York SUNLINE DCG Series Installation Manual

Contents

York SUNLINE DCG Series Installation Manual Manual pdf 55 page image

290699-YIM-B-0607Unitary Products Group 55UCB and the ICB are functioning correctly. Do not con-fuse this with an error flash code. To prevent confu-sion, a 1-flash, flash code is not used.Current alarms or active restrictions are flashed on theUCB LED. Pressing and releasing the ALARMS buttonon the UCB can check the alarm history. The UCB willcycle through the last five (5) alarms, most recent tooldest, separating each alarm flash code by approxi-mately 2 seconds.Current alarms or active restrictions are flashed on theICB LED. No history is stored on the ICB.In some cases, it may be necessary to “zero” theASCD for the compressors in order to perform trouble-shooting. To reset all ASCDs for one cycle, press andrelease the UCB TEST button once.TABLE 32: UNIT CONTROL BOARD FLASHCODESFlash Code DescriptionOn Steady Control Failure - Replace ControlHeart Beat Normal Operation1 Flash Not Applicable2 Flashes Control waiting ASCD 11. These flash codes do not represent alarms.3 Flashes HPS1 - Compressor Lock out5 Flashes LPS1 - Compressor Lock out7 Flashes FS1 - Compressor Lock out9 FlashesIgnition Control Locked Out/Ignition Control Failure / Limit Switch Trip / NoJumper Plug in Heat Section10 Flashes Compressors Locked Out On LowOutdoor Air Temperature111 Flashes Compressors Locked Out Because TheEconomizer Is Using Free Cooling113 Flashes Compressor Held Off Due To Low Voltage114 Flashes EEPROM Storage Failure (Control Failure)OFF No Power or Control FailureTABLE 33: IGNITION CONTROL BOARD FLASHCODESFlash Code DescriptionHeart Beat Normal Operation1 Flash Not Applicable2 Flashes Pressure / Centrifugal Switch Open with Inducer On3 Flashes Pressure / Centrifugal Switch Closed with Inducer Off4 Flashes Not Applicable5 Flashes Lock Out From Too Many Flame Losses6 Flashes High Temperature Switch Open (Primary or Aux.)7 Flashes Rollout Switch Open8 Flashes Flame Present With Gas OFF9 Flashes Gas Valve Stuck Off or On10 Flashes Flame Sense Circuit Failure

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