Siemens LMV37.4 Series Basic Documentation page 253

Basic unit with integrated fuel-air ratio control for forced draft burner
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Error
Diagnostic code
code
1..9
21..29
41..49
61..69
156
#
0
1
10
11
157
#
0
1
165
#
166
0
167
#
1
2
3
8
9
33
168
#
169
#
170
#
171
#
Building Technologies
Meaning for the LMV37.4
Minimum value VSD curve fall below
Maximum value VSD curve exceeded
Fuel 1: Minimum value VSD curve fall below
Fuel 1: Maximum value VSD curve exceeded
Trim function: Maximum time for range limit exceeded
Trim function at lower limit
Trim function at upper limit
Fuel 1: Trim function at lower limit
Fuel 1: Trim function at upper limit
Trim function: Analog input test
Analog value standby
Analog value prepurging
Internal error
Internal error watchdog reset
Manual locking
Manual locking by contact
Manual locking by AZL2
Manual locking by PC software ACS410
Manual locking by the AZL2
Timeout / communication breakdown
Manual locking by the PC software ACS410
Communication breakdown
Manual locking by the PC software ACS410
Test of lockout
Internal error management
Internal error management
Internal error management
Internal error management
Basic documentation LMV37.4...
29 Error code list (all LMV2 types / LMV3 types)
Recommended measures or causes
The curvepoint of the VSD curve is below the permissible minimum value
(diagnostic code = curvepoint number; e.g. 1 = P1)
The curvepoint of the VSD curve is above the permissible maximum value
(diagnostic code = curvepoint number; e.g. 21 = P1)
Fuel 1: The curvepoint of the VSD curve is below the permissible minimum value
(diagnostic code = curvepoint number; e.g. 41 = P1)
Fuel 1: The curvepoint of the VSD curve is above the permissible maximum value
(diagnostic code = curvepoint number; e.g. 61 = P1)
Warning message!
Trim function is in limitation for too long (parameter 535; 916 < 531 or 916 >
532).This can be an indication that the trim function or the VSD curve is set
incorrectly.
Test value of the analog input is outside the tolerance range
1.
Check whether a current setting of 12 mA is present in standby.
2.
Check parameter 916 (permissible value range -1...+1%).
1.
Check whether a current setting of 4 mA is present in prepurging.
2.
Check parameter 916 (permissible value range -16...-14%).
LMV37.4 has been manually locked (no error)
During a curve adjustment via the AZL2, the timeout for menu operation has elapsed (setting via
parameter 127), or communication between the LMV37.4 and the AZL2 has broken down
During a curve adjustment via the ACS410, communication between the LMV37.4 and the ACS410
was interrupted for more than 30 seconds
Via PC software ACS410, a reset attempt was made with an error-free LMV37.4.
Make a reset; if error occurs repeatedly, replace the LMV37.4
Make a reset; if error occurs repeatedly, replace the LMV37.4
Make a reset; if error occurs repeatedly, replace the LMV37.4
Make a reset; if error occurs repeatedly, replace the LMV37.4
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CC1P7546en
17.12.2018

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