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Page 1: ...well Pay attention to all safety warnings and any other special notes highlighted in the manual Improper installation of the unit or failure to follow safety warnings could result in serious injury de...
Page 2: ...e adjustment or maintenance may cause electrical shock or other hazardous conditions which may result in personal injury or property damage WARNING The information listed below and the next page must...
Page 3: ...eep snowdrift accumulation The support slab should be level Make sure that the drain holes in the bottom of the unit are not obstructed Roof Mounting The method used for roof mounting should be design...
Page 4: ...to interconnect the two stage thermostat the indoor unit and the outdoor unit The source of the 24 vac is located within the indoor unit air handler or furnace The C side of this power source may be g...
Page 5: ...d method of charging is by weighing in the additional refrigerant required If a charging scale is not available the next preferred charging method would be to use the sub cooling method After weighing...
Page 6: ...cle The operating speed history for both the current and the previous operating cycles For example with a first stage call in cooling if the setpoint was satisfied quickly within 20 minutes the unit w...
Page 7: ...tup delay can be skipped by shorting the two J4 Test pins indicated in Figure 7 for about 1 second while the compressor is off and waiting to start NOTE Use this feature with forethought because it wi...
Page 8: ...l only and none are active Also if no code numbers are displayed there have been no faults recorded or the history has been cleared NOTE As standard practice write down the fault codes in the historyb...
Page 9: ...oise if none the compressor may need to be replaced Check compressor phase to phase resistances they should all be less than 1 5 ohms and within 0 2 of each other If compressor noise is loud squealing...
Page 10: ...face Board Software Corruption This code indicates that the interface board needs to be replaced It should never be encountered Compressor Discharge Temp Sensor Failure This fault code indicates an op...
Page 11: ...11 FIGURES Charts Figure 2 Air Conditioner Control Panel Cover Removed Inverter black plastic case Interface Board Contactor Low Voltage Compartment...
Page 12: ...12 Figure 4 Low Voltage Compartment for Control Wiring Vapor Line Service Valve Liquid Line Service Valve Figure 5 Service Valves Figure 3 Power Wiring Terminals Wire Entry Ground Lug Contactor...
Page 13: ...oling Charging Chart Outdoor Temperature above 60 F Remove refrigerant if above curve Add refrigerant if below curve Liquid Line Temperature F Liquid Line Pressure psig 3 4 TON MODELS 2 TON MODELS 5 T...
Page 14: ...ay transformer kits 7 Ferrite chokes are shown by an ellipse enclosing wires The number of turns per wire through the choke is shown by for example 2X 7113640 6 14 HIGH PRESSURE SWITCH 12V GND DX DX I...
Page 15: ...s shown by for example 2X FIELD WIRING LEGEND LOW VOLTAGE HIGH VOLTAGE 7113710 6 14 HIGH PRESSURE SWITCH 12V GND DX DX INTERFACE BOARD REV VLV OUTDOOR TEMP 2 P M E T L I O C 1 P M E T L I O C SUCTION...
Page 16: ...3 4 5 6 7 8 9 10 Deg F k Temperature vs Resistance for All Thermistors Part 1 10 0 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 90 100 Deg F Temperature vs Resistance for All Thermistors Part 2 k...
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Page 20: ...common sense plays an important role as well Pay attention to all safety warnings and any other special notes highlighted in the manual Improper installation of the furnace or failure to follow safety...
