York ZR Series Installation Manual

Also see for ZR SERIES: Technical guide Wiring diagrams Installation manual

Contents

275864-YIM-F-021360 Johnson Controls Unitary ProductsFigure 34: Unit Control BoardTable 26: Unit Control Board Flash CodesFLASH CODE DESCRIPTIONGREENLED16REDLED8REDLED4REDLED2REDLED1On Steady This is a Control Failure - - - - -1 Flash Not Applicable - - - - -2 Flashes Control waiting ASCD 11. Non-alarm condition.Flashing Off Off On Off3 Flashes HPS1 Compressor Lockout Off Off Off On On4 Flashes HPS2 Compressor Lockout Off Off On Off Off5 Flashes LPS1 Compressor Lockout Off Off On Off On6 Flashes LPS2 Compressor Lockout Off Off On On Off7 Flashes FS1 Compressor Lockout Off Off On On On8 Flashes FS2 Compressor Lockout Off On Off Off Off9 Flashes Ignition Control Locked Out / Ignition Control Failure Off On Off Off On10 Flashes Compressors Locked Out on Low Outdoor Air Temperature1 Flashing On Off On Off11 Flashes Compressors locked out because the Economizer is using freeCooling1 Flashing On Off On On12 Flashes Unit Locked Out due to Fan Overload Switch Failure Off On On Off Off13 Flashes Compressor Held Off due to Low Voltage1 Flashing On On Off On14 Flashes EEPROM Storage Failure Off On On On OffOFF No Power or Control Failure Off Off Off Off OffCheckAlarmHistoryReset All ASCDsFor One CycleNon Alarm ConditionGreen LED FlashingCurrent AlarmFlashed Red LED

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