Download Danby DDW1802 Service manual

Danby Products Ltd.
DDW1802 DDW1805
SERVICE MANUAL
INDEX
1. PRODUCT SPECIFICATIONS
2. SCHEMATIC DIAGRAM
3. WIRING DIAGRAM
4. TIMER CYCLE CHART
5. COMPONENT OPERATION AND REPAIR
6. TROUBLE SHOOTING
7. PARTS LIST AND DIAGRAM
SPECIFICATION
MODEL
Rating
Motor (HP)
Motor (Amps)
Heater Wattage
Wash
Total Amps (Load Rated)
Thermostat Contacts
Close at
DDW1802 and
ELECTRICAL
120V 60Hz
1/5
1000W
9.2A
127°F ±5°F
58 ±3
WATER SUPPLY
Suggested Min. Incoming Water 120°F to 150°F
Temperature
49 to 66
Pressure (PSI) Minimum/Maximum
15/120 PSI
Connection (NPT)
3/8”
Consumption (Toil Gallons)
3.5±5%
Water Valve Flow Rate (GPM)
1.08GPM±10%
DDW1805
CLn Cont act of t i mer
D/ Ed Di spenser
EV1 Sol enoi d
EV2 Wat er sof t ener
I AQS Over f l ow swi t ch
Power Swi t ch
IG
Door swi t ch
IS
I SS Reed swi t ch
I TR Ther most at of heat er
Power on l i ght
LS
LSS Sal t war ni ng l i ght
Wash pump
ML
Ti mer
MT
Pr essur e swi t ch
P0
Dr ai n pump
PS
Heat er
R
Ther most at of pump
S
T45 45℃ Ther most at
T58 58℃ Ther most at
RAPI D Rapi d wash
PLUS I nt ensi ve wash
I SB Reed swi t ch
LSB Ri nse ai d war ni ng l i ght
CODE NAME OF COMPONENT
AC220- 230V/ 50Hz
N
F
LS
I SB I SS
LSB LSS
3
1
2
EV2
b
a
B2 B5
a
b
B7 B1
b
B6
EV1
B3
CL7
B3
3
CL8
1
B8
2
P1
CL6
I AQS
A10
b
PS
S
A8
CL1
A9
a
IS
A8
CL2
A6
b
4
PLUS
5
4
A7
a
6
1
A1
b
3
A3
CL3
A5
b
1
RAPI D
T58
MT
A3
D/ Ed
CL4
A2
a
PLUS3
2
T45
6
a
RAPI D
L
IG
DDW1802W AND DDW1805W Sch em at ic Diagr am of Dish wash er
A4
a
C
C3
C3
b
C5
ML
S
a
C4
R
a
CL9 CL10
I TR( 78)
b
C1
L
G
N
Power Swi t ch
Bl ue
Whi t e
Whi t e
Or ange
Bl ack
Bl ue
Over f l ow Swi t ch
Pi nk
Pur pl e
Br one
Bl ack
Gr ey
Sal t
Det ect i on
Swi t ch
Wat er Sof t ener Val ve
Sky- bl ue
Ri nse Ai d
Det ect i on
Swi t ch
Bl ue
Bl ack
Power
Ri nse
No Sal t
I ndi ct or I ndi ct or
Ai d
I ndi cat or
Br one
Sky- bl ue
Sky- bl ue
Br one
Pur pl e
Pi nk
Whi t e
C 5
B 5
4 3
4 3
6
2 1
2 1
6
2 1
8 7
4 3
B 10 9
A 5
8 7
Ti mer
A 10 9
Red
Red
Bl ue
Br one
Pur pl e
Whi t e
Whi t e
58℃ Swi t ch
Sky- bl ue
Bl ue
Bl ack
Heat er
78℃ Swi t ch
Bl ack
Economi c Wash Swi t ch
Pi nk
Rapi d Wash Swi t ch
Sky- bl ue
Di spenser
Red
Red
Or ange
Br one
Temi nal
Pi nk
Bl ue
Red
Wat er - l evel Swi t ch
Whi t e
Door Swi t ch
Whi t e
DDW1802W AND DDW1805W Wi r i ng Di agr am of Di shwasher
Wash pump
I nl et Val ve
Dr ai n Pump
45℃ Swi t ch
Whi t e
Bl ue
ci
pa
Ca
r
to
1
2
5
4
1
9
6
7
5
Fi xed Movi ng
Cont . Cont .
A
A
A
A
B
B
B
B
C
C
STEP
TI ME OF PROGRAMME
Wash Pump
Heat er
T45
Level
T58
T45
EV1 Fi l l
Ti mer Empt y Level
EV2 Regener at i on
EV1 Ref i l l
Ext r a Dr ai n
Ti mer Empt y Level
Det er gent
Ri nse Ai d
Ther most at
Ti mer Ful l
Ther most at
Ther most at
5
2
10
3
15
20
25
30
35
V+15″
P+15″
P+5. 5′
T+1′
5. 5′
V+90″ / 2′
P+15″
P+5. 25′
T+30″
5. 5′
5. 5′
5. 5′
V+2′
P+15″
P+5. 25′
30″
P+15″
5. 25′
V+90″
P+15″
P+5. 25′
5. 5′
T+15″
T+5. 25′
5. 5′
5. 5′
V+90″
15″
V+45″
1′
15″
15″
30″
1′
1′
----
PROGRAMME FUNCTI ON 1
Dr ai n
V- - - - Reset t i ng of Pr essur e Swi t ch
P- - - - Set t i ng of Pr essur e Swi t ch
T- - - - Set t i ng of Ther most at
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
Fi xed Movi ng
Cont . Cont .
10
9
6
7
5
4
1
2
SPECIFICATION:
CAM
No.
1
2
3
4
5
6
7
8
9
10
CAM
No.
60
45
50
5
55
40
V+15″
P+15″
P+5. 5′
T+30″
V+90″
P+15″
P+5. 25′
7. 5″
97. 5″
T+5. 25′
5. 5′
V+1′
15″
V+45″
30″
15″
----
4
Dr ai n
I nl et
I nl et +Wash+Det er gent
Wash+Heat ( 45/ 58)
Dr ai n
I nl et
I nl et +Wash
Wash+Heat +I nl et
Wash+Heat +Regener at e
Wash+Heat +Br i l l i ant ( 58)
Pause
Dr ai n
I nl et
Dr ai n
I nl et
Dr ai n
St op
P+15″
P+5. 25′
V+90″
----
DDW1802W AND DDW1805W Pr ogr ame Cycl e of Di shwasher
Dr ai n
I nl et
I nl et +Wash
Wash+Heat ( 45)
Wash
Dr ai n
I nl et
I nl et +Wash+Det er gent
Wash+Heat
Wash
Wash
Wash
Dr ai n
I nl et
I nl et +Wash
Pause( Dr ai n)
Pause( I nl et )
Wash( I nl et +Wash)
Dr ai n
I nl et
I nl et +Wash
Wash+Heat +Regener at e
Wash+Heat +Br i l l i ant ( 45)
Wash+Heat +Br i l l i ant ( 58)
Pause
Pause
Dr ai n
I nl et
Dr ai n
Pause
Dr ai n
I nl et
Dr ai n
Pause
Dr ai n
St op
I nl et
I nl et +Wash
Dr ai n
St op
TIMER CYCLE CHART
COMPONENT OPERATION AND REPAIR
SAFETY PRECATIONS
Always turn off the electric power supply before servicing any electrical
component, making ohmmeter checks, or replacing any parts.
All voltage checks should be made with a voltmeter having a full scale range of
130 volts or higher.
After service is completed, be sure all safety-grounding circuits are complete, all
electrical connections are secure, and all access panels are in place.
TIMER
With the timer, user selects the various cleaning cycles of the dishwasher. The
timer controls all the electrical functions of the dishwasher in all stages of each
cycle. All functions can be traced on the chart. Diagram provided in this service
manual.
To Test The Timer
If the timer is suspected of faulty operation, reference timer chart and electrical
schematic diagram and proceed as follows:
1. Index the timer to the first increment of the normal cycle, which is a drain
period.
2. If the pump motor fails to operate during the first cycle increment, check for
power at the pump motor connector block, if there is no power check the door
latch switch, if there is power, check the pump motor as described in this
section.
3. If the pump motor does operate, let the timer motor advance the timer through
the drain increment to determine if the timer motor and drive train are fully
operative.
4. Let the timer advance, or index it forward to the portion of the cycle in
question.
5. If a component controlled by the timer fails to function as the timer advances
through the cycle, check for voltage at the timer terminals. If the check voltage
is supplied to the component, check the component as described in this
section.
Continuity through timer contacts, other controls, and wires can also be
checked with an ohmmeter with electrical power disconnected.
If the timers contacts fail to close in the sequence shown on the timer chart
are burned (have resistance measurable with an ohmmeter), or if timer does
not advance automatically, replace the timer.
To Replace Timer
1. Disconnect dishwasher from electrical supply.
2. Remove the timer knob.
Figure 1
Figure 2
3. Remove the screws which locking the control panel (See figure1). Remove the knob and
unscrew the two screws which locking the timer on the control panel. (See Figure 2.)
4. Take down the damaged timer and install a new timer, reverse procedures to complete
repairs. (See figure 3and 4.)
TIMER
Figure 3
Figure 4
DOOR LATCH AND SWITCH ASSEMBLY
The latch and switch are located in the door assembly behind the control panel. The
dishwasher will not operate until the door is closed; the latch engages the door catch.
To Test Or Replace Door Switch.
1. Disconnect dishwasher from electrical supply.
2. Remove screws securing the control panel to the inner door (See Figure 1).
3. Remove wire leads from latch switch.
4. Use ohmmeter and check switch for continuity.
5. If the switch tests is good.
Check dishwasher electrical power.
Check to see if timer is defective.
If switch is defective remove door switch from latch assembly.
6. Install new switch and reverse procedures to complete repairs.
To Replace Door Latch Assembly
1. Disconnect dishwasher from electrical supply.
2. Remove screws securing the control panel to the inner door.
3. Remove wire leads from door latch and remove screws securing door latch assembly to
inner door. (See Figure 5.)
SCREW
FLOAT SWITCH
WIRE
LEAD
SWITCH
DOOR
LATCH
WIRE LEAD
Figure 5
Figure 6
4. Install new door latch assembly and reverse procedures to complete repairs.
FLOAT SWITCH ASSEMBLY
The water float assembly is located in the right lower side of the dishwasher (the
portable located behind the lower front crosspiece). When too much water enter
the dishwasher，the water will enter the float support through the overflow pipe,
the float will make the floating switch acts, the electrical supply to the water valve
will disconnected and the drain pump keep on working.
If the switch fails to operate, check the following:
● Loose connection at the switch terminal.
● Switch not installed properly.
● Warped stem on float, not contacting the actuator blade.
● Float support restricts free float movement.
● Check if the float support is cracked.
● Food or foreign material restricting free float movement.
● If the rubber cap lost(See figure7).
RUBBER CAP
Figure 7
To Remove Or Replace Float Switch
1. Disconnect dishwasher from electrical supply.
2. Remove electrical leads to float switch.
3. Take down the switch from float support.
4. Install new float switch and reverse procedures to complete repairs (See figure 6).
TROUBLESHOOTING
The troubleshooting cheek list is common for all dishwasher models.
They use different parts to accomplish the same thing and diagnosis will
remain similar.
When a problem arises, and a possible cause is listed, follow the test,
remove or replace procedures as outline in this service manual. The
wiring diagram, shematic and timer cycle chat is a necessity when
making electrical checks. In most cases an ohmmeter will handle all the
tests necessary.
For checking any particular cycle of operation, it absolutely necessary
that the cycle be set up as outlined in the product owner’s guide.
SYMPTOM
CHECK THE
FOLLOWING
REMENDY
●fuse (blow nor tripped)
●Supply line receptacle, wiring
harness.
●Timer (contacts open or burnt).
●Motor
(inoperative,
check
resistances).
●Door switch (open contacts)
●Door latch not making contact
with door switch.
Replace fuse or reset breaker.
Repair or replace.
Dishwasher stop washing
but draining
● Overflow occur.
Water can’t pour out from
float support when pull
out the rubber cap.
Dishwasher runs but not
heat
● Hole in the float supply is
jammed.
Check the reason of overflow
pull out the rubber cap wait for
a minute let water pour out.
Suck with dust cleaner or other
let water pour out.
Dishwasher
will
not
operation when turn on
Dishwasher will not stop.
Dishwasher runs with
door open
Motor hums but will not
start or run.
Motor trips out on in
terminal thermal overload
protector.
●heater element (open).
●Timer contacts (open or burnt).
●Wiring or terminal (burnt or
broken).
● Thermostat is closed.
●Timer motor (inoperative).
●Wiring or terminal (burnt or
broken).
●Timer (open or burnt contact).
●Defective door safety switch.
●Start winding(open).
●Motor (bad bearings or locked
rotor).
●Start relay not dropping out.
●Improper voltage.
●Seal faces binding.
●Motor shaft binding.
●Motor windings shorted.
●Glass or foreign items in pump.
Replace timer.
Replace motor.
Replace door switch.
Replace or adjust to make
contact.
Replace heater element.
Replace timer.
Repair or replace.
Replace.
Replace timer.
Repair or replace.
Replace timer.
Replace door safety switch.
Replace motor.
Replace motor.
Replace start relay.
Check voltage.
Repair or replace.
Repair or replace.
Repair motor.
Clean and clear area.
Repeated
cycles
dishwasher
Timer does not advance
automatically.
Dishwasher will not fill
with water.
Incomplete water fill.
Too much water fill.
Dishwasher will not pump
out.
Water siphons out.
Water leaks.
●Timer (contacts open or burnt)
●Motor
(inoperative,
check
resistances).
●Timer motor (stalled or open).
●Check timer for power to timer
motor.
●Timer shaft binding or knob
interference to escutcheon.
●Water supply turns off.
●Defective inlet valve.
●Check
valve
screen
for
obstructions.
●Defective float switch.
●Timer contacts (open or burnt).
●Wiring (broken or burnt).
●Low water pressure.
●Clogged water inlet
valve
screen.
●Timer advanced past start of fill
cycle.
●Heavy water supply usage
elsewhere in home.
●Kinked or restricted fill hose,
water inlet valve to fill tunnel.
●Water inlet fill valve defective.
●Timer contacts (open or burnt).
●Float arm binding or out of
adjustment.
●Possibility customer/user turned
timer past drain cycle.
●Drain pump is restricted.
●Damaged impeller.
●Wiring or terminal (contacts
open or burnt).
●Drain hose loop to low.
●Drain line connected to a floor
drain not vented.
●Spray arm not rotating or split.
●
Poor wash ability.
Overcharge of water.
●Tub seal (torn, worn or loose).
●Dishwasher door not sealing
properly.
●Dishwasher is not level.
●Overburden (wrong type of
detergent).
●Hose clamps loose.
●Heater element mounting nuts
loose.
●Water seal leaking.
●O-ring is not in position.
●Motor and pump assembly not
seated proper in tub liner bottom.
●Spray arm not rotating.
●Improper loading of dishes,
pans and other.
●Detergent dispenser inoperative.
●Insufficient amount of detergent.
Or the detergent is old.
●Damaged or the impeller is
broken.
●Detergent not dissolve.
Replace timer.
Replace timer.
Replace timer.
Replace timer.
Repair or adjust.
Turn water supply on.
Replace inlet valve.
Disassemble and clean screen.
Replace switch.
Replace timer.
Repair or replace.
Minimum water pressure of
15P.S.I
Clean water inlet valve screen.
Instruct customer/user to turn
timer dial to start indicator
mark.
Use dishwasher when water
usage is at a minimum.
Correct as needed.
Replace water inlet fill valve.
Replace timer.
Repair, adjust or replace.
Instruct customer/user.
Clear restrictions.
Replace drain pump.
Replace timer.
Move to proper height.
Install vent air gap at counter
top.
Check for proper rotation or
replace spray arm.
Check and correct for proper
fill.
Replace tub seal.
Adjust door latch assembly
and/or strike.
Level dishwasher properly.
Instructs customer/user.
Tighten all clamps securely.
Tighten the nut.
Use a new water seal.
Adjust the ring or replace a
new.
Replace seal.
Check for proper rotation.
Instructs customer/user on
proper loading
per owner’s
guide.
Repair or replace dispenser.
On proper amount of fresh
deter gent to use.
Replace pump assembly.
Incoming water temperature of
140°F is required to proper
dissolve detergent.
Poor drying of dishes
Detergent cup will not
open.
Door will not lath.
Rinse agent liquid will not
eject.
Rinse agent liquid leaks.
Noisy pump assembly.
Dishwasher continues
fill or continues to
even though in case
there is no voltage to
valve.
Detergent
left
dispenser.
Softener leaking
Leaking form air inlet.
●Improper loading of dishes, pots
and other.
●Heating element (open).
●Incoming water temperature too
low.
●Wiring or terminal (broken or
burnt).
●Cup binding.
●Roll pin retainer or shaft broken.
●Defective bi-metal.
●Timer contact (open or broken).
Door latch damaged.
●Electromagnetic valve defective.
●Rinse agent dispenser not
mounted correctly.
●Plunger stuck or held in closed
position.
●Container cracker or broken.
●Defective seal on plunger.
●Over filling container.
●Impellers not properly shimmed
or rubbing.
to
fill
of
fill
in
●Pump
parts
not
properly
installed.
●Debris in bottom of tub sump
area.
●Defective motor bearings.
●Something (dirt or foreign
material) under diaphragm in
water inlet valve.
●Defective water inlet fill valve.
●Detergent cup held or blocked
by large dishes.
●Dispenser wet when detergent
was added.
●Softener broken.
●Softener nut loosen.
●Air inlet nut loose.
●Air inlet install up side down.
Instruct
customer/user
on
proper loading per owner’ s
guide.
Replace heating element.
Incoming water temperature of
140°F for best drying results.
Replace or repair.
Repair or replace.
Replace pin, retainer or shaft.
Repair or replace.
Replace timer.
Replace door latch.
Replace valve.
Mount securely to rear of inner
door panel.
Free plunger or adjust plunger
release.
Replace container.
Replace plunger.
Follow instructions in owner’s
manual.
Use shim gauge furnished in
impeller and seal kit, when
seals are properly shimmed the
impellers will be in correct
operating position.
Inspect and correct.
Clean out sump area.
Replace motor.
Clean water
replace.
inlet
valve
Replace water inlet valve.
On proper loading dishes.
Instructs customer/user.
Replace softener.
Screw down softener cap.
Screw down air inlet nut.
Reinstall air inlet properly.
or
ext ernal hose
O-ri ng
nut
gui de casi ng
f eedi ng di spenser wat er hose f or
upper sprayer
assembl y
t op sprayi ng
nozzl e
O-ri ng
connect or f or t op
sprayer nozzl e
pi pe f or t op
sprayi ng nozzl e
ri ng nut f or
f ast eni ng l ower
mani f ol d
mot or pump
assembl y
ri ng nut of ai r
breaker
f i l t er assembl y
upper sprayer
l ower sprayer
connect i ng ri ng nut
l ower sprayer shi f t
microf i l er
l ower mani f ol d
support
cup cl ampi ng
ri ng nut
connect i ng duct
f or ext ernal hose
O-ri ng
t hermost at
assembl y
ai r breaker
assembl y
cup gasket
ai r i nl et
cup assembl y
ri ng nut of ai r
breaker
drai n pump
PVC hose f or
pessure swi t ch
O-ri ng
connect i ng duct
i nl et hose of
ai r breaker
pressure swi t ch
drai n hose of
ai r breaker
sal t channel
regenerat i on
hose
sof t ener cap assembl y
heat i ng el ement s
sof t ener ri ng nut
ri ng nut M8
O-ri ng f or gui de rai l
bracket
sof t ener gasket
coupl i ng casi ng
f or prot ect i on
t hermost at
t hermost at
prot ect i on
i nl et val ve
drai n hose
adj ust abl e
sof t ener
i nner door
pi l ot l amp
but t on
power swi t ch
6 1
monopol ar
cont rl swi t ch
bi -pol ar cont rol
swi t ch
handl e assembl y
t i mer
cont rol panel
knob
knob panel
out er door
door spri ng
hi nge assembl y
det ergent
di spenser
door edge guard pol yst yrene
l ef t hi nge
assembl y
ri ght hi nge
assembl y
sound i nsul at i on
f i ber
f l oat suppor t
l evel i ng l eg
t ub band assembl y
l ef t upr i ght s
assembl y
l ower f r ont
cr osspi ece
l owr r ear
cr osspi ece
f oot r est assembl y j unct i on box
door l ock hook and
coupl i ng bl ock
baseboar d
upper f r ont
cr osspi ece
gui de r ai l br acket
assembl y
f l oat suppor t
assembl i ng hook
gui de r ai l
gui de r ai l bl ock
r i ght upr i ght s
assembl y
cut l er y basket
l ower basket
assembl y
uper basket
assembl y
cup r ack of
upper basket