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Building Technologies Division
Basic documentation LMV36...
CC1P7544en
Infrastructure & Citiies Sector
30 Error code list
25.09.2013
Error
code
Diagnostic code
Meaning for the LMV36... system
Remedy
87 #
Error
air
actuator
0
Position
error
Target position could not be reached within the required tolerance band.
Check to see if actuator is locked or overloaded.
Bit 0
Valency 1
Line interruption
Line interruption detected at actuator’s terminals.
Check wiring (voltage X53 across pin 5 or 6 and pin 2 >0.5 V).
Bit 3
Valency
8
Curve too steep in terms of ramp rate
Check position differential between the curvepoints and the modulating operating ramp setting
(parameter 544).
1. Modulating operating ramp 32 seconds
The slope of the curve may be a maximum position change of 31° (15° for SQM33.6 and 9° for
SQM33.7) between 2 curve points in modulating mode.
2. Modulating operating ramp 64 seconds
The slope of the curve may be a maximum position change of 62° (30° for SQM33.6 and 18° for
SQM33.7) between 2 curve points in modulating mode.
Bit 4
Valency
16
Sectional deviation in comparison with last referencing
Actuator was overloaded or mechanically twisted.
1. Check the setting of the actuator type (parameter 613.1)
2. Check to see if the actuator is blocked somewhere along its working range.
3. Check to see if the torque is sufficient for the application.
90
#
Internal error basic unit
91
#
Internal error basic unit
93
#
Error flame signal acquisition
3
Short-circuit
of
sensor
Short-circuit at QRB...
1. Check wiring.
2. Flame detector possibly fault.
95 #
Error
relay
supervision
3 Ignition transformer
4 Fuel valve 1
5 Fuel valve 2
6 Fuel valve 3
External power supply NO contact
Check wiring
96 #
Error
relay
supervision
3 Ignition transformer
4 Fuel valve 1
5 Fuel valve 2
6 Fuel valve 3
Relay contacts have welded
Test the contacts:
1. Unit connected to power: Fan output must be dead.
2. Disconnect power: Disconnect fan. No resistive connection between fan output and neutral
conductor allowed.
If one of the 2 tests fails, release the unit since contact have definitively welded and safety can no
longer be ensured.
97 #
Error
relay
supervision
0
Safety relay contacts have welded or external power supply
fed to safety relay
Test the contacts:
1. Unit connected to power: Fan output must be dead.