White Rodgers 1f81-51 User Manual

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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 com-
pressor to allow head pressure to stabilize. If you want
to override this feature while testing thermostat opera-
tion, 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