English
5.906-732.0 Rev. 00 (12/14)
25
The first specification refers to the voltage input and the
second to the COM input on the measuring device.
(e.g. pin 1 + pin 2 --> voltage input at pin 1 and COM input
at pin 2).
Here the mains voltage is defined as the provided voltage
in the relevant country (+/- 10%).
CAUTION
The following measurements may only be performed by a
certified electrician.
Measurements with connection to mains voltage
Measurements without connection to mains voltage
Voltage measurement
Measurement
Component
Nominal measuring value
X1 + X5 + X6 + X7 Earth on the PCB
< 1 VAC
X11 + X12
Reset key - Descaling
0 VDC
5 VDC (+/- 20%)
Switch 3 operated
Switch 3 not operated
X2 + X1
Indicator lamp - heating (yellow)
0 VAC
Mains voltage
Switch 2 not operated
Switch 2 operated
X8 + X6
Supply of the pump
0 VAC
194 VAC (+/- 20%)
Pump off
Pump on
X13 + X1
Indicator lamp - Descaling (white)
0 VAC - 50 VAC
Mains voltage
Indicator light off
Indicator light on
X14 + X1
Indicator lamp "water shortage" red 0 VAC - 50 VAC
Mains voltage
Indicator light off
Indicator light on
X3/X9 + X10
Low-voltage supply
0 VAC
30 VAC (+/- 20%)
Switch 2 not operated
Switch 2 operated
Measurement
Component
Nominal measuring value
A3 + A6
Resistor
< 50k
Ohm
Water in the tank
X15 pin1 + X15
pin3
Perform the continuity test.
Continuity
No continuity
Switch pressed
Switch not pressed