5. Press SET button. The first stage temperature differential (1˚F) will
appear on the display as 10˚.
6. Press either
∨
or
∧
button to change the first stage temperature
differential. The differential may be adjusted from .5˚F (05˚), 1˚F (10˚),
1.5˚F (15˚), or 2˚F (20˚). (If your system cycles too often, increase the
temperature differential setting.)
7. P ress SET button. The second stage temperature differential (1.5˚F)
will appear on the display as 15˚.
8. Press either
∨
or
∧
button to change the temperature differential.
The differential may be adjusted from 1.5˚F (15˚), 2˚F (20˚), or 3˚F
(30˚).
9. Press SET button.
NOTE: If SYSTEM button is in COOL, the display will show “:60.” This is
the residual cooling fan delay. If desired press either
∨
or
∧
button to
adjust the fan delay to “:00”, “:30”, “:60”, or “:90” seconds, then press
set.
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24V AC Circuit Power Monitor
If you experience a loss of power, this thermostat will indicate “-AC” in the time field of the LCD
display. This means your system’s 24V AC circuit is not receiving power or is not functioning
correctly. The back-up batteries provided in this thermostat will maintain the programming
during the loss of power, however, the thermostat requires 24V AC power and a functioning
system for proper control.
LED Indicator
There is one LED indicator located on the front of your Robert Shaw thermostat. This turns on
when the auxiliary (also called back-up) heating is in operation. This is the second (non-economy)
stage of heat.
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OPERATION
