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
1 2 3 4
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
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