Magic Chief CDB1500AW, ADB2500AW, MDBH945AW, MDBH955AW, MDBS561AW Technical Information

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Dishwasher — Technical Information

ADB/CDB1500AW*, ADB2500AW*, CDU650AW*, DDB1501AW*, PDBL390AW*, MDBH945AW*, MDBH955AW*, MDBH965AW*, MDBM601AW*, MDBS561AW*, MDBTT50AW*, MDBTT60AW*, MDBTT70AW*, MDB4651AW*, MDB5601AW*, MDB6601AW*, MDB7601AW*

• Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or repair of this unit.

• Refer to Service Manual 16021814 for detailed installation, operating, testing, troubleshooting, and disassembly instructions

CAUTION

All safety information must be followed as provided in Service Manual 16021814.

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Benefits ADB/CDB1500AW

CDU650AW* DDB1501AW* PDBL390AW*

Wash cycles 3 4 5 6 5 Heavy Wash X X X X X Normal Wash X X X X X Quick Wash X X Light Wash X X X Insta Wash X

Rinse Only X X X X

Features Sound package

High Temp

Wash Electronic Controls Sanitizer X X X X Sensor clean X X X X

Water Filtration

Delay Start Energy Star X X X X X

Hard Food Disposer Child lockout X X X X Touch Pad Controls Silverware Location Low rinse aid indicator

Sofsound I™

X X X X X X X X X X

100% Filtered wash

water

2,4 or 6 Hour Delay

Start

X X X X X

5 6 10 12 11

In door

X X

MDBH945AW* MDBTT50AW*

QuietSeries™

Micro-Fine Plus

2,4 or 6 Hour

Delay Start

Compartment

WARNING

200

Filtration

Wash

ADB2500AW* MDBH965AW*

MDBTT70AW* MDB6601AW*

Sofsound II™

100% Filtered

wash water

2,4 or 6 Hour

Delay Start

In door

QuietSeries™

300

Micro-Fine Plus

Filtration

1-9 Hour Delay

Start

Wash

Compartment

MDBM601AW*

MDB5601AW*

QuietSeries™

300

Micro-Fine Plus

Filtration

2,4 or 6 Hour

Delay Start

Wash

Compartment

Component Specifications

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Benefits MDBS561AW* MDBTT60AW* MDB4651AW* MDB7601AW*

Wash cycles 4 5 4 5 Heavy Wash X X X X Normal Wash X X X X Quick Wash Light Wash X X X Insta Wash X

Rinse Only X X X X

Features Sound package QuietSeries™

300

High Temp

Wash Electronic Controls *Sanitizer X X X X Sensor clean X X X X

Water Filtration

Delay Start

Energy Star X X X Hard Food Disposer Child lockout X X X X Touch Pad Controls Silverware Location Low rinse aid indicator

Specifications Value

Power Source

Voltage AC 120 VAC Amperage (Single Unit) 15 A Frequency 60 Hz Motor horsepower

Height−overall Weight

Micro-Fine Plus

X X X X X X X X

Filtration

2,4 or 6 Hour

Delay Start

X X X X

7 10 7 12

Wash

Compartment

Dimensions

33 ½” to 35 ¼”

QuietSeries™

Micro-Fine Plus

Filtration

2,4 or 6 Hour

Delay Start

Compartment

1/3

WARNING

300

Wash

QuietSeries™

200

Micro-Fine

Plus Filtration

2,4 or 6 Hour

Delay Start

Wash

Compartment

QuietSeries™

400

Micro-Fine Plus

Filtration

1-9 Hour Delay

Start

Wash

Compartment

Component Specifications

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Illustration Component Test Procedure Results

Dishwasher Motor CCW rotation only

viewed from shaft end.

1/3HP 120V/60hz, 3.2 amps, 3250 RPM Main Wattage, 285 watts Start Wattage, 1115 watts Control Panel See Component Specifications/

Measure resistance from ST5 (Motor Common – blue) to ST8

(Motor Main - yellow)..........................

See Component Specifications/Motor Connections for details.

Membrane Readings for troubleshooting/pin-out instructions.

3 to 4 Ω

Water valve 120V/60hz, 7 watts

1.13 ± .10 gpm at 20120 psi

Measure resistance from J6 Pin 4 Aqua (Float switch) to ST4

Black (Common) ...............................

1.1 k Ω (This value assumes the float switch is closed).

Vent wax motor 120V with 1/4"

actuation stroke within 90 seconds

Measure resistance from J6 Pin 1 Purple (Vent) to ST4 Black (Common)

............................................................

1.2 k Ω

Dispenser wax motor 120V with 1/4"

actuation stroke within 90 seconds

Measure resistance from J6 Pin 3 Tan (Dispenser) to ST4 Black

(Common) .........................................

2 k Ω

Component Specifications

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Illustration Component Test Procedure Results

Limit Thermostat

Close on Temperature drop @ 149°F

± 7°F (Temp) .......................................

Open on Temperature drop @ 164°F

± 4°F (Temp) .......................................

0 Ω = Closed Infinite Ω = Open

Sensor/Thermistor

10KΩ ± 3% at 77°F and 2.4 k Ω ±

6.5% at 140°F J5 pin 1 - Orange (Temp) to J5 Pin 4 -

Red (Neutral) ......................................

Heater/Heating Element

120v/60hz, 650 watts ± 5% in air, 830 watts ± 5% in 90°F water

Drain Motor 120v/60hz

45 watts

Measure resistance from ST1 Red/Black (Heater) to ST11 White

(Common) ...........................................

Measure resistance from ST6 Gray (Drain) to ST4 Black

(Common) ...........................................

See section “Motor Connections and Diagram” for wiring contacts.

Infinite Ω = Open 0 Ω = Closed

16 Ω (This value assumes the high limit thermostat is closed).

25 Ω

Component Readings/Testing

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

A Manual Function Test may be st arted by pressing t he key 5 times followed by the key within 8 seconds.

The LED will 3 times indicating ma nual test mode is

Normal Wash Flash

active. Specific keypads wil l t ur n on or off a compon ent as follows:

Hi Temp Was h Wash Motor Hi Temp Wa sh

Heated Dry Heating Element Heated Dry

Cycles Select / Normal

First Press Vent Heavy Wash

Second Press Dispenser Normal Wash

Third Press Drain Pump Light Wash / China Crystal

The test wi ll cancel 120 seconds af te r th e l as t keypad is pressed. The display (if available) will show ‘99’ until the remaining timeout period is less than 99 seconds. At this point it will countdown until the modes times out, is can c el l ed, or another key is pressed. To cancel test, press the keypad.

T o check control LED’s and components, enter . If control fails to perform sequen ce as described, and a fault is detecte d, de t ermine failure as described in the . If a load component failure has been diagnosed, proceed to the . To check individual load components for proper op eration, enter . Follow test proce dur e as described. Repair or replace component as needed.

Note High Current Low Current Motor Error

: The or may be detected during a wash cycle selected by a cons um er. If this happe ns, the control will go i n t o a 30 second auto restart mode and shut down if the unit is not able to restart the motor.

Manual Fu nc t i on Test

Start

KEY Function LED

Delay Water Inlet Valve Delay

, Field Service Test

Diagnostic Tips

Field Service Test

Manual Function Test

Heated Dry

Start / Ca ncel

Membrane Readings

(All Mo d els)

Heavy Wash Normal Wash Light Wash / China Crysta l / Gentle Wash Quick Wash Rinse Only Auto Clean / Sen sor Clean Heated Dry Sanitize Hi T e mp Wash

Connector

J1 J1

J1 J1 J1 J1 J1 J1

Measure B et ween

Pin 9 - Pin 5 Pin 9 - Pin 6

Pin 9 - Pin 7

Pin 9 - Pin 8 Pin 10 - Pin 5 Pin 11 - Pin 5 Pin 11 - Pin 6 Pin 11 - Pin 8

(Front Only Controls)

Cycle Select Start / Cancel Delay Tough Scrub Plus / S uper Scrub / Power S cr ub Tough Scrub / Extr a Wash / Hi Temp Insta Wash Model ID Jumper

An unpres sed switch will read as an open circuit. A pressed switch wi ll read as 10k . * On select models



Connector

J1 J1 J1 J1

J1 J1 J1

Measure B et ween

Pin 9 - Pin 5 Pin 10 - Pin 6 Pin 10 - Pin 7 Pin 10 - Pin 8 Pin 11 - Pin 7 Pin 12 - Pin 5 Pin 12 - Pin 7

A Field Service Test may be started by pressing the key 6 times followed by the key within 8 seconds. This test must be performed with clean wate r t o insure proper sen sor performance.

“88” will ap pear in the display (if available*) and the fol l owing sequence of events will occur:

SECONDS

The time for t he Thermistor check / Turbidy Sensor check & calibr at ion may vary slightly .

The Field Service Test will not repeat. The LED wil l during the test mod e. All Indicat or l i g hts (except ) will illuminat e. If the dishwas her door is opened durin g t he test, the test sequence will pause, and resume when the door is closed. To the cancel test, press the keypad.

The contro l has been designed to te st th e Sensor Memory and Motor. During the Field Service T est, if a fault has been detected, the test wil l abort any time after the motor current has been checked and 2 or more LED's will begin to

Flash Memory / Software Check

started . The LED and one of the fol l owing:

* On select models

Start

106

5 120 180

120

. A will occur immediately after the test is

(Delay / Delay 2 hr)

Field Service Test

FUNCTIONS / ACTIVE LOADS Vent Wax Motor / W ater Valve Thermistor check / Turbidity Sensor check & calibration - no loads active. Wash Motor / Vent Wax Motor / Dispenser Wax Motor Wash Motor / Heater / Vent Wax Motor Drain Pump Water Valve

Heavy Wash

Turbidity Sensor Hi Temp Wash Thermistor Heavy Wash

- high current - LED

Motor Normal Wash

- low current - LED

Motor Light Was h Memory Failure Heated Dry

- failure - LED

- LED

Heated Dry

Heav y Was h Flas h

Start / Cancel

Membrane Readings

(Front & Top Controls)

Insta Wash Tough Scrub Plus / Super Scrub / Pow er Scrub 160° W ash T o ugh Scrub / Extra Wash / Hi Temp Model ID Jumper Start / Cancel Delay

Connector

J1 J1 J1 J1 J1 J3 J3

Measure B et ween

Pin 10 - Pin 6 Pin 10 - Pin 7 Pin 10 - Pin 8 Pin 11 - Pin 7 Pin 12 - Pin 8

Pin 9 - Pin 5 Pin 9 - Pin 6

(Top Only Controls)

Insta Wash Tough Scrub Plus / Super Scrub 160° Option T o ugh Scrub / Extra Wash / Hi Temp Model ID Jumper Start Canc el Delay

Connector

J1 J1 J1 J1 J1 J1 J1

Measure B et ween

Pin 10 - Pin 6 Pin 10 - Pin 7 Pin 10 - Pin 8 Pin 11 - Pin 7

Pin 12 - Pin 6 Pin 13 - Pin 12 Pin 13 - Pin 14

Heater¹ Wash Motor Drain Moto r Vent Wax Motor Dispenser Wax Motor Water Valve² Thermistor

Notes:

1. This value assumes the high limit thermostat is closed.

2. This value assumes the float switch is closed.

Load Readings

Measure B et ween

ST1 (Heater) - ST11 (Dlb Neutral)

ST5 (Motor Common) - ST8 (Mot or M ai n)

ST6 (Drain) - ST4 (Dlb Line) J6 Pin 1 (Vent) - ST4 (Dlb Line) J6 Pin 3 (Di s p) - ST4 (Dlb Line)

J6 Pin 4 (Inl t) - ST4 (Dlb Line)

J5 Pin 1 (Temp) - J5 Pin 4 (Neutral)

Result



3 to 4



1.2k



1.1k

See Component Info

Electrical Diagnostics

WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Perform the resistance checks on the component(s) in question at the locations shown on the chart.

*** A resistor in the control board wired in parallel will result in an approximate reading of 4.0 k o hms

with connector J5 plugged in.

dueto theadditional resistance ofthe wire harness. Greater variationcan occur if the component is

still warm from being energized during testing.

* Select Models Only.

** Nominal value for ohms of electrical resistance of component only. These values will vary slightly

(A white plastic latch must be inserted in the latch assembly for this test.)

To check continuity from ends of power leads to control board through door switches

> With one ohm meter lead connected to the white (neutral) power lead, you should have continuity at

stake lugs 10 & 11.

> With one ohm meter lead connected to the black (line) power lead, you should have continuity at

stake lugs 3 & 4, and pin # 8 on connector J5.

Use the "Manual Function Test" as described on the electrical schematic sheet to

check components before

Pin#12345678 Pin#1234 StakeLug11109876 54321

OR RD RD AQ PU BK PU TN AQ

opening the door to perform continuity testing or replacing parts.

J5 J6

connector unplugged)***

2.4K* +/- 6.5% @ 140 10K* +/- 3% @ 77

*Ve nt WM

(1.2K**)

Resistance Check Points and Values

Thermistor (thru harness only with

Disp. WM

(2K**)

Circuit Board

mustbe closed)

WH WH

Water V alve

(float switch

(1.1K**)

before performing any resistance or

lways

YL GY BU BK BK RD

continuity checks.

remove power to the unit

(High limit t'stat must

(14.5- 16.5**)

be closed)

Heater

Wash Motor

(3- 4**)

Drain Motor

(25**)

Control Definition

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Designed to provide a longer cycle for washing items with heavy food soils. Water usage is 8 gallons.

Designed to wash loads containing dishes with normal amounts of food soils. Water usage ranges from 3 to 6 gallons.

Designed for light food soils. The cycle ends with a rinse and does not include drying. Water usage is 4 gallons.

Rinses dishes being held until the dishwasher is full, and another cycle is selected. This cycle helps reduce the potential for developing odors. Water usage is 2 gallons.

Light Wash- Designed to wash loads containing dishes that are lightly soiled Water usage is 5 gallons. Insta Wash- Designed to wash loads containing dishes that are lightly soiled Water usage is 5 gallons. Auto Clean- Designed to auto select the number of fills and length of wash times based on soil level of dish load.

Water usage ranges from 3 to 8 gallons.

Tough Scrub- This option adds fills, heat and/or wash time to the wash cycle.

Designed to auto select the number of fills and length of wash times based on soil level of dish load. Water usage ranges from 3 to 8 gallons.

WARNING

Delays the start of the dishwasher based on user selection.

This option improves drying results by turning the heating element on and off during the dry portion of the cycle.

This option monitors cycles for sanitization.

This option raises Temperature in the

Final rinse to 160

° F

Control Definition

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

Options

Cycles

WARNING

Options

Cycles

Motor Connectivity

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

120V/60hz, 3.2 amps, 3250 RPM

WARNING

Green

Yellow

Blue

(Common)

1/3HP

(Start)

(Ground)

(Main)

Wire harness Connection plug

Cycle Chart

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.

2. Temperature checks force a maximum 20 minute heating delay to reach the desired temperature.

3. The cycle definition gives the minimum and maximum possible cycle lengths. Actual cycle length and executed cycle functions will vary based on the sensor input.

4. Fill length varies between different models.

Auto Clean/Sensor Clean

Sanitize Sanitize Light Wash, ,

160° Option 160° Option

Temperature Options (Available on select models)

adds 5 minutes unheated circulation prior to rinse aid dispense.

Notes

1. All times are approximate.

: If the option is available for a given cycle, it forces a 140°F temp check at the end of the main wash for the a 154°F temp check prior to the rinse aid dispense in the final rinse and

SENSOR CLEAN CYCLE

AUTO CLEAN CYCLE/

(128 Minutes - max)

(94 Minutes - min )

: If the is available for a given cycle, it forces a 160°F temp check prior to the rinse aid dispense in the final rinse.

1:46 max

1:36 min

FILL

WASH

PRE

8:00

DRAIN

2:20

Available Options:

Hi Temp Wash

Tough Scrub/

Tough Scrub Plus Tough Scrub

Extra Wash/Hi Temp

- This option has no effect on this cycle.

/Super Scrub/Power Scrub

- This option adds an additional 5 minutes of heated wash to the wash

1:46 max

- This option is the same as but the main wash temp check is boosted to 145°F.

HEATED

8:00

(133 Minutes - max)

WASH

2:20

Tough Scrub Plus/Super Scrub/Power Scrub Tough Scrub

HEAVY WASH CYCLE

(132 Minutes - min)

1:36 min

FILL

- This option is the same as but the main wash temp check is boosted to 145°F.

HEATED

PRE

DRAIN

SKIP?

1:46 max

1:36 min

FILL

DISP

DET

HEATED

WASH

25:00

CHECK

TEMP

140°F

DRAIN

2:00

1:46 ma x

1:36 min

FILL

HEATED

RINSE

10:00

PRE

1:46 max

1:36 min

FILL

HEATED

WASH

8:00

main and a 10 minute heated pre- rinse.

DISP

DET

HEATED

WASH

22:00

CHECK

TEMP

140°F

DRAIN

2:00

1:46 max

1:36 min

FILL

WARNING

Available Options:

Hi Temp Wash

Tough Scrub/Extra Wash/Hi Temp 5

- This option overrides the sensor’s decision to skip cycle functions / modify temp checks and adds an additional minutes of heated wash to the main wash.

NORMAL WASH CYCLE

(117 Minutes - max)

(97 Minutes - min )

- Overrides the sensor’s decision to modify the temp checks and skip a rinse.

1:46 max

1:36 min

FILL

HEATED

WASH

PRE

8:00

DRAIN

2:20

SKIP?

1:46 max

1:36 min

FILL

DISP

DET

HEATED

WASH

26:00

HEATED

SKIP?

WASH

2:00

SEE NOTE

CHECK

TEMP

TC 1

DRAIN

2:00

1:46 max

1:36 min

FILL

Available Options:

Hi Temp Wash

Tough Scrub/Extra Wash/Hi Temp

Tough Scrub Plus/Super Scrub/Power Scrub Tough Scrub

- This option is the same as but the main wash temp check is boosted to 145°F.

GENTLE WASH/QUICK WASH

CHINA/CRYSTAL CYCLE/

82 Minutes - Max

81 Minutes - Min

- This option boosts the final rinse temp check to 145°F.

- This option adds an 8 minute pre-wash and 5 minutes of heated wash to the main wash.

1:46 max

1:36 min

FILL

DISP

DET

HEATED

WASH

10:00

DRAIN

2:00

1:46 max

1:36 min

FILL

HEATED

RINSE

10:00

DRAIN

2:00

1:46 max

1:36 min

FILL

HEATED

RINSE

15:00

CHECK

TEMP

140°F

Available Options:

Only the option is available with the cycle.

LIGHT WASH CYCLE/

INSTA WASH CYCLE

Heated Dry Insta Wash

51 Minutes - Max

20 Minutes - Min

1:46 max

1:36 min

FILL

DISP

DET

HEATED

WASH

4:00

DRAIN

2:00

1:46 max

1:36 min

FILL

HEATED

RINSE

2:00

DRAIN

2:00

1:46 max

1:36 min

FILL

HEATED

RINSE

3:00

DRAIN

2:00

Available Options:

No options are available with the cycle.

RINSE ONLY CYCLE

9 Minute s

Rinse Only

1:46 max

1:36 min

FILL

RINSE

5:00

DRAIN

2:00

FILL

0:02

HEATER

3:00

DRY CYCLE

HEATER

OFF

1:30

(Front Only Display Models)

DRAIN

2:00

RINSE

10:00

PRE

HEATED

RINSE

SKIP?

10:00

PRE

RINSE

DISP

AID

FILL

0:02

SKIP?

1:46 max

1:36 min

FILL

DRAIN