Err
or code
Diagnostic code
Meaning for the LMV37.4... system
Remedy
20
#
Pr
essur
e switch-min (Pmin)
0
No minimum gas /oil pr
essur
e
Check wiring for line interruption
1
Gas shortage – start pr
evention
Check wiring for line interruption
21
#
Pr
essur
e switch-max (Pmax) / POC
0
Pr
essur
e switch-max (Pmax):
Max. gas / oil pr
essur
e e
xceeded
POC:
POC open (softwar
e version
≤
V02.00)
Check wiring to see if ther
e is a line interruption.
POC: Check to see if the valve
’s closing contact is closed.
1
POC close (softwar
e version
≤
V02.00)
Check wiring.
Check to see if the valve
’s closing contact opens when the valve is contr
olled
64
POC open – start pr
evention (softwar
e version
≤
V02.00)
Check wiring.
Check whether valve
’s make contact opens when valve is contr
olled
22 OFF S
#
Safety loop / burner flange
0
Safety loop / burner flange open
1
Safety loop / burner flange open – start pr
evention
3
Safety loop/burner flange, e
xtr
aneous light – start pr
evention
5
Safety loop/burner flange, air pr
essur
e – start pr
evention
17
Safety loop/burner flange, combustion pr
essur
e – start pr
evention
19
Safety loop/burner flange, e
xtr
aneous light, combustion pr
essur
e –
start pr
evention
21
Safety loop/burner flange, air pr
essur
e, combustion pr
essur
e – start
pr
evention
23
Safety loop/burner flange, e
xtr
aneous light, air pr
essur
e, combustion
pr
essur
e – start pr
evention
65
Safety loop/burner flange, POC – start pr
evention
67
Safety loop/burner flange, e
xtr
aneous light, POC – start pr
evention
69
Safety loop/burner flange, air pr
essur
e, POC – start pr
evention
71
Safety loop/burner flange, e
xtr
aneous light, air pr
essur
e, POC – start
pr
evention
81
Safety loop/burner flange, combustion pr
essur
e, POC – start
pr
evention
83
Safety loop/burner flange, e
xtr
aneous light, combustion pr
essur
e,
POC – start pr
evention
85
Safety loop/burner flange, air pr
essur
e, combustion pr
essur
e, POC –
start pr
evention
87
Safety loop/burner flange, e
xtr
aneous light, air pr
essur
e, combustion
pr
essur
e, POC – start pr
evention
Summary of Contents for STG 146i/2
Page 34: ...34 Bentone 6 2 Wiring diagram...
Page 123: ......
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