Electrolux FDR251RJR0, Руководство по обслуживанию

Страница: 9 / 35

8
1. Disconnect dishwasher from power supply. If water
continues to flow, close main water supply valve
and replace dishwasher valve.
2. If water turns off when power is disconnected,
check for welded contacts in timer or timer motor
that fails to advance. Replace timer. See REPLACE
TIMER in the SERVICE AND REPAIR section.
Water Level Too Low:
Water level should touch the heating element.
1. Check incoming water pressure: 20 P.S.I. is
minimum pressure for an adequate fill.
2. Check main water supply valve to make sure it is
fully open.
3. Check for a clogged screen in valve.
HEATING ELEMENT
The heating element maintains the water temperature
in the dishwasher during parts of the wash and rinse
cycles. Refer to the tech data sheet with the dishwasher
or the cycle chart in this manual to know in which cycles
the heater is energized. The heater also heats the air
during the static dry cycle.
To Check Heater:
1. Advance timer to dry cycle. Select Heated Dry on
the selector switch.
2. Close and latch dishwasher door.
3. Allow dishwasher to operate for one to two
minutes. Open door and note if heat is present.
CAUTION: DO NOT TOUCH THE HEATER!
THERMOSTAT
The thermostat mounted on the inner door panel on
some models gives the user the option of a high
temperature wash. On these models, the contact for
the timer motor will open in the second wash. The
dishwasher will pause until the thermostat closes at a
water temperature of 140°F. The thermostat senses the
temperature of the water as it falls down the inner door
panel.
To Check Thermostat:
1. Run hot water in sink
2. Place sensing lead from thermometer in sump of
dishwasher.
3. Set timer to Light Wash and select water heat on
selector switch.
4. Close door to start dishwasher.
5. Timer will stop and delay light will light. Check
temperature of water in sump. After water
temperature reaches 140°F, delay should go out
and timer advance.
6. If timer advances, thermostat is good.
FILL FUNNEL AND AIR GAP ASSEMBLE
The fill funnel and air gap assemble is molded onto the
left side of the tub. It’s purpose is to provide a method
of supplying water to the tub in the wash and rinse cycles
through an air gap, as required by plumbing codes. The
air gap prevents the siphoning of wash water back into
the water supply system, should the water pressure drop
to less than atmospheric pressure. This air gap should
not be stopped up or covered in any way.
MOTOR START RELAY
The motor start relay has a normally open contact in
series with the motor start windings. The relay coil is
connected in series with the motor main winding. At start
up, the high current draw of the main winding passing
through the relay coil causes the contacts to close. This
sends current back to the timer and the timer directs
this current to the apricot start winding in the motor.
When the motor attains normal speed, the current draw
drops to normal and the relay contacts reopen, taking
the start winding out of the circuit. The motor start relay
is mounted on the dishwasher door hinge, weld
assembly, behind the service panel.
To Test the Relay:
1. Disconnect dishwasher from power supply.
2. Remove service panel.
3. Remove electrical leads from motor start relay.
4. Check relay coil for continuity across terminals L
and M. Replace if open.
Water Will Not Shut Off:
NOTE:
This relay is position sensitive, which
means that when energized, the contacts are
pulled up to close, and are opened by gravity.
5. To check contacts L and S, remove screw securing
motor start relay.
6. Turn relay upside down and check contacts for
continuity. They should be closed, indicating
continuity in this position and infinite continuity when
relay is right side up.
7. If not, jumper out thermostat to see if timer
advances. If timer advances, thermostat did not
close. Replace thermostat.