11
APPENDIX A — CONTROL SETTINGS
There are 4 DIP switches on the main board. Figures A-D
show the settings for each parameter controlled by a switch.
Switches are shown in the default settings.
v
Terminals J1 and J2 are located on the main control board.
The default setting for J1 is no jumper, Auto Restart. When J1
jumper is in place, the setting is Manual Restart. Terminal J2 is
not used.
The manual button is located on the display board. The de-
fault display is Fahrenheit. To change from Fahrenheit to Cel-
sius, press the button and hold for 5 seconds.
POSITION 1 — START-UP
OFF
— Auto Addressing Mode (Default)
ON
— Factory Test Mode
POSITION 2 — FAN
OFF
— AC Fan (Default)
ON
— Do not set switch to ON
POSITION 3, 4 — Not Used
Fig. A — SW1 Settings
ON
OFF
1 2 3 4
A40-1929
ON
OFF
1 2 3 4
A40-1930
ON
OFF
1 2 3 4
a40-1924
Fig. B — SW2 Settings
ON
OFF
1 2 3 4
a40-1923
POSITION 1, 2 — COIL TEMPERATURE, HEATING MODE
OFF, OFF — Coil Temperature < 59 F, No Heat (Default)
OFF, ON
— Coil Temperature < 68 F, No Heat
ON, OFF
— Coil Temperature < 75.2 F, No Heat
ON, ON
— Coil Temperature < 78.8 F, No Heat
ON
OFF
1 2 3 4
a40-1924
POSITION 3, 4 — MODE, FAN STATUS, SP REACHED
SP — Set Point
OFF, OFF — Cooling Mode/Fan On/SP Reached,
Heating Mode/Fan On/SP Reached (Default)
OFF, ON
— Cooling Mode/Fan On/SP Reached,
Heating Mode/Fan Off/SP Reached
ON, OFF
— Cooling Mode/Fan Off/SP Reached,
Heating Mode/Fan On/SP Reached
ON, ON
— Cooling Mode/Fan Off/SP Reached,
Heating Mode/Fan Off/SP Reached
Fig. C — SW5 Settings
ON
OFF
1 2
a40-1925
POSITION 1, 2 — HEATING TEMPERATURE OFFSET
OFF, OFF — Temperature Offset is 1.8 F (Default)
OFF, ON
— Temperature Offset is 3.6 F
ON, OFF
— Temperature Offset is 7.2.F
ON, ON
— Temperature Offset is 10.8 F
Fig. D — SW6 Settings
POSITION 1 — CONTROLS
OFF
— Display Board (Default)
ON
— Control Interface Module
ON
OFF
1 2 3
a40-1926
ON
OFF
1 2 3
a40-1927
POSITION 2, 3 — Not Used