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CHECK THERMOSTAT OPERATION
If at any time during testing, your system does not operate
properly, contact a qualified serviceperson.
Fan Operation
1. Turn on power to the system.
2. Press SYSTEM button until the system is OFF.
3. Move FAN switch to ON. The blower should begin to operate.
4. Move FAN switch to AUTO position. The blower should stop
within a short period of time.
Heating System
1. Press SYSTEM button to turn thermostat to HEAT.
2. Press to adjust thermostat setting to 90° and hold for five
seconds. After you release the button, both stages of the
heating system should begin to operate within five seconds.
3. Press to adjust temperature setting below room tempera-
ture. The auxiliary heating system will stop immediately and
the first stage will stop within three to four minutes.
Cooling System
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate
the cooling system.
1. Press SYSTEM button to turn thermostat to COOL.
2. Press
to adjust thermostat setting to 45° and hold for five
seconds. After you release the button, the blower should
come on immediately on high speed, followed by cold air
circulation. Both stages of the cooling system should begin
to operate (if you have a two-stage cooling system).
NOTE
CAUTION
!
LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’ USE
ONLY. OPERATORS SHOULD NOT USE THIS FEA-
TURE DUE TO POSSIBILITY OF EQUIPMENT OR
PROPERTY DAMAGE, OR PERSONAL INJURY.
COMPRESSOR SHORT TERM
CYCLE PROTECTION
This thermostat has a built-in short term (5-minute)
time delay. During this 5-minute period, the thermo-
stat will lock out the compressor to allow head pres-
sure to stabilize. If you want to override this feature
while testing thermostat operation, simply press
and buttons at the same time.
DO NOT USE THE LOCKOUT BYPASS OPTION
UNLESS THE COMPRESSOR OIL HEATERS HAVE
BEEN OPERATIONAL FOR 6 HOURS AND THE
SYSTEM HAS NOT BEEN OPERATIONAL FOR AT
LEAST 5 MINUTES.
If the fan is running but the compressor is not running and the
word COOL is flashing, the compressor lockout feature is
operating (see Lockout Bypass Option to temporarily
override the compressor lockout feature during testing).
3. Press to adjust temperature setting above room tempera-
ture. The cooling system should stop operating.
During normal operation, the second stage of heat or cool may
take 15 to 30 minutes to turn on. The delay varies depending on
the performance of the first stage. Typically the second stage will
come on sooner in more severe weather, while in milder weather
it will take longer. There is no adjustment to this feature, as it is
designed to maximize both comfort and efficiency.
NOTE