Frigidaire FDB421RFS3 User guide

Remedy
1. Replace fuse or reset breaker.
2. Repair or replace wire fasteners at
dishwasher junction box.
3. Replace timer.
4. Replace motor/impeller assembly.
5. Replace door switch.
6. Replace latch assembly.
7. Replace selector switch.
1. Replace motor.
2. Rotate motor fan or impeller.
1. Check voltage.
2. Rotate motor fan or impeller, or
replace.
3. Clear blockage or replace.
4. Replace motor/impeller assembly.
5. Clean and clear blockage.
1. Replace heater element.
2. Replace timer.
3. Repair or replace.
4. Replace thermostat.
1. Replace dispenser.
2. Replace timer.
3. Repair or replace.
4. Replace dispenser.
5. Replace actuator.
1. Clear restrictions.
2. Replace timer.
3. Replace pump.
4. Make sure hose is attached in proper
position on side of tub.
5. Check for blockage, clear.
6. Replace windings.
1. Turn water supply on.
2. Replace water inlet fill valve.
3. Disassemble and clean screen.
4. Repair or replace.
5. Replace timer.
6. Repair or replace.
7. Clean float.
1. Replace timer.
2. Repair or replace timer.
3. Repair or adjust.
4. Replace or adjust position of
thermostat.
1. Repair to proper height.
2. Install air gap at counter top.
3. Reattach drain hose.
1. Instruct customer/user.
2. Instruct customer/user.
3. Instruct customer/user on proper
loading of dishes.
4. Incomingwatertemperatureof120°F
is required to properly dissolve
dishwashing detergents.
Trouble Shooting TipsExploded View of Wash System
Tub and Door Seal
The door seal is pressed into the tub channel for
aninterference fit.Centerthegasket(marked on
back) at the tub top center and press in place
Product Specifications
Electrical
Rating .................................. 120 Volts, 60Hz
Separate Circuit..15 amp min.- 20 amp max.
Motor (HP).................................................1/12
Motor (Amps) ........................................... 3.4
Heater Wattage ....................................... 900
Total Amps (load rated) ......................... 11.0
TempAssure (some models)........117°F±5°F
(47°C±3°C) [with outer door in place]
TempBoost (some models)......127°F (53°C)
Heated Wash/Heated Rinse
Hi-Limit Thermostat..................200°F (93°C)
Water Supply
Suggested minimum incoming water
temperature ..............................120°F (49°C)
Pressure (PSI) min./max. ...................20/120
Connection (NPT)......................................3/8"
Consumption (Normal Cycle) ........................
......... 6.0 U.S. gal., 5.0 Imp. gal., 22.7 liters
Water valve flow rate (U.S. GPM) .......... .83
Water recirculation rate (U.S. GPM)..............
.................................................... approx. 12
Water fill time.....................................87 sec.
Detergent and Rinse Aid Dispenser
The detergent and rinse aid dispenser is a one
piece component consisting of a molded
detergent cup and a built-in rinse aid dispenser.
Thedetergentcuphasaspringloadedcoverand
the rinse aid dispenser has a removable cover.
Liquid rinse aid is added to the dispenser up to
the fill line indicator. The amount of rinse aid
released can be adjusted by turning the arrow
indicator from one, being the least amount, to
four, being the greatest amount.
To replace dispenser:
• shut off electricity to dishwasher,
• remove outer door panel assembly,
• disconnect wiring to the actuator,
• remove the six screws,
• remove the dispenser,
• replace and reinstall screws,
• rewire actuator.
To replace actuator:
• shut off electricity to dishwasher,
• disconnect wiring to the actuator,
• place a flat head screwdriver under the
actuator body and between the dispenser
housing and terminal side, twist and lift up
on the actuator being careful not to damage
the retainer snap-fits,
• replace with new actuator by pressing into
place,
• rewire actuator.
Standard Dry Air Flow
Whenthe controladvancestothe“dry”portionof
thecycle,alinearactuatorretractsavalve,which
opens a vent path through the console into the
kitchen.This venting method eliminates
discharging heated moisture into the motor
compartment. The heated, moist air leaving the
dishwasher through the console vent causes
drierairto bedrawninto theunitby wayofintake
vents located at the bottom of the door. The
water on the dishes is evaporated into drier air
and the venting process continues. The heating
element is turned ON and OFF during the entire
drying cycle.
Power Dry Air Flow
The Power Dry configuration is the same as the
Standardexceptithasacrossflowblowerlocated
in the air discharge path. The blower assists the
heating element in producing power to drive the
moist air out of the dishwasher.
Check the Following
1. Fuse (blown or tripped).
2. 120 VAC supply wiring connection
faulty.
3. Timer (contacts open or defective)
4. Motor (inoperative, check
resistances).
5. Door switch (open contacts).
6. Door latch not making contact with
door switch.
7. Selector switch (open contacts).
1. Motor (bad bearings or locked
rotor).
2. Motor stuck due to prolonged
non-use.
1. Improper voltage.
2. Seal faces binding.
3. Motor shaft binding.
4. Motor windings shorted.
5. Glass or foreign items in pump.
1. Heater element (open).
2. Timer defective.
3. Wiring or terminal defective.
4. Hi-limit thermostat defective.
1. Latch mechanism defective.
2. Timer contact defective.
3. Wiring or terminal defective.
4. Broken spring(s).
5. Defective actuator.
1. Drain restricted.
2. Timer contact defective.
3. Defective drain pump.
4. Air lock in drain hose.
5. Blocked impeller.
6. Open windings.
1. Water supply turned off.
2. Defective water inlet fill valve.
3. Check fill valve screen for
obstructions.
4. Defective float switch.
5. Timer contact defective.
6. Wiring defective.
7. Float stuck in “UP” position.
1. Timer motor (stalled or open.)
2. Check timer for power to timer
motor.
3. Timer shaft binding to or knob
interference with escutcheon.
4. TempBoost thermostat defective.
1. Drain hose (high) loop too low.
2. Drain line connected to a floor
drain not vented.
3. Drain hose not connected to side
of tub.
1. Detergent allowed to stand too
long in dispenser.
2. Dispenser wet when detergent was
added.
3. Detergent cover held closed or
blocked by large dishes.
4. Improper incoming water
temperature to properly dissolve
detergent.
5. See "Detergent cover will not
open."
Always disconnect the dishwasher from the electrical power source before adjusting or
replacing components.
Personal Injury Hazard
Nozzle
Funnel
Nut
Funnel Base
Center Spray Arm
Lower Spray Arm
Delivery Tube
Connector Hose
Sump
Impeller Screw
Water Valve
Water Inlet Tube
Impeller
Seal Check Ball
Circulation Motor
Motor Bracket
900 Watt Heater
Refer to the cycle chart on the reverse side to
determinewhen theheaterisonduring thewash
cycle. The heater cycles ON and OFF for brief
periods during the drying cycle.
Voltage checks of the heater should be made
with the timer set in the main wash.
airlock.Thedrainlooponthesideofthetubmust
be kept in place after servicing.
The main pump can easily be removed by
disconnecting the upper spray arm supply tube,
the drain pump connector hose, and the wiring
harness connections made at the circulation
motorand thewaterheat thermostatslocated on
the bottom of the pump.
Once the pump assembly is removed from the
dishwasher,themotor/impellerassemblycan be
removed from the sump by taking out the three
(3) T-20 Torx head screws from the aluminum
motor bracket and then the three (3) T-20 Torx
headscrews fromthe volutecover. Usingalarge
flat head screwdriver inserted between the
impellerscrewand thesump’svolute, themotor/
impeller assembly can be gently pried out of the
sump. Use the screwdriver as a lever.
Pump Assembly
The pump assembly is driven by a 1/12 HP,
shaded pole motor. Rotation is in the
counterclockwisedirectionat3100to3200RPM.
The motor drives a pump which supplies 100
percent filtered water at a rate to approximately
12 GPM to one spray arm at a time. The spray
arm’s operation is alternated by small “pauses”
of the motor during the wash cycle.
Draining is accomplished by using a small
separate synchronous drain pump mounted to
thesideofthesump.Thedrainpumpisconnected
to the main pump by a small rubber hose. The
draincheckvalveislocatedattheentrancetothe
drain pump. The drain hose is attached by a
worm gear clamp to the discharge of the drain
pump.Thedrainis then routed upthesideof the
dishwasher and attached to the side of the tub.
This drain loop insures that an air pocket cannot
formnearthe drainpump andcausethe pumpto
Symptom
Dishwasher will not operate when
turned on (wait at least 90
seconds).
Motor hums but will not start or
run.
Motor trips out on internal thermal
overload protector.
Dishwasher runs but will not heat.
Detergent cover will not latch or
open.
Dishwasher will not pump out.
Dishwasher will not fill with water.
Timer does not advance.
Dishwasher water siphons out.
Detergent left in dispenser.
withoutstretching orbunching. Thegasket takes
a short turn at the bottom of the tub channel
before ending at the channel end wall.
Tub
Interior
Mounting
Rib
Gasket Cross Section
Short Turn
Incoming Water Supply
Drain Hose
Spray Arm
Support
Glass Trap
Heating
Element
Filter
Soil Director
Volute Cover
Drain Motor
961106
Macerator
Barrel Front
Barrel Rear