Siemens LMV5 Quick Start Manual page 147

Error Diag.
Device Display
code code
Code for VSD
Any # VSD Sys.
Module Fault
VSD Speed Acquisition
01
Module faulty
Wrong Direction
02
of Rotation
Speed Acquisition
03
faulty
Standardization
04 canceled because
1F
of VSD
VSD Sys.
Standardization
05 canceled because
of Air Actuator
Speed Test was
06
not successfully
completed
21 Any # Safety Loop open
Devices
conn. To Internal Temp
22 Any # LMV5 Limiter
has responded
LMV5 QSG Rev 4
Meaning for the LMV5x system
Fault with VSD Module
Basic unit has detected a fault in connection with the VSD
module
Internal VSD module test was not successful
Fan rotates in the wrong direction
Pulse sequence and length at the speed input were different
from those anticipated
Fan was not able to keep the standardized speed at a constant
level
Air actuator (or air influenced actuator) has not reached the
prepurge position.
For this reason, speed standardization is not possible
Internal VSD module speed test was not successful
(Set parameter Settling Time to 16)
Fault with devices or wiring connected to the Base Unit (LMV5)
Limit switches wired into the saftey loop have opened (such as
low water or High Limit)
Internal TL has switched off because;
Params&Display>Load
Controller>TempLimiter>TL_Thresh_Off
value has been exceeded.
Sec 5 Pg 21
Corrective action
If fault occurs sporadically improve EMC. If fault occurs
continously, replace LMV5
1) Check to see if the motor's direction of rotation is
correct. Reverse if necessary
2) Check to see if the arrow on the speed wheel points
in the correct direction of rotation. Reverse if necessary.
1) Check and or adjust the gap between the speed
wheel and the sensor. The gap shold be about 1/16" of
an inch (2mm) or about two turns out.
2) Check the wiring of the speed sensor. Ensure
reference ground is connected.
1) Check to see if all air-influencing actuators travel to
the prepurge position and remain in that position for the
VSD standardization.
2) Ensure torque requirements of air influencing
dampers / valves is less than Actuator output.
3) Verify that no air influencing damper / valve is bound.
4) Check CanBus power suppy and
CanBus fuses (FU 2 and FU3)
If fault occurs sporadically improve EMC.
If fault occurs continously, replace LMV5.
Check all switches wired into the saftey loop circuit. This
also includes the burner flange circuit.
Check the burner / boiler temperature, sensor located on
Input 1 and / or Input 4, Terminal X60
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