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EcoNet A2024AJVCA Installation Instructions Manual

Variable speed air conditioning outdoor units
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WARNING:
RECOGNIZE THIS SYMBOL
AS AN INDICATION OF
IMPORTANT SAFETY
INFORMATION
WARNING
THESE INSTRUCTIONS
ARE INTENDED AS AN AID
TO QUALIFIED, LICENSED
SERVICE PERSONNEL FOR
PROPER INSTALLATION,
ADJUSTMENT, AND
OPERATION OF THIS UNIT.
READ THESE INSTRUCTIONS
THOROUGHLY BEFORE
ATTEMPTING INSTALLATION
OR OPERATION. FAILURE
TO FOLLOW THESE
INSTRUCTIONS MAY RESULT
IN IMPROPER INSTALLATION,
ADJUSTMENT, SERVICE,
OR MAINTENANCE
POSSIBLY RESULTING IN
FIRE, ELECTRICAL SHOCK,
PROPERTY DAMAGE,
PERSONAL INJURY, OR
DEATH.
Do not destroy this manual.
Please read carefully and
keep in a safe place for future
reference by a serviceman.
[ ] indicates metric conversions.
92-104921-12-07 ( /
) Printed in USA
VARIABLE SPEED R-410A
AIR CONDITIONING
OUTDOOR UNITS
(-)A20 (20 SEER) EQUIPPED WITH
ECONET™ COMMUNICATIONS
Enabled
1

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Summary of Contents for EcoNet A2024AJVCA

  • Page 1 ADJUSTMENT, AND OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS THOROUGHLY BEFORE (-)A20 (20 SEER) EQUIPPED WITH ATTEMPTING INSTALLATION OR OPERATION. FAILURE ECONET™ COMMUNICATIONS TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION, ADJUSTMENT, SERVICE, OR MAINTENANCE POSSIBLY RESULTING IN FIRE, ELECTRICAL SHOCK,...

  • Page 2: Table Of Contents

    5.0 SYSTEM START-UP AND REFRIGERANT CHARGING......24-28 9.6 Cooling Mechanical Checks Flowchart ..........57 5.1 System Start-Up Overview..............24 9.7 Checking Transducers and Temperature Sensors ......58 5.2 Initial Power Up and EcoNet Communication Verification.....24 5.3 EcoNet Control Center Set-Up ............24 9.8 General Troubleshooting Guide ............60 5.4 Initial System Set-Up .................24...

  • Page 3: Important Safety Information

    1.0 IMPORTANT SAFETY INFORMATION WARNINGS: CAUTIONS: These instructions are intended as an aid to R-410A systems operate at approximately 60% qualified, licensed service personnel for proper higher pressures (1.6 times) than R-22 systems. Do installation, adjustment, and operation of this not use R-22 service equipment or components on unit.

  • Page 4: General Information

    Read the entire instruction manuals before starting designed to operate with matching communicating the installation. EcoNet™ enabled air-handlers, gas furnaces, and IMPORTANT: This product has been designed and Control Center. A conventional 24VAC 2-stage manufactured to meet certified AHRI capacity and...

  • Page 5: Importance Of Proper Indoor/Outdoor Match-Ups

    J = 1 PH, 208-230/60 MAJOR SERIES A = 1st GENERATION CAPACITY 24 = 24000 BTU/HR [7.03 kW] AVAILABLE MODELS 36 = 36000 BTU/HR [10.55 kW] (-)A2024AJVCA 48 = 48000 BTU/HR [14.07 kW] 60 = 60000 BTU/HR [17.58 kW] (-)A2036AJVCA (-)A2048AJVCA 20 SEER (-)A2060AJVCA...

  • Page 6: Electrical And Physical Data

    3.0 UNIT SPECIFICATIONS 3.2 Electrical and Physical Data Rev. 11/15 Electrical Fuse or HACR Circuit Compressor Breaker Fan Motor Model Phase Full Load Locked Rated Load Number Frequency (Hz) Amperes Rotor Minimum Maximum Amperes (-)A20 Voltage (Volts) Amperes (FLA) Amperes Amperes (RLA) (LRA)

  • Page 7: Installation

    4.0 INSTALLATION 4.1 Tools and Refrigerant 4.1.1 Tools Required for Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater than Installing and Servicing R-22. Recovery and recycle equipment, pumps, R-410A Models hoses, and the like must have design pressure ratings appropriate for R-410A.

  • Page 8: Choosing A Location

    4.0 INSTALLATION 4.2 Choosing a Location 4.2.1 Allowable Clearances 4.2.2 Operational Issues 12” to side intake louvers IMPORTANT: Locate the unit 24” to service access panels 60” vertical for fan discharge in a manner that will not prevent, impair, or compromise the performance of other equipment If space limitations exist, the following clearances installed in proximity to the unit.

  • Page 9: Corrosive Environments

    4.0 INSTALLATION 4.2 Choosing a Location (cont.) 4.3 Unit Mounting 4.2.3 Corrosive Environment The metal parts of this unit may be subject to 4.3.1 Unit Mounting Methods rust or deterioration if exposed to a corrosive environment. This oxidation could shorten the The outdoor unit may be mounted in a number of equipment’s useful life.

  • Page 10: Elevating Unit

    4.0 INSTALLATION NOTICE: 4.3.3 Elevating Unit DO NOT block drain openings on bottom of unit. WARNING: Secure an elevated unit and If unit must be elevated, secure unit and elevating its elevating stand in order to prevent tipping. Failure to stand such that unit and/or stand will not tip over do so may result in severe personal injury or death.

  • Page 11: Maximum Liquid Pressure Drop

    4.0 INSTALLATION 4.4.2.3 Maximum Liquid Pressure Oil to be Added = [(Charge Adjustment + OD Unit Name Plate Refrigerant Charge (oz.)) × Drop (0.022) – [(0.10) × (Compressor Name Plate Oil The total liquid line pressure drop must not exceed Charge (oz.))] 50 psig [345 kPa] to assure a solid column of liquid Example: An application requires 125ft of line set...

  • Page 12: Liquid Line Selection

    4.0 INSTALLATION 4.4.4 Liquid Line Selection [345 kPa]. The procedure for selecting the proper liquid line is as follows: The purpose of the liquid line is to transport warm • Measure the total amount of vertical separation be- sub-cooled liquid refrigerant between the outdoor tween the outdoor unit and indoor coil.
  • Page 13 4.0 INSTALLATION Table 2A: Refrigerant Line Sizing Chart (English Units) 20 SEER Variable Speed Air-Conditioners Outdoor Unit ABOVE or BELOW Indoor Unit Allowable Allowable Equivalent Length (Feet) Suction Unit Size Liquid Line Line <25 26-50 51-75 76-100 101-125 126-150 Size Size Maximum Vertical Rise (Outdoor Unit Below Indoor Unit)* / Capacity Multiplier 1/4”...
  • Page 14 4.0 INSTALLATION Table 2A: Refrigerant Line Sizing Chart (English Units) 20 SEER Variable Speed Air-Conditioners Outdoor Unit ABOVE or BELOW Indoor Unit Allowable Allowable Equivalent Length (Meters) Liquid Line Suction Line Unit Size Size Size <8 8-15 16-23 24-30 31-38 39-46 mm [in.] mm [in.]...

  • Page 15: Line Set Installation

    4.0 INSTALLATION 4.5 Line Set Installation • If tubing is to be run underground, it must be run in a • Blow out the liquid and suction lines with dry nitro- gen before connecting to the outdoor unit and indoor sealed watertight chase.

  • Page 16: Relative Location Of Indoor And Outdoor Units

    4.0 INSTALLATION 4.5 Line Set Installation (cont.) 4.5.2 Relative Location of Indoor and Outdoor Units 4.5.2.1 Outdoor Unit Level or Near Level to Indoor Coil Line Set REFERENCE TABLE 2 FOR MAXIMUM LENGTH LIMITATIONS IDEALLY, LINE SET SLOPES AWAY FROM OUTDOOR UNIT. VERIFY SUB-COOLING PRIOR TO EXPANSION DEVICE, INSULATED LIQUID LINE IN UNCONDITIONED SPACE FOR...

  • Page 17: Outdoor Unit Below Indoor Unit

    4.0 INSTALLATION 4.5.2.2 Outdoor Unit Below Indoor Coil (Long Line Set Applications) INSULATED SUCTION LINE FULL LENGTH INVERTED TRAP VERIFY LIQUID SUBCOOLING EVEN WITH TOP PRIOR TO EXPANSION DEVICE OF THE COIL IN THE COOLING MODE. INSULATE LIQUID LINE IN UNCONDITIONED SPACE FOR LONG LINE APPLICATIONS REFERENCE TABLE 2 FOR...

  • Page 18: Outdoor Unit Above Indoor Unit

    4.0 INSTALLATION 4.5.2.3 Outdoor Unit Above Indoor Coil INSULATED SUCTION LINE FULL LENGTH INSULATED LIQUID LINE IN UNCONDITIONED SPACE FOR LONG LINES APPLICATIONS REFERENCE TABLE 2 FOR MAXIMUM LENGTH AND VERTICAL SEPARATION LIMITATIONS Figure 5 For applications with the outdoor unit above the indoor coil the following is required: •...

  • Page 19: Tubing Connections

    4.0 INSTALLATION 4.5.3 Tubing Connections Indoor coils have only a holding charge of dry nitrogen. Keep all tube ends sealed until connections are to be made. • Use type “L” copper refrigeration tubing. Braze the connections with the following alloys: –...

  • Page 20: Initial Leak Testing

    EcoNet™ control temperatures that occur there. center or thermostat. By doing this, the controls will im- mediately close the EXV followed immediately by open- 4.7 Evacuation...

  • Page 21: Final Leak Testing

    The four 18 AWG low-voltage control wires must pressor failure will occur. be installed from the EcoNet™ Control Center to the 4.8 Final Leak Testing indoor unit and from the indoor unit to the outdoor unit.

  • Page 22: Conventional 24Vac Thermostat Control Wiring Connections

    C 24 VAC common IMPORTANT: The preferred method • Data wire E1 Communications for unit installation and operation is by the EcoNet™ • Data wire E2 Communications Communicating System which allows access to The EcoNet™ enabled air handler or furnace is the fault history of the system.

  • Page 23: Power Wiring

    4.0 INSTALLATION 4.9 Control Wiring (cont.) 4.10 Power Wiring TYPICAL 2-STAGE THERMOSTAT: (-)A20 AIR CONDI- Install a branch circuit disconnect within sight of the TIONER WITH ELECTRIC HEAT USING A HUMIDISTAT unit and of adequate size to handle the minimum circuit FOR DEHUMIDIFICATION ampacity (MCA) current (see “Electrical Data”...

  • Page 24: Grounding

    Control Center prior to starting system. off position initially. Within 45 seconds of power being Cooling dehumidification must be disabled for indoor applied, the EcoNet Control Center should detect the air-flow verification and refrigerant charging. The indoor and outdoor units. A “0” for Standby Mode will...

  • Page 25: Tm Control Center Service Menu

    Thermostat verification and refrigerant charging. Check to make sure “On-Deman Dehumidification” is turned off in the EcoNet™ Control Center (or on 1. Set the thermostat to the cool mode. the VSODC for conventional 24VAC control applica- 2. Adjust the set point several degrees below the tions).

  • Page 26: Indoor Air-Flow Verification

    VSODC memory card. When NOTICE: AHRI rated CFM may differ slightly from the indoor blower is operating, the EcoNet Control values in the table below. Outdoor Unit Displayed Indoor Model No.

  • Page 27: Measurement Device Set-Up

    5.0 SYSTEM START-UP AND REFRIGERANT CHARGING 5.8.1 Measurement Device IMPORTANT: Charging by weight is Set-Up not always accurate since the application can affect the optimum refrigerant charge. Charging by weight is considered a starting point ONLY. Always check 1. With an R-410A gauge set, attach the high- the charge by using the Charging Chart and adjust as pressure hose to the access fitting on the liquid necessary.

  • Page 28: Final Charging By Liquid Subcooling

    Restore power to unit at disconnect if required. -90 [-68] 0 [-28] 48.4 65 [18] 185.1 130 [54] 476.5 • Exit Charging Mode and configure EcoNet™ -80 [-62] 5 [-15] 55.1 70 [21] 201.0 135 [57] 508.0 Control Center or thermostat per the thermostat...

  • Page 29: Normal Sequence Of Operation

    Over- being set up for EcoNet communications using an drive Mode can be lowered using the EcoNet Con- EcoNet enabled air-handler or gas furnace trol Center Installer Menu (RPM Blocking) should the and an EcoNet Control Center.

  • Page 30: Sequence Of Operation For Conventional 24Vac Thermostat Controls

    24VAC 2-stage thermostat rather • If the thermostat calls for 2 stage operation, the than the EcoNet Control Center, the system will oper- compressor will ramp to its full capacity speed and ate as follows: the RHMV air-handler will deliver the maximum •...

  • Page 31: Compressor

    Although the (-)A20 designs have been designed to temperature remains at a safe level. minimize floodback, on rare occasions floodback can occur. During these conditions, the EcoNet™ Variable Speed Outdoor Control has been programmed to slow the compressor speed until all of the liquid refrigerant exits the compressor shell.

  • Page 32: Econet Tm Variable Speed Outdoor Control (Vsodc)

    Speed Outdoor Control (VSODC) that interfaces with (for future use) the inverter, EcoNet Control Center, and EcoNet enabled air-handler or gas furnace using the EcoNet 11. Electronic expansion valve connection serial communication protocol. The VSODC provides (not used) a low voltage terminal block for control wiring and 12.

  • Page 33: Test & Sw2 Buttons

    7.7.5 Replacement of the VSODC Each control board in the EcoNet™ Communication 7.7.4 Menu Structure Network needs information specific to the unit the con- trol is installed in. This information is called model data...

  • Page 34: Filter & Ferrite Rings

    (HPC) open when the com- VSODC and EcoNet Control Center for several pressor discharge pressure of approximately 610 control functions and is displayed on the EcoNet PSIG and automatically close when the pressure Control Center. drops below approximately 420 PSIG...

  • Page 35: Outdoor Fan Motor

    Control (VSODC) which communicates the level 3. Choke Connection of system capacity that is required to the inverter 4. High Pressure control connection (HPS) – with based on input from the EcoNet Control Center automatic reset or conventional 24VAC 2-stage thermostat. The 5.

  • Page 36: Suction Pressure Transducer

    The measured temperature is paired with the saturated suction temperature and used by the VSODC to calculate superheat for diagnostics without requiring gauges to be attached. The superheat is displayed on the EcoNet Control Center status menu. IMPORTANT: The clamp on the suction line thermistor securely attaches to the suction line between the 10 and 2 o’clock position...

  • Page 37: Active System Protection Features

    VSODC will lock the compressor out and will speed based on the capacity demand. flash a 29L fault code and the EcoNet Control Center will display a High Refrigerant Pressure Lockout fault on the screen. A manual reset is required for the VSODC to exit the compressor lock-out mode and clear the fault.

  • Page 38: Low Suction Pressure/Loss Of Charge

    2. The outdoor fan motor will continue to operate failed outdoor motor, or dirty outdoor coil. during the 5 minute compressor off delay. 3. The VSODC and EcoNet Control Center will 8.7 Low Suction Pressure/ display the applicable fault code.

  • Page 39: Over And Under Voltage

    3 faults within a single call for operation. 8.14 Sensor Failure Default Operation If the controls sense an externally connected code will be displayed on the EcoNet Control sensor has failed, the system will enter a fail safe Center and Variable Speed Outdoor Control operating mode and will continue to condition the identifying which sensor has failed.

  • Page 40: Diagnostics And Troubleshooting

    Procedure 2) The compressor will start and the outdoor fan will operate. Fault codes can be recalled using the EcoNet 3) The display will change to a steady “c,” or “C,” Control Center service menu or by using the to show the current demand for unit opera- Variable Speed Outdoor Control (VSODC) menu.

  • Page 41: Status And Diagnostic Codes

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.3 Status and Diagnostic Codes Descriptions of the VSODC status codes are provided below. NOTE: Codes must be read from correct side to avoid an error in reading codes. Dual 7-Segment Status/Possible Cause - Status Code Description LEDs Display Troubleshooting Information Code...
  • Page 42 9.3 Status and Diagnostic Codes (cont.) The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 43 9.3 Status and Diagnostic Codes The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 44 9.3 Status and Diagnostic Codes (cont.) The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 45 9.3 Status and Diagnostic Codes The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 46 9.3 Status and Diagnostic Codes (cont.) The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 47 9.3 Status and Diagnostic Codes The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 48 9.3 Status and Diagnostic Codes (cont.) The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...
  • Page 49 9.3 Status and Diagnostic Codes The error codes below will be displayed at the EcoNet™ Control Center under Service window / Current Faults or in the Fault History and will be time and date stamped. VSODC (Variable Speed Outdoor Unit Control –...

  • Page 50: Active Protection Fault Details

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details IMPORTANT: L8 – Compressor Model Unknown – A900_O This mode of active Inverter Identity Fault protection must be manually reset If the inverter compressor model is not set, the inverter will keep the compressor from operation. The VSODC will lock out the compressor to keep it from operating and flash an ”L”...
  • Page 51 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details (cont.) IMPORTANT: L15 – PIM Over-temp – T908_O Inverter Fault This mode of active If the inverter detects an over temperature condition protection must be manually reset in the Power Module circuit the inverter will auto- matically shut the compressor off and keep it from operation.
  • Page 52 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details (cont.) automatically shut the compressor off and keep it from operation. If this fault occurs 3 times during one call for operation the VSODC will lock out the compressor to keep it from continuing to operate and flash an ”L” on the dual 7-segment LEDs followed by a 15.
  • Page 53 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details (cont.) IMPORTANT: IMPORTANT: This mode of active This mode of active protection must be manually reset. protection must be automatic reset once the discharge line thermistor fault is corrected. L16 – Com/DSP Comm Fault – A920_O Inverter L16 –...
  • Page 54 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details (cont.) IMPORTANT: 16 – HP Sensor Not Configured – T926_O This mode of active If the inverter is not configured or does not hold protection must be manually reset. the configuration for the high pressure switch in the 27- AC Input Under Voltage –...
  • Page 55 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details (cont.) the designed operating envelope then the compressor will be kept from operating. IMPORTANT: It is common during startup and shutdown for the compressor to venture 83 – Evaporator Temperature Thermistor Failure – outside the designed operating envelope.

  • Page 56: Electrical Checks Flowchart

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.4 Active Protection Fault Details (cont.) D1 – Memory Card Configuration Data Write IMPORTANT: Failure – A951_O This mode of active protection must be manually reset. If the VSODC identifies issue(s) writing the model data from the memory card, the VSODC will automatically shut the compressor off and keep it from operation.

  • Page 57: Cooling Mechanical Checks Flowchart

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.6 Cooling Mechanical Checks Flowchart Outdoor Unit Running? Go to Electrical Checks Flowchart Pressure Problems? High Head Pressure or Low Liquid Low Suction Compressor Envelope Pressure Pressure Protection Low on Dirty Filters Charge Dirty Outdoor Coil Low Ambient Dirty Indoor Coil Inoperative Outdoor...

  • Page 58: Checking Transducers And Temperature Sensors

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.7 Checking Transducers and Temperature Sensors TRANSDUCERS: Starting with some arbitrary numbers completion of the formula should look like this: Checking transducers for accuracy can be tricky at best. A technician will be required to do some SUCTION LINE TRANSDUCER: voltage reading and algebraic math to validate the VDC out = 2.4...
  • Page 59 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.7 Checking Transducers and Temperature Sensors (cont.) TEMPERATURE SENSORS: All the temperature sensors/thermistors used in Apply resistance measurements to the chart found the equipment use the same scale of 10,000 Ohms below and compare to the control. at 77ºF (25ºC).

  • Page 60: General Troubleshooting Guide

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.8 General Troubleshooting Guide WARNING: Disconnect all power to unit before servicing. Contactor may break only one side. Failure to shut off power can cause electrical shock resulting in personal injury or death. SYMPTOM POSSIBLE CAUSE REMEDY Unit will not run •...

  • Page 61: Service Analyzer Charts

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.9 Service Analyzer Charts (cont.) COMPRESSOR OVERHEATING - HIGH DISCHARGE TEMP POSSIBLE CAUSE CHECK/REMEDY SYMPTOM High superheat Low Charge Check system charge. (greater than Verify suction thermistor operation (10k thermistor) Replace thermistor. F [8.3 C] at coil) Verify pressure transducer operation input and Replace thermistor and/or harness and/or control...
  • Page 62 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.9 Service Analyzer Charts (cont.) COMPRESSOR OVERHEATING - HIGH DISCHARGE TEMP (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Low charge Check system charge. Low evaporator airflow Dirty coil. Short cycling of Dirty filter. compressor (cont.) Duct too small or restricted. Faulty internal overload Replace compressor.
  • Page 63 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.9 Service Analyzer Charts (cont.) CONTAMINATION SYMPTOM POSSIBLE CAUSE REMEDY Moisture Poor evacuation on installation or during service High head pressure Noncondensibles air Unusual head and Wrong refrigerant or mixed refrigerants suction pressure readings In each case, the cure is the same. Foreign matter- Copper tubing cuttings Remove refrigerant.
  • Page 64 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.9 Service Analyzer Charts (cont.) REFRIGERANT FLOOD BACK SYMPTOM POSSIBLE CAUSE REMEDY Bad pressure reading Check transducer wiring. Suction thermistor in wrong location Relocate thermistor. Poor system control using an EXV Bad suction thermistor Replace thermistor. Improper superheat setting (less than 5 F [2.8 Adjust Exv SH setpoint dipswitches and validate valve operation.
  • Page 65 9.0 DIAGNOSTICS & TROUBLESHOOTING 9.9 Service Analyzer Charts (cont.) ELECTRONIC EXPANSION VALVES (cont.) SYMPTOM POSSIBLE CAUSE REMEDY Moisture causing valve to stick open Recover refrigerant, replace filter-drier, evacuate system, and recharge. Dirt or foreign material causing valve to stick open Recover refrigerant, replace filter-drier, remove EXV and purge with nitrogen, replace filter drier, and recharge.

  • Page 66: Troubleshooting Tips

    9.0 DIAGNOSTICS & TROUBLESHOOTING 9.10 Troubleshooting Tips COOLING MODE TROUBLESHOOTING TIPS INDICATORS SYSTEM DISCHARGE SUCTION SUPERHEAT SUBCOOLING PROBLEM PRESSURE PRESSURE Normal: 5°–15°F Normal: See [2.8° – 8.3°C] Charging Chart Overcharge High High High Undercharge High Liquid Restriction (Drier) High High Low Indoor Airflow Dirty Outdoor Coil High...

  • Page 67: Outdoor Unit Maintenance

    10.0 OUTDOOR UNIT MAINTENANCE 10.1 Outdoor Coil Cleaning The outdoor fan draws air across the coil during an angle. Washing from the top of the coil down operation which results in contaminants collecting from the inside out is the most effective method of on and between the aluminum fins.

  • Page 68: Wiring Diagram

    11.0 WIRING DIAGRAM UTIL UTIL 2...

  • Page 69: Appendix

    The “Yes” should turn to a value of “No.” air conditioner rated combination requires an 6. Once the dehumidification feature is turned EcoNet™ Control Center (according to the AHRI off, the Aux 1 configuration needs to be set to rating database) as an accessory to obtain the normally closed (N.C.) as to permit a closed...
  • Page 70 12.0 APPENDIX 12.1 Agency Performance Audit Test Instructions (cont.) 8. Cycle Testing test” on the “installer checkout” screen or open the normally closed switch attached to a. The Aux #1 configuration performed the air handler or furnace Aux 1 inputs. above permits a N.C.

This manual is also suitable for:

A2036ajvcaA2048ajvcaA2060ajvca

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