Changing Dip Switch Settings - Robertshaw 9720 User Manual

CHANGING DIP SWITCH SETTINGS

Thermostat functions are determined by settings on two sets of dip switches: "SWITCH 1" and "SWITCH 2". These
dip switches are pre-set at installation. However, some users may want to change some of the dip switch settings
on SWITCH 2 to enable or change certain thermostat options.
Figure 3 shows the location of the dip switches. Figure 4 shows a close-up of the dip switches. Dip switches marked
with an asterisk (*) should not be changed by the user. These are pre-set at time of installation by the installer and
must only be changed by a certified contractor familiar with heating and air conditioning systems. Change only the
dip switches necessary for options programming.
DIP SWITCHES
SWITCH 1
-
SWITCH 2
-
Figure 3
31
MAIN
*
+ - +
REM 1
+ - +
*
REM 2
*
REM 3
*
RESET
SWITCH 1
ON OFF
ON OFF
ON OFF
ON OFF
Default Settings
Figure 4
SWITCH 2
LOCK ON
AUTO CHG OFF
DEAD BAND 5˚
NOT USED
Default Settings
OPERATION
OFF
ON
3˚