Whirlpool 721.663398 manual Relay, Power, Level, FAN Motor, Turntable, Sensor

Models: 721.663398

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COMPONENTS

TEST PROCEDURE

 

RESULTS

 

RELAY 2

Check for continuity of relay 2 with an ohm-

POWER

 

 

 

meter.

 

 

 

LEVEL

 

 

 

(Remove wire leads from relay 2 and operate

 

 

 

 

 

 

 

the unit.)

1

4 sec

18 sec

 

 

 

 

2

6 sec

16 sec

 

 

3

8 sec

14 sec

 

 

4

10 sec

12 sec

 

 

5

12 sec

10 sec

 

 

6

14 sec

8 sec

 

 

7

16 sec

6 sec

 

Relay 2

8

18 sec

4 sec

 

9

20 sec

2 sec

 

 

10

22 sec

0 sec

FAN MOTOR

Measure the resistance.

Normal:

 

 

(Wire leads removed)

(Ohm-meter scale: R x 1)

A: Approx. 85 ~ 100 ohm.

 

 

 

B: Approx. 10 ~ 25 ohm.

 

 

B

Abnormal: Infinite or several

 

 

 

 

 

A

 

ohm.

 

 

 

 

 

TURNTABLE

Measure the resistance.

Normal: Approx.100~150 ohm

MOTOR

(Ohm-meter scale: R x 1)

(Wire leads removed)

 

Abnormal: Infinite or several

 

 

 

 

ohm.

 

SENSOR

1) Disconnect sensor connector from micom

Normal: Approximately

 

computer board.

 

 

2) Measure resistance terminal to terminal

BK - RD: 5.2 Kohm

 

RD - WH: 2.1 Kohm

 

(ohm meter scale: R X 1000)

 

BK - WH: 2.1 Kohm

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal: Infinite or several.

 

 

 

 

 

 

* Sensor cooking condition

 

 

 

 

 

 

1. Oven should be plugged in at least

 

 

 

 

 

 

5 minutes before sensor cooking.

 

 

 

 

 

 

2. Room temperature should not

 

 

 

 

 

 

exceed 95°F .

 

 

 

 

 

BK

3. Be sure the exterior of the cooking

 

1

 

 

 

container and the interior of the oven

 

 

 

 

RD

 

2

 

 

 

are dry. Wipe each off with paper

 

 

 

 

WH

 

3

 

 

 

towel.

 

 

 

 

 

 

 

 

 

 

 

4. The oven will not generate

 

 

 

 

 

 

microwave energy for the first 28

 

 

 

 

 

 

seconds of the sensor cooking cycle.

NOTE : • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED

 

WHEN THE UNIT IS

SERVICED FOR ANY REASON.

 

MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.

WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.

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Whirlpool 721.663398 manual Relay, Power, Level, FAN Motor, Turntable, Sensor

721.663398 specifications

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