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[5] E: SWITCH (SW1, SW2, SW3) TEST
CARRY OUT 3D CHECKS.
Isolate the switch to be tested and using an ohmmeter check between the terminals as described in the following table.
Table: Terminal Connection of Switch
Plunger Operation
Released
Depressed
If incorrect readings are obtained, make the necessary switch adjustment or replace the switch.
CARRY OUT 4R CHECKS.
[6] F: TEMPERATURE FUSE (TF) TEST
CARRY OUT 3D CHECKS.
Disconnect the leads from the terminals of the temperature fuse. Then using an ohmmeter, make a continuity test across the two terminals as
described in the below.
Parts Name
Temperature fuse 150°C
If incorrect readings are obtained, replace the temperature fuse.
An open circuit temperature fuse (OVEN) indicates that the food in the oven cavity may catch fire, this may be due to overheating produced by
improper setting of the cooking time or failure of the control panel.
CARRY OUT 4R CHECKS.
[7] G: MOTOR WINDING TEST
CARRY OUT 3D CHECKS.
Disconnect the leads from the motor. Using an ohmmeter, check the resistance between the two terminals as described in the table below.
Fan Motors
Part Code
RMOTEA405WRZZ
Resistance
Approximately 388Ω
If incorrect readings are obtained, replace the motor.
CARRY OUT 4R CHECKS.
[8] H: FUSE (F1) T6.3A
CARRY OUT 3D CHECKS.
If the fuse F1 T6.3A is blown when the door is opened, check the secondary interlock switch SW1, primary interlock relay RY2 and monitor switch
SW2.
If the fuse F1 T6.3A is blown by incorrect door switching replace the defective switch(es) and the fuse F1 T6.3A.
If the fuse F1 T6.3A is blown, there is a shorts or grounds in electrical parts or wire harness. Check them and replace the defective parts or repair the
wire harness.
CARRY OUT 4R CHECKS.
CAUTION: ONLY REPLACE FUSE F1 T6.3A WITH THE CORRECT VALUE REPLACEMENT.
[9] I: NOISE FILTER TEST
CARRY OUT 3D CHECKS.
Disconnect the leads from the terminals of the noise filter. Using an ohmmeter, check between the
terminals as described in the following table.
MEASURING POINT
Between N and L
Between terminal N and WHITE
Between terminal L and RED
If incorrect readings are obtained, replace the noise filter unit.
CARRY OUT 4R CHECKS.
COM to NO
COM to NC
Open circuit
Short circuit
Short circuit
Open circuit.
Table: Temperature Fuse Test
Temperature of "ON" condition
(closed circuit).
This is not resetable type.
Table: Resistance of Motor
RMOTDA289WRZZ
RMOTDA173WRE0
Approximately 13.5kΩ
Approximately 12.2kΩ
INDICATION OF OHMMETER
Open circuit
Short circuit
Short circuit
COM; Common terminal
NO;
Normally open terminal
NC;
Normally close terminal
Temperature of "OFF" condition
(open circuit).
Above 150°C
Turntable motor
RMOTDA253WRZZ
Approximately 14.5kΩ
8 – 3
Indication of ohmmeter (When room
temperature is approx. 20°C.)
Closed circuit
NOISE FILTER
N
NOISE SUPPRESSION COIL
WHT
R26STA
L
F1:
FUSE
T6.3A
RED
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