Foerster TAK5-CH1-25, Instruction Manual

Page: 178 / 226

178 Failures and warnings
12.1.9 Boiler temperature sensor
If the temperature sensor in the boiler is defective, the failure
message on the right is displayed.
•
If in boiler or/and mixer 0.0 °C is displayed, it can be as-
sumed that the data line is interrupted. If 99.9 °C is displayed,
it can be assumed that a short circuit occured.
Exclusively for service personnel:
> Remove the plug from the motherboard and measure the re-
sistance of the sensor.
> If the measured value deviates from the value contained in
the table, the sensor must be replaced (see wiring diagram of
the machine).
12.1.10 Milk/circulation valve
If the failure milk/circ. valve is displayed, it can be assumed that
the milk valve or the circulation valve is untight.
1. Carry out a function and visual check of both valves.
2. In milk pump start? press . If, after the pump has start-
ed, some liquid flows out of the milk/water outlet, one of the
two valves is untight.
3. Let service personnel check and replace the valves, if neces-
sary.
4. Once the failure has been removed, in delete failure? press
.
5. Secure the metal covering and close the lat-
eral door.
6. Only then, plug in the mains plug or turn the
main switch to position ON.
failure
boiler sensor
boiler sensor
boiler: xx.x
o
C
mixer: xx.x
o
C
failure
milk/circ. valve
milk/circ. valve
milk pump: start?
milk: start?
cleaning: start?