Baffle Operation - KitchenAid KSRA22FK Technical Education

Baffle Operation

The baffle assembly consists of a 120vac motor, a baffle door and a feedback switch. The switch
provides a sensing circuit to the control to let it know the position of the baffle door. When the refrigerator thermistor
senses a temperature above the customer setting, the motor runs to open the baffle door.
Refrigerator thermistor calling for cooling - Baffle opening
L1
When the baffle door is fully open, the switch closes sending 120vac out pin 4 (Y/R wire) on the baffle door
assembly to pin P1-1 on the control. When the control senses 120vac at P1-1, the motor stops with the door fully
open.
Refrigerator thermistor calling for cooling - Baffle open
L1
4
AIR BAFFLE ASSEMBLY
4
Y/R
5
BK
EVAP. FAN MOTOR
BK
BAFFLE MOTOR AND EVAPORATOR FAN RUNNING
BAFFLE OPENING
AIR BAFFLE ASSEMBLY
4
Y/R
5
BK
EVAP. FAN MOTOR
BK
BAFFLE MOTOR OFF, DOOR FULLY OPEN
EVAPORATOR FAN MOTOR RUNNING
ELECTRONIC CONTROL
P1-1
6
OR/BK
P2-1
WH/BK
P2-3
P4-3
ELECTRONIC CONTROL
P1-1
6
OR/BK
P2-1
WH/BK
P2-3
P4-3
BAFFLE
TRIAC
WH
P1-3
EVAP. MOTOR
TRIAC
P4-4
WH
P1-3
EVAP. MOTOR
TRIAC
P4-4
N
N