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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 6 Basic unit 01.12.2009
3. Resetting via the PC tool
Refer to the documentation on the PC tool (J7352).
Error
code
Diagnostic
code
Meaning for the LMV37.4... system
167 3 Manual lockout by PC tool
6.5.3.2. Alarm upon start prevention
If start prevention occurs, the display of the AZL2... shows it.
Start prevention takes place only when a heat request is delivered and one of the
startup criteria is not fulfilled.
The period of time to elapse from start prevention to display on the AZL2... is set to a
fixed value of 5 seconds.
In addition, it is possible to indicate start preventions via the alarm output. This function
can be activated per parameter.
No. Parameter
210
Alarm in the event of start prevention
0 = deactivated
1 = activated
If «Alarm in the event of start prevention» is activated via the alarm relay, start preven-
tion and lockout can only be distinguished via the display on the AZL2… Start preven-
tions are displayed as Err:, lockouts as Loc:.
&
Note
If reset contact X8-04, terminal 1, is activated in the event of start prevention, the unit
is manually locked. The period of time from occurrence of start prevention to indica-
tion by the alarm contact equals the time to the display on the AZL2...
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