American Standard AccuLink 4A6V0X24A1000A Service Facts
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American Standard AccuLink 4A6V0X24A1000A Service Facts

Variable speed heat pumps and air conditioners
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Service Facts
American Standard Link or AccuLink™ ™
Variable Speed Heat Pumps and Air Conditioners
4A6V0X24A1000A
4A6V0X36A1000A
4A6V0X48A1000A
4A6V0X60A1000A
The Diagnostics Mobile App is available by scanning a QR code
located inside this unit or by searching for the Link Diagnostics App
in your App Store ® .
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
August 2022
4A7V0X24A1000A
4A7V0X36B1000A
4A7V0X48A1000A
4A7V0X60A1000A
4A7V0X61A1000A
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
4 4 A A - - V V 0 0 X X - - S S F F - - 1 1 C C - - E E N N
N N o o t t e e : : "Graphics in this document are for representation only. Actual
model may differ in appearance."
N N o o t t e e : : This unit can be used in AccuLink ™ mode or American Standard
Link mode.

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Summary of Contents for American Standard AccuLink 4A6V0X24A1000A

  • Page 1 N N o o t t e e : : “Graphics in this document are for representation only. Actual model may differ in appearance.” N N o o t t e e : : This unit can be used in AccuLink ™ mode or American Standard Link mode.

  • Page 2: Safety Section

    . . ©2022 American Standard Heating and Air Conditioning...
  • Page 3 Platinum 80 Furnace • Approved System Accessories Note: See AHRI directory for approved indoor and outdoor model combinations. Only Trane / American Standard coils and air handlers are approved for use with variable speed outdoor unit. Table 1. Operating Range Cooling 55°...

  • Page 4: Product Specifications

    Product Specifications HEAT PUMP MODELS OUTDOOR UNIT (a) (b) 4A6V0X24A1000A 4A6V0X36A1000A 4A6V0X48A1000A 4A6V0X60A1000A POWER CONNS. — V/PH/HZ 208/230/1/60 208/230/1/60 208/230/1/60 208/230/1/60 MIN. BRCH. CIR. AMPACITY 17.0 26.0 29.0 37.0 BR. CIR. PROT. RTG. — MAX. (AMPS) COMPRESSOR SCROLL SCROLL SCROLL SCROLL NO.
  • Page 5 P P r r o o d d u u c c t t S S p p e e c c i i f f i i c c a a t t i i o o n n s s AIR CONDITIONER MODELS OUTDOOR UNIT (a) (b)
  • Page 6 P P r r o o d d u u c c t t S S p p e e c c i i f f i i c c a a t t i i o o n n s s AIR CONDITIONER MODELS OUTDOOR UNIT (a) (b)

  • Page 7: Subcooling Charging In Cooling Between 55° F And 120° Od Ambient

    4. Locate the designated subcooling target from the performance. unit nameplate. 10. American Standard Link systems have an American 5. At startup, or whenever charge is removed or Standard Link Smart Charge feature available. added, the system must be operated for a minimum...

  • Page 8: Subcool Charging Correction Charts

    UNIT BE CONFIGURED FOR 400 CFM/TON IN ACCULINK MODE ONLY. Figure 3. Subcool Charging Corrections — 4.0 Ton Note: System will auto configure airflow in American Standard Link mode. 4.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) Add 1°...

  • Page 9: Refrigerant Charging Chart

    Comfort Control, UX360 User Interface and Diagnostic Mobile App. Outdoor Temperature must be between 55°F and 120°F with Indoor Temperature kept between 70°F and 80°F. Important: Variable Speed Outdoor units requires the indoor unit be configured for 400 cfm/ton in AccuLink mode. Unit will auto- configure in American Standard Link mode. 4A-V0X-SF-1C-EN...
  • Page 10 Wiring 4A-V0X-SF-1C-EN...

  • Page 11: Integrated Variable Speed Control (Ivsc) Inputs/Outputs

    “American Standard Link only” DATA D R B MONITOR TOOL ALUMINUM COVER PLATE Field Connection Input See Table 2 D - Data R - 24VAC Hot* B - 24VAC Common *Only required for load shed and American Standard Link Smart Charge 4A-V0X-SF-1C-EN...

  • Page 12: Integrated Variable Speed Control Board Led Indicators

    POWER UP DELAY (GREEN) SOLID ON TEST MODE INTERMITTENT 1 FLASH EVERY 4 SECONDS HARD LOCKOUT Note: The STATUS Light is not illuminated in American Standard Link mode. Table 3. LED’S in AccuLink and American Standard Link modes RATE DESCRIPTION INDICATION SLOW...

  • Page 13: Sump Heat Control

    I I n n t t e e g g r r a a t t e e d d V V a a r r i i a a b b l l e e S S p p e e e e d d C C o o n n t t r r o o l l B B o o a a r r d d L L E E D D I I n n d d i i c c a a t t o o r r s s Sump Heat Control Sump Heat Control Guidelines At power up;...

  • Page 14: Sequence Of Operation

    Sequence of Operation C C o o n n t t r r o o l l O O p p e e r r a a t t i i o o n n a a l l O O v v e e r r v v i i e e w w Regardless of the load value or stage demand, the outdoor system will start and ramp to a target startup Operation of the communicating, variable speed...
  • Page 15 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Heat pumps are also equipped with an Electronic override of 15 minutes has lapsed.

  • Page 16: Defrost Control (Heat Pump Only)

    Thermostat on AccuLink systems or from the temperature at or below 35° F. CANda, UX360 User Interface or Diagnostic Mobile App in American Standard Link systems. Indoor • Heat/Cool Demand (HCD) from the communicating AUX heat will energize when FRC DFT TEST is comfort control for at least two minutes or more.

  • Page 17: Compressor Dome Temperature

    SENSORS Compressor Dome Temperature THERMISTOR VOLTS DC RESISTANCE TEMP F TEMP C (PIN TO PIN) This table shows the corresponding voltage, resistance (OHMS) and temperature readings for the Dome Temperature 107.22 0.47 110.00 0.44 Sensor when measured across pins 1 and 10. The 112.78 0.41 power source for the Dome Temperature Sensor is...

  • Page 18: Ambient Temperature Sensor (Ods)

    S S E E N N S S O O R R S S Ambient Temperature Sensor Figure 7. Ambient Temperature Sensor Pins 5 & 14 (Black) (ODS) Integrated Variable Speed Control Board These tables show the corresponding voltage, resistance and temperature readings for the Ambient, Temperature Sensor when measured across pins 5 &...
  • Page 19 A working Liquid Temperature Sensor is required for: thermistor input for sensing the coil temperature. This • American Standard Link Smart Charge reading is used by the defrost algorithm on heat pump units. The thermistor has a nominal resistance of 10k •...
  • Page 20 0.66 0.83 A working Liquid Pressure Transducer is required for 1.00 the following: 1.18 • American Standard Link Smart Charge 1.35 • Diagnostics; Charge Level 1.52 1.69 The Liquid Pressure Transducer control is measured across pins 16 and 17 and has an active 0–4.9VDC 1.86...

  • Page 21: Suction Line Pressure Transducer

    S S E E N N S S O O R R S S Suction Line Pressure Figure 12. Suction Pressure Transducer Pins 7 (White) & 8 (Black) Transducer This table shows the corresponding voltage and pressure readings for the Suction Line Pressure Transducer when measured across pins 7 and 8.

  • Page 22: Variable Speed Alert Codes

    Variable Speed Alert Codes Display Alert Alert Alert Sub- State action on State action on Assembly Possible Cause Group Description Code alarm occurrence clearance Text Shutdown. Send Err code Resume normal Control Internal control Control failure, replace CTRL FLT to thermostat and Fault operation.
  • Page 23 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 24 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 25 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 26 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 27 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 28 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 29 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 30 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 31 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 32 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 33 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 34 V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s Display Alert Alert...
  • Page 35 American Standard Link Alert Code Addendum Severi- Alarm Description Problem Description Alarm ID Short Text Possible Cause Liquid temp sensor open or shorted **Zero or infinite resistance Liquid temp sensor out of range **Compare resistance value of sensor to chart in literature...
  • Page 36 A A m m e e r r i i c c a a n n S S t t a a n n d d a a r r d d L L i i n n k k A A l l e e r r t t C C o o d d e e A A d d d d e e n n d d u u m m Severi- Alarm Description Problem Description...

  • Page 37: Refrigeration Circuits For Heating And Cooling

    Refrigeration Circuits for Heating and Cooling H H e e a a t t i i n n g g M M o o d d e e l l s s Figure 13. 2 Ton HP (X24 Models) PRINTED FROM DRAWING D161217revA Figure 14.
  • Page 38 R R e e f f r r i i g g e e r r a a t t i i o o n n C C i i r r c c u u i i t t s s f f o o r r H H e e a a t t i i n n g g a a n n d d C C o o o o l l i i n n g g Figure 15.
  • Page 39 R R e e f f r r i i g g e e r r a a t t i i o o n n C C i i r r c c u u i i t t s s f f o o r r H H e e a a t t i i n n g g a a n n d d C C o o o o l l i i n n g g C C o o o o l l i i n n g g M M o o d d e e l l s s Figure 17.
  • Page 40 R R e e f f r r i i g g e e r r a a t t i i o o n n C C i i r r c c u u i i t t s s f f o o r r H H e e a a t t i i n n g g a a n n d d C C o o o o l l i i n n g g Figure 19.
  • Page 41 R R e e f f r r i i g g e e r r a a t t i i o o n n C C i i r r c c u u i i t t s s f f o o r r H H e e a a t t i i n n g g a a n n d d C C o o o o l l i i n n g g Figure 21.

  • Page 42: Load Shedding

    Load Shedding E E x x t t e e r r n n a a l l S S h h u u t t d d o o w w n n compressor operation and closed contacts will enable compressor operation.

  • Page 43: Communication Loss

    Communication Loss No LEDs are lighting: Status and Comm Power Applied to Unit but no Comm LED Scan to see a video on the Power Off 2 min (need to wait to Communications completely bleed off voltage for Troubleshooting Measure DC Bus Voltage with true reset) and then Power On multimeter (+VDC to -VDC) WARNING...

  • Page 44: Breaker Trip Procedure

    Breaker Trip Procedure Breaker Trip Procedure WARNING · Verify wiring · Verify sensor readings · Check breaker 400 VOLTS · Check breaker size ELECTRICAL HAZARD · Check for GFCI on circuit Scan to see a · Replace breaker if necessary Failure to follow this video on the warning could result in...

  • Page 45: Start Compressor

    Start Compressor Drive Current Failures Scan to see a video on the Compressor Troubleshooting Any Error 177 within 30 seconds of operation B reaker T rip O ccurs Inspect terminal connector to compressor for open circuits G o to B reaker T rip P rocedure WARNING W as a repair of...

  • Page 46: Compressor Verification: Parameters

    Compressor Verification: Parameters Compressor Verification: Parameters Scan to see a video on the Compressor Parameters In CANda menu under unit controls verify PM tonnage matches model number Does PM match model? Replace PM In CANda menu under unit controls verify that compressor size matches compressor model number (DRV COMP SIZE) WARNING...

  • Page 47: Run Drive Diagnostic Test

    Run Drive Diagnostic Test Select Run Drive Test from the Control menu in CANda, or from Diagnostic Mobile App in American Standard Link mode. Scan to see a video on Run Drive Diagnostics Drive Test: Test Response 1: Passed: No Fault...

  • Page 48: Compressor Verification: Short

    Compressor Verification: Short Compressor Verification:Short WARNING Scan to see a video on Shorted Compressor 400 VOLTS Disconnect compressor wiring Windings ELECTRICAL HAZARD Failure to follow this harness from drive. warning could result in personal injury or death. WAIT TWO (2) MINUTES after disconnecting power prior to touching electrical components as they may...

  • Page 49: Compressor Verification: Open

    Compressor Verification: Open WARNING Compressor Verification: Open Scan to see a 400 VOLTS video on Open ELECTRICAL HAZARD Compressor Failure to follow this Windings warning could result in personal injury or death. WAIT TWO (2) MINUTES after disconnecting power prior to touching electrical components as they may hold a dangerous charge...

  • Page 50: Inverter Temperature

    Inverter Temperature Excessive Inverter Excessive Rectifier Excessive Rectifier Excessive Inverter Temperature Temperature Temperature De-rate Temperature De-rate Shutdown Shutdown WARNING 400 VOLTS ELECTRICAL HAZARD Check system condition: outdoor Failure to follow this temp sensor, suction temp, suction warning could result in personal injury or death.

  • Page 51: Electronic Expansion Valve (Eev) Troubleshooting Flowchart

    Electronic Expansion Valve (EEV) Troubleshooting Flowchart The Electronic Expansion Valve (EEV) installed in this heat pump is designed to control superheat entering the compressor when the system is running in mechanical heating mode. During cooling mode, refrigerant flow is controlled by the expansion device in the indoor unit. Therefore, any operational problems observed in cooling mode are not caused by the outdoor EEV.
  • Page 52 Communicating Display Assembly (CANda) NAVIGATION • To enter and exit Technician Menus, press the Up/Down buttons simultaneously for 5 seconds. • To return to the Home Screen, press the Up/Down buttons SYSTEM STATUS simultaneously for 5 seconds. • To return to the top level of any menu, press the Left/Right buttons XXXXXXXXXXXXXXXX simultaneously for 5 seconds.
  • Page 53 C C o o m m m m u u n n i i c c a a t t i i n n g g D D i i s s p p l l a a y y A A s s s s e e m m b b l l y y ( ( C C A A N N d d a a ) ) Home Screen –...

  • Page 54: Technician Monitor Menu

    Technician Monitor Menu T T h h e e M M o o n n i i t t o o r r M M e e n n u u d d i i s s p p l l a a y y s s i i n n f f o o r r m m a a t t i i o o n n o o n n S S y y s s t t e e m m s s t t a a t t u u s s , , D D r r i i v v e e s s t t a a t t s s a a n n d d t t h h e e S S y y s s t t e e m m T T a a c c h h o o m m e e t t e e r r .
  • Page 55 T T e e c c h h n n i i c c i i a a n n M M o o n n i i t t o o r r M M e e n n u u Continued from previous page SYSTEM MENU MONITOR MENU...

  • Page 56: Technician Alert Menu

    Technician Alert Menu The Alert Menu displays active alerts. N N o o t t e e : : Clearing Alert History will also clear Active Alerts and will reset the Outdoor Control without the need to cycle power. MONITOR ACTIVE ALERTS ALERT HISTORY MENU...

  • Page 57: Technician Alert History Menu

    Technician Alert History Menu N N o o t t e e : : Clearing Alert History will also clear Active Alerts and will reset the Outdoor Control without the need to cycle power. ACTIVE CONFIG ALERT HISTORY ALERTS MENU Scan to see a video about the CANda Alert...

  • Page 58: Technician Configuration Menu

    Technician Configuration Menu S S y y s s t t e e m m p p a a r r a a m m e e t t e e r r s s a a n n d d o o p p t t i i o o n n s s a a r r e e r r e e p p o o r r t t e e d d a a n n d d s s e e t t f f r r o o m m t t h h e e C C o o n n f f i i g g M M e e n n u u .

  • Page 59: Technician Control Menu

    Technician Control Menu Forced Defrost, EEV, LSOV, Evacuation, Run Drive and N N o o t t e e : : If system is in Lockout, Unit Tests are not Run Outdoor Fan tests are initiated and performed available. from the Technician Control Menu. Drive Test Notes CONFIG MONITOR...
  • Page 60 T T e e c c h h n n i i c c i i a a n n C C o o n n t t r r o o l l M M e e n n u u NOTES: Forced Defrost Continued from previous page 1.

  • Page 61: Tech Control - Charge/Check Charge Modes

    TECH CONTROL — Charge/Check Charge Modes Charge / Check Charge Notes Introduced with AOC Software Version 2, Fall of 2014. After initiating the Charging or Check Charge Mode from the comfort CONFIG MONITOR CONTROL MENU control, the OD unit CANda enters the Control Menu and the MENU MENU corresponding screen (ok to charge for the cooling test mode &...

  • Page 62: Sound Data

    Sound Data Full Octave Sound Power [dB] A-Weighted Speed Sound Power Model Mode 1000 2000 4000 8000 Level [dB(A)] Cool 70.9 50.3 51.8 52.3 50.4 42.0 37.7 39.9 Cool 76.3 65.2 62.7 64.1 60.5 55.7 49.5 45.0 4A6V0X24A Heat 69.8 52.9 52.8 57.5...
  • Page 63 S S o o u u n n d d D D a a t t a a Full Octave Sound Power [dB] A-Weighted Speed Sound Power Model Mode 1000 2000 4000 8000 Level [dB(A)] 5 Hz 71.2 49.8 51.4 58.3 51.6 44.2...

  • Page 64: Pressure Curves

    Pressure Curves Figure 22. 2 Ton HP (X24 Models) TAMXC0B30V21 TAMXC0B30V21 Cooling with Electronic Expansion Valve Heating INDOOR ENTERING INDOOR ENTERING DRY BULB CURVES WET BULB CURVES TOP TO BOTTOM TOP TO BOTTOM 80, 70, AND 60 DEG F. 71, 67, 63 AND 59 DEG F. Indoor Temperature OUTDOOR TEMPERATURE (Degree F) INDOOR ENTERING...
  • Page 65 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 23. 3 Ton HP (X36 Models) TAMXC0C36V31 TAMXC0C36V31 Cooling with Electronic Expansion Valve Heating INDOOR ENTERING INDOOR ENTERING...
  • Page 66 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 24. 4 Ton HP (X48 Models) PRESSURE CURVES FOR 4TWV0048A1000A TAMXC0C48V41 TAMXC0C48V41 Cooling with Electronic Expansion Valve Heating...
  • Page 67 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 25. 5 Ton HP (X60 Models) TAMXC0C60V51 TAMXC0C60V51 Cooling with Electronic Expansion Valve Heating INDOOR ENTERING INDOOR ENTERING...
  • Page 68 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 26. 2 Ton AC (X24 Models) TAMXC0B30V21 Cooling with Electronic Expansion Valve INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM...
  • Page 69 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 27. 3 Ton AC (X36 Models) TAMXC0C36V31 Cooling with Electronic Expansion Valve INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71,...
  • Page 70 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 28. 4 Ton AC (X48 Models) TAMXC0C48V41 Cooling with Electronic Expansion Valve INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM...
  • Page 71 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 29. 5 Ton AC (X60 Models) TAMXC0C60V51 Cooling with Electronic Expansion Valve INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM...
  • Page 72 P P r r e e s s s s u u r r e e C C u u r r v v e e s s Figure 30. 5 Ton AC (X61 Models) TAMXC0C60V51 Cooling with Electronic Expansion Valve INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71,...

  • Page 73: Warranty Claim Process Integrated Variable Speed Control (Drive)

    Warranty Claim Process Integrated Variable Speed Control (Drive) W W h h e e n n a a t t e e c c h h n n i i c c i i a a n n c c a a l l l l s s f f o o r r p p r r e e - - a a u u t t h h o o r r i i z z a a t t i i o o n n Servicing Dealers must obtain a pre-authorization number from a Field Service Representative (FSR) or a f f r r o o m m t t h h e e j j o o b b s s i i t t e e : :...
  • Page 74 Notices F F C C C C N N o o t t i i c c e e I I C C N N o o t t i i c c e e Contains FCC ID: WAP3025 Contains IC ID: 7922A-3025 This device complies with part 15 of the FCC Rules.
  • Page 75 N N o o t t e e s s 4A-V0X-SF-1C-EN...
  • Page 76 About American Standard Heating and Air Conditioning American Standard has been creating comfortable and affordable living environments for more than a century. For more information, please visit www.americanstandardair.com. The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org.

This manual is also suitable for:

Acculink 4a7v0x24a1000aAcculink 4a6v0x36a1000aAcculink 4a7v0x36b1000aAcculink 4a6v0x48a1000aAcculink 4a7v0x48a1000aAcculink 4a6v0x60a1000a ... Show all

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