Programming
AC-Q4x Series Installation and Programming Manual 43
5.10 Keypad Heater Operation
This section is not applicable for AC-Q44 (without keypad
heater).
The controllers contain a built-in keypad heater. Once the heater
circuitry is activated, the heater turns on when the ambient
temperature drops to 4±1°C and remains on until the keypad
temperature rises to 7(+2 or -1)°C.
When the heater is on, the controller can operate down to an
ambient temperature of -20°C. When the heater is disabled, the
lowest operating temperature is 0°C.
The default setting for the keypad heater is disabled state (3000).
To define the keypad heater operation:
1. Enter Programming mode.
2. Press 6 to enter Menu 6.
3. The Mode indicator flashes green.
4. Construct a code using the following
instructions:
To disable the heater, the fourth digit is set to 0.
To enable the heater, the fourth digit is set to 1.
5.11 Setting the Lockout Feature
If the controller is presented with wrong codes (PIN or card)
consecutively several times, the unit goes into Lockout mode.
When a lockout occurs, the controller keypad and reader are locked
so no codes can be entered until the set lockout period expires.
During Lockout, the left LED is Off, the right LED flashes red, and the
Green
Green
Green
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