Test Actuators / Test Output Signals; Test Temperature Sensor Booster Heater; Function Check Service Switch - Kärcher HDS 9/50 De Tr1 Service Manual

8.7.4

Test actuators / test output signals

NOTE
In order to change between the actuators, keep the service
switch on "SET" for one second.
In order to operate the selected actuator, set the service
switch to level "4".
Display
40?
8.7.5

Test temperature sensor booster heater

Display
45?
8.7.6

Function check service switch

Display
50?
36
English 5.906-736.0 Rev. 00 (07/15)
Explanation
Manual switch-on/off of the following actuators:
A: Valve detergent (Y2)
–
Valve is activated
B: Contactor release (K7)
–
C: Relay solenoid valve fuel (Y3)
–
D: Contactor blower motor (K8)
–
Blower motor is running
E: Valve liquid softener (Y4)
–
Periodic switching of the valve, in order to avoid
overload of the electronics.
Explanation
Test temperature sensor Indication temperature.
Explanation
Select all positions at the service switch and check
the corresponding indications on the display.
Remark
NOTE
With actuator test "C" the
check can only take place
via the clearly audible
switching of the relay on the
printed circuit board A1. As
the solenoid valve fuel is in
the safety chain, further cri-
teria for activation must be
fulfilled. However, these are
not fulfilled in the actuator
test, so that the actual
switching of the solenoid
valve cannot be tested.
Remark
0°C is displayed when the
temperature is below 0°C.
NOTE
With the fault cable break or
short circuit, the switch-off
takes place with fault mes-
sage 10.
Remark