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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. Move SYSTEM switch to OFF position.
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. Move SYSTEM switch to HEAT position
2. Press to adjust thermostat setting to 90° and hold for five
seconds. 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. Move SYSTEM switch to COOL position.
2. Press
to adjust thermostat setting to 45° and hold for five
seconds. 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
During normal operation, this thermostat has a built-in
short term (5-minute) time delay. During this 5-minute
period, the thermostat will lock out the compressor to
allow head pressure to stabilize. If you want to over-
ride this feature while testing thermostat operation,
simply press and buttons at the same time with
the SYSTEM switch in the OFF position.
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 display has CL 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.