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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 
prevention 
 19 
Safety loop/burner flange, extraneous light, combustion 
pressure – start prevention 
 
 21 
Safety loop/burner flange, air pressure, combustion pressure – 
start prevention 
 
 23 
Safety loop/burner flange, extraneous light, air pressure, 
combustion pressure – start prevention 
 
  65  Safety loop/burner flange, POC – start prevention   
 67 
Safety loop/burner flange, extraneous light, POC – start 
prevention 
 
  69  Safety loop/burner flange, air pressure, POC – start prevention  
 71 
Safety loop/burner flange, extraneous light, air pressure, POC 
– start prevention 
 
 81 
Safety loop/burner flange, combustion pressure, POC – start 
prevention 
 
 83 
Safety loop/burner flange, extraneous light, combustion 
pressure, POC – start prevention 
 
 85 
Safety loop/burner flange, air pressure, combustion pressure, 
POC – start prevention 
 
 87 
Safety loop/burner flange, extraneous light, air pressure, 
combustion pressure, POC – start prevention 
 
23  #  Gas pressure switch-min (Pmin) / heavy oil direct start 
 
 
0  No minimum gas pressure  Check wiring to see if there is an open-circuit (X5-01) 
  1  Gas shortage – start prevention  Check wiring to see if there is an open-circuit (X5-01) 
 
2  Heavy oil direct start 
Check wiring to see if there is an open-circuit (X9-04) 
Check that the oil is preheated correctly 
50 #  Internal error 
Make a reset; if error occurs repeatedly, replace the unit 
51 #  Internal error 
Make a reset; if error occurs repeatedly, replace the unit 
55 #  Internal error 
Make a reset; if error occurs repeatedly, replace the unit 
56 #  Internal error 
Make a reset; if error occurs repeatedly, replace the unit 
57 #  Internal error 
Make a reset; if error occurs repeatedly, replace the unit 
58 #  Internal error 
Make a reset; if error occurs repeatedly, replace the unit 
60  #  Internal error: No valid heat source 
 
  1  Analog output preset valid – prevention of startup  Check wiring of analog predefined output to see if there is an open-circuit / loose contact 
  2  Analog output preset valid – default output low-fire 
Check wiring of analog predefined output to see if there is an open-circuit / loose contact 
Note: 
This information is provided in connection with the thermal shock protection