Service - Bosch GWI-N Series Training And Service Information

Main solenoid valve
8
(SV1)
9 Solenoid valve (SV3)
10 Solenoid valve (SV2)
In order to ensure a correct start up of the appliance and a correct function after any intervention on the
appliance, the installation manual must be read and instructions and main functions must be explained to the
end user.
Table 16 indicates the method and values for testing the main components function and, consequently,
ensure a correct and safe operation of the appliance.

6. Service

When replacing the control unit, configurations need to be checked and set accordingly.
Attention:
Control units are supplied as spare part with following default values:
- 20 = Natural Gas (see P7)
- 12 = 12 liters appliance operation (see AP on P4)
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~ 20.4 – 24 V
Blue-Blue
Black-Black
White-White
Table 18 – Measurements and values
SV2 – White Wires
SV3 – Black Wires
MV1 – Red Wires
Pict.44 – Gas Valve Solenoids
6 720 814 719 SM FP_Australia 2017/04 EN
(open)
DC
0 – 3.6 V (close)
Resistance ~ 99.7 Ω
~ 20.4 – 24 V
DC
0 – 3.6 V (close)
Resistance ~ 100.3 Ω
~ 20.4 – 24 V
DC
0 – 3.6 V (close)
DC
Resistance ~ 100.4 Ω
SV1 – Blue Wires
Inlet Safety Valve
Burner Segment 2
Burner Segment 1