Thermal Compensation - GE Advantium PSA1200R Technical Service Manual

Voltage Compensation
Note: Voltage compensation only occurs when
using a preselected menu item in Speedcook. These
items require compensation for accurate and
consistent cooking results.
Voltage fl uctuations in the power supply can cause
inconsistencies in cooking. The main PCB measures
line voltage at the start of each Speedcooking
selection and adjusts the cooking time to achieve
consistent results. Optimal line voltage, where no
voltage compensation occurs, is 120 VAC. Above
120 VAC, time is subtracted from the recipe. Below
120 VAC, time is added to the recipe. The amount of
voltage compensation required is dependent upon
the incoming voltage at the start of the cooking
cycle and the particular Speedcooking selection
that is chosen.
The following chart shows the predicted
compensation times based on a 5-minute
Speedcook selection (e.g., Biscuits, Refrigerated,
Large).
Voltage Compensation Chart
Voltage Time Change (Seconds)
108
110
112
114
116
118
120
122
124
126
128
130
132
Note: Voltage compensation should be within 20
seconds of values in table.
Voltage compensation occurs after approximately
5 seconds of cooking operation. The display will
show Optimizing time. The time will fl ash and
then display the new adjusted time, based on the
amount of voltage compensation required.

Thermal Compensation

Note: Thermal compensation only occurs once and
only when using a preprogrammed menu item in
Speedcook. These items require compensation for
accurate and consistent cooking results.
When cooking several food items consecutively, the
temperature in the oven may become very high.
When Speedcooking, the Advantium automatically
compensates for the increased temperature by
reducing the power levels based on the following
rules during each 32-second duty cycle.
•
•
•
+180
•
+150
+120
•
+90
•
+60
+30
0
•
-21
-42
•
-63
-84
•
-105
-126
– 68 –
Note
Thermal Compensation occurs only ONCE and
when using a pre-programmed recipe.
Activates when oven cavity temp is greater than
220°F.
Compensation rules:
UPL = Upper Power Level,
LPL = Lower Power Level,
CPL = Convection Power Level.
No compensation if cook time is less than 2
minutes 30 seconds or greater than 13 minutes.
If cavity temp less than 220°F, no compensation.
If cavity temp greater than 220°F but less than
288°F, reduce UPL by 1, LPL by 2, and CPL by 2.
If cavity temp greater than 288°F but less than
340°F, reduce UPL by 1, LPL by 3, and CPL by 2.
If cavity temp greater than 340°F, reduce UPL by
1, LPL by 3, and CPL by 3.
Upper thermal sensor (blue and white wires) is
used for thermal compensation.
Upper Thermal Sensor