Miele G1000 Technical Information page 209

G1000 / G2000 Dishwashers
5. Heating element defective (F25).
a. Replace the heating element
6. Heating relay defective (F25).
a. Check the heating relay solenoid voltage (12 VDC) from the
electronic unit.
b. If no voltage is present, replace the electronic unit.
c. Check the heating relay solenoid. Replace if necessary.
7. Excess quantity of detergent or rinse aid dispensed. Excess foam has
developed (F25).
a. Check the dispensed quantities of detergent and rinse aid. Follow
the information given in the operating instructions.
8. Heater pressure switch has reset during heating (F52). The program continues
from the wash block in which the fault is registered without
activated. The fault will only be indicated in the display or via LEDs at the end of
the program. The buzzer is then activated for 2 min.
The switching of the Heater pressure switch during the wash cycle may cause this
fault to occur. The causes and remedies are as follows:
a. Check for excess quantity of detergent or rinse aid dispensed.
Excess foam can cause a drop in water flow pressure, directly
affecting the Heater pressure switch. Clean out excess form and
follow the information given in the operating instructions.
Note
A check should also be made to ensure that the type of detergent used
matches the setting made, see Tab type or detergent setting. When, for
example, combination products (2 in 1 or 3 in 1 tablets) are used but the
Tab type has not been set, rinse aid will be dispensed twice.
b. Check for proper water level (just below the Filter assembly
locking arm) and circulation.
c. If circulation pressure is low, check the circulation pump for any
foreign objects that may be present. Clean or replace as
necessary.
d. If the water level is far below the filter assembly locking arm.
Check for items that may have tipped over and retained a large
quantity of water, e.g. in a bowl. Follow the loading information
given in the operating instructions.
e. If proper circulation is available, check connections at the heater
pressure switch and ST5 on the electronic board. If 120 VAC
power is present or intermittent, clean or replace the Heater
pressure switch as necessary.
209
Technical Information
the heating being