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Service Main Control Board Set-Up
Replacement of main control board on AZ95 Zonelines:
1. Disconnect power and access main control board.
2. Disconnect all connections on the original board.
3. Remove original board and install the new board.
4. Reconnect all connections.
5. Use the chart below to set the “dip-switches” to correspond with the model number. If unsure of
features check nomenclature on the next page.
6. Reassemble and re-apply power.
7. When the unit is powered on after replacing the board, the display will show “P1”.
8. Press the “Aux” button to save and exit, then verify proper operation.
NOTE
: If all the switches are OFF as shown, it would be programmed as an AZ95H15D (230V) without
a make-up air module, heat pipe, or outlet air thermistor.
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Continued next page
)
Switch
S501-1
ON: Air Conditioner
OFF: Heat Pump
Dip Switch
Model
S501-2 S501-3
Not Used
Off
Off
9K BTU
Off
On
12K BTU On
Off
18K BTU On
ON
Switch
S501-4
ON: Make up air module equipped
Switch
S502-1
ON: Heat pipe equipped
Switch
S502-2
ON: All models. Outlet Air
Thermistor equipped.
Switch
S502-3 and S502-4
Not used
