Fisher & Paykel GWL03US, Руководство по обслуживанию

Страница: 12 / 75

12
5.1.3 MOTOR CONTROLLER MODULE
The Motor Controller Module contains the circuits needed to control the water valves, pump and
the main motor. It contains a microprocessor that controls these functions as well as accepting
signals from the Rotor Position Sensor and Display Module. The Motor Controller Module and
Display Module are continuously communicating with each other, passing information back and
forth on the required wash actions and diagnostic data.
5.1.4 DISPLAY MODULE
The Display Module contains a second microprocessor. The Display Module takes the inputs from
the front panel (i.e. user settings) and sends a command to the Motor Controller Module. It also
controls the output to the LED’s and beeper.
5.1.5 PRESSURE SENSOR
The Pressure sensor is located inside the Motor Controller Module. Unlike normal pressure
switches it does not contain contacts, but an electronic circuit that continuously measures the water
level. The pressure sensor cannot be removed from the Motor Controller for servicing.
5.1.6 INLET CHAMBER
The inlet chamber serves two purposes;
a)
As a reservoir for the cooling water. The electronics in the Motor Controller Module are cooled
by water. The inlet Chamber is connected to an aluminium heatsink, which is part of the Motor
Controller Module. During the fill cycles, water flows through one side of the inlet chamber,
through one side of the heatsink back on the other side through the second chamber of the inlet
chamber and then into the tub.
Note: Should the electronics become too hot, the cold valve will be turned on to fill the heatsink
with cold water. Therefore, a small quantity of water may be discharged into the basket during the
cycle. This is normal and not a fault.
b) To mix the incoming hot and cold water. This is part of the automatic wash water temperature
system. For this to work effectively the incoming water has to be mixed before entering the
Motor Controller Module. The water temperature is measured by a device located within the
Motor Controller Module. The water valves are then controlled to maintain the correct water
temperature into the tub.