Option 20 — Outdoor Air Temperature Offset Adjustment
This selection allows the calibration, or deliberate miscalibration of the outdoor air temperature sensor reading. The selection ranges from
Default is 0.
Option 21 — Keypad Lockout (programmable models only)
This selection allows the installer to limit access to the keypad. Selections are OF (off), 1, 2, 3. These options are independent of Option 24, which allows the programmable model to be configured as a
OF (off) — The user has full access to the keypad.
1 — The user has access to change the setpoints, time of day and calendar.
2 — The user has access to change the setpoints only.
3 — The entire keypad is locked. When a button is pressed, the backlight will turn on but none of the operating parameters will be changed.
When the keypad lock selection is turned on, the padlock icon will be displayed. To unlock the keypad, press and hold the UP/DOWN buttons simultaneously for five seconds. When the keypad is unlocked, the padlock icon will turn off. The keypad will remain unlocked for two minutes after the last button press. After two minutes with no button presses, the keypad will lock again. The keypad will not lock in the software configuration mode or in the installer test mode.
Default is OF (off).
Option 21 — Keypad Lockout (non-programmable models only)
This selection allows the installer to limit access to the keypad. Selections are OF (off), 1, 2.
OF (off) — The user has full access to the keypad.
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