“HI” or “LO” is shown in
the display.
The temperature the unit is measuring is higher or lower
than the display limit of 40-99 deg. F (5.0°C – 37.0°C). If
the thermostat was subjected to a temperature out of this
range just prior to installation, wait until it adjusts to the
room temperature. If the room temperature is too high
or too
low, turn on the cooling or heating system.
Heating or cooling system
runs too often or not often
enough to keep room
temperature close to set
point temperature.
Change differential settings—1
st
and/or 2nd stage (see
Settings section).
Display is blank. System reset required (see Additional Operating
Features section).
Set point below 45 deg. F
(7 deg. C) or above 90 deg.
F (32 deg. C) cannot be
entered.
The temperature setting range of the thermostat is between
45 and 90 deg. F (7 and 32 deg. C).
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