Source 1 Product Catalog 2017 Page 452 Index & Information

452 FLASH CODE DESCRIPTION ON STEADY CONTROL FAILURE - REPLACE BOARD HEART BEAT NORMAL OPERATION 1 FLASH N/A 2 FLASHES CONTROL W AITING - ASCD* 3 FLASHES HPS1 - COMPRESSOR LOCKOUT 4 FLASHES HPS2 - COMPRESSOR LOCKOUT 5 FLASHES LPS1 - COMPRESSOR LOCKOUT 6 FLASHES LPS2 - COMPRESSOR LOCKOUT 7 FLASHES FS1 - COMPRESSOR LOCKOUT 8 FLASHES FS2 - COMPRESSOR LOCKOUT 9 FLASHES IGNITION CONTROL LOCKED OUT; IGNITION CONTROL FAILURE; LIMIT SW ITCH TRIP; NO JUMPER PLUG IN HEAT SECTION 10 FLASHES COMPRESSORS LOCKED OUT ON LOW OUTDOOR AIR TEMPERATURE 11 FLASHES COMPRESSORS LOCKED OUT; ECONOMIZER USING FREE COOLING 12 FLASHES FAN OVERLOAD SW ITCH TRIP 13 FLASHES COMPRESSOR HELD OFF; LOW VOLTAGE 14 FLASHES EEPROM STORAGE FAILURE; (CONTROL FAILURE) OFF NO POW ER; CONTROL FAILURE York Commercial Equipment Simplicity Control Flash Boards SYSTEM PROBLEM DISCHARGE PRESSURE SUCTION PRESSURE SUPERHEAT SUBCOOLING AMPS OVERCHARGE % % % % % UNDERCHARGE % % % % % LIQUID RESTRICTION (DRIER) % % % % % LOW EVAPORATOR AIRFLOW % % % % % DIRTY CONDENSER % % % % % LOW OUTSIDE AMBIENT TEMPERATURE % % % % % INEFFICIENT COMPRESSOR % % % % % TXV FEELER BULB CHARGE LOST % % % % % TXV FEELER BULB LOOSE MOUNTED % % % % % POORLY INSULATED FEELER BULB % % % % % Air Conditioning Troubleshooting Guide Basic System Analysis General Piping Recommendations 1) Never add oil to the system. 2) Maximum total line length for the following units: Heat Pumps 1 to 5 tons 75 feet Cooling Units 1 to 1.5 tons 125 feet Cooling Units 2 to 5 tons 175 feet. 3) Always use a suction line accumulator when: a) underground pipe exceeds 10 feet on cooling only units b) piping length exceeds 75 feet on cooling only units 4) For split system heat pumps, size refrigerant lines to match factory supplied ttings. Vapor lines may be increased one size to minimize pressure drop. Liquid lines mus tNEVER be increased or decreased; the additional charge required for larger liquid lines will overow the accumulator in the heating cycle. 5) Substantial differences in elevation between indoor and outdoor units will have considerable effect on line size and ori ce size. 6) If not provided as standard, the following items are required when equivalent pipe length exceeds 50 ft. a) Low voltage start kit b) Off cycle timer c) Crankcase heater

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