Viking DMOR206SS Service Manual page 20

DMOR206SS
When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many
of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter
which will be found in the "Test Procedure" section.
TEST PROCEDURE
CONDITION
Home fuse blows when power cord is plugged into wall receptacle.
Monitor fuse blows when power cord is plugged into wall receptacle.
Display does not illuminate when power cord is first plugged into wall
receptacle.
Display does not operate properly when STOP/CLEAR key is touched. (The time
OFF
of day should appear on the display with beep sound during normal condition.)
CONDITION
Oven lamp does not light with door is opened.
Hood fan motor operates when power cord is first plugged into wall receptacle.
Temperature of oven base seems more than 140
tion of the range below. But hood fan motor does not turn on automatically.
(Normally, food fan motor should be operating at low speed.)
Hood lights do not turn on with pushed Light button.
IDLE
Hood fan motor does not rotate at all with pushed Vent button.
CONDITION
Speed of the hood fan motor does not change when the Vent button is touched
for this function.
Oven lamp does not light in cook cycle. (But it does light when door is opened.)
COOKING
Fan motor does not operate. (Oven lamp and turntable motor operate.)
CONDITION
(COMMON)
Turntable motor does not operate (Oven lamp lights and fan motor operate.)
Cooking cycle runs 1 minute then shuts down.
Oven does not go into cook cycle when START pad is touched
Oven seems to be operating but little or no heat is produced in oven load. (Food
incompletely cooked or not cooked at all at end of cook cycle.)
Oven goes into a cook cycle but extremely uneven heating is produced in
MICROWAVE
COOKING
oven load (food).
CONDITION
Variable cooking does not operate properly except Cooking Power 10 (P-HI)
mode.
Function of TIMED DEFROST does not operate properly.
Stirrer motor does not operate. (Other parts operate.)
CONV indicator lights, but oven does not go into cook cycle when START pad
is touched.
CONVECTION
CONV indicator lights, but heating element does not heat.
COOKING
CONDITION
Temperature in the oven cavity is lower or higher than preset.
Convection motor does not operate.
Convection cycle runs 4 minutes and 15 seconds then shuts down.
The oven stops and "ERROR" is displayed or does not end during Sensor
SENSOR
Cooking condition. (Oven does not shuts off after a cup of water is boiling by
COOKING
Sensor Cooking.)
CONDITION
Oven stops at 32 seconds after starting.
TROUBLESHOOTING GUIDE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
PROBLEM
ο ο
F (60 C) because of opera-
20
CK = Check / RE = Replace
A B C D E F G H I J K L