Daikin FCQ18PVJU, FCQ24PVJU, FCQ30PVJU, FHQ18PVJU, FHQ24PVJU Service Manual

...

SiUS28 - 902_a

Split System Air Conditioners

SkyAir Inverter

R-410A Heat Pump 60Hz

P Series

SiUS28-902_a

i Table of Contents

SkyAir Inverter P Series

R-410A Heat Pump 60Hz

1. Introduction ............................................................................................. v

1.1 Safety Considerations for Repair ............................................................. v

1.2 Safety Considerations for Users ............................................................. vi

Part 1 General Information........................................................... 1

1. Model Names and Power Supply............................................................2

2. External Appearance ..............................................................................3

2.1 Indoor Units.............................................................................................. 3

2.2 Outdoor Units........................................................................................... 3

Part 2 Specifications .................................................................... 4

1. Specifications..........................................................................................5

1.1 FCQ ......................................................................................................... 5

1.2 FHQ ......................................................................................................... 6

1.3 FAQ.......................................................................................................... 7

Part 3 List of Electrical and Functional Parts ............................. 8

1. List of Electrical and Functional Parts .....................................................9

1.1 Outdoor Units........................................................................................... 9

1.2 Indoor Units............................................................................................ 10

Part 4 Refrigerant Circuit ........................................................... 11

1. Refrigerant Circuit .................................................................................12

1.1 RZQ18·24·30PVJU ................................................................................ 12

2. Functional Parts Layout ........................................................................14

2.1 RZQ18·30PVJU ..................................................................................... 14

Part 5 Function ........................................................................... 15

1. Operation Mode ....................................................................................16

2. Basic Control.........................................................................................17

2.1 Normal Operation................................................................................... 17

2.2 Compressor PI Control .......................................................................... 18

2.3 Electronic Expansion Valve PI Control .................................................. 19

2.4 Cooling Operation Fan Control ..............................................................20

3. Special Control......................................................................................21

3.1 Startup Control....................................................................................... 21

3.2 Oil Return Operation .............................................................................. 22

3.3 Defrosting Operation .............................................................................. 24

3.4 Pump-down Residual Operation............................................................25

3.5 Restart Standby .....................................................................................26

SiUS28-902_a

Table of Contents ii

3.6 Stopping Operation ................................................................................ 27

3.7 Pressure Equalization Prior to Startup ................................................... 28

4. Protection Control .................................................................................29

4.1 High Pressure Protection Control .......................................................... 29

4.2 Low Pressure Protection Control ........................................................... 30

4.3 Discharge Pipe Protection Control......................................................... 31

4.4 Inverter Protection Control ..................................................................... 32

5. Other Control ........................................................................................33

5.1 Heating Operation Prohibition ................................................................ 33

6. Outline of Control (Indoor Unit) .............................................................34

6.1 Drain Pump Control ............................................................................... 34

6.2 Louver Control for Preventing Ceiling Dirt ............................................. 36

6.3 Operation Range of Remote Controller Temperature Sensor................ 37

6.4 Freeze Prevention.................................................................................. 39

6.5 View of Operations of Swing Flaps ........................................................ 40

Part 6 Test Operation ................................................................. 41

1. Test Operation ......................................................................................42

1.1 Procedure and Outline ...........................................................................42

1.2 Operation when Power is Turned On..................................................... 45

2. Outdoor Unit P.C.B. Layout ..................................................................46

3. Field Setting ..........................................................................................47

3.1 Field Setting from Remote Controller..................................................... 47

3.2 Field Setting from Outdoor Unit ............................................................. 55

3.3 Detail of Setting Mode............................................................................ 60

Part 7 Troubleshooting............................................................... 65

1. Symptom-based Troubleshooting.........................................................67

2. Troubleshooting by Remote Controller .................................................70

2.1 The INSPECTION / TEST Button .......................................................... 70

2.2 Self-diagnosis by Wired Remote Controller ........................................... 71

2.3 Self-diagnosis by Wireless Remote Controller....................................... 72

2.4 Operation of the Remote Controller’s Inspection /

Test Operation Button ............................................................................ 75

2.5 Remote Controller Service Mode ........................................................... 76

2.6 Remote Controller Self-Diagnosis Function ........................................... 78

3. Troubleshooting by Indication on the Remote Controller ......................85

3.1 “A0” Indoor Unit: Error of External Protection Device ............................. 85

3.2 “A1” Indoor Unit: P.C.B. Defect ............................................................... 86

3.3 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L)........ 87

3.4 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload ................................ 89

3.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (M1S) ......................90

3.6 “A9” Indoor Unit: Malfunction of Moving Part of

Electronic Expansion Valve (Y1E) ......................................................... 92

3.7 “AF” Indoor Unit: Drain Level above Limit...............................................94

3.8 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ............95

SiUS28-902_a

iii Table of Contents

3.9 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for

Heat Exchanger .....................................................................................96

3.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes ...........97

3.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air .......... 98

3.12 “CA” Indoor Unit: Malfunction of Thermistor for Discharge Air ................99

3.13 “CJ” Indoor Unit: Malfunction of

Thermostat Sensor in Remote Controller ............................................ 100

3.14 “E1” Outdoor Unit: P.C.B. Defect..........................................................101

3.15 “E3” Outdoor Unit: Actuation of High Pressure Switch .........................102

3.16 “E4” Outdoor Unit: Actuation of Low Pressure Sensor .........................104

3.17 “E5” Inverter Compressor Motor Lock...................................................106

3.18 “E7” Malfunction of Outdoor Unit Fan Motor ......................................... 108

3.19 “E9” Outdoor Unit: Malfunction of Moving Part of

Electronic Expansion Valve (Y1E) ....................................................... 109

3.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature ................. 111

3.21 “F6” Outdoor Unit: Refrigerant Overcharged ........................................112

3.22 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air ....113

3.23 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T)....114

3.24 “J5” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for

Suction Pipe 1, 2 .................................................................................. 115

3.25 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for

Outdoor Unit Heat Exchanger.............................................................. 116

3.26 “JA” Outdoor Unit: Malfunction of High Pressure Sensor ..................... 117

3.27 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor ...................... 119

3.28 “L1” Outdoor Unit: Malfunction of P.C.B. ..............................................121

3.29 “L4” Outdoor Unit: Malfunction of

Inverter Radiating Fin Temperature Rise ............................................. 122

3.30 “L5” Outdoor Unit: Inverter Compressor Abnormal............................... 123

3.31 “L8” Outdoor Unit: Inverter Current Abnormal ......................................124

3.32 “L9” Outdoor Unit: Inverter Start up Error.............................................126

3.33 “LC” Outdoor Unit: Malfunction of Transmission between

Inverter and Control P.C.B................................................................... 127

3.34 “P4” Outdoor Unit: Malfunction of

Inverter Radiating Fin Temperature Rise Sensor................................. 128

3.35 “U0” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or

Electronic Expansion Valve Failure .....................................................129

3.36 “U2” Power Supply Insufficient or Instantaneous Failure ......................131

3.37 “U3” Check Operation not Executed ..................................................... 133

3.38 “U4” Malfunction of Transmission between

Indoor Units and Outdoor Units ...........................................................134

3.39 “

U5” Malfunction of Transmission between

Remote Controller and Indoor Unit ......................................................136

3.40 “U8” Malfunction of Transmission between

Main and Sub Remote Controllers.......................................................137

3.41 “UE” Malfunction of Transmission between

Centralized Remote Controller and Indoor Unit ...................................138

3.42 “UF” System is not Set yet .................................................................... 140

3.43 “UH” Malfunction of System,

Refrigerant System Address Undefined............................................... 141

SiUS28-902_a

Table of Contents iv

4. Troubleshooting by Indication on

the Centralized Remote Controller......................................................143

4.1 “UE” Malfunction of Transmission between

Centralized Remote Controller and Indoor Unit ...................................143

4.2 “M1” P.C.B. Defect ................................................................................ 145

4.3 “M8” Malfunction of Transmission between

Optional Controllers for Centralized Control ........................................ 146

4.4 “MA” Improper Combination of Optional Controllers for

Centralized Control .............................................................................. 147

4.5 “MC” Address Duplication, Improper Setting .........................................149

5. Troubleshooting by Indication on the Unified ON/OFF Controller.......150

5.1 Operation Lamp Blinks......................................................................... 150

5.2 Display “Under Host Computer Integrate Control” Blinks

(Repeats Single Blink) ......................................................................... 152

5.3 Display “Under Host Computer Integrate Control” Blinks

(Repeats Double Blink) ........................................................................155

Part 8 Appendix ........................................................................ 159

1. Piping Diagrams..................................................................................160

1.1 Outdoor Unit......................................................................................... 160

1.2 Indoor Unit ...........................................................................................161

2. Wiring Diagrams for Reference...........................................................162

2.1 Outdoor Unit......................................................................................... 162

2.2 Indoor Unit ...........................................................................................163

3. Thermistor Resistance / Temperature Characteristics........................166

4. Pressure Sensor .................................................................................168

Part 9 Precautions for New Refrigerant (R-410A) ................... 169

1. Precautions for New Refrigerant (R-410A) .........................................170

1.1 Outline.................................................................................................. 170

1.2 Service Tools .......................................................................................172

Safety Considerations SiUS28-902_a

v Safety Considerations

1. SAFETY CONSIDERATIONS

Read these SAFETY CONSIDERATIONS carefully before performing any repair work. Comply with these safety symbols without fail.

Meanings of DANGER, WA R NING , CAUTION, and NOTE Symbols:

DANGER .............. Indicates an imminently hazardous

situation which, if not avoided, will result in death or serious injury.

WARNING ............ Indicates a potentially hazardous

situation which, if not avoided, could result in death or serious injury.

CAUTION ............. Indicates a potentially hazardous

situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

NOTE .................. Indicates situations that may result

in equipment or property-damage accidents only.

1.1 Safety Considerations for Repair

DANGER

• If refrigerant gas leaks during repair or service, ventilate the area immediately. Refrigerant gas may produce toxic gas if it comes into contact with flames. Refrigerant gas is heavier than air and replaces oxygen. In the event of an accident, a massive leak could lead to oxygen depletion, especially in basements, and an asphyxiation hazard could occur leading to serious injury or death.

• Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug if a plug is used. Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire.

• Use parts listed in the service parts list and appropriate tools to conduct repair work. The use of inappropriate parts or tools may cause an electrical shock or fire.

• Disconnect power before disassembling the equipment for repairs. Working on the equipment that is connected to the power supply may cause an electric shock. If it is necessary to supply power to the equipment to conduct repairs or to inspect the circuits, do not touch any electrically charged sections of the equipment.

• The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit. Discharge the capacitor completely before conducting repair work. A charged capacitor may cause an electrical shock.

• If refrigerant gas is discharged during repair work, do not touch the discharged refrigerant gas. The refrigerant gas may cause frostbite.

• Use only pipes, flare nuts, tools, and other materials designed specifically for R410A refrigerant systems. Never use tools or materials designed for R22 refrigerant systems on an R410A refrigerant system. Doing so can cause a serious accident or an equipment failure.

• Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections may cause excessive heat generation, fire, or electrical shock.

WAR N ING

• Prior to disconnecting the suction or discharge pipe from the compressor at the welded section, pump-down the refrigerant gas completely in a wellventilated place first. If there is refrigerant gas or oil remaining inside the compressor, the refrigerant gas or oil can discharge when the pipe is being disconnected and it may cause an injury.

• Wear a safety helmet, gloves, and a safety belt when working at an elevated height of more than 6.5 ft (2 m). Insufficient safety measures may cause a fall resulting in injury.

• Do not mix air or gas other than the specified refrigerant R410A to the refrigerant system. If air enters the refrigerant systems, it can cause an excessive high pressure resulting in equipment damage and injury.

• When relocating the equipment, check if the new installation site has sufficient strength to withstand the weight of the equipment. If the installation site does not have sufficient strength and the equipment is not properly secured, the equipment may fall and cause injury.

• Securely fasten the outside unit terminal cover (panel). If the terminal cover/panel is not fastened properly, dust or water may enter the outside unit causing fire or electric shock.

• When relocating the system, keep the refrigerant circuit free from substances other than the specified refrigerant (R-410A) such as air. Any presence of air or other foreign substance in the refrigerant circuit can cause an abnormal pressure rise or rupture, resulting in injury.

• If refrigerant gas leaks, locate the leaking point and repair it before charging refrigerant. After charging refrigerant, check for refrigerant leaks. If the leaking point cannot be located and the repair work must be stopped, perform a pump-down and close the service valve to prevent the refrigerant gas from leaking into the room. The refrigerant gas itself is harmless, but it may generate toxic gases if it comes into contact with flames.

SiUS28-902_a Safety Considerations

Safety Considerations vi

CAUTION

• Do not repair the electrical components with wet hands. Working on the equipment with wet hands may cause an electrical shock.

• Do not clean the air conditioner by splashing water on it. Washing the unit with water may cause an electrical shock.

• Ground the unit when repairing equipment in a humid or wet place to avoid electrical shocks.

• Turn off the power when cleaning the equipment to prevent internal fans that rotate at high speed from starting suddenly as they can cause injury.

• Let the refrigerant lines cool down before performing any repair work. Working on the unit when the refrigerant lines are hot may cause burns.

• All welding and cutting operations must be done in a well-ventilated place to prevent the accumulation of toxic fumes or possibly oxygen deficiency to occur.

• Check the grounding and repair it if the equipment is not properly grounded. Improper grounding may cause an electrical shock.

• Measure the insulation resistance after the repair.

The resistance must be 1M or higher. Faulty insulation may cause an electrical shock.

NOTE

• Check the drainage of the indoor unit after finishing repair work. Faulty drainage may cause water to enter the room resulting in wet floors and furniture.

• Do not tilt the unit when removing it. The water inside the unit may spill resulting in wet floors and furniture.

• Dismantling of the unit, disposal of the refrigerant, oil, and additional parts, should be done in accordance with the relevant local, state, and national regulations.

1.2 Safety Considerations for Users

DANGER

• Never attempt to modify the equipment. Doing so can cause electrical shock, excessive heat generation, or fire.

• If the power cable and lead wires have scratches or have become deteriorated, have them replaced. Damaged cable and wires may cause an electrical shock or fire.

• Do not use a joined power cable or an extension cord, or share the same power outlet with other

electrical appliances as it may cause an electrical shock or fire.

• Use an exclusive power circuit for the equipment. Insufficient circuit amperage capacity may cause an electrical shock or fire.

WAR N ING

• Do not damage or modify the power cable. Damaged or modified power cables may cause an electrical shock or fire. Placing heavy items on the power cable or pulling the power cable may damage the cable.

• Check the unit foundation for damage on a continual basis, especially if it has been in use for a long time. If left in a damaged condition, the unit may fall and cause injury. If the installation platform or frame has corroded, have it replaced. A corroded platform or frame may cause the unit to fall resulting in injury.

• If the unit has a power cable plug and it is dirty, clean the plug before securely inserting it into a power outlet. If the plug has a loose connection, tighten it or it may cause electrical shock or fire.

CAUTION

• After replacing the battery in the remote controller, dispose of the old battery to prevent children from swallowing it. If a child swallows the battery, see a doctor immediately.

• Never remove the fan guard of the unit. A fan rotating at high speed without the fan guard is very dangerous.

• Before cleaning the unit, stop the operation of the unit by turning the power off or by pulling the power cable plug out from its receptacle. Otherwise an electrical shock or injury may result.

• Do not wipe the controller operation panel with benzene, thinner, chemical dust cloth, etc. The panel may get discolored or the coating can peel off. If it is extremely dirty, soak a cloth in a water-diluted neutral detergent, squeeze it well, and wipe the panel clean. Then wipe it with another dry cloth.

SiUS28-902_a

1 General Information

Part 1

General Information

1. Model Names and Power Supply............................................................2

2. External Appearance ..............................................................................3

2.1 Indoor Units.............................................................................................. 3

2.2 Outdoor Units........................................................................................... 3

SiUS28-902_a Model Names and Power Supply

General Information 2

1. Model Names and Power Supply

Indoor Unit Outdoor Unit Power Supply

Ceiling Mounted Cassette Type (Multi Flow)

FCQ18PVJU RZQ18PVJU

VJ : 1φ, 208~230V, 60Hz

FCQ24PVJU RZQ24PVJU

FCQ30PVJU RZQ30PVJU

Ceiling Suspended Type

FHQ18PVJU RZQ18PVJU

FHQ24PVJU RZQ24PVJU

FHQ30PVJU RZQ30PVJU

Wall Mounted Type

FAQ18PVJU RZQ18PVJU

FAQ24PVJU RZQ24PVJU

External Appearance SiUS28-902_a

3 General Information

2. External Appearance

2.1 Indoor Units

Ceiling mounted cassette type (Multi flow)

FCQ18PVJU FCQ24PVJU FCQ30PVJU

Ceiling suspended type

FHQ18PVJU FHQ24PVJU FHQ30PVJU

Wall mounted type

FAQ18PVJU FAQ24PVJU

2.2 Outdoor Units

RZQ18PVJU RZQ24PVJU RZQ30PVJU

SiUS28-902_a

Specifications 4

Part 2

Specifications

1. Specifications..........................................................................................5

1.1 FCQ ......................................................................................................... 5

1.2 FHQ ......................................................................................................... 6

1.3 FAQ.......................................................................................................... 7

Specifications SiUS28-902_a

5 Specifications

1. Specifications

1.1 FCQ

Ceiling Mounted Cassette Type (Multi flow)

Notes:

1. The above data are based on the following conditions.

2. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.

Model

Indoor unit FCQ18PVJU FCQ24PVJU FCQ30PVJU

Outdoor unit RZQ18PVJU RZQ24PVJU RZQ30PVJU

Power supply 1 phase 60Hz 208-230V 1 phase 60Hz 208-230V 1 phase 60Hz 208-230V Cooling capacity ¹ Btu/h 18,000 24,000 30,000 Heating capacity ² Btu/h 20,000 27,000 34,000

Indoor unit FCQ18PVJU FCQ24PVJU FCQ30PVJU

Dimensions H×W×D in (mm)

11–3/8 × 33–1/8 × 33–1/8’

(290 x 840 x 840)

11–3/8 × 33–1/8 × 33–1/8’

(290 x 840 x 840)

11–3/8 × 33–1/8 × 33–1/8’

(290 x 840 x 840)

Coil

Type Cross fin coil Cross fin coil Cross fin coil Rows×Stages×FPI 2 × 12 × 17 2 × 12 × 17 2 × 12 × 17 Face area ft² 5.35 5.35 5.35

Fan

Model QTS45A17M QTS45A17M QTS45A17M Type Turbo fan Turbo fan Turbo fan Motor output W 90 90 90

Airflow rate (H/L) cfm (Cooling) 790/670 (Heating) 870/670 (Cooling) 790/670 (Heating) 870/670 900/790 Air filter — — — Mass (Weight) lb (kg) 73 (33) 73 lbs (33) 73lbs (33)

Piping connections

Liquid in (mm) φ3/8 (9.5) (Flare connection) φ3/8 (9.5) (Flare connection) φ3/8 (9.5) (Flare connection)

Gas in (mm) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection)

Drain in (mm)

VP25 (External dia. 1–1/4” (32), Internal

dia. 1” (25.4)

VP25 (External dia. 1–1/4” (32), Internal

dia. 1” (25.4)

VP25 (External dia. 1–1/4” (32), Internal

dia. 1” (25.4)

Remote controller (option)

Wired BRC1D71 BRC1D71 BRC1D71 Wireless BRC7C812 BRC7C812 BRC7C812

Decoration panels (option)

Model BYC125K–W19 BYC125K–W19 BYC125K–W19

Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5)

Dimension

H×W×D in (mm)

1–5/8 × 37–3/8 × 37–3/8

(41 x 950 x 950)

1–5/8 × 37–3/8 × 37–3/8

(41 x 950 x 950)

1–5/8 × 37–3/8 × 37–3/8

(41 x 950 x 950) Air filter Resin net (with mold resistant) Resin net (with mold resistant) Resin net (with mold resistant) Weight lb (kg) 11 lbs (5) 11 lbs (5) 11 lbs (5)

Outdoor unit RZQ18PVJU RZQ24PVJU RZQ30PVJU

Color Ivory Ivory Ivory

Dimensions H×W×D in (mm)

30–5/16 × 35–7/16 × 12–5/8”

770 x 900 x 320)

30–5/16 × 35–7/16 × 12–5/8”

770 x 900 x 320)

30–5/16 × 35–7/16 × 12–5/8”

770 x 900 x 320)

Coil

Type Cross fin coil Cross fin coil Cross fin coil Rows×Stages×FPI 2 × 34 × 18 2 × 34 × 18 2 × 34 × 18 Face area ft² 7.1 7.1 7.1

Comp.

Model 2YC63HXD#ED 2YC63HXD#ED 2YC63HXD#ED Type Hermetically sealed swing type Hermetically sealed swing type Hermetically sealed swing type Motor output kW 1.7 1.7 1.7

Fan

Model P47N11F P47N11F P47N11F Type Propeller fan Propeller fan Propeller fan Motor output W 70 70 70 Airflow rate cfm 1,835 1,835 1,835

Mass (Weight) lb (kg) 150 lbs (68 kg) 150 lbs (68 kg) 150 lbs (68)

Piping connections

Liquid in (mm) φ3/8” (9.5 mm) (Flare connection) φ3/8” (9.5) (Flare connection) φ3/8” (9.5) (Flare connection) Gas in (mm) φ5/8” (15.8 mm) (Flare connection) φ5/8” (15.8) (Flare connection) φ5/8” (15.8) (Flare connection) Drain in (mm) φ1” (25.4 mm) (Hole) φ1” (25.4) (Hole) φ1” (25.4) (Hole)

Safety devices

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan motor.

Inverter overload protector.

Fusible plugs. Fuse.

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan motor.

Inverter overload protector.

Fusible plugs. Fuse.

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan motor.

Inverter overload protector.

Fusible plugs. Fuse. Capacity step % 100-0 100-0 100-0 Refrigerant control Electronic expansion valve Electronic expansion valve Electronic expansion valve

Ref. piping

Standard length ft (m) 25’ (7.5) 25’ (7.5) 25’ (7.5) Max. length ft (m) 164’ (50) 164’ (50) 164’ (50) Max. height difference ft (m) 98’ (30) 98’ (30) 98’ (30)

Refrigerant

Model R410A R410A R410A Charge (factory

charge)

Lbs (kg) 5.1 (2.3) 5.1 (2.3) 5.1 (2.3)

Ref. oil

Model Refer to the name plate of compressor. Refer to the name plate of compressor. Refer to the name plate of compressor. Charge L 0.75 0.75 0.75

Drawing Number C : 4D063924D C : 4D063924D C : 4D063924D

Cooling ∗1 Heating ∗2 Equivalent Piping Length Hz, Volts

Indoor : 80°FDB, 67°FWB Outdoor : 95°FDB

Indoor : 70°FDB Outdoor : 47°FDB, 43°FWB

25 ft (7.5 m) (Level Difference : 0) 60Hz, 230V

SiUS28-902_a Specifications

Specifications 6

1.2 FHQ

Ceiling Suspended Type

Notes:

1. The above data are based on the following conditions.

2. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.

Model

Indoor unit FHQ18PVJU FHQ24PVJU FHQ30PVJU

Outdoor unit RZQ18PVJU RZQ24PVJU RZQ30PVJU

Power supply 1 phase 60Hz 208-230V 1 phase 60Hz 208-230V 1 phase 60Hz 208-230V Cooling capacity ¹ Btu/h 18,000 24,000 30,000 Heating capacity ² Btu/h 20,000 27,000 34,000

Indoor unit FHQ18PVJU FHQ24PVJU FHQ30PVJU

Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5)

Dimensions H×W×D in (mm)

7–11/16 × 62–5/8 × 26–3/4

(195 x 1590 x 680)

7–11/16 × 62–5/8 × 26–3/4

(195 x 1590 x 680)

7–11/16 × 62–5/8 × 26–3/4

(195 x 1590 x 680)

Coil

Type Cross fin coil Cross fin coil Cross fin coil Rows×Stages×FPI 2 × 12 × 15 + 2 × 10 × 15 2 × 12 × 15 + 2 × 10 × 15 2 × 12 × 15 + 2 × 10 × 15 Face area ft² 3.66 + 2.95 3.66 + 2.95 3.66 + 2.95

Fan

Model — — — Type Sirocco fan Sirocco fan Sirocco fan Motor output W 130 130 130

Airflow rate (H/L) cfm 790/670 790/670 790/670 Air filter Resin net (With mold resistant) Resin net (With mold resistant) Resin net (With mold resistant) Mass (Weight) Lbs (kg) 90 (41) 90 (41) 90 (41)

Piping connections

Liquid in (mm) φ3/8 (9.5) (Flare Connection) φ3/8 (9.5) (Flare connection) φ3/8 (9.5) (Flare connection)

Gas in (mm) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection)

Drain in (mm)

VP20 (External dia. 1 (25.4),

Internal dia. 3/4 (19.1)

VP20 (External dia. 1” (25.4 mm),

Internal dia. 3/4” (19.1 mm)

VP20 (External dia. 1” (25.4),

Internal dia. 3/4” (19.1)

Remote controller (option)

Wired BRC1D71 BRC1D71 BRC1D71 Wireless BRC7E83 BRC7E83 BRC7E83

Outdoor unit RZQ18PVJU RZQ24PVJU RZQ30PVJU

Color Ivory Ivory Ivory

Dimensions H×W×D in (mm)

30–5/16 × 35–7/16 × 12–5/8

(770 x 900 x 320)

30–5/16 × 35–7/16 × 12–5/8

(770 x 900 x 320)

30–5/16 × 35–7/16 × 12–5/8

(770 x 900 x 320)

Coil

Type Cross fin coil Cross fin coil Cross fin coil

Rows×Stages×FPI 2 × 34 × 18 2 × 34 × 18 2 × 34 × 18

Face area ft² 7.1 7.1 7.1

Comp.

Model 2YC63HXD#ED 2YC63HXD#ED 2YC63HXD#ED

Type Hermetically sealed swing type Hermetically sealed swing type Hermetically sealed swing type

Motor output kW 1.7 1.7 1.7

Fan

Model P47N11F P47N11F P47N11F

Type Propeller fan Propeller fan Propeller fan

Motor output W 70 70 70

Airflow rate cfm 1,835 1,835 1,835 Mass (Weight) Lbs (kg) 150 (68) 150 (68) 150 (68)

Piping connections

Liquid in (mm) φ3/8 (9.5) (Flare connection) φ3/8 (9.5) (Flare connection) φ3/8 (9.5) (Flare connection)

Gas in (mm) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection)

Drain in (mm) φ1 (25.4) (Hole) φ1 (25.4) (Hole) φ1 (25.4) (Hole)

Safety devices

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan motor.

Inverter overload protector.

Fusible plugs. Fuse.

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan

motor.

Inverter overload protector.

Fusible plugs. Fuse.

High pressure switch.

Outdoor fan driver overload

protector.

Thermal protector for indoor fan

motor.

Inverter overload protector.

Fusible plugs. Fuse. Capacity step % 100-0 100-0 100-0 Refrigerant control Electronic expansion valve Electronic expansion valve Electronic expansion valve

Ref. piping

Standard length ft (m) 25 (7.5) 25 (7.5) 25 (7.5) Max. length ft (m) 164’ (50) 164’ (50) 164’ (50) Max. height difference ft (m) 98’ (30) 98’ (30) 98’ (30)

Refrigerant

Model R410A R410A R410A Charge (factory charge) Lbs (kg) 5.1 (2.3) 5.1 (2.3) 5.1 (2.3)

Ref. oil

Model Refer to the name plate of compressor.

Refer to the name plate of

compressor.

Refer to the name plate of

compressor.

Charge L 0.75 0.75 0.75

Drawing Number C : 4D063925C C : 4D063925C C : 4D063925C

Cooling ∗1 Heating ∗2 Equivalent Piping Length Hz, Volts

Indoor : 80°FDB, 67°FWB Outdoor : 95°FDB

Indoor : 70°FDB Outdoor : 47°FDB, 43°FWB

25 ft (7.5 m) (Level Difference : 0) 60Hz, 230V

Specifications SiUS28-902_a

7 Specifications

1.3 FAQ

Wall Mounted Type

Notes:

1. The above data are based on the following conditions.

2. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.

Model

Indoor unit FAQ18PVJU FAQ24PVJU

Outdoor unit RZQ18PVJU RZQ24PVJU

Power supply 1 phase 60Hz 208-230V 1 phase 60Hz 208-230V Cooling capacity ¹ Btu/h 18,000 24,000 Heating capacity ² Btu/h 20,000 26,000

Indoor unit FAQ18PVJU FAQ24PVJU

Color White (3.0Y8.5/0.5) White (3.0Y8.5/0.5) Dimensions H×W×D in (mm) 11–3/8 × 41–3/8 × 9 (290 x 1050 x 230) 11–3/8 × 41–3/8 × 9 (290 x 1050 x 230)

Coil

Type Cross fin coil Cross fin coil Rows×Stages×FPI 2 × 14 × 18 2 × 14 × 18 Face area ft² 2.29 2.29

Fan

Model QCL9686M QCL9686M Type Crossflow fan Crossflow fan Motor output W 43 43

Airflow rate (H/L) cfm 500/400 635/470 Air filter Resin net (Washable) Resin net (Washable) Mass (Weight) lb (kg) 31 (14) 31(14)

Piping connections

Liquid in (mm) φ3/8 (9.5) (Flare connection) φ3/8” (9.5) (Flare connection)

Gas in (mm) φ5/8 (15.8) (Flare connection) φ5/8” (15.8) (Flare connection)

Drain in (mm)

VP13 External dia. 11/16 (17.5)

Internal dia. 1/2 (12.7)

VP13 External dia. 11/16”(17.5)

Internal dia. 1/2 (12.7)

Remote controller (option)

Wired BRC1D71 BRC1D71 Wireless BRC7E818 BRC7E818

Outdoor unit RZQ18PVJU RZQ24PVJU

Color Ivory Ivory

Dimensions H×W×D in (mm)

30–5/16 × 35–7/16 × 12–5/8

(770 x 900 x 320)

30–5/16 × 35–7/16 × 12–5/8

(770 x 900 x 320)

Coil

Type Cross fin coil Cross fin coil

Rows×Stages×FPI 2 × 34 × 18 2 × 34 × 18

Face area ft² 7.1 7.1

Comp.

Model 2YC63HXD#ED 2YC63HXD#ED

Type Hermetically sealed swing type Hermetically sealed swing type

Motor output kW 1.7 1.7

Fan

Model P47N11F P47N11F

Type Propeller fan Propeller fan

Motor output W 70 70

Airflow rate cfm 1,835 1,835 Mass (Weight) lb (kg) 150 lbs (67) 150 lbs (67)

Piping connections

Liquid in (mm) φ3/8 (9.5) (Flare connection) φ3/8 (9.5) (Flare connection)

Gas in (mm) φ5/8 (15.8) (Flare connection) φ5/8 (15.8) (Flare connection)

Drain in (mm) φ1 (25.4) (Hole) φ1 (25.4) (Hole)

Safety devices

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan motor.

Inverter overload protector.

Fusible plugs. Fuse.

High pressure switch.

Outdoor fan driver overload protector.

Thermal protector for indoor fan motor.

Inverter overload protector.

Fusible plugs. Fuse. Capacity step % 100-0 100-0 Refrigerant control Electronic expansion valve Electronic expansion valve

Ref. piping

Standard length ft (m) 25’ (7.5) 25’ (7.5) Max. length ft (m) 164’ (50) 164’ (50) Max. height difference ft (m) 98’ (30) 98’ (30)

Refrigerant

Model R410A R410A Charge (factory charge) Lbs (kg) 5.1 (2.3) 5.1 (2.3)

Ref. oil

Model Refer to the name plate of compressor. Refer to the name plate of compressor. Charge L 0.75 0.75

Drawing Number C : 4D062151D C : 4D062151D

Cooling ∗1 Heating ∗2 Equivalent Piping Length Hz, Volts

Indoor : 80°FDB, 67°FWB Outdoor : 95°FDB

Indoor : 70°FDB Outdoor : 47°FDB, 43°FWB

25 ft (7.5 m) (Level Difference : 0) 60Hz, 230V

SiUS28-902_a

List of Electrical and Functional Parts 8

Part 3

List of Electrical and

Functional Parts

1. List of Electrical and Functional Parts .....................................................9

1.1 Outdoor Units........................................................................................... 9

1.2 Indoor Units............................................................................................ 10

List of Electrical and Functional Parts SiUS28-902_a

9 List of Electrical and Functional Parts

1. List of Electrical and Functional Parts

1.1 Outdoor Units

Item Name Symbol

Model

Remark

(P.C.B. terminal)

RZQ18

PVJU

RZQ24

PVJU

RZQ30

PVJU

Compressor Inverter

Type

M1C

2YC63HXD#ED

1.7kW

—

Output

Fan motor

Motor M1F 0.07kW — Overcurrent relay — 3.2A —

Functional parts

Electronic expansion valve

Cooling

Y1E

1400pls A1P X21A

Heating PI control Four-way valve Y1S STF-01AQ555A1 A1P X25A Solenoid valve (Hot gas) Y2S TEV-MOAQ1684Y1 A1P X26A Solenoid valve (Injection) Y3S TEV-MOAQ1685Y1 A1P X27A

Pressurerelated parts

Pressure switch (INV.) S1PH

ACB-4UB10

ON: 580+0/-22 psi OFF: 435±22 psi

A1P X32A

Fusible plug — DFP-3L 158~167°F — Pressure sensor (HP) S1NPH NSK-BD042D~212 0~602 psi A1P X504A Pressure sensor (LP) S1NPL NSK-BD017D-211 -7~247 psi A1P X503A

Thermistor

Main P.C.B.

For outdoor air R1T ST9303-4 A1P X11A For discharge R2T ST9701-4 A1P X12A 1-2Pin For suction 1 R3T ST8602A-5 A1P X12A 3-4Pin For heat exchanger R4T ST8604A-7 A1P X12A 5-6Pin For suction 2 R5T ST8604A-7 A1P X12A 7-8Pin

SiUS28-902_a List of Electrical and Functional Parts

List of Electrical and Functional Parts 10

1.2 Indoor Units

Parts Name

Symbol

Model

Remark

FCQ

18PVJU

FCQ

24PVJU

FCQ

30PVJU

Remote Controller

Wired Remote Controller

BRC1D71

Option

Wireless Remote Controller

BRC7C812

Motors

Fan Motor M1F

1φ90W 6P

Thermal Protector 266°F : OFF 176°F : ON

Capacitor, fan motor C1 5.0μF 450VAC

Drain Pump M1P

PLD-12230DM

Thermal Fuse 293°F

Swing Motor M1S MP35HCA [3P007482-1]

Thermistors

Thermistor (Suction Air)

R1T

ST8601A-1 φ4 L250

20kΩ (77°F)

Thermistor (for Heat Exchanger High Temp.)

R3T

ST8605-3 φ8 L630

20kΩ (77°F)

Thermistor (Heat Exchanger)

R2T

ST8602A-3 φ6 L630

20kΩ (77°F)

Others

Float Switch S1L FS-0211 Fuse F1U 250V 5A φ5.2

Transformer T1R TR25H25R0

Parts Name

Symbol

Model

Remark

FHQ

18PVJU

FHQ

24PVJU

FHQ

30PVJU

Remote Controller

Wired Remote Controller

BRC1D71 Option

Wireless Controller BRC7E83

Motors

Fan Motor M1F

1φ130W

Thermal protector 266°F : OFF 176°F : ON

Capacitor for Fan Motor

C1R 9.0μF-450V

Swing Motor M1S

MT8-L[3P058751-1]

AC200~240V

Thermistors

Thermistor (Suction Air)

R1T

ST8601A-1 φ4 L250

20kΩ (77°F)

Thermistor (for Heat Exchanger High Temp.)

R3T

ST8605-6 φ8 L = 1250

20kΩ (77°F)

Thermistor (Heat Exchanger)

R2T

ST8602A-6 φ6 L = 1250

20kΩ (77°F)

Others

Fuse F1U 250V 5A

Transformer T1R TR25H25R0

Parts Name Symbol

Model

Remark

FAQ

18PVJU

FAQ

24PVJU

Remote Controller

Wired Remote Controller

BRC1D71 Option

Wireless Controller BRC7E818

Motors

Fan Motor M1F

1φ43W

Thermal protector 266°F : OFF 176°F : ON

Swing Motor M1S

MSFBC20C21 [3SB40550-1]

AC200~240V

Thermistors

Thermistor (Suction Air)

R1T

ST8601-2 φ4 L400

20kΩ (77°F)

Thermistor (for Heat Exchanger High Temp.)

R3T

ST8605-2 φ8 L400

20kΩ (77°F)

Thermistor (Heat Exchanger)

R2T

ST8602-2 φ6 L400

20kΩ (77°F)

Others

Float Switch S1L 250V 3.15A

Fuse F1U OPTION

SiUS28-902_a

11 Refrigerant Circuit

Part 4

Refrigerant Circuit

1. Refrigerant Circuit .................................................................................12

1.1 RZQ18·24·30PVJU ................................................................................ 12

2. Functional Parts Layout ........................................................................14

2.1 RZQ18·30PVJU ..................................................................................... 14

SiUS28-902_a Refrigerant Circuit

Refrigerant Circuit 12

1. Refrigerant Circuit

1.1 RZQ18·24·30PVJU

No. in

refrigerant

system

diagram

Symbol Name Major Function

A M1C Inverter compressor (INV.)

Inverter compressor is operated on frequencies between 52 Hz and 177 Hz by using the inverter. 17 steps

M1F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 8-step rotation speed by using the inverter.

EY1E

Electronic expansion valve (Main: EV1)

While in heating operation, PI control is applied to keep the outlet superheated degree of air heat exchanger constant.

G Y1S Solenoid valve (Hot gas: SVP) Prevents the low pressure from transient falling.

JY2S

Solenoid valve (Receiver gas discharging: SVG)

Collects refrigerant to receiver.

M Y3S Four-way valve Switches the operation mode between cooling and heating.

N S1NPH High pressure sensor Detects high pressure.

O S1NPL Low pressure sensor Detects low pressure.

PS1PH

HP pressure switch (For INV. compressor)

Prevents the increase of high pressure when a malfunction occurs, this switch is activated at high pressure of 580 psi or more to stop the compressor operation.

S — Fusible plug

Prevents the increase of pressure when abnormal heating is caused by fire or other heat factors, the fusible part of the plug is molten at a temperature of 158 to 167°F to release the pressure into the atmosphere.

T—

Pressure regulating valve 1 (Receiver to discharge pipe)

This valve opens at a pressure of 290 to 390 psi for prevention of pressure increase, thus resulting in no damage of functional parts due to the increase of pressure in transportation or storage.

1 R1T Thermistor (Outdoor air: Ta) Detects outdoor temperature, correct discharge pipe temperature, and other functions.

2R2T

Thermistor (INV. discharge pipe: Tdi)

Detects discharge pipe temperature, make the temperature protection control of compressor, and others.

3 R3T Thermistor (Suction pipe: Ts1)

Detects suction pipe temperature, keep the suction superheated degree constant in heating operation, and other functions.

4R4T

Thermistor (Heat exchanger deicer: Tb)

Detects liquid pipe temperature of air heat exchanger, determine defrosting operation, and other functions.

5 R5T Thermistor (Suction pipe: Ts2) Calculates the internal temperature of the compressor.

Refrigerant Circuit SiUS28-902_a

13 Refrigerant Circuit





S1NPL

S1NPH

S1PH

SiUS28-902_a Functional Parts Layout

Refrigerant Circuit 14

2. Functional Parts Layout

2.1 RZQ18·30PVJU

Overview

1P241839E

SiUS28-902_a

15 Function

Part 5

Function