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stored to the system, heaters in the system
will begin to heat the crankcase oils. The
thermostat's time delay will lock out the
compressor to prevent its operation until the
compressor oil is sufficiently warmed. Dur-
ing the lockout time period, the auxiliary
heating system will operate to maintain a
setpoint temperature.
For example, if a power outage of three
hours occurs, the compressor will be locked
out for two hours.
• TOTAL KEYPAD LOCKOUT — When op-
tion switch #3 is in the total keypad lockout
position (ON), programs cannot be altered
and all buttons are disabled.
NOTE
Programming should be completed and bat-
tery should be installed before changing op-
tion switch #3.
ON
Switch #1 set at installation (DO NOT CHANGE)
Switch #2 set at installation (DO NOT CHANGE)
Switch #3 ON
Switch #4 (see AUTOMATIC CHANGEOVER)
Switches #1 and #2 are set at installation
and should not be changed. To enable total
keypad lockout, move option switch #3 to
ON (see figure above). DO NOT MOVE
OPTION SWITCHES #1 OR #2, as this may
affect thermostat operation [option switch
1
2
3
4
17
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