Frigidaire FDB2410HIB - Full Console Dishwasher, Обслуживание, Страница: 30 / 52

Section 3 Electronic Control And Testing
3-6
The Electronic Control System
The electronic control system consists of:
1. The control board
2. The selector switch board
3. Temperature thermistor
4. Rinse aid sensor.
In operation, the selector switch board and the two
sensors, input information to the electronic control to
program a cycle and operate the dishwasher.
Electronic Control
The electronic control has the total control of the
dishwasher once a cycle is started. The control receives
power from two sources, the first is the junction box.
The junction box connection is located on the control
board and can be checked at the P-3 connector at pins
#6 - black wire, and #7 - white wire. (See Figure 3-8)
Power from the junction box powers the transformer.
This supplies the 12 volts to operate the control system
and allows the control to be powered up if the dish-
washer door is opened or closed. This transformer is
mounted on the board and can not be replaced with out
replacing the control board.
The second power source comes from the door switch.
This is located at the black wire on the P-1 terminal and
is redirected by the control to operate all of the electrical
components in the dishwasher.
P1 Terminal
Connection From
Door Switch
P-3 Connector
Figure 3-8.
Figure 3-7.
Drain Pump Exit
with Check Valve
Drain Pump Operation and Checks
The drain pump is mounted to the right side frame facing
forward. A hose from the bottom of the sump is attached
to the front of the drain pump. The discharge of the drain
pump has a fl apper check valve to prevent drain water
from backing into the tub when the dishwasher is idle.
The drain motor is a wet rotor magnet induction design
and is dual directional to help prevent blockage and lock-
ing up of the impeller by foreign material entering the
pump.
The dishwasher may need to be pulled forward to access
the drain pump. If the pump is restricted, the inlet can
be removed to clean the impeller.
To check the drain pump:
The drain pump operates on 120 VAC current. The drain
pump motor, when checked for resistance at the wire
terminal connections should be 24 ohms.
(See Figure 3-7)
Wire Terminal
Connections
Mounting Bracket
Drain Pump Inlet