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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 28 Error code list 01.12.2009
Error
code
Diagnostic code Meaning for LMV37.4... system Recommended measures
150 # TÜV test
1 (-1) Invalid phase
TÜV test may only be started in phase 60 (operation)
2 (-2) TÜV test default output too low
TÜV test default output must be lower than the lower output limit
3 (-3) TÜV test default output too high
TÜV test default output must be higher than the upper output limit
4 (-4) Manual abortion
No error: Manual abortion of TÜV test by the user
5 (-5) TÜV test timeout
No loss of flame after fuel valves have been shut
1. Check for extraneous light
2. Check wiring for short-circuit
3. Check to see if one of the valves is leaking
165 # Internal error
166
0 Internal error watchdog reset
167 # Manual locking
Unit has been manually locked (no error)
1 Manual locking by contact
2 Manual locking by AZL2...
3 Manual locking by PC tool
8
Manual locking by the AZL2...
Timeout / communication breakdown
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
9
Manual locking by the PC tool
Communication breakdown
During a curve adjustment via the ACS410, communication between the LMV37.4... and the
ACS410 was interrupted for more than 30 seconds
33
Manual locking after PC tool
reset attempt
PC tool made a reset attempt although the system worked correctly
168 # Internal error management
Make a reset; if error occurs repeatedly, replace the unit
169 # Internal error management
Make a reset; if error occurs repeatedly, replace the unit
170 # Internal error management
Make a reset; if error occurs repeatedly, replace the unit
171 # Internal error management
Make a reset; if error occurs repeatedly, replace the unit
200 OFF # System error-free
No error
201
OFF UPr
# Start prevention
Start prevention because unit has not been parameterized
1 No operating mode selected
2..3 No fuel train defined
4..7 No curves defined
8..15 Standardized speed undefined
16..31 Backup / restore was not possible
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