York SUNLINE MagnaDRY DR180 Installation Manual

Also see for SUNLINE MagnaDRY DR 180: Submittal data sheet Installation manual

Contents

York SUNLINE MagnaDRY DR180 Installation Manual Manual pdf 73 page image

127915-YIM-A-0405Unitary Products Group 73The pilot burner ignites but the ignitor continues tospark and the main burners do not ignite.1. Make the same checks and adjustment asdescribed in “PILOT CHECKOUT” page 65.2. Check the supply pressure as described in “POSTSTART CHECK LIST” page 64. Make adjustmentsas necessary.3. Make sure that the pilot burner is not bent or dam-aged.4. Make sure that the ground connections at the pilotburner, gas valve and ignitor control are intact.Check the high tension wire for good electrical con-nection. If all are intact, replace the ignitor module.The pilot burner lights and the spark stops but the mainburners do not light.1. Check electrical connections between the ignitorcontrol and the gas valve. If intact, check for 24volts across terminals “MV” and “COMMON” termi-nals. If no voltage detected, replace ignitor control.If voltage is present, replace gas valve.Furnace lights with roll-out or one burner has delayedignition.1. Make sure that the carryover is aligned properlywith the flame sensor as described in “PILOTCHECKOUT” page 65.Main burners light but exhibit erratic flame characteris-tics.1. Adjust air shutters as described in “BURNER AIRSHUTTER ADJUSTMENT” page 65.2. Check the main burner orifices for obstruction andalignment. Removal procedure is described inBURNER INSTRUCTIONS page 65. Clean orreplace burner orifices and burners as needed.UNIT FLASH CODESVarious flash codes are utilized by the unit controlboard (UCB) to aid in troubleshooting. Flash codes aredistinguished by the short on and off cycle used(approximately 200ms on and 200ms off). To shownormal operation, the control board flashes a 1 secondon, 1 second off "heartbeat" during normal operation.This is to verify that the UCB is functioning correctly.Do not confuse this with an error flash code. To preventconfusion, 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.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.The control will flash 250ms on and 250ms off for sta-tus codes. The control will separate the flash codeswith a 2 second off delay between flash codes. Undernormal operation, the control will flash the LED at arate of, 1 second on and 1 second off. This will be the“Heart Beat”.TABLE 33: UNIT CONTROL BOARD FLASH CODESFlash 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 out4 Flashes HPS2 - Compressor Lock out5 Flashes LPS1 - Compressor Lock out6 Flashes LPS2 - Compressor Lock out7 Flashes FS1 - Compressor Lock out8 Flashes FS2 - Compressor Lock out9 FlashesIgnition Control Locked Out/Ignition Control Failure / Limit Switch Trip /No Jumper Plug in Heat Section10 Flashes Compressors Locked Out On LowOutdoor Air Temperature111 Flashes Compressors Locked Out Because TheEconomizer Is Using Free Cooling 112 Flashes Fan Overload Switch Trip13 Flashes Compressor Held Off Due To Low Voltage114 Flashes EEPROM Storage Failure (Control Failure)OFF No Power or Control Failure

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