitions is restarted each time a controlled star-
tup via «R» takes place.
Control sequence in the
event of fault
Resetting the burner
control
Limitation of repetitions
(only LME11…,
LME41.051...)
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