York ZF150 Installation Manual

Also see for Predator ZF078: Technical guide

518674-YIM-C-0610Johnson Controls Unitary Products 61Figure 34: Unit Control BoardUnit Control Board Option SetupOption Byte Setup• Enter the Option Setup mode by pushing the OPTIONSETUP / STORE button, and holding it for at least 2seconds.• The green status LED (Option Byte) will be turned on andthe red status LED (Heat Delay) is turned off.• The 8, 4, 2 and 1 LEDs will then show the status of the 4labeled options ((8) Fan Off at Heat Start, (4) LowAmbient Lockout, (2) Free Cooling Lockout, and (1)Lead / Lag).• Press the UP or Down button to change the LED status tocorrespond to the desired Option Setup.• To save the current displayed value, push the OPTIONSETUP / STORE button and hold it for at least 2 seconds.When the value is saved, the green LED will flash a fewtimes and then normal display will resume.NOTE: While in either Setup mode, if no buttons are pushed for60 seconds, the display will revert to its normal display,exiting the Option Setup mode. When saving, thecontrol board only saves the parameters for thecurrently displayed mode (Option Byte or HeatDelay).Heat Delay Setup• Enter the Option Setup mode by pushing the OPTIONSETUP / STORE button, and holding it for at least 2seconds.• The green status LED (Option Byte) will be turned on andthe red status LED (Heat Delay) is turned off.• Press the COMM SETUP / SELECT button to toggle intothe Heat Delay Setup, the green LED will turn off and thered LED for Heat Delay will turn on.• The 8, 4, 2 and 1 LEDs will then show the status of theHeat Delay, (See Table 30). Press the UP or Down buttonto change the LED status to correspond to the desiredHeat Delay Value.• To save the current displayed value, push the OPTIONSETUP / STORE button and hold it for at least 2 seconds.When the value is saved, the red LED will flash a fewtimes and then normal display will resume.NOTE: While in either Setup mode, if no buttons are pushed for60 seconds, the display will revert to its normal display,exiting the Option Setup mode. When saving, thecontrol board only saves the parameters for thecurrently displayed mode (Option Byte or HeatDelay).CheckAlarmHistoryReset AllASCDs forOne CycleNon AlarmCondition GreenLED FlashingCurrent AlarmFlashedRed LED