American Standard 4A6V8024A1000B Service Facts
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American Standard 4A6V8024A1000B Service Facts

Variable speed acculink heat pumps and air conditioners
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Service Facts
Variable Speed AccuLink™ ™
Heat Pumps and Air Conditioners
4A6V8024A1000B
4A6V8036A1000B
4A6V8037A1000B
4A6V8048A1000B
4A6V8049A1000B
4A6V8060A1000B
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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 2017
4A7V8024A1000B
4A7V8036A1000B
4A7V8037A1000B
4A7V8048A1000B
4A7V8060A1000B
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 8 8 - - S S F F - - 1 1 G G - - 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."

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Summary of Contents for American Standard 4A6V8024A1000B

  • Page 1 Service Facts Variable Speed AccuLink™ ™ Heat Pumps and Air Conditioners 4A6V8024A1000B 4A7V8024A1000B 4A6V8036A1000B 4A7V8036A1000B 4A6V8037A1000B 4A7V8037A1000B 4A6V8048A1000B 4A7V8048A1000B 4A6V8049A1000B 4A7V8060A1000B 4A6V8060A1000B N N o o t t e e : : “Graphics in this document are for representation only. Actual model may differ in appearance.”...
  • Page 2 SAFETY SECTION — OUTDOOR I I m m p p o o r r t t a a n n t t — This document contains a wiring diagram C C A A U U T T I I O O N N and service information.
  • Page 3 S S A A F F E E T T Y Y S S E E C C T T I I O O N N — — O O U U T T D D O O O O R R Approved Combinations for Variable Speed Units Important: Use caution when cleaning outdoor coil to ensure no •...
  • Page 4 S S A A F F E E T T Y Y S S E E C C T T I I O O N N — — O O U U T T D D O O O O R R Table 1.

  • Page 5: Product Specifications

    Product Specifications HEAT PUMP MODELS OUTDOOR UNIT (a) (b) 4A6V8024A1000B 4A6V8036A1000B 4A6V8037A1000B POWER CONNS. — V/PH/HZ 208/230/1/60 208/230/1/60 208/230/1/60 MIN. BRCH. CIR. AMPACITY 17.0 25.0 26.0 BR. CIR. PROT. RTG. — MAX. (AMPS) COMPRESSOR SCROLL SCROLL SCROLL NO. USED — NO. SPEEDS 1–VARIABLE...
  • 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 HEAT PUMP MODELS CONT.
  • Page 7 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 8 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 9 All American Standard split systems are AHRI rated 6. Run the system using the “ “ C C h h a a r r g g i i n n g g M M o o d d e e - - with only TXV or EEV indoor systems.

  • Page 10: Subcool Charging Correction Charts

    Subcool Charging Correction Charts Figure 1. Subcool Charging Corrections — 2.0 Ton Figure 3. Subcool Charging Corrections — 4.0 Ton Add 1° Add 1° Add 2° Add 2° Add 1° Add 1° 1° 1° 1° 100 110 120 130 140 150 100 110 120 130 140 150 TOTAL REFRIGERANT LINE LENGTH (FEET) TOTAL REFRIGERANT LINE LENGTH (FEET)

  • Page 11: Charging: Weigh-In Method

    Charging: Weigh-In Method Weigh-In Method can be used for the initial installation, or anytime a system charge is being replaced. Weigh-In Method can also be used when power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the subcooling charging method.
  • Page 12 Wiring — D157619P04 4A-V8-SF-1G-EN...
  • Page 13 Integrated Variable Speed Control (IVSC) Inputs/ Outputs A A l l s s o o R R e e f f e e r r r r e e d d t t o o a a s s “ “ T T h h e e D D r r i i v v e e ” ” F AN ALUMINUM COVER PLATE 4A-V8-SF-1G-EN...
  • Page 14 Integrated Variable Speed Control Board LED Indicators COMM STATUS SHED L L E E D D ’ ’ S S DESCRIP- INDICA- RATE TION TION RATE DESCRIPTION INDICATION 1 TIME PER STANDBY/ SLOW SECOND IDLE 1 TIME PER SLOW DEVICE COUNT DEVICE 2 TIMES PER CALL FOR...

  • Page 15: 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 speed and hold steady for a minimum dwell period to ensure proper oil return.
  • Page 16 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 direction the valve’s pilot pin will be set. Always follow The Defrost Mode will be terminated after the OD coil the red and blue color coding to ensure proper polarity.

  • Page 17: Defrost Control (Heat Pump Only)

    Defrost Control (Heat Pump only) D D e e m m a a n n d d D D e e f f r r o o s s t t C C D D A A N N a a v v i i g g a a t t i i o o n n t t o o F F o o r r c c e e d d D D e e f f r r o o s s t t The demand defrost control measures heat pump Figure 5.
  • Page 18 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 104.44 0.50 Sensor when measured across pins 1 and 10. The 107.22 0.47 110.00...
  • Page 19 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) These tables show the corresponding voltage, resistance and temperature readings for the Ambient, Temperature Sensor when measured across pins 5 &...
  • Page 20 S S E E N N S S O O R R S S Coil and Suction Temperature The Coil Temperature Sensor control has an NTC thermistor input for sensing the coil temperature. This Sensor reading is used by the defrost algorithm on heat pump units.
  • Page 21 S S E E N N S S O O R R S S Suction Line Pressure Figure 10. 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 Display Sub- Alert A/TZONE Alert Alert State action on State action on Assembly alar- Possible Cause Group 850/950 Description Code occurrence clearance Text Shutdown. Send Err Resume normal Control failure, Control Internal control CTRL FLT Err 18.04 code to thermostat 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- 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 Sub- Alert...
  • Page 35 Refrigeration Circuits for Heating and Cooling Figure 11. 2 Ton HP (024 Models) Figure 12. 3 Ton HP (036 and 37 Models) 4A-V8-SF-1G-EN...
  • Page 36 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 13.
  • Page 37 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 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 17.
  • 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 Figure 19.

  • Page 40: 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 Open contacts will disable compressor operation and closed contacts will enable compressor operation.

  • Page 41: Communication Loss

    Communication Loss 4A-V8-SF-1G-EN...
  • Page 42 Breaker Trip Procedure 4A-V8-SF-1G-EN...
  • Page 43 Start Compressor 4A-V8-SF-1G-EN...
  • Page 44 Compressor Verification: Parameters 4A-V8-SF-1G-EN...
  • Page 45 Run Drive Diagnostic Test 4A-V8-SF-1G-EN...
  • Page 46 Compressor Verification: Short 4A-V8-SF-1G-EN...
  • Page 47 Compressor Verification: Open 4A-V8-SF-1G-EN...
  • Page 48 Inverter Temperature 4A-V8-SF-1G-EN...
  • Page 49 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 ooperational problems observed in cooling mode are not caused by the outdoor EEV.

  • Page 50: Communicating Display Assembly

    Communicating Display Assembly Scan to see an overview video about the CDA Home Screen— Communicating Display Assembly Table 6. Status Menu/Home Screen • The System Status is shown continuously on the Home Screen. • The System Status will alternate with Fault Information if there is an active fault. •...
  • Page 51 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 52 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 4A-V8-SF-1G-EN...
  • Page 53 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. 4A-V8-SF-1G-EN...
  • Page 54 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. 4A-V8-SF-1G-EN...
  • Page 55 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 56 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. 4A-V8-SF-1G-EN...
  • Page 57 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 4A-V8-SF-1G-EN...
  • Page 58 TECH CONTROL — Charge/Check Charge Modes 4A-V8-SF-1G-EN...

  • Page 59: Pressure Curves

    Pressure Curves Figure 20. 4A6V8024A 4A-V8-SF-1G-EN...
  • Page 60 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 21. 4A6V8036A 4A-V8-SF-1G-EN...
  • Page 61 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 22. 4A6V8037A 4A-V8-SF-1G-EN...
  • Page 62 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. 4A6V8048A 4A-V8-SF-1G-EN...
  • Page 63 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. 4A6V8049A 4A-V8-SF-1G-EN...
  • Page 64 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. 4A6V8060A 4A-V8-SF-1G-EN...
  • 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 26. 4A7V8024A 4A-V8-SF-1G-EN...
  • 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 27. 4A7V8036A 4A-V8-SF-1G-EN...
  • 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 28. 4A7V8037A TAM8C0C36V31 Cooling with Electronic Expansion Valve INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
  • 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 29. 4A7V8048A 4A-V8-SF-1G-EN...
  • 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 30. 4A7V8060A 4A-V8-SF-1G-EN...

  • Page 70: 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 4A6V8024A Heat 69.8 52.9 52.8 57.5...
  • Page 71 S S o o u u n n d d D D a a t t a a Sound Pressure in dBA Speed Model Mode at 3’ at 5’ at 10’ at 15’ Cool Cool 4A6V8024A Heat Heat Cool Cool 4A6V8036A Heat Heat...
  • Page 72 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 73 N N o o t t e e s s 4A-V8-SF-1G-EN...
  • Page 74 N N o o t t e e s s 4A-V8-SF-1G-EN...
  • Page 75 N N o o t t e e s s 4A-V8-SF-1G-EN...
  • Page 76 Ingersoll Rand (NYSE: IR) advances the quality of life by creating comfortable, sustainable and efficient environments. Our people and our family of brands — including Club Car ® , Ingersoll Rand ® , Thermo King ® Trane ® — work together to enhance the quality and comfort of air in homes and buildings; transport and protect food and perishables;...

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