ABSOLUTE HUMIDITY SENSOR (AH SENSOR) COOK-
ING CONDITION
lncase where the AH sensor is used, the foods are cooked in
microwave cooking mode without figuring time, power level
or quantity. When the oven senses enough steam from the
food, it relays the information to its microprocessor which will
calculate the remaining cooking time and power level
needed for best results.
When the food is cooked, water vapor is developed. The
sensor “senses” the vapor and its resistance increases
gradually. When the resistance reaches the value set ac-
cording to the menu, supplementary cooking is started.
The time of supplementary cooking is determined by experi-
ment with each food category and inputted into the LSI.
An example of how sensor works:
1. Potatoes at room temperature. Vapor is emitted very
slowly.
2. Heat potatoes. Moisture and humidity is emitted rapidly.
You can smell the aroma as it cooks. :
3. Sensor detects moisture and humidity and calculates
cooking time and variable power.
AH SENSOR COOKING SEQUENCE
1. In case the AH sensor cooking condition is started. the
coil of shut-off relays (RYl +RYG) are energized, the oven
lamp and cooling fan motor are turned on, but the power
transformer is not turned on.
NOTE:The oven should not be operated on AH SENSOR
COOKING immediately after plugging in the unit. Wait
five minutes before cooking on AH SENSOR COOK-
ING CONDITION.
2. After about 16 seconds, the cook relay (RY2) is ener-
gized. The power transformer is turned on, microwave
energy is produced and first stage is started. The 16 sec-
onds is the cooling time required to remove any vapor
from the oven cavity and sensor.
Figure O-2
NOTE:During this first stage, do not open the door or touch
STOP/CLEAR pad.
3. When the sensor detects the vapor emitted from the food,
the display switches over to the remaining cooking time
and the timer counts down to zero.At this time, the
door may be opened to stir food, turn it or season,
etc.
NOTE: In case where a small quantity of food is cooked,
the oven will stop without displaying the remain-
ing cooking time.
4. When the timer reaches zero, an audible signal
5
sounds. The shut-off relay (RYl+RYG) and cook re-
lay (RY2) are de-energized and the power trans-
former. oven lamp, etc. are turned off.
Opening the door or touching the STOP/CLEAR
pad. the time of day will reappear on the display and
the oven will revert to an OFF condition.
WEIGHT SENSOR COOKING CONDITION
In case where the weight sensor is used, the foods are
cooked without figuring cooking mode, time. power lev-
elor weight.
When the oven senes the weight of food, it relays the
information to its microprosessor which will set the
cooking mode and will calculate the cooking time and
power level needed for best results.
ACTIVATED SENSOR FOR SENSOR COOKING
The weight sensor and AH. sensor should be worked as
following table.
I Sensor ;
IWetaht / AH.~
CookIng j
Menu
’ Roas! beef. 3oast beef drnner
SENSOR Roast lamb. Roast lamb dinner
IRS--ANT
Roast cnwen. Grilled fish
ISensor / Sensor
/ 83 I
’ 3 1
?
-
ACTI3V
!?3ast ChicKen dinner. Reheat pte
’
/
3 I
Fresh vegeaale. racket ootato
j 3
i SE’\iS3;i
Severaae. Souc
7 /
1 q”+LA-
I- L 1 3;nner piate. Casserole
!
I
, ,z
, cannecl fooo
I
’ c
, ?eneat
pi
zza. Seasonea roast
I 2 1
iioasi :urkey. Roast pork
?
I L.-J
Grilled steak’Crlop.s, &wits
/
,--Y /
../
Sriiled Ye3abs. i;osst vegetable ; 2
C:ozerl bfeaetables. Casserole
7
?
j SEP,S32 -
rish flile:s:‘orneo meat
See Pasta. Dessefls
, Soup. Preseives.
t?EEFiOST All merltis
I S=ti$,cR /
The menu “Cake” does not useneither the weight sen-
sor nor the Ah sensor.
SENSING FIRE OPERATION
The oven will stop its operation when there is a fire in
the oven cavity in microwave cooking condition.
LSI measures the voltage across the temperature
measurement circuit intermittently within a 32-second
time base after since the oven is started in microwave
cooking condition. The oven will stop its operation when
the difference of the voltages is more than 0.3 volts in
microwave cooking condition.
1. Within a 32-second base, first the thermistor is ener-
gized for 3 seconds. After 2 seconds since the ther-
b
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