SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

TABLE OF CONTENTSPARAGRAPH NUMBERPageSPECIFIC WARNING AND CAUTION STATEMENTS ........................................... iiSPECIFIC WARNINGS AND CAUTIONS ...................................................... iiDESCRIPTION ............................................................................... 1-11.1 INTRODUCTION ..................................................................... 1--11.2 SERIAL NUMBER IDENTIFICATION .................................................... 1--11.3 DESIGN CHANGE DESCRIPTIONS .................................................... 1--11.4 SYSTEM (UNIT) INSTALLED DIMENSIONS ............................................. 1--91.5 SERIAL NUMBER LOCATIONS ........................................................ 1--141.6 AirV SYSTEM COMPONENT SPECIFICATIONS ......................................... 1--151.6.1 Refrigerant Charge ................................................................ 1--151.6.2 Compressor -- 115 Volts, 60 Cycles, 1 Phase ......................................... 1--151.6.3 Compressor -- 220 Volts, 50 Cycles, 1 Phase ......................................... 1--151.6.4 Thermostat Range (All Free Blow Units) .............................................. 1--151.6.5 Return Air Sensor (Thermistor) ...................................................... 1--151.6.6 Heat Pump Sensors (Thermistors) ................................................... 1--151.7 START--UP .......................................................................... 1--151.8 Dry Mode Function .................................................................... 1--151.9 REFRIGERANT CYCLE--STANDARD SYSTEM .......................................... 1--151.10 REFRIGERANT CYCLE -- HEAT PUMP ................................................. 1--161.10.1 Cooling .......................................................................... 1--161.10.2 Heating .......................................................................... 1--171.11 FREQUENTLY ASKED QUESTIONS AND ANSWERS .................................... 1--17TROUBLESHOOTING ......................................................................... 2-12.1 NO POWER TO UNIT ................................................................. 2--12.2 DUCTED UNIT WILL NOT OPERATE ................................................... 2--12.3 DUCTED UNIT WILL NOT COOL ....................................................... 2--12.4 COMPRESSOR POWER SUPPLY OPEN ............................................... 2--12.5 COMPRESSOR RUNS BUT CYCLES, FAN OPERATING ERRATICALLY .................... 2--12.6 CYCLES ON COMPRESSOR OVERLOAD .............................................. 2--22.7 INSUFFICIENT COOLING, COOLING AIR NOT ADEQUATE .............................. 2--22.8 CONDENSER AIR NOT ADEQUATE .................................................... 2--22.9 INSUFFICIENT COOLING ............................................................. 2--22.10 COMPRESSOR FLOODING ........................................................... 2--22.11 HEATER CYCLES ON LIMIT SWITCH (HEAT/ COOL VERSION ONLY) ..................... 2--22.12 AIR SWEEP NOT WORKING (FREE BLOW VERSION ONLY) ............................. 2--22.13 WATER LEAKAGE .................................................................... 2--22.14 INADEQUATE HEAT (FREE--BLOW HEAT ONLY) ........................................ 2--32.15 INADEQUATE HEAT (HEAT--PUMP) .................................................... 2--310/09iT--298