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Building Technologies Basic documentation LMV37.4... CC1P7546en
29 Error code list (all LMV2 types / LMV3 types) 17.12.2018
Error
code
Diagnostic code Meaning for the LMV37.4 Recommended measures or causes
240 (-16) Restore – no backup in AZL2
No backup stored in AZL2
241 (-15) Restore – abortion due to unsuitable product no. (ASN)
Backup has an unsuitable product no. (ASN) and must not be loaded on the LMV37.4
242 (-14) Backup – backup made is inconsistent
Backup is faulty and cannot be transferred back
243 (-13) Backup – data comparison between µCs faulty
Reset and repeat backup
244 (-12) Backup data are incompatible
Backup data are incompatible with the current software version, restore not possible
245 (-11) Access error to parameter Restore_Complete
Reset and repeat backup
246 (-10) Restore – timeout when storing in EEPROM
Reset and repeat backup
247 (-9) Data received are inconsistent
Backup data record invalid, restore not possible
248 (-8) Restore cannot at present be made
Reset and repeat backup
249 (-7) Restore – abortion due to unsuitable burner identification
Backup has an unsuitable burner identification and must not be transferred to the LMV37.4
250 (-6) Backup – CRC of one page is not correct
Backup data record invalid, restore not possible
251 (-5) Backup – burner identification is not defined
Define burner identification and repeat backup
252 (-4) After restore, pages still on ABORT
Reset and repeat backup
253 (-3) Restore cannot at present be made
Reset and repeat backup
254 (-2) Abortion due to transmission error
Reset and repeat backup
255 (-1) Abortion due to timeout during backup / restore
Make a reset, check the connections and repeat backup / restore
In case of repeated backup timeout, the AZL2 does not yet support backup functionality
146 # Timeout building automation interface Refer to Modbus User Documentation (A7541)
1 Modbus timeout
2 eBus timeout
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 not be smaller than the lower output limit
3 (-3) TÜV test default output too high
TÜV test default output must not be greater than the upper output limit
4 (-4) Manual interruption
No error: Manual abortion of TÜV test by user
5 (-5) TÜV test timeout
No loss of flame after shutdown of fuel valves
1. Check to see if there is extraneous light
2. Check wiring to see if there is a short-circuit
3. Check to see if valve is leaking
154 # Trim function: Invalid analog value
1. Check wiring of analog trim specification to see if there is an open-circuit / loose contact
2. Check the process date of the read-in trim specification (parameter 916; 4 mA = -15% / 12 mA
= 0% / 20 mA = 15%)
1 Start prevention
2 Warning message (trim function temporarily deactivated)
155 # Trim function: Invalid curve setting VSD / PWM fan
The curve setting of the VSD / PWM fan must include a reserve for the set trim range.
((Minimum value curve + negative trim range)
curve point (maximum value curve -
positive trim range))
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