Bosch GWI-N Series Training And Service Information page 30

Component
ID
Description
12 Water flow sensor
Thermal Fuse
(actuation
11 temperature:
114ºC)
Air Box
13 temperature
NTC
Outlet water
14 temperature
NTC
Inlet water
15 temperature
NTC
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Measuring Wire
Colours
Red-Black GND
Yellow-Black GND
(pulse frequency ~Hz)
Multimeter for resistance measurement
R (Ω)
White cable – White cable
Table 14 – Electric Values
Operating Temperature (ºC)
-10
-5
0
5
10
15
20
6 720 814 719 SM FP_Australia 2017/04 EN
Value
5 V
DC
≈ 2.4 V
DC
Note: see table 11 to check
correspondence between water flow
Circuit open – Not Ok
(infinity – no continuity)
Circuit closed – Ok
(0 Ohm – continuity)
See corresponded values in table
See corresponded values in table
16 for 4000S or 17 for Optiflow
Resistance (KΩ)
1373
1034
784.7
600.0
462.1
358.4
279.9
Remarks
Control power
On: ≥ 1.9l/min
Off: ≤ 2.2/min
vs frequency signal
15