The Technician Menu contains the less commonly accessed unit features. These features should not be accessed except by HVAC technicians. PID loops, timers, and other features critical to the function of the unit are adjusted here. The password to access the technician menu is 0002.
The Technician Menu is divided into 6 submenus:
Operation: The operation menu contains features and options that significantly impact the unit's operation. These features are typically set during start-up by a HVAC technician, if adjustment is required. See below for more information.
Communication: The communication menu contains setup options for the controller's communication. See below for further description.
Status: The status menu accesses submenus to view system inputs and outputs. See below for further description.
Manual Control: Manual control allows the user to put devices into an in-hand status and operate them manually for start-up or testing procedures. Analog device outputs may also be set as a percentage of the possible 0-10 VDC signal.
Change Passwords: Passwords for the Main, System, and Technician Menus may be viewed and changed here. Note that AboveAir Technologies does not retain a record of these values, so forgotten values must be recovered via the factory menu.
Save/Restore: The save/restore menu contains options to create a customer save of values set in the field and restore the unit to either its factory or customer saved defaults. Please note that restoring previous values will overwrite all current values and anything that has not been saved previously will be lost.
Fan Control: Options for fan control, including analog control set points (static pressure, CO2, etc.), supply air damper delays, freeze protection, air proving, and alarm shutdown options.
Economizer: Options for either the air-side economizer or freecooling/waterside economizer are accessed in this menu, if applicable.
Sensor Setup: Sensor setup options are contained in this menu. This includes options for the sensor range, signal type, and to apply offsets to the sensor readings (either for calibration purposes or to run the unit during start-up).
Alarm Setup: Alarm options are set here. The condensate overflow alarm can be set to either shutdown the unit or only condensate generating features. The remote stop/start input can be configured as either a life safety input (immediate unit shutdown) or a standard stop/start. The life safety alarm may be set to allow auto-restart after the signal is restored. Additionally, the critical alarms that cause the alarm relay to close are set here.
Temp Control: Standard units may be set for single set point or separate heating/cooling set point operation here. Temperature reset schedules, if applicable, are also set here.
PID Settings: The PID loop settings that control component activation and output. Most devices are factory set for proportional only control. Do not attempt to adjust these settings if you are unfamiliar with PID control.
Valve Options: Valve operation options are set here. Digital and analog valve can be set as either NC or NO type. Purge frequency and cycle time may also be set (no purge is set by default).
BMS Setup: The BMS Setup menu contains setup for communication with the optional serial card. The communication type, baud rate, and unit ID should be set to match the system requirement. Additional steps required for setting up the BMS communication feature are found on the BMS connections page.
Communication: If the unit was purchased with the pLAN multi-unit sequencing option, then options for setting up rotation frequency, number of lead and lag units, and assist are set here. Communication status between the units may also be viewed here.
Digital Inputs: The current state of the digital inputs to the controller is displayed here. Additionally, digital inputs may be changed from the factory NC type to NO type if required in the field.
Digital Outputs: The current state of the digital outputs from the controller is displayed here.
Analog Outputs: The current output from the controller as a percentage of the possible 0-10 VDC signal is shown here. Please note that some devices such as digital scroll compressors do not utilize this full output range.