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Technibel GRV250R5TAA Technical Data & Service Manual

Split system air conditioners
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CAV250R5TAA / GRV250R5TAA
CAV250R5TAA / GRV250L5TAA
CAV250R5TAA / GRV250R7TAA
CAV250R5TAA / GRV250L7TAA
CAV360R5TAA / GRV360R7TAA
CAV360R5TAA / GRV360L7TAA
CAV480R5TAA / GRV480R7TAA
CAV480R5TAA / GRV480L7TAA
DSAV250R5TAA / GRV250R5TAA
DSAV250R5TAA / GRV250L5TAA
DSAV250R5TAA / GRV250R7TAA
DSAV250R5TAA / GRV250L7TAA
DSAV360R5TAA / GRV360R7TAA
DSAV360R5TAA / GRV360L7TAA
DSAV480R5TAA / GRV480R7TAA
DSAV480R5TAA / GRV480L7TAA
SPLIT SYSTEM AIR CONDITIONER
CAV360R5TAA
CAV250R5TAA
CAV480R5TAA
DSAV360R5TAA
DSAV250R5TAA
DSAV480R5TAA
TECHNICAL DATA & SERVICE MANUAL
SPAV250R5TAA / GRV250R5TAA
SPAV250R5TAA / GRV250L5TAA
SPAV250R5TAA / GRV250R7TAA
SPAV250R5TAA / GRV250L7TAA
SPAV360R5TAA / GRV360R7TAA
SPAV360R5TAA / GRV360L7TAA
SPAV480R5TAA / GRV480R7TAA
SPAV480R5TAA / GRV480L7TAA
Indoor Unit
SPAV250R5TAA
SPAV360R5TAA
SPAV480R5TAA
0.8180.151.5
Outdoor Unit
GRV250R5TAA - GRV250R7TAA
GRV250L5TAA - GRV250L7TAA
GRV360R7TAA - GRV480R7TAA
GRV360L7TAA - GRV480L7TAA
05/2002
Section
1
2
3
4
5

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Summary of Contents for Technibel GRV250R5TAA

  • Page 1 TECHNICAL DATA & SERVICE MANUAL CAV250R5TAA / GRV250R5TAA SPAV250R5TAA / GRV250R5TAA CAV250R5TAA / GRV250L5TAA SPAV250R5TAA / GRV250L5TAA CAV250R5TAA / GRV250R7TAA SPAV250R5TAA / GRV250R7TAA CAV250R5TAA / GRV250L7TAA SPAV250R5TAA / GRV250L7TAA CAV360R5TAA / GRV360R7TAA SPAV360R5TAA / GRV360R7TAA CAV360R5TAA / GRV360L7TAA SPAV360R5TAA / GRV360L7TAA...
  • Page 2 Important Please Read Before Starting When Installing …………………………………………………………………… …In a Room This air conditioning system meets strict safety and Properly insulate any tubing run inside a room to prevent operating standards. As the installer or service person, it “sweating” that can cause dripping and water damage to is an important part of your job to install or service the walls and floors.

  • Page 3: Table Of Contents

    WHO SHOULD USE THIS MANUAL This service manual is made to assist the service technician apply his knowledge and training to this model air conditioner. This manual is written both for experienced service persons and those who are new to air conditioning service. To help those with less experience or who are new to this kind of unit we have included more explanations of basic procedures in simple language than is usual in some service manuals.
  • Page 4 Overload Protection (Heating) ..............II - 9 Discharge Temperature Control (Cooling and Heating) ......II - 10 Auto. Mode for Automatic Heating/Cooling Switching ......II - 11 2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) ....II - 12 2-11 4-Way Valve, Solenoid Control ..............II - 13 (A) Normal Control Mode ................II - 13 (B) AUTO Control Mode ................II - 14 2-12 Automatic Restart after Power Interruption ..........II - 14...
  • Page 5 Introduction: Read Me First! WHAT IS IN THIS MANUAL This manual will help you understand and service the air conditioner. To help you find the information you need, we have divided it into 5 main sections. Each section is divided into chapters with charts, tables and explanations to help you find and repair problems.

  • Page 6: Specifications

    1. Specifications 1. SPECIFICATIONS Unit Specifications ................. I - 4-Way Air Discharge Semi-concealed Type ........... I - Ceiling Mounted Type ................I - 10 Concealed Duct Type ................I - 18 Concealed Duct High Static Pressure Type ..........I - 26 Major Component Specifications .............

  • Page 7: Unit Specifications

    1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV250R5TAA Outdoor Unit GRV250L5TAA POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,140 / 1,020 / 840 Moisture removal (High) Liters/h...
  • Page 8 1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV250R5TAA Outdoor Unit GRV250L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,140 / 1,020 / 840 Moisture removal (High) Liters/h...
  • Page 9 1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV360R5TAA Outdoor Unit GRV360L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h...
  • Page 10 1. Specifications Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV480R5TAA Outdoor Unit GRV480L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h...
  • Page 11 1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV250R5TAA Outdoor Unit GRV250R5TAA POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Heating Capacity BTU / h 25,000...
  • Page 12 1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV250R5TAA Outdoor Unit GRV250R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity BTU / h 25,000 29,300 Air circulation (Hi / Me / Lo) 1,140 / 1,020 / 840 Moisture removal (High)
  • Page 13 1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV360R5TAA Outdoor Unit GRV360R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity 10.6 12.5 BTU / h 36,000 42,700 Air circulation (Hi / Me / Lo)
  • Page 14 1. Specifications 1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit CAV480R5TAA Outdoor Unit GRV480R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity 12.6 15.3 BTU / h 43,000 52,200 Air circulation (Hi / Me / Lo)
  • Page 15 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV250R5TAA Outdoor Unit GRV250L5TAA POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 960 / 840 Moisture removal (High) Liters/h...
  • Page 16 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV250R5TAA Outdoor Unit GRV250L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 960 / 840 Moisture removal (High) Liters/h...
  • Page 17 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV360R5TAA Outdoor Unit GRV360L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,800 / 1,560 / 1,200 Moisture removal (High) Liters/h...
  • Page 18 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV480R5TAA Outdoor Unit GRV480L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h...
  • Page 19 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV250R5TAA Outdoor Unit GRV250R5TAA POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Heating Capacity BTU / h 25,000 29,300 Air circulation (Hi / Me / Lo)
  • Page 20 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV250R5TAA Outdoor Unit GRV250R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity BTU / h 25,000 29,300 Air circulation (Hi / Me / Lo) 1,080 / 960 / 840 Moisture removal (High) Liters/h...
  • Page 21 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV360R5TAA Outdoor Unit GRV360R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity 10.6 12.5 BTU / h 36,000 42,700 Air circulation (Hi / Me / Lo) 1,800 / 1,560 / 1,200 Moisture removal (High)
  • Page 22 1. Specifications 1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit SPAV480R5TAA Outdoor Unit GRV480R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity 12.6 15.3 BTU / h 43,000 52,200 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High)
  • Page 23 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV250R5TAA Outdoor Unit GRV250L5TAA POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 900 / 780 Moisture removal (High) Liters/h...
  • Page 24 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV250R5TAA Outdoor Unit GRV250L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 900 / 780 Moisture removal (High) Liters/h...
  • Page 25 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV360R5TAA Outdoor Unit GRV360L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,800 / 1,560 / 1,260 Moisture removal (High) Liters/h...
  • Page 26 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV480R5TAA Outdoor Unit GRV480L7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,980 / 1,800 / 1,500 Moisture removal (High) Liters/h...
  • Page 27 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV250R5TAA Outdoor Unit GRV250R5TAA POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Heating Capacity BTU / h 25,000 29,300 Air circulation (Hi / Me / Lo)
  • Page 28 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV250R5TAA Outdoor Unit GRV250R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity BTU / h 25,000 29,300 Air circulation (Hi / Me / Lo) 1,080 / 900 / 780 Moisture removal (High) Liters/h...
  • Page 29 1. Specifications 1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV360R5TAA Outdoor Unit GRV360R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity 10.6 12.5 BTU / h 36,000 42,700 Air circulation (Hi / Me / Lo) 1,800 / 1,560 / 1,260 Moisture removal (High)
  • Page 30 1. Specifications Unit Specifications Concealed Duct Type MODEL No. Indoor Unit DSAV480R5TAA Outdoor Unit GRV480R7TAA POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Heating Capacity 12.6 15.3 BTU / h 43,000 52,200 Air circulation (Hi / Me / Lo) 1,980 / 1,800 / 1,500 Moisture removal (High) Liters/h...

  • Page 31: Major Component Specifications

    1. Specifications 1-2 Major Component Specifications (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type MODEL No. CAV250R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Turbo (1 … ø 490) Fan motor Model…Nominal output SFG6X-41A5P …...
  • Page 32 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type MODEL No. CAV360R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Turbo (1 … ø 490) Fan motor Model…Nominal output SFG6X-61A3P…60 W...
  • Page 33 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type MODEL No. CAV480R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Turbo (1 … ø 490) Fan motor Model…Nominal output SFG6X-61A3P…60 W...
  • Page 34 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Ceiling Mounted Type MODEL No. SPAV250R5TAA Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Centrifugal (4 … ø 130) Fan motor Model…Nominal output SR4X-51A6P …...
  • Page 35 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Ceiling Mounted Type MODEL No. SPAV360R5TAA Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Centrifugal (4 … ø 150) Fan motor Model…Nominal output KFG4X-101C6P…100 W...
  • Page 36 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Ceiling Mounted Type MODEL No. SPAV480R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Centrifugal (4…ø150) Fan motor Model…Nominal output KFG4X-101C6P…100 W Source 220 - 230 - 240 V / 1 phase / 50 Hz...
  • Page 37 1. Specifications Major Component Specifications (A) Indoor Units : Concealed Duct Type MODEL No. DSAV250R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Centrifugal (2 … ø 190) Fan motor Model…Nominal output KFC4X-71B5P …...
  • Page 38 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Concealed Duct Type MODEL No. DSAV360R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Centrifugal (3 … ø 190) Fan motor Model…Nominal output KFC4X-141A5P…160 W...
  • Page 39 1. Specifications 1-2 Major Component Specifications (A) Indoor Units : Concealed Duct Type MODEL No. DSAV480R5TAA Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X253GH (Microprocessor) Fan (Number…diameter) Centrifugal (3 … ø 190) Fan motor Model…Nominal output KFC4X-141A5P…160 W...

  • Page 40: (B) Outdoor Units

    1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. GRV250R5TAA Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass'y CR - CR253GHL5 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..
  • Page 41 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. GRV250L5TAA Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass'y CR - CR253GHL5 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..
  • Page 42 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. GRV250R7TAA Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..
  • Page 43 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. GRV250L7TAA Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..
  • Page 44 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. GRV360R7TAA GRV480R7TAA Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Scroll (Hermetic) Model ..
  • Page 45 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. GRV360L7TAA GRV480L7TAA Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR483GHL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Scroll (Hermetic) Model ..

  • Page 46: Other Component Specifications

    1. Specifications 1-3 Other Component Specifications 4-Way Air Discharge Semi-concealed Type MODEL NO. Indoor Unit CAV250 ~480R5TAA Power Transformer ATR-II215TA Rated Primary VAC, Hz 230 V, 50 Hz Secondary 10.2 V 1.4 A 14 V 0.5 A Ω Coil resistance WHT –...
  • Page 47 1. Specifications 1-3 Other Component Specifications Ceiling Mounted Type MODEL NO. Indoor Unit SPAV250~480R5TAA Power Transformer ATR-II215TB Rated Primary VAC, Hz 230 V, 50 Hz Secondary 10.2 V 1.4 A 14 V 0.5 A Ω Coil resistance WHT –WHT : 110 BRN –...
  • Page 48 1. Specifications 1-3 Other Component Specifications Concealed Duct Type MODEL NO. Indoor Unit DSAV250~480R5TAA Power Transformer ATR-II215TB Rated Primary VAC, Hz 230 V, 50 Hz Secondary 10.2 V 1.4 A 14 V 0.5 A Ω Coil resistance WHT –WHT : 110 BRN –...
  • Page 49 1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit GRV250R5TAA - GRV250R7TAA Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 BRN –...
  • Page 50 1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit GRV250L5TAA - GRV250L7TAA Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 BRN –...
  • Page 51 1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit GRV360R7TAA -GRV480R7TAA Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 BRN –...
  • Page 52 1. Specifications 1-3 Other Component Specifications Outdoor Unit MODEL NO. Outdoor Unit GRV360L7TAA GRV480L7TAA Power Transformer ATR - I65B Rated Primary VAC, Hz 230 V, 50 Hz Secondary 14 V, 0.4 A Ω Coil resistance WHT – WHT : 300 BRN –...

  • Page 53: Dimensional Data

    1. Specifications 1-4 Dimensional Data (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type 250 Type 820 (Ceiling opening) 590 (Suspention bolt pitch) Air intake grille Air outlet Refrigerant liquid line [ø 9.52 (In case of 25 type, use the tube connector.)] Refrigerant gas line ø...
  • Page 54 1. Specifications 1-4 Dimensional Data (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type 360, 480 Type 820 (Ceiling opening) 590 (Suspention bolt pitch) Air intake grille Air outlet Refrigerant liquid line (ø9.52) Refrigerant gas line (ø19.05) Drain connection Power supply entry For discharge duct Humidifier (option) mounting hole Suspension bolt mounting...
  • Page 55 1. Specifications 1-4 Dimensional Data (A) Indoor Units : Ceiling Mounted Type 250, 360, 480Type Holes in the rear unit (View from front) Hole for wall-through piping (View from front) C (Suspension bolt hole pitch) Air outlet or more or more Front (Service space) (Service space)
  • Page 56 1. Specifications 1-4 Dimensional Data (A) Indoor Units : Concealed Duct Type 250 Type (Air outlet duct flange) (Suspension bolt pitch) Refrigerant liquid line ø9.52 (narrow tube) (Use the tube connector) Refrigerant gas line ø15.88 (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D.
  • Page 57 1. Specifications 1-4 Dimensional Data (A) Indoor Units : Concealed Duct Type 360, 480 Type (Air outlet duct flange) (Suspension bolt pitch) Refrigerant liquid line ø9.52 (narrow tube) Refrigerant gas line ø19.05 (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D.
  • Page 58 1. Specifications 1-4 Dimensional Data 7 Flange for the air intake duct (Field supply) : For Concealed Duct Type 260 (O.D.) 1766_U_I (mm) 180 5 × 180P = 245 (245 × 1) 250 type 900 120 230 6 × 230P = 1,380 120 490 (245 ×...
  • Page 59 1. Specifications 1-4 Dimensional Data (B) Outdoor Units GRV250R5TAA - GRV250R7TAA GRV250L5TAA - GRV250L7TAA Dimension : mm Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 1/4 in (6.35 mm) Refrigerant tube joint (wide tube) Flare connection 5/8 in (15.88 mm)
  • Page 60 1. Specifications 1-4 Dimensional Data (B) Outdoor Units : GRV360R7TAA - GRV360L7TAA GRV480R7TAA - GRV480L7TAA Dimension : mm Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.05 mm) Refrigerant tubing inlet Power supply inlet 1553_C_S...

  • Page 61: (B) Outdoor Units

    1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Units : GRV250L5TAA Indoor Unit : 250 Type GRV250L7TAA Compressor Accumulator Accumulator High pressure Gas line switch service valve Gas line O.D. nipple ø15.88mm (5/8") Heat exchanger Heat exchanger Distributor Strainer Electronic ref.control Distributor valve Liquid line...
  • Page 62 1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Units : GRV360L7TAA Indoor Units : 360, 480 Type GRV480L7TAA Low pressure switch Compressor Accumulator Gas line service High valve Gas line pressure O.D. nipple switch ø19.05mm (3/4") Heat exchanger Heat exchanger Distributor Strainer Electronic Distributor...
  • Page 63 1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Units : GRV250R5TAA Indoor Unit : 250 Type GRV250R7TAA Compressor Accumulator Accumulator Gas line service valve Gas line O.D. nipple ø15.88mm (5/8") High Muffler pressure switch 4-way valve Heat exchanger Heat exchanger Distributor...

  • Page 64: Operating Range

    1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Units : GRV360R7TAA Indoor Units : 360, 480 Type GRV480R7TAA Compressor Low pressure switch Accumulator Gas line service valve Gas line High pressure O.D. nipple switch ø19.05mm (3/4") Muffler 4-way valve Heat exchanger Heat exchanger Distributor Strainer...

  • Page 65: Cooling Capacity

    1. Specifications 1-7 Cooling Capacity Indoor Unit : CAV250R5TAA Outdoor Unit : GRV250R5TAA GRV250L5TAA RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1140 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 7.37 7.03 6.67 6.26 5.81 2.22 2.37 2.55...
  • Page 66 1. Specifications 1-7 Cooling Capacity Indoor Unit : CAV250R5TAA Outdoor Unit : GRV250R7TAA GRV250L7TAA RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1140 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 7.37 7.03 6.67 6.26 5.81 2.07 2.22 2.38 2.49 2.62...
  • Page 67 1. Specifications 1-7 Cooling Capacity Indoor Unit : CAV360R5TAA Outdoor Unit : GRV360R7TAA GRV360L7TAA RATING CAPACITY : 10.6 kW AIR FLOW RATE : 1920 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 10.7 10.21 9.69 9.08 8.44 2.89 3.09 3.31 3.38 3.46...
  • Page 68 1. Specifications 1-7 Cooling Capacity Indoor Unit : CAV480R5TAA Outdoor Unit : GRV480R7TAA GRV480L7TAA RATING CAPACITY : 12.6 kW AIR FLOW RATE : 1920 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 12.71 12.13 11.52 10.8 10.03 3.42 3.66 3.93 4.14 4.38...
  • Page 69 1. Specifications 1-7 Cooling Capacity Indoor Unit : SPAV250R5TAA Outdoor Unit : GRV250R5TAA GRV250L5TAA RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 7.37 7.03 6.67 6.26 5.81 2.22 2.37 2.55...
  • Page 70 1. Specifications 1-7 Cooling Capacity Indoor Unit : SPAV250R5TAA Outdoor Unit : GRV250R7TAA GRV250L7TAA RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 7.37 7.03 6.67 6.26 5.81 2.22 2.37 2.55 2.49 2.45...
  • Page 71 1. Specifications 1-7 Cooling Capacity Indoor Unit : SPAV360R5TAA Outdoor Unit : GRV360R7TAA GRV360L7TAA RATING CAPACITY : 10.6 kW AIR FLOW RATE : 1800 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 10.7 10.21 9.69 9.08 8.44 2.89 3.09 3.31 3.38 3.46...
  • Page 72 1. Specifications 1-7 Cooling Capacity Indoor Unit : SPAV480R5TAA Outdoor Unit : GRV480R7TAA GRV480L7TAA RATING CAPACITY : 12.6 kW AIR FLOW RATE : 1920 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 12.71 12.13 11.52 10.8 10.03 3.42 3.66 3.93 4.14 4.38...
  • Page 73 1. Specifications 1-7 Cooling Capacity Indoor Unit : DSAV250R5TAA Outdoor Unit : GRV250R5TAA GRV250L5TAA RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 7.37 7.03 6.67 6.26 5.81 2.35 2.51 2.69...
  • Page 74 1. Specifications 1-7 Cooling Capacity Indoor Unit : DSAV250R5TAA Outdoor Unit : GRV250R7TAA GRV250L7TAA RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 7.37 7.03 6.67 6.26 5.81 2.35 2.52 2.55 4.86 4.68...
  • Page 75 1. Specifications 1-7 Cooling Capacity Indoor Unit : DSAV360R5TAA Outdoor Unit : GRV360R7TAA GRV360L7TAA RATING CAPACITY : 10.6 kW AIR FLOW RATE : 1800 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 10.7 10.21 9.69 9.08 8.44 2.89 3.09 3.31 3.38 3.46...
  • Page 76 1. Specifications 1-7 Cooling Capacity Indoor Unit : DSAV480R5TAA Outdoor Unit : GRV480R7TAA GRV480L7TAA RATING CAPACITY : 12.6 kW AIR FLOW RATE : 1980 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 12.71 12.13 11.52 10.8 10.03 3.42 3.66 3.93 4.14 4.38...
  • Page 77 1. Specifications Heating Capacity 15˚C 20˚C 25˚C 25˚C 20˚C 15˚C –15 –10 –5 Outdoor temperature ˚C WB 0413_M_S NOTE Above characteristics are based on: 1) Tubing length is 7 meters. 2) Air flow speed is high speed. Minimum outdoor ambient temperature: –15°C WB Above characteristics indicate instantaneous capacity.
  • Page 78 1. Specifications 1-8 Noise Criterion Curves 4-Way Air Discharge Semi-concealed Type MODEL : CAV250R5TAA MODEL : CAV360R5TAA-CAV480R5TAA SOUND LEVEL : HIGH 37 dB(A), NC 30 SOUND LEVEL : HIGH 43 dB(A), NC 36 31 dB(A), NC 22 36 dB(A), NC 24 CONDITION : Center, Under the unit 1.5 m CONDITION...
  • Page 79 1. Specifications 1-8 Noise Criterion Curves Ceiling Mounted Type MODEL : SPAV250R5TAA MODEL : SPAV360R5TAA SOUND LEVEL : HIGH 39 dB(A), NC 34 SOUND LEVEL : HIGH 42 dB(A), NC 36 34 dB(A), NC 26 35 dB(A), NC 28 CONDITION : Distance 1 m, Under the unit 1 m CONDITION : Distance 1 m, Under the unit 1 m...
  • Page 80 1. Specifications 1-8 Noise Criterion Curves Concealed Duct Type MODEL : DSAV250R5TAA MODEL : DSAV360R5TAA SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18 SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21 CONDITION : Under the unit 1.5 m CONDITION...

  • Page 81: Noise Criterion Curves

    1. Specifications 1-8 Noise Criterion Curves Outdoor Units MODEL : GRV250R5TAA -GRV250R7TAA MODEL : GRV360R7TAA GRV250L5TAA - GRV250L7TAA GRV360L7TAA SOUND LEVEL : 52 dB(A), NC 44 SOUND LEVEL : 53 dB(A), NC 45 CONDITION : Distance 1m, Height 1m CONDITION...

  • Page 82: Indoor Fan Performance

    1. Specifications 1-9 Indoor Fan Performance Concealed Duct Type If external static pressure is too great (due to long Electrical component box extension of ducts, for example), the air flow volume Booster cable may drop too low at each air outlet. This problem may Booster cable be solved by increasing the fan speed using the motor...

  • Page 83: Air Throw Distance Chart

    1. Specifications 1-10 Air throw Distance Chart 4-Way Air Discharge Semi-concealed Type Model: 250Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 0276_X_I Model: 360, 480 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 0277_X_I : LOUVER ANGLE 20˚ in Cooling mode : LOUVER ANGLE 60˚ in Heating mode Condition Fan Speed : Hi Room air temp.
  • Page 84 1. Specifications 1-10 Air throw Distance Chart Ceiling Mounted Type Model: 250 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 1225_T_I Model: 360 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 1226_T_I Model: 480 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY COOLING HEATING FAN SPEED HIGH...
  • Page 85 1. Specifications 1-11 Installation Instructions Tubing Length (A) Single type Installation Example 1 Refrigerant tubing between the indoor and outdoor units should be kept as short as Tubing length (L) possible. INDOOR UNIT The length of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference between the two units.

  • Page 86: Installation Instructions

    1. Specifications 1-11 Installation Instructions Selecting the Installation Site Ceiling-Mounted Type Indoor Unit Ceiling AVOID: areas where leakage of flammable gas may be expected. Wall places where large amounts of oil mist exist. 25 cm min. 25 cm min. direct sunlight Front view NOTE NOTE...
  • Page 87 1. Specifications 1-11 Installation Instructions Selecting the Installation Site Exhaust fan Outdoor Unit Hot air Heat source AVOID: Out- heat sources, exhaust fans, etc. (Fig. 1-3) door unit damp, humid or uneven locations. 0591_C_I Fig. 1-3 choose a place as cool as possible. Table 1-2 A A A A A Dimensions choose a place that is well ventilated and outside Model...
  • Page 88 1. Specifications Air discharge 1-11 Installation Instructions Selecting the Installation Site Air Discharge Chamber for Top Discharge Be sure to install the air discharge chamber in the filed when: it is difficult to keep a space of min. 50 cm between the air discharge outlet and the obstacle.
  • Page 89 1. Specifications 1-11 Installation Instructions Selecting the Installation Site Wind Shield Important Wind shield It is recommended to install wind shields for cooling (air discharge side) operation in low outdoor temperature condition. (Fig. 1-10) General When the outdoor unit is installed in a position ex- Front posed to strong wind (like seasonal winds with low air temperature in winter), wind shield must be installed...
  • Page 90 1. Specifications 1-11 Installation Instructions Electrical Wiring General Precautions on Wiring (7) Regulations on wire diameters differ from locality to (1) Before wiring, confirm the rated voltage of the unit locality. For field wiring rules, please refer to your as shown on its nameplate, then carry out the LOCAL ELECTRICAL CODES before beginning.
  • Page 91 1. Specifications 1-11 Installation Instructions Electrical Wiring • Indoor Unit Time Delay Power Supply Terminal Base (F) Power Supply Fuse or Type Capacity Max. Wire Circuit 2.5 mm Diameter Capacity X, S, AS, T, U, SL 245 m 15 A 50 A 14 mm (AWG#6)
  • Page 92 1. Specifications 1-11 Installation Instructions Electrical Wiring Wiring System Diagrams (1) Basic wiring diagram for standard control 1 Single type (one indoor unit) 1-1. 3-phase outdoor unit Indoor Unit Outdoor Unit R.C. Address on the PCB: 0 (S2, BLK) Inter-unit (0: Factory shipped state) power wiring (Line voltage)
  • Page 93 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit :CAV250R5TAA Outdoor Unit : GRV250R5TAA GRV250L5TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 1 phase / 50 Hz 0.6 / 0.63...
  • Page 94 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : CAV250R5TAA Outdoor Unit : GRV250R7TAA GRV250L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.6 / 0.63 0.62 / 0.65...
  • Page 95 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : CAV360R5TAA Outdoor Unit : GRV360R7TAA GRV360L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.92 / 0.93 1.24 / 1.31...
  • Page 96 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : CAV480R5TAA Outdoor Unit : GRV480R7TAA GRV480L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.92 / 0.93 1.24 / 1.31...
  • Page 97 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit: SPAV250R5TAA Outdoor Unit : GRV250R5TAA GRV250L5TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 1 phase / 50 Hz 0.43 / 0.43...
  • Page 98 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : SPAV250R5TAA Outdoor Unit : GRV250R7TAA GRV250L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.43 / 0.43 0.62 / 0.65...
  • Page 99 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : SPAV360R5TAA Outdoor Unit : GRV360R7TAA GRV360L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.95 / 0.98 1.24 / 1.31...
  • Page 100 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit :SPAV480R5TAA Outdoor Unit : GRV480R7TAA GRV480L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.95 / 0.98 1.24 / 1.31 7.7 / 7.72...
  • Page 101 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit :DSAV250R5TAA Outdoor Unit : GRV250R5TAA GRV250L5TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 1 phase / 50 Hz 0.84 / 0.9...
  • Page 102 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit :DSAV250R5TAA Outdoor Unit : GRV250R7TAA GRV250L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 0.84 / 0.9 0.62 / 0.65 4.45 / 4.35...
  • Page 103 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit : DSAV360R5TAA Outdoor Unit : GRV360R7TAA GRV360L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 1.43 / 1.54 1.24 / 1.31...
  • Page 104 1. Specifications 1-11 Installation Instructions Electrical Characteristics Indoor Unit :DSAV480R5TAA Outdoor Unit : GRV480R7TAA GRV480L7TAA Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 - 240 V / 1 phase / 50 Hz 380 - 415 V / 3 phase / 50 Hz 1.48 / 1.58 1.24 / 1.31 7.7 / 7.72...
  • Page 105 2. Processes and functions 2. PROCESSES AND FUNCTIONS Room Temperature Control ..............II - 2 (A) Cooling ....................II - 2 (B) Heating ....................II - 3 Cold Draft Prevention (Heating Cycle) ............II - 4 Automatic Fan Speed (Indoor Unit) ............II - 5 (A) Cooling ....................II - 5 (B) Heating ....................II - 5 Outdoor Fan Speed Control ..............II - 6...

  • Page 106: Processes And Functions

    2. Processes and functions 2-1 Room Temperature Control The unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF. This process is controlled by the thermostat located in the indoor unit. The figures on this and the next page show how each part of the system performs as the room temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo OFF).

  • Page 107: (B) Heating

    2. Processes and functions (B) Heating THERMO. ON THERMO. ON REMOTE CONTROL THERMO. OFF THERMO. OFF SENSOR (Only for wireless THERMO. ON remote controller) SET. +1°C SETTING TEMP. SET. –1°C THERMO. OFF THERMO. OFF BODY SENSOR THERMO. ON THERMO. ON THERMO.

  • Page 108: Cold Draft Prevention (Heating Cycle)

    2. Processes and functions 2-2 Cold Draft Prevention (Heating Cycle) The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up. STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF.

  • Page 109: Automatic Fan Speed (Indoor Unit)

    2. Processes and functions 2-3 Automatic Fan Speed (Indoor Unit) By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the room temperature as the two charts shown below.

  • Page 110: Outdoor Fan Speed Control

    2. Processes and functions 2-4 Outdoor Fan Speed Control To optimize performance in air conditioner, the outdoor fan speed is selected automatically according to the outdoor temperature. Note that in both Cooling and Heating modes, the fan comes on at first at high speed (H mode) for 5 seconds.

  • Page 111: Freeze Prevention (Cooling)

    2. Processes and functions 2-5 Freeze Prevention (Cooling) Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost build up on the coil blocks cool air circulation from the indoor unit's fan. MIN.

  • Page 112: Condensing Temperature Control (Cooling)

    2. Processes and functions 2-6 Condensing Temperature Control (Cooling) Condensing temperature is controlled by the outdoor heat exchanger coil temperature as sensed by sensor C2. (°C) H or L H, L or LL ELECTRONIC CONTROL VALVE +50 step +50 step /30 sec /30 sec 1906_M_I...

  • Page 113: Overload Protection (Heating)

    2. Processes and functions 2-7 Overload Protection (Heating) This function prevents the air conditioner from overloading. (°C) INDOOR UNIT COIL TEMP. (E2) OVERLOAD PROTECTION OVERLOAD PROTECTION FUZZY CONTROL FUZZY CONTROL ELECTRONIC EXPANSION VALVE OPEN OPEN START UP OUTDOOR FM COMPENSATION H or M H or M 1565_M_S...

  • Page 114: Discharge Temperature Control (Cooling And Heating)

    2. Processes and functions 2-8 Discharge Temperature Control (Cooling and Heating) This function prevents the compressor motor from burn out by overheating. DISCHARGE GAS TEMP. (°C) OUTDOOR FAN SPEED H or M H or M COMPRESSOR ELECTRONIC EXPANSION VALVE OPEN OPEN (DISCHARGE TEMP.) TRIP IS OPERATED.
  • Page 115 2. Processes and functions 2-9 Auto. Mode for Automatic Heating/Cooling Switching COOLING SELECTION TEMP. +2.5 deg SHIFT SET TEMP. +2 deg REMOTE CONTROLLED SET TEMP. SHIFT SET TEMP. –2 deg HEATING SELECTION TEMP. –3 deg HEATING COOLING HEATING 0440_M_S Fig. 12 Chart summary and Explanations This chart shows how the Operation Mode (COOLING or HEATING) is determined by the microprocessor taking the room temperature into consideration.

  • Page 116: Defrosting Control, Outdoor Heat Exchanger Coil (Heating)

    2. Processes and functions 2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) When the outdoor temperature is low, frost may form on the outdoor heat exchanger coil. When this occurred, the defrosting system operates. The microprocessor in the outdoor unit monitors the relationship between the temperature of the outdoor heat exchanger coil and the outdoor temperature so it can defrost when necessary.

  • Page 117: 4-Way Valve, Solenoid Control

    2. Processes and functions 2-11 4-Way Valve, Solenoid Control The basic function of the 4-way valve is to direct the refrigerant in the correct direction according to the Operation Mode (COOLING or HEATING) selected. The following two charts show conditions of the controls and functions listed in the left hand column when the solenoid is ON or OFF.

  • Page 118: (B) Auto Control Mode

    2. Processes and functions (B) AUTO Control Mode POWER SOURCE OPERATION BUTTON MORE THAN 10 MINUTES MORE THAN 10 MINUTES (THERMO. OFF) (THERMO. OFF) AUTO COOL COOL MODE CONTROL HEAT HEAT HEAT THERMO. OFF THERMO. ON 3 MINUTES MORE THAN 3 MINUTES COMPRESSOR MORE THAN...

  • Page 119: Electronic Expansion Control Valve

    2. Processes and functions 2-13 Electronic Expansion Valve This valve allows very precise and smooth control of the amount of refrigerant flow in the system. Since the valve is operated by a step motor, the control circuits can open or close it in very exact amounts, so the degree of heating or cooling can be changed by just a little, or changed very quickly or slowly.

  • Page 120: Compressor Current Detection Circuit

    2. Processes and functions 2-15 Compressor Current Detection Circuit The Compressor Current Detection Circuit detects the compressor current and, depending on the current range, can stop the compressor motor so it will not be damaged by overcurrent. Overcurrent can be caused by several factors, particularly mechanical seizing of the compressor or liquid backflow.

  • Page 121: Dehumidifying Operation

    2. Processes and functions 2-16 Dehumidifying Operation Dehumidifying operation uses the cooling cycle to remove moisture from the air, but by running an indoor fan at a low speed, to dehumidify without greatly lowering room temperature. In this mode, the microprocessor automatically controls the ON-OFF operation between +2 deg.

  • Page 122: Auto-Flap Control

    2. Processes and functions 2-17 Auto-flap Control (Indoor Unit : 4-Way Air Discharge Semi-Concealed Type Ceiling-Mounted Type) Auto flap can control the air flow in 5 steps. 60° Cooling F1~F3 Heating F1~F5 1328_M_I Fig. 21 Flap position Operation mode Automatic setting Optional setting Cooling/dehumidifying F1 •...

  • Page 123: Controlled By Electronic Expansion Valve

    2. Processes and functions 2-18 Controlled by Electronic Expansion Valve The circulation volume of the refrigerant is controlled by a pulse type electronic control valve. When the power is switched ON, the opening degree of the electronic control valve is controlled between 90 and 480 steps after setting the initial step at the time when the thermostat is ON.

  • Page 124: Voltage Detection Control

    2. Processes and functions 2-19 Voltage Detection Control When the power voltage falls below 160 V (voltage between N phase and each phase) or rises above 260 V, the “P2” alarm is issued to protect the compressor and electrical components. II - 20...
  • Page 125 3. Electrical data 3. ELECTRICAL DATA Indoor Units (Electric Wiring Diagram, Schematic Diagram) ....III - 2 4-Way Air Discharge Semi-concealed Type ...........III - 2 Ceiling Mounted Type ................III - 4 Concealed Duct Type ................III - 6 Concealed Duct High Static Pressure Type ..........III - 12 Outdoor Units (Electric Wiring Diagram, Schematic Diagram) ....

  • Page 126: Electrical Data

    3. Electrical data Indoor Units 1 1 1 1 1 4-Way Air Discharge Semi-concealed Type : CAV250R5TAA - CAV360R5TAA CAV480R5TAA III - 2...
  • Page 127 3. Electrical data 3-1 Indoor Units 1 1 1 1 1 4-Way Air Discharge Semi-concealed Type : CAV250R5TAA - CAV360R5TAA CAV480R5TAA • Schematic Diagram CR-X253GH Controller 8P-R1 F1(5A) 8P-1(L) 8P-R2 RC12V 8P-R3 230V 8P-2(N) 49FI Room Thermistor Indoor Coil Indoor Coil DP.DPH Indoor Coil DC12V...
  • Page 128 3. Electrical data 3-1 Indoor Units 2 2 2 2 2 Ceiling Mounted Type : SPAV250R5TAA-SPAV360R5TAA-SPAV480R5TAA III - 4...
  • Page 129 3. Electrical data 3-1 Indoor Units 2 2 2 2 2 Ceiling Mounted Type : SPAV250R5TAA-SPAV369R5TAA-SPAV480R5TAA • Schematic Diagram CR-X253GH Controller 8P-R1 F1(5A) 8P-1(L) 8P-R2 RC12V 8P-R3 230V 8P-2(N) 49FI Room Thermistor Indoor Coil Indoor Coil Indoor Coil DC12V To Outdoor Unit Symbols Description Symbols...
  • Page 130 3. Electrical data 3-1 Indoor Units 6 6 6 6 6 Concealed Duct Type : DSAV250R5TAA-DSAV360R5TAA-DSAV480R5TAA III - 12...
  • Page 131 3. Electrical data 3-1 Indoor Units 6 6 6 6 6 Concealed Duct Type : DSAV250R5TAA-DSAV360R5TAA-DSAV480R5TAA • Schematic Diagram CR-X253GH Controller 8P-R1 8P-1(L) F1(5A) 8P-R2 RC12V 8P-R3 230V 8P-2(N) 49FI Room Thermistor Indoor Coil Indoor Coil Indoor Coil DP.DPH Discharge Air DC12V To Outdoor Unit Symbols...
  • Page 132 3. Electrical data 3-2 Outdoor Units 1 1 1 1 1 GRV250R5TAA-GRV250L5TAA III - 14...
  • Page 133 3. Electrical data 3-2 Outdoor Units 1 1 1 1 1 GRV250R5TAA-GRV250L5TAA • Schematic Diagram Terminal CR-CR253GHL5 Plate (6P) Controller 63PH 2P-1 2P-2 L1 F1(3.15A) 63PH AC 230V ∗ AC 14V ∗ 49FO Outdoor Coil C1 Outdoor Coil C2 Discharge...
  • Page 134 3. Electrical data 3-2 Outdoor Units 2 2 2 2 2 GRV250R7TAA-GRV250L7TAA III - 16...
  • Page 135 3. Electrical data 3-2 Outdoor Units 2 2 2 2 2 GRV250R7TAA-GRV250L7TAA • Schematic Diagram Terminal CR-CR483GHL8 Plate (8P) Controller 63PH 2P-1 2P-2 L1 F1(3.15A) 63PH AC 230V 49FO ∗ AC 14V ∗ Outdoor Coil C1 Outdoor Coil C2 Discharge DC12V N L3 L2 F2(3.15A)
  • Page 136 3. Electrical data 3-2 Outdoor Units 3 3 3 3 3 GRV360R7TAA-GRV360L7TAA-GRV480R7TAA-GRV480L7TAA III - 18...
  • Page 137 3. Electrical data 3-2 Outdoor Units 3 3 3 3 3 GRV360R7TAA-GRV360L7TAA-GRV480R7TAA-GRV480L7TAA • Schematic Diagram Terminal CR-CR483GHL8 Plate (8P) Controller 63PH 2P-1 2P-2 L1 F1(3.15A) 63PH AC 230V 63PL 49FO1 ∗ AC 14V ∗ Outdoor Coil C1 49FO2 Outdoor Coil C2 FMO1 FMO2 63PL...
  • Page 138 4. Service procedures 4. SERVICE PROCEDURES Troubleshooting ..................IV - 2 (1) Check before and after Troubleshooting.......... IV - 3 (2) General Troubleshooting Flow Chart: Diagnosis and Remedy ..IV - 5 (3) Meanings of alarm messages ............IV - 7 (4) LED Indication on the Outdoor Unit’s P.C.B.

  • Page 139: Troubleshooting

    4. Service procedures 4-1 Troubleshooting This section explains: What the LED codes mean What the remote control unit display screen messages mean How to use the flow charts to find and solve problems How to use the self-diagnostic tests to find parts that aren’t working right This unit is made to be trouble free, and not need much service.
  • Page 140 4. Service procedures (1)-1 Check before and after Troubleshooting (GRV250L5TAA) Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.
  • Page 141 4. Service procedures (1)-2 Check before and after Troubleshooting (GRV250L7TAA-GRV360L7TAA-GRV480L7TAA) Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.

  • Page 142: General Troubleshooting Flow Chart: Diagnosis And Remedy

    4. Service procedures (2) General Troubleshooting Flow Chart: Diagnosis and Remedy When you have found a major problem, such as refrigerant not flowing in the system or reduced air circulation, come to this section and find the box listing the problem. Connected to the box are the main causes of the problem and their remedies.
  • Page 143 4. Service procedures (B) Heating b. Heating Poor heating Is setting temp. Change the setting temp. suitable ? Is heating load Review heating load too large ? estimate. Refrigerant flow 4-way valve is Replace the valve. failure defective. Refrigerant Charge with refrigerant.

  • Page 144: Meanings Of Alarm Messages

    4. Service procedures Meanings of alarm messages If an error occurred in the air conditioner, the error condition is presented by indicating the error code in the wired remote controller display or by the combination of lamp statuses for operation, timer and heat stand-by (OFF status and flashing status). Wired remote Wireless remote Possible causes of troubles...
  • Page 145 4. Service procedures Wired remote Wireless remote Possible causes of troubles controller controller display display Operation lamp Indoor thermistor is either Indoor coil temp. (E1 = TH2) cannot be detected. and heat stand-by open or short. Indoor coil temp. (E2 = TH3) cannot be detected. lamp flash alternately.

  • Page 146: Led Indication On The Outdoor Unit's P.c.b. Ass'y

    4. Service procedures (4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to show the cause of the trouble, in addition to the Alarm message on the remote controller.

  • Page 147: Symptoms And Parts To Inspect

    4. Service procedures Symptoms and parts to inspect Symptom: LCD on the remote controller does not display and remote controller does not operate. Start Is the LED (D80) on the indoor unit PCB lit? Is there 12 V DC Is there 12 V DC Repair the between R2 and R3 between 2 and 3...
  • Page 148 4. Service procedures 2) Symptom: LCD on the remote controller displays “CHECK E01”. (Unusual communication between remote controller and indoor unit.) Start Remote controller judges itself Replace the remote controller. with self-diagnostic functions Is there an open or a contact defect in the No.
  • Page 149 4. Service procedures Symptom: LCD on the remote controller is displaying “CHECK E04”. (Unusual communication between the indoor and outdoor units.) Start Cut the breaker and remove the Is the contact good at the 2P Correct the connections. indoor/outdoor unit control lines connector for indoor serial connected to U1 and U2 of the communications on the outdoor...
  • Page 150 4. Service procedures Symptom: LCD on the remote controller is displaying “CHECK E06”. (Unusual communication between the indoor and outdoor units) Start Is there a cut line or contact Correct wiring. defect between an indoor and outdoor unit’s control line? 1903_M_I Influenced by external noise * See the section of INSTALLATION INSTRUCTION concerning with flexible...
  • Page 151 4. Service procedures Symptom: LCD on the remote controller displays “CHECK P01”. (Indoor fan protection thermostat operation warning) Start Is there 220-240 V AC between S4 and T20-3 on the indoor unit PCB? Correct the connection Is there 220-240 V AC between Is the indoor fan wire winding T20-3 and S4 after T20-1 and T20-3 protection thermostat (49FI) off?
  • Page 152 4. Service procedures 10) Symptom: LCD on the remote controller displays “CHECK P02”. (Compressor / outdoor fan protection thermostat operation warning / power supply voltage abnormality) Start Is the power supply to the outdoor Check the power breaker etc. unit normal? and repair.
  • Page 153 4. Service procedures 11) Symptoms: LCD on the remote controller displays “CHECK P03”. (Alarm for unusual discharge temp. of compressor) Start Unusual discharge gas temperature • Refrigerant shortage • Clogged refrigerant circuit • Electronic refrigerant control valve defect (indoor unit) 0343_M_I 12) Symptom: LCD on the remote controller displays “CHECK P04”.
  • Page 154 4. Service procedures 13) Symptom: LCD on the remote controller displays “CHECK P05”. (Negative phase detection operation warning) Start Is the power supply to the outdoor Check the power breaker etc. unit normal? and repair (Voltage defective phase?) Does the outdoor unit operate when No problem two of the three phases are changed? (Actuation of negative phase protector)
  • Page 155 4. Service procedures 15) Symptom: LCD on the remote controller displays “CHECK E16”. Start When the group of the units are Repair the wiring. installed, is there any mis-cross between inter unit control wiring and refrigerant tubing? Are the total capacities of indoor units Select indoor units which match with to that of outdoor units more than 107%? the outdoor capacity.
  • Page 156 4. Service procedures 17) Symptom: LCD on the remote controller displays “CHECK H01, H02, H03”. (PC compressor current detection) * Please check the related part described in the following chart after confirming the code setting (S4) of the outdoor unit’s capacity on the PCB in the outdoor unit. Start “CHECK H01”...

  • Page 157: Indoor Unit (Electric Wiring Diagram, Schematic Diagram)

    4. Service procedures Procedures When a Specific Component Does Not Work Indoor fan does not operate. Is fan motor capacitor Replace the capacitor. normal ? Is there voltage output Replace the P.C.B. Ass'y of P.C.B. Ass'y for fan in the indoor unit. motor ? •...
  • Page 158 4. Service procedures Compressor motor does not operate. Does compressor motor magnetic Replace the compressor contactor (52C) actuate ? motor magnetic contactor. Check resistance of compressor motor winding. Replace the compressor. 0461_M_I Outdoor fan does not operate. Are auxiliary relays (1Y, 2Y) Replace the relays.

  • Page 159: Service Functions Of Remote Controller

    4. Service procedures Service Functions of Remote Controller From the remote controller you can control both the operation and settings of the unit as well as perform several useful service checks. This section explains how to use the remote controller on the following items from (A) to (J). (A) Set service check switches.
  • Page 160 4. Service procedures (B) Use the test run procedure The purpose of the test run function is to let you control the operation of the unit directly without turning the unit on or off by thermostat. As indicated in the following procedure, be sure to stop test run operation when you finish the procedure, or the air conditioner may be damaged.
  • Page 161 4. Service procedures (C) Check the sensor temperature readings The air conditioner has thermo sensors which are used to control the unit. Each sensor has an address which is made up of the indoor unit address, and the sensor address. The indoor unit address is used only when several units are hooked up to one remote controller (group control).
  • Page 162 4. Service procedures Refer to the table below for the relationship between the sensor address and the location of the sensor. Relationship between the sensor address and the location of sensor Sensor Address Location of Sensor (Themistor): ˚C (CODE No.) Indoor Unit —...
  • Page 163 4. Service procedures This picture shows the service check display. UNIT No. UNIT No. 1–1 R.C. CODE Refrigerant Circuit No. CODE No. CHECK Alarm message SERVICE 0358_M_I c. A maximum of 4 alarm messages can be accessed by pressing either SET TEMP button as follows.
  • Page 164 4. Service procedures Important Never press CL (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary. To erase accessed data, press the CL button. When erasing is finished,“----” mark appears on the controller’s display. CAUTION After checking the alarm messages, be sure to press the TEST / CHK button.
  • Page 165 4. Service procedures (F) Execute the auto. address operation Auto. address operation is executed by pressing the A. ADD (S1) button of outdoor unit’s PCB usually. For your convenience it can be executed by remote controller also. a Press the TEST / CHK and ) buttons at the same time for more than 4 seconds.
  • Page 166 4. Service procedures (G) Confirm and change the indoor unit address The purpose of the above function is to let you confirm the indoor unit address after the auto. address operation, and change the indoor unit address if it is needed.
  • Page 167 4. Service procedures e Set the required new indoor unit’s No. by pressing the ) button. AIR FLOW UNIT MODE Ex: UNIT No. 3-6: currently registered indoor unit address R.C. FLAP SET TEMP. CODE TIMER SET FAN SPEED SETTING DATA Required new indoor No.8: SET DATA In this case, UNIT No.
  • Page 168 4. Service procedures (H) Change the shift temperature in heating mode If the indoor unit is installed at high location (ex. ceiling level), the thermostat tends to turn off at heating mode because of the hot air temperature around ceiling level. In order to solve the problem, the shift temp.
  • Page 169 4. Service procedures ( I ) Set the indoor unit address This function is usable if the auto. address operation is not available. Indoor unit address can be set one by one by remote controller. NOTE 1) In case of group control, branch wiring for group control should be removed temporarily.
  • Page 170 4. Service procedures d Set the No. of R. C. which you want to set with ) button. Ex. No. of R. C. will be set 2. AIR FLOW UNIT MODE UNIT No. R.C. FLAP SET TEMP. CODE TIMER SET FAN SPEED SETTING DATA...
  • Page 171 4. Service procedures i Select the code No. 14 to set group setting with the (SET TEMP) button. j Set the No. of group setting as shown below with the ) button. Nos. of group setting. AIR FLOW 0 : Standard system (except group UNIT MODE UNIT No.
  • Page 172 4. Service procedures (J) Change the period of the filter timer If the period of filter timer is not suitable (for example in case of dirty environment), the period can be shortened to half as follows: a Press the TEST / CHK button for more than 4 seconds. AIR FLOW UNIT MODE...

  • Page 173: Outdoor Unit (Electric Wiring Diagram, Schematic Diagram)

    (Fig. 26) Probe See Fig. 22. Outdoor Unit (GRV250R5TAA) Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on Clip 1 and then 2 on the 8 or 6P terminal plate.

  • Page 174: Measurement Of Insulation Resistance For Electrical Parts

    4. Service procedures Measurement of Insulation Resistance for Electrical parts Probe • Disconnect the connector of the desired electric part from terminal plate, P.C.B. Ass’y, etc. (Fig. 27) • Similary, disconnect the lead wires from Clip compressor, capacitor, etc. (Fig. 28) Copper tube or •...

  • Page 175: Checking The Protective Devices

    4. Service procedures Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 29. •...

  • Page 176: Checking The Electrical Parts

    4. Service procedures Checking the Electrical Parts Power transformer (TR1) ....Indoor unit *Measure the coil resistance. • Primary ; Measure the resistance between No.1 and No.3 (WHT lead wires) terminals of 3P (WHT) socket connected to power transformer. • Secondary 14V ;...
  • Page 177 4. Service procedures Solenoid coil of the electronic refrigerant *Measure the coil resistance. control valve (ERCV) ………… Indoor unit • Measure the resistance between No. 5 (GRY lead wire) and other terminals (another color of lead wires) of 5P (WHT) plug connected to the solenoid coil. Refer to “1-2-(A) Major component specifications”.
  • Page 178 4. Service procedures Fuse on indoor and outdoor P.C.B. Ass’y …. Both in indoor and outdoor unit *Check the continuity. • Remove the P.C.B. Ass’y from the electrical component box. Then pull out the fuse from the P.C.B. Ass’y. (Fig. 31) Fuses Fuses Indoor P.C.B.

  • Page 179: Sensor And Solenoid Layout Diagram

    4. Service procedures Sensor and Solenoid Layout Diagram Indoor Unit • CAV360R5TAA •CAV250R5TAA • CAV480R5TAA Electronic expansion valve Electronic expansion valve (E1), (RED) TH2 (E1), (RED) TH3 (E2), (BLK) (E3), (BRN) TH3 (E2), (BLK) TH4 (E3), (BRN) 1251_X_I 1250_X_I IV - 42...
  • Page 180 4. Service procedures Indoor Unit •SPAV250R5TAA TH3 (E2), (BLK) TH4 (E3), (BRN) TH2 (E1), (RED) Electronic expansion valve 1218_THS_I • SPAV360R5TAA-SPAV480R5TAA TH3 (E2), (BLK) TH2 (E1), (RED) Electronic expansion valve TH4 (E3), (BRN) 1219_THS_I IV - 43...
  • Page 181 4. Service procedures Indoor Unit •DSAV250R5TAA • DSAV360R5TAA • DSAV480R5TAA TH3 (E2), (BLK) TH3 (E2), (BLK) TH4 (E3), (BRN) TH2 (E1), (RED) TH2 (E1), (RED) TH4 (E3), (BRN) Electronic expansion valve Electronic expansion valve 1258_U_I 1257_U_I Heat exch TH5 (Discharge Air) 1264 _ C _ I SM830080 IV - 44...
  • Page 182 4. Service procedures Outdoor Units • GRV250L5TAA-GRV250L7TAA TH6, 7, 8 20S, 63PH TH8 (GRN) TH7 (C2), (RED) ( Discharge gas) TH6 (C1), (BLK) 0582_C_S 0583_C_S • GRV360L7TAA TH6, 7, 8 TH7 (C2), (RED) 63PH TH8 (GRN) ( Discharge gas) TH6 (C1), (BLK) 0585_C_S 0584_C_S IV - 45...
  • Page 183 4. Service procedures Outdoor Units • GRV480L7TAA TH6, 7, 8 TH7 (C2), (RED) 63PH TH8 (GRN) ( Discharge gas) TH6 (C1), (BLK) 0585_C_S 0586_C_S IV - 46...

  • Page 184: Thermistor Characteristic Curve

    4. Service procedures (6) Thermistor Characteristic Curve (1) Room temp. sensor : TH1 (KTEC-35) (2) Indoor heat exch. TH5 (KTEC-35) coil sensor : TH2(E1), TH3(E2), TH4(E3) Outdoor heat exch. coil sensor : TH6(C1), TH7(C2) ( PBC-41E) ( PB3M-41E) –20 –15 –10 –5 Temperature (°C)

  • Page 185: Setting

    4. Service procedures (7) P.C.B. Setting Setting of outdoor control PCB (A) Standard control (single outdoor unit) In case of single outdoor unit installation, even if in case of twin, triple or quartet type (2, 3 or 4 indoor units), no setting necessary. Keep factory shipment state (R.C.

  • Page 186: Address Setting Method

    4. Service procedures (8) R.C. Address Setting Method Outdoor unit R.C. address setting method In case of group control or central control, set the R.C. address to 1, 2, 3, ... according to the No. of outdoor units. Outdoor control PCB CN4 (2P Black) Refrigerant circuit address (factory setting = 0)

  • Page 187: Automatic Address Setting Method

    4. Service procedures (9) Automatic Address Setting Method 7 Complete the auto. address op- eration by pressing the TEST / — For group control and central control with CHK button. multiple outdoor units — NOTE Carry out automatic address setting with Required time for auto.

  • Page 188: Items To Check Prior To Test Run

    • R407 Models: GRV type S4. Capacity code S5. Model code Outdoor PCB Outdoor PCB Model No. Model No. GRV250R5TAA 250 type (1 phase) GRV250R7TAA 250 type (3 phase) GRV360R7TAA 360 type (3 phase) OFF GRV480R7TAA 480 type (3 phase) OFF OFF S5.

  • Page 189: Test Run Procedure

    4. Service procedures (12) Test Run Procedure Start Turn on RCU address SW Multiple remote of sub remote control unit control? Recheck the test items before test operation. Check the indoor and outdoor unit combination (wiring). Single type? Multiple indoor (One indoor unit and one units for one outdoor remote controller for one...

  • Page 190: Appendix

    5. Appendix 5. APPENDIX P.C.B...................... V - 2 V - 1...
  • Page 191 5. Appendix 5-1 P.C.B. Outdoor Unit Control P.C.B. : GRV250R7TAA-GRV360R7TAA-GRV480R7TAA GRV250L7TAA-GRV360L7TAA-GRV480L7TAA CN9 : CK.H CN8 CK.L CN15 (GRN) : DISCH CN7 (RED) : CHECK CN14 (RED) : C2 CN13 (BLK) : C1 (Used for Heatpump Type only) CN11 (YEL) : TEST CN1 : VCC JP11 CN10...
  • Page 192 5. Appendix 5-1 P.C.B. Outdoor Unit Control P.C.B. : GRV250R5TAA-GRV250L5TAA CN9 : CK.H CN8 CK.L CN15 (GRN) : DISCH CN7 (RED) : CHECK CN14 (RED) : C2 CN13 (BLK) : C1 (Used for Heatpump Type only) CN11 (YEL) : TEST...
  • Page 193 5. Appendix 5-1 P.C.B. Indoor Unit Control P.C.B. (CR-X253GH) CN79 (RED) : HU1 CN77 (GRN) : LM CN85 (BLU) : DPH CN74 (WHT) : RN2 CN76 (BLK) : OP1 CN73 (BLK) : RN1 CN78 (BLU) : DP CN84 (WHT) : RN3 F1 : Fuse 250V / 5A CN81 (GRY) : T20 CN80 (RED) : 26H...
  • Page 194 • The specifications, designs, and information in this brochure are subject to change without notice.

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