service data sheet
SERVICE DATA SHEET
Fully Integrated Stainless Steel Dishwasher
Model #: EDW5500DSS
EHP Part #. 165 400 716
Inline Heater
The heater is 1200W and will only energize during a wash cycle when the wash
motor is on. Water is heated as it passes through the heater. The heater has a
thermal limiter set at 200°F and will reset once the temperature falls to ~170°F.
Smart Sensor
The dishwasher controller uses a 10KΩ thermistor to monitor the temperature of
the water in the dishwasher. The turbidity or soil sensor consists of an infrared
emitter and detector. The emitter is supplied a DC voltage. The detector output
voltage ranges from 0 – 4 V dc. Where a 0 V output corresponds to dirty water.
Dry Fan
When the drying portion of the wash cycle is reached, the dishwasher controller
activates the drying fan. The motor forces saturated air across cool baffles in the
condensate duct, resulting in the removal of moisture from the air. The cooler air
and condensed water is returned to the tub through the condensate vent (air vent).
Detergent and Rinse Aid Dispenser
The dispenser consists of both a detergent and rinse aid dispenser in one housing,
controlled by the use of a wax motor actuator. The first time the actuator is
energized in the cycle detergent is dispensed. The second time the actuator is
energized the rinse aid is dispensed.
The rinse aid can be adjusted to meet the customer’s needs. This is done by
removing the cap from the dispenser and adjusting the arrow inside to a higher
number to increase the amount of rinse aid dispensed during the cycle. A sensor
triggers the dishwasher controller to display “LO” when the rinse aid level is low.
The indicator will display “LO” for 5 cycles then switch off if rinse aid is not added.
This only affects the drying performance and does not effect the operation of the
dishwasher.
Pressure Switch Assembly
The pressure switch assembly consists of a low water level switch and a high level
switch. The low level switch is used to maintain the water level in the sump for the
fill cycles. The high-level pressure switch is a back-up or safety switch and is
connected in series with the drain pump. If the low level switch fails and too much
water is added, the high-pressure switch activates and the drain pump will be
energized. The pressure switches can be easily replaced by sliding them from the
plastic support.
Fan
The dishwasher controller monitors the speed of the wash motor through a
tachometer mounted on the rear of the motor. The tachometer is an AC generator,
which provides feedback to the dishwasher controller for regulating the motor
speed.
Dispenser
Wash Motor
The wash motor is a permanent split capacitor motor that operates on 120V ac
60Hz and maximum current draw is 1.8A. The wash motor has speed control and
is run at different speeds during different parts of the cycle. The speed is varied by
the dishwasher controller and the wash motor operates between 310 – 2800 RPM..
1
0
0
0
1
0
Description
To check the various components used in the dishwasher, the first step is to
remove the outer door and expose the dishwasher controller.
NOTE: The inner door has sharp edges, be careful when removing the
outer door.
120°F (49°C)
20 – 120 PSI
3/8 “
4.9 – 7.3 U.S Gal.
18.5 – 30 L
1.08
67 s
Heater
120V, 60 Hz
15 amp min. – 20 amp max
1.8 A
1200 W
12 A
Drain Pump
Checking the components of the dishwasher
Wash Motor
Water valve flow rate (U.S GPM)
Water fill time (Static Fill)
The Water / Service test is a special function used to step through the various
functions of the dishwasher. To enter the water / service test hold down the High
Temp & Start buttons together for three seconds while the dishwasher is in idle
mode. The dishwasher will start the water / service test stepping through the test
cycle per the chart below. Pushing the Start / Cancel button will advance the
dishwasher to the next step.
Water Valve
Water Supply
Suggested minimum incoming water
Temperature
Pressure (min - max)
Connection (NPT)
Consumption (Normal Cycle)
Exploded View of Door Assembly
Time
Product Specifications
Electrical
Rating
Separate Circuit
Wash Motor (current)
Heater Power
Total Current (Load Rated)
Inlet Water Valve
The inlet water valve is an electronically controlled shut off valve that is used to
allow water to enter the dishwasher. The valve has a flow restrictor to regulate
the water flow to 1.08 GPM at an operating water pressure of 20 – 120 psi. The
inlet valve is wired to the dishwasher controller and is opened and closed by the
control.
Water / Service Test
Step
NOTE: The information contained in the service data sheet is intended for use by
persons having electrical and mechanical training and a level of knowledge of
these subjects generally considered acceptable in the appliance repair trade.
Electrolux Home Products Inc cannot be responsible, nor assume any liability for
injury or damage of any kind arising from the use of this data sheet.
Drain Pump
The dishwasher contains an independent drain pump. It is of a wet rotor design
to prevent leaks. The drain pump is mounted directly to the rear of the sump.
The pump cover can be removed for cleaning. The discharge end of the pump
has a check valve to prevent water and odours from entering the dishwasher
from the house drain system. The intake of the pump is connected to the sump
by a short connecting hose.
Once the dishwasher controller is exposed the following table can be used to
check the dishwasher components using a multi meter and measuring the
resistance of the various components.
Component Name
Wash Motor
Wash Motor Tachometer
Drain Pump
Inlet Valve
Dispenser
Thermistor
Dry Fan
Component
Connector locations
P3-4 & P-1
P3-10 & P3-11
P3-6 & P3-8
P3-5 & P3-8
P3-2 & P3-8
P2-7 & P2-6
P3-3 & P3-8
Resistance (Ω)
14
246
26
1126
1665
10000
2088
Operation of the Dishwasher
To operate the machine please refer to the Use & Care Manual.
1
Fill/Dispense
59
2
Fill/Dispense/Wash
21
*
1
0
0
1
0
3
Wash/Heat
45
0
1
0
1
0
0
4
Pause
0.6
0
0
0
0
0
0
5
Wash/Heat
75
0
1
0
1
0
0
6
Wash/Heat/Dispense
80
0
1
0
1
1
0
7
Drain
90
0
0
1
0
0
0
8
Dry
90
0
0
1
0
0
1
460.6
* Dynamic fill, valve is open until pressure switch is closed
Serviceability of Parts
a) The following parts can be serviced or replaced by removing the front cover
access panel. To remove the access panel, undo the screw holding the junction
box cover. Disconnect the mains power from the dishwasher. Remove the four
screws securing the access panel to the dishwasher.
● SMART SENSOR
Is located on the right hand side of the sump. It is clipped into place by the sump.
Static Fill
At the start of each cycle the dishwasher begins with a fill. The drain pump will
operate for 30 seconds to remove any water in the dishwasher. Next the inlet
valve is energized for a timed fill (67 s). During this fill period the level pressure
switch will set at ~22 seconds then continue filling until the timed fill ends.
● PRESSURE SWITCH ASSEMBLY
The pressure switch assembly is located on the right hand side of the
dishwasher closest to the wrap. With the front cover access panel removed it is
possible to replace or service the individual pressure switches (Not the entire
assembly). By sliding the switches down (towards the ground) they will be
released from the pressure switch support.
Dynamic Fill
The inlet valve is energized and the dishwasher begins to fill. Once the level
pressure switch is set the wash motor starts. The motor will operate at low
speed (310 RPM) then increase speed at a rate of 100 RPM per second until it
reaches a maximum speed of 2800 RPM.
● WATER INLET VALVE
The water inlet valve is located on the left hand side of the dishwasher secured
to the side plate with two screws. By removing these screws the water inlet
valve can be removed.
Display Codes (readout)
LO
PF
HO
CL
’01 – 24
CF
Low liquid in the rinse aid dispenser
A power failure has occurred
Water heating delay
Close and latch the door
Hour(s) delay befor the dishwasher will start.
Clean Filters
Display Codes (LED)
SANITIZED
The sanitized criteria has been met. Indicatior light will
switch off when the door is opened.
b) To service the wash motor, drain pump, inline heater and fan dry unit, the
dishwasher must be disconnected and removed from the enclosure. Carefully
lay the dishwasher on its back to service the wash motor, drain pump and inline
heater.
c) To service / replace the fan dry
unit the outer wrap must be
removed from the dishwasher.
Filtration System
To clean the filters rotate the cup
by the handle counter-clockwise
90 degrees and lift out. The
stainless steel primary filter can
then be removed and cleaned.
Ensure that there is no food or
obstructions in the filters before
replacing.
Exploded View of the Hydraulic System
Trouble Shooting Tips
Wash Cycle Data
WARNING
Personal Injury Hazard
Always disconnect the dishwasher from the electrical power source before adjusting or replacing components
Symptom
Check the Following
Remedy
Dishwasher will not operate
when turned of
1. Fuse (blown or tripped)
2. 120 VAC supply wiring connection faulty.
3. Electronic control board defective
4. No 12 VAC power to control
5. Motor (inoperative).
6. Door switch (open contacts)
7. Door latch not making contact with door switch
8. Touch pad circuit defective
9. No indicator lamps illuminate when START or
OPTIONS are pressed
1. Replace fuse or reset the breaker
2. Repair or replace wire fasteners at dishwasher
junction box.
3. Replace control board
4. Replace control board
5. Replace motor / impeller assembly
6. Replace latch assembly
7. Replace latch assembly
8. Replace touch pad assembly
9. Replace touch pad assembly
Motor hums but will not
start or run.
1. Motor (bad bearings)
2. Motor stuck due to prolonged non-use
1. Replace motor assembly.
2. Rotate motor impeller
Motor trips out on internal
thermal overload protector
1. Improper voltage
2. Motor windings shorted (check winding resistance)
3. Glass or foreign items in the pump
1. Check voltage
2. Replace motor / impeller assembly
3. Clean and clear the blockage
Dishwasher runs but will
not heat
1. Heater element (open).
2. Electronic control board defective
3. Wiring or terminal defective
4. Hi-limit thermostat defective
1. Replace heater element
2. Replace control board
3. Repair or replace
4. Replace heater element
Detergent cover will not
latch or open
1. Latch mechanism defective
2. Electronic control board defective
3. Wiring or terminal defective
4. Broken spring(s)
5. Defective actuator
1. Replace dispenser
2. Replace control board
3. Repair or replace
4. Replace dispenser
5. Replace dispenser
Dishwasher will not pump
out
1. Drain restricted
2. Electronic control board defective
3. Wiring or terminal defective
4. Defective drain pump
5. Blocked impeller
6. Open windings
1. Clear restrictions
2. Replace control board
3. Repair or replace
4. Replace drain pump
5. Check for blockage, clear
6. Replace drain pump
Dishwasher will not fill with
water
1. Water supply turned off
2. Defective water inlet valve
3. Check fill valve screen for obstructions
4. Electronic control board defective
5. Wiring or terminal defective
1. Turn water supply on
2. Replace water inlet valve
3. Disassemble and clean screen
4. Replace electronic control board
5. Repair or replace
Dishwasher water siphons
out
1. Drain hose (high) loop too low.
2. Drain line connected to a floor drain not vented
1.Repair to proper 32-inch minimum height
2. Install air gap at counter top.
Detergent left in dispenser
1. Detergent allowed to stand to long in the dispenser
2. Dispenser wet when detergent was added to the
dispenser
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 latch or open
1. Instruct customer / user
2. Instruct customer / user
3. Instruct customer / user on proper loading of dishes
4. Incoming water temperature of 120°F is required to
properly dissolve dishwashing detergents
Wiring Diagram
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