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■ The Energy Efficient Recovery (EER™) looks ahead up to 2 hours prior to the end
of the set-back (or set-up) period to begin monitoring system performance and
calculating when to turn your system on. It will also determine whether the
auxiliary heat or cool stages should be activated prior to setpoint time to meet
your chosen setpoint temperature. The thermostat will indicate “EER”in the
display when this program feature is active.
The EER™ feature will lock out the auxiliary stages until 30 minutes prior to the
upcoming setpoint time to utilize the most energy efficient first stage. The
auxiliary stages of heating and cooling will be available during this lock-out
period to maintain the setpoint temperature should the system not be able to
keep up with the heating or cooling demand.
■ To control the system, press the SYSTEM switch until HEAT, COOL, or AUTO
appears in the display. The thermostat will not properly control the system to
your desired setpoint temperature unless it is in one of these operating modes.
■ To enter AUTO, you must first be in PROGRAM mode. Press PROG/MAN button
until PROGRAM appears in display. Then press SYSTEM button to enter AUTO.
■ The QuickSet™ feature programs each individual day simultaneously with the
identical program. Each and every day can then be individually modified to suit
specific needs/desires.
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SYSTEM
QUICKSET
PROG/MAN
SYSTEM
HELPFUL PROGRAMMING TIPS (Cont.)
TROUBLESHOOTING
Symptom Remedy
Thermostat does not turn on system. Check wiring. (See “Installation Instructions” included with thermostat.)
Check to see if "OFF" is indicated in display. Select HEAT or COOL mode
by pressing SYSTEM button.
Compressor short cycle protection may be in effect.
Press INSTALL/BYPASS behind front door to override.
(See “COMPRESSOR PROTECTION.”)
Second stage of heat or cool turns Increase second stage temperature differential setting.
on too quickly. (See “PROGRAMMING.”)
System turns on as much as two Energy Efficient Recovery (EER™) mode is active. Thermostat is
hours before setpoint time. operating normally. (See “PROGRAMMING-Energy Efficient Recovery.”)
Display is indicating “-AC” in This indicates the thermostat has detected that the 24V AC circuit to
time field. which it is attached is not functioning. Check wiring, fuses, and power
source to determine the cause of the problem. The back-up batteries in
this thermostat will maintain the programming until system power can be
restored. (See “24V AC CIRCUIT POWER MONITOR.”)
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