Dampers - GE ZIS360NM Technical Service Manual

3. This step for fan removal only: Remove
screen from front of fan and fan from housing.
4. Remove 2 screws and the sheet metal cover
from the right-hand side of the housing.
5. Disconnect fan connector.
6. This step for fan removal only: Cut fan wires
at fan to remove.
Note: When installing new fan, fan wires do not
have to be installed under plastic wire holders.
7. Disconnect heater connector and 9-pin connector.
8. Remove 5 screws and fan housing from fresh food compartment.
Note: When installing the diffuser onto the fan housing, the tabs must be on the bottom and the flat
surface must be on top. Incorrect installation will prevent the drawer from cooling and warming properly.

Dampers

Caution: Do not manually move damper door. Manually moving damper door will damage damper.
The dampers are located between the fan housing and the center mullion. The fan housing must be
removed from the fresh food compartment to replace the dampers.
Both dampers always operate at the same time. The
upper damper can be viewed from the Climate
Control Drawer compartment. The lower damper can
be viewed from the freezer compartment. Dampers
will be closed during Express Thaw and will be open
during Express Chill.
The main control board opens and closes the damper
based on input from the Climate Control Drawer
control board and the thermistor.
After selecting Express Thaw, 12 VDC are output
from the main control board for approximately 4
seconds to close the damper. This voltage can be
measured at the following points:
• Main control board J5-2 to J5-1 with positive (red)
test meter lead on J5-2.
•
9-pin connector behind Climate Control Drawer.
Check from gray wire to yellow wire with positive
(red) test meter lead on gray wire.
After selecting Express Chill, 12 VDC are output
from the main control board for approximately 4
seconds to open the damper. This voltage can be
measured at the following points:
• Main control board J5-1 to J5-2 with positive (red)
test meter lead on J5-1.
•
9-pin connector behind Climate Control Drawer.
Check from yellow wire to gray wire with positive
(red) test meter lead on yellow wire.
Screen and Fan
Fan Housing
Dampers
– 39 –
9-Pin
Connector
Fan Connector
Heater Connector
Fan Housing
9-Pin Connector