York YAFS012 Installation Manual

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York YAFS012 Installation Manual Manual pdf 32 page image

32The Aurora ‘Base’ Control System cont.AFFINITY SINGLE & DUAL CAPACITY SERIES INSTALLATION MANUALAurora ‘Base’ ControlNOTE: Refer to the Aurora Base Control Application andTroubleshooting Guide and the Instruction Guide: Aurora Interface andDiagnostics (AID) Tool for additional information.Control FeaturesSoftware ABC Standard Version 2.0Single or Dual Capacity CompressorsEither single or dual capacity compressors can be operated.ECM Blower Motor OptionAn ECM blower motor can be driven directly using the onboardPWM output. Four blower speeds are available based upon theG, Y1, Y2, and W input signals to the board. The blower speedscan be changed either by the ECM manual configurations modemethod or by using the Aurora AID Tool directly. All four blowerspeeds can be set to the same speed if desired.5-Speed ECM Blower Motor OptionA 5-Speed ECM blower motor will be driven directly using thethermostat connections. Any of the G, Y1, or Y2/W signals candrive any of the 5 available pre-programmed blower speeds onthe motor.Other Control Features• Random start at power up• Anti-short cycle protection• High and low pressure cutouts• Loss of charge• Water coil freeze detection• Air coil freeze detection• Over/under voltage protection• Condensate overflow sensor• Load shed• Dehumidification (where applicable)• Emergency shutdown• Hot gas reheat operation (where applicable)• Diagnostic LED• Test mode push button switch• Two auxiliary electric heat outputs• Alarm output• Accessory output with N.O. and N.C.• Modbus communication (master)• Modbus communication (slave)Field Selectable Options via HardwareDIP Switch (SW1) – Test/Configuration Button (See SW1Operation Table)Test ModeThe control is placed in the test mode by holding the push buttonswitch SW1 for 2 - 5 seconds. In test mode most of the controltimings will be shortened by a factor of sixteen (16). LED3 (green)will flash at 1 second on and 1 second off. Additionally, whenentering test mode LED1 (red) will flash the last lockout onetime. Test mode will automatically time out after 30 minutes. Testmode can be exited by pressing and holding the SW1 button for2 to 5 seconds or by cycling the power. NOTE: Test mode willautomatically be exited after 30 minutes.ECM Configuration ModeThe control is placed in the ECM configuration mode by holdingthe pushbutton switch SW1 for 5 to 10 seconds, the high, low,and “G” ECM speeds can be selected by following the LEDdisplay lights. LED2 (yellow) will fast flash when entering theECM configuration. When setting “G” speed LED3 (green) willbe continuously lit, for low speed LED1 (red) will be continuouslylit, and for high speed both LED3 (green) and LED1 (red) will becontinuously lit. During the ECM configuration mode LED2 (yellow)will flash each of the 12 possible blower speeds 3 times. Whenthe desired speed is flashed press SW1, LED2 will fast flash untilSW1 is released. “G” speed has now been selected. Next selectlow speed, and high speed blower selections following the sameprocess above. After third selection has been made, the controlwill exit the ECM configuration mode. Aux fan speed will remain atdefault or current setting and requires the AID Tool for adjustment.Reset Configuration ModeThe control is placed in reset configuration mode by holding thepush button switch SW1 for 50 to 60 seconds. This will resetall configuration settings and the EEPROM back to the factorydefault settings. LED3 (green) will turn off when entering resetconfiguration mode. Once LED3 (green) turns off, release SW1and the control will reset.DIP Switch (SW2)SW2-1 FP1 Selection – Low water coil temperature limit settingfor freeze detection. On = 30°F; Off = 15°F.SW2-2 FP2 Selection – On = 30°F; Off = N/ASW2-3 RV – O/B - thermostat type. Heat pump thermostatswith “O” output in cooling or “B” output in Heating can beselected. On = O; Off = B.SW2-4 Access Relay Operation (P2)and 2-5Access Relay Operation SW2-4 SW2-5Cycle with Blower ON ONCycle with Compressor OFF OFFWater Valve Slow Opening ON OFFCycle with Comm. T-stat Hum Cmd OFF ON