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Panasonic R410A Service Manual

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Table of Contents

TECHNICAL DATA

&

SERVICE MANUAL

4-Way Cassette
Ducted
■ R410A Models
Model No.
Type Indoor Units Type
U1
4-Way Cassette
E1
Ducted
Outdoor Units
Type
Type
Single Split
(1-phase)
PE1
Single Split
(3-phase)
8546484931000
60
71
S-60PU1R5
S-71PU1R5
S-60PE1R5
S-71PE1R5
60
71
U-60PE1R5
U-71PE1R5
Outdoor Unit
100
125
S-100PU1R5
S-125PU1R5
S-100PE1R5
S-125PE1R5
100
125
U-100PE1R5
U-125PE1R5
U-100PE1R8
U-125PE1R8
REFERENCE NO.
140
S-140PU1R5
S-140PE1R5
140
U-140PE1R5
U-140PE1R8
SM830210-00

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  Summary of Contents for Panasonic R410A

  • Page 1: Technical Data

    TECHNICAL DATA & SERVICE MANUAL Indoor Unit Outdoor Unit 4-Way Cassette Ducted ■ R410A Models Model No. Indoor Units Type Indoor Units Type 4-Way Cassette S-60PU1R5 S-71PU1R5 S-100PU1R5 S-125PU1R5 S-140PU1R5 Ducted S-60PE1R5 S-71PE1R5 S-100PE1R5 S-125PE1R5 S-140PE1R5 Outdoor Units Outdoor Units...
  • Page 2 • When performing piping work do not ELECTRICAL SHOCK CAN CAUSE mix air except for specified refrigerant SEVERE PERSONAL INJURY OR DEATH. (R410A) in refrigeration cycle. It ONLY A QUALIFIED, EXPERIENCED causes capacity down, and risk of ELECTRICIAN SHOULD ATTEMPT TO explosion and injury due to high WIRE THIS SYSTEM.
  • Page 3 • Do not leak refrigerant while piping work for an installation or re-installation, and while repairing refrigeration parts. Handle liquid refrigerant carefully as it may cause frostbite. When Servicing • Turn the power OFF at the main power box (mains) before opening the unit to check or repair electrical parts and wiring.
  • Page 4: Check Of Density Limit

    The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer.
  • Page 5: Table Of Contents

    1. SPECIFICATIONS 1-1. Unit Specifications....................1-2 4-Way Cassette Type ..........................1-2 Ducted Type ............................1-7 1-2. Dimensional Data ..................... 1-15 (A) Indoor Units ............................. 1-15 (B) Outdoor Units ..........................1-18 1-3. Refrigerant Flow Diagram ..................1-20 1-4. Operating Range ...................... 1-21 1-5.
  • Page 6 (2119) COOL /min (ft /min) O/D AIR FLOW HEAT /min (ft /min) (2119) REFRIGERANT TYPE, AMOUNT g(oz) R410A 2.00 k (70.5) (10–3/32) (39-7/32) HEIGHT: H mm (inch) (33–3/32) (37–1/32) WIDTH: W mm (inch) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 7 /min) (2119) COOL /min (ft /min) O/D AIR FLOW HEAT /min (ft /min) (2119) REFRIGERANT TYPE, AMOUNT g(oz) R410A 2.35 k (82.9) (10–3/32) (39-7/32) HEIGHT: H mm (inch) (33–3/32) (37–1/32) WIDTH: W mm (inch) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 8 (1165) COOL /min (ft /min) (3885) O/D AIR FLOW HEAT /min (ft /min) (3355) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (12–9/16) 1416 (55–3/4) WIDTH: W mm (inch) (33–3/32) (37–1/32) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 9 /min (ft /min) (4591) O/D AIR FLOW HEAT /min (ft /min) (3885) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) (12–9/16) 1416 (55–3/4) HEIGHT: H mm (inch) (33–3/32) (37–1/32) WIDTH: W mm (inch) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 10 /min) (4767) COOL /min (ft /min) O/D AIR FLOW HEAT /min (ft /min) (4238) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) (12–9/16) 1416 (55–3/4) HEIGHT: H mm (inch) (33–3/32) (37–1/32) WIDTH: W mm (inch) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 11 (777) COOL /min (ft /min) (2119) O/D AIR FLOW HEAT /min (ft /min) (2119) REFRIGERANT TYPE, AMOUNT g(oz) R410A 2.00 k (70.5) HEIGHT: H mm (inch) (11–13/32) (39–7/32) WIDTH: W mm (inch) 1100(+100) (43–5/16(+3–15/16)) (37–1/32) DEPTH: D mm (inch) (27–9/16) 340 (13–13/32)
  • Page 12 (1059) COOL /min (ft /min) (2119) O/D AIR FLOW HEAT /min (ft /min) (2119) REFRIGERANT TYPE, AMOUNT g(oz) R410A 2.35 k (82.9) HEIGHT: H mm (inch) (14–5/32) (39–7/32) WIDTH: W mm (inch) 1100(+100) (43–5/16(+3–15/16)) (37–1/32) DEPTH: D mm (inch) (27–9/16) 340 (13–13/32)
  • Page 13 (1413) COOL /min (ft /min) (3885) O/D AIR FLOW HEAT /min (ft /min) (3355) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (14–5/32) 1416 (55–3/4) WIDTH: W mm (inch) 1100(+100) (43–5/16(+3–15/16)) (37–1/32) DEPTH: D mm (inch) (27–9/16)
  • Page 14 (1766) COOL /min (ft /min) (4591) O/D AIR FLOW HEAT /min (ft /min) (3885) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (16–15/16) 1416 (55–3/4) WIDTH: W mm (inch) 1100(+100) (43–5/16(+3–15/16)) (37–1/32) DEPTH: D mm (inch) (27–9/16)
  • Page 15 (2119) COOL /min (ft /min) (4767) O/D AIR FLOW HEAT /min (ft /min) (4238) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (16–15/16) 1416 (55–3/4) WIDTH: W mm (inch) 1100(+100) (43–5/16(+3–15/16)) (37–1/32) DEPTH: D mm (inch) (27–9/16)
  • Page 16 (1165) COOL /min (ft /min) (3885) O/D AIR FLOW HEAT /min (ft /min) (3355) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (12–9/16) 1416 (55–3/4) WIDTH: W mm (inch) (33–3/32) (37–1/32) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 17 (1236) COOL /min (ft /min) (4591) O/D AIR FLOW HEAT /min (ft /min) (3885) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (12–9/16) 1416 (55–3/4) WIDTH: W mm (inch) (33–3/32) (37–1/32) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 18 (1271) COOL /min (ft /min) (4767) O/D AIR FLOW HEAT /min (ft /min) (4238) REFRIGERANT TYPE, AMOUNT g(oz) R410A 3.40 k (119.9) HEIGHT: H mm (inch) (12–9/16) 1416 (55–3/4) WIDTH: W mm (inch) (33–3/32) (37–1/32) DEPTH: D mm (inch) (33–3/32) 340 (13–13/32)
  • Page 19: Dimensional Data

    1-2. Dimensional Data (A) Indoor Units: S-60PU1R5 / 71PU1R5 860~910 unit: mm (Ceiling opening dimensions) (Suspension bolt pitch) Less than 35 Less than 35 Less than 300 View X Raise dimension of drain tube The length of the suspension bolts should be selected so that there is a gap of 30 mm or more below the lower surface of the ceiling (18 mm...
  • Page 20 1-2. Dimensional Data (A) Indoor Units: S-100PU1R5 / 125PU1R5 / 140PU1R5 860~910 unit: mm (Ceiling opening dimensions) (Suspension bolt pitch) Less than 35 Less than 35 Less than 300 View X The length of the suspension bolts should be selected so that there is a gap of 30 mm or more below the lower surface of the ceiling (18 mm or more below the lower surface of...
  • Page 21 1-2. Dimensional Data (A) Indoor Units: Ducted Type S-60PE1R5 / S-71PE1R5 / S-100PE1R5 / S-125PE1R5 / S-140PE1R5 POSITION OF SUSPENSION BOLT unit : mm S-60PE1R5 1060 1100 S-71PE1R5 S-100PE1R5 1060 1100 S-125PE1R5 S-140PE1R5 unit : mm TYPE S-60PE1R5 33.1 S-71PE1R5 35.7 S-100PE1R5 S-125PE1R5...
  • Page 22 1-2. Dimensional Data (B) Outdoor Units: U-60PE1R5 / U-71PE1R5 unit: mm Mounting hole (4-R6.5), anchor bolt: M10 Refrigerant piping (liquid pipe), flared connection (ø9.52) Refrigerant piping (gas pipe), flared connection (ø15.88) Electrical wiring port (ø13) Electrical wiring port (ø22) Electrical wiring port (ø27) Electrical wiring port (ø35) 1-18...
  • Page 23 1-2. Dimensional Data (B) Outdoor Units: U-100PE1R5 / U-125PE1R5 / U-140PE1R5 U-100PE1R8 / U-125PE1R8 / U-140PE1R8 unit: mm Mounting hole (4-R6.5), anchor bolt: M10 Refrigerant piping (liquid pipe), flared connection (ø9.52) Refrigerant piping (gas pipe), flared connection (ø15.88) Electrical wiring port (ø13) Electrical wiring port (ø22) Electrical wiring port (ø27) Electrical wiring port (ø35)
  • Page 24: Refrigerant Flow Diagram

    1-3. Refrigerant Flow Diagram Outdoor Units: U-60PE1R5 / U-71PE1R5 Indoor Unit: Accumulator Compressor Gas line service valve High pressure ø15.88 switch Muffl er Heat exchanger 4-way valve Heat exchanger Distributor Freeze-prevention coil (Attached to the heat exchanger) Electronic ref. Strainer control valve Liquid line service valve...
  • Page 25: Operating Range

    1-4. Operating Range Temperature Indoor air intake temp. Outdoor air intake temp. Maximum 32°C DB / 25°C WB 46°C DB Cooling Minimum 18°C DB / 14°C WB -15°C DB Maximum 30°C DB / − WB 24°C DB/18°C WB Heating Minimum 16°C DB / −...
  • Page 26: Capacity Correction Graph According To Temperature Condition

    1-5. Capacity Correction Graph According to Temperature Condition U-60PE1R5 (For 50 Hz) Cooling capacity ratio (maximum capacity) Heating capacity ratio (maximum capacity) Indoor air intake temp ( °C WB) Indoor air intake temp ( °C DB) 16 °CDB 20 °CDB 22°CWB 19°CWB 24 °CDB...
  • Page 27 1-5. Capacity Correction Graph According to Temperature Condition U-71PE1R5 (For 50 Hz) Cooling capacity ratio (maximum capacity) Heating capacity ratio (maximum capacity) Indoor air intake temp ( °C WB) Indoor air intake temp ( °C DB) 16 °CDB 20 °CDB 22°CWB 24 °CDB 19°CWB...
  • Page 28 1-5. Capacity Correction Graph According to Temperature Condition U-100PE1R5 (For 50 Hz) Cooling capacity ratio (maximum capacity) Heating capacity ratio (maximum capacity) Indoor air intake temp ( °C WB) Indoor air intake temp ( °C DB) 16 °CDB 20 °CDB 24 °CDB 22°CWB 19°CWB...
  • Page 29 1-5. Capacity Correction Graph According to Temperature Condition U-125PE1R5 (For 50 Hz) Cooling capacity ratio (maximum capacity) Heating capacity ratio (maximum capacity) Indoor air intake temp ( °C WB) Indoor air intake temp ( °C DB) 16 °CDB 20 °CDB 24 °CDB 22°CWB 19°CWB...
  • Page 30 1-5. Capacity Correction Graph According to Temperature Condition U-140PE1R5 (For 50 Hz) Cooling capacity ratio (maximum capacity) Heating capacity ratio (maximum capacity) Indoor air intake temp ( °C WB) Indoor air intake temp ( °C DB) 16 °CDB 20 °CDB 24 °CDB 22°CWB 19°CWB...
  • Page 31: Noise Criterion Curves

    1-6. Noise Criterion Curves (A) Indoor Units High 4 WAY Cassette Type MODEL : S-71PU1R5 MODEL : S-60PU1R5 SOUND LEVEL : High 36 dB(A) SOUND LEVEL : High 37 dB(A) 28 dB(A) 28 dB(A) CONDITION : Under the unit 1.5m CONDITION : Under the unit 1.5m SOURCE...
  • Page 32: Ducted Type

    1-6. Noise Criterion Curves (A) Indoor Units High Ducted Type : S-60PE1R5 : S-71PE1R5 MODEL MODEL SOUND LEVEL SOUND LEVEL : HIGH 43 dB(A) : HIGH 45 dB(A) 40 dB(A) 43 dB(A) CONDITION CONDITION : Under the unit 1.5m : Under the unit 1.5m SOURCE SOURCE : 230-240V , Single Phase , 50Hz...
  • Page 33 1-6. Noise Criterion Curves (B) Outdoor Units MODEL : U-60PE1R5 MODEL : U-60PE1R5 : Cooling 48 dB(A) : Heating 50 dB(A) SOUND LEVEL SOUND LEVEL CONDITION : 1 m in front at height of 1.5 m CONDITION : 1 m in front at height of 1.5 m : 230-240V, 1 phase, 50Hz : 230-240V, 1 phase, 50Hz SOURCE...
  • Page 34 1-6. Noise Criterion Curves (B) Outdoor Units MODEL : U-100PE1R5 MODEL : U-100PE1R5 : Cooling 52 dB(A) : Heating 52 dB(A) SOUND LEVEL SOUND LEVEL CONDITION : 1 m in front at height of 1.5 m CONDITION : 1 m in front at height of 1.5 m : 230-240V, 1 phase, 50Hz : 230-240V, 1 phase, 50Hz SOURCE...
  • Page 35 1-6. Noise Criterion Curves (B) Outdoor Units MODEL : U-140PE1R5 MODEL : U-140PE1R5 : Cooling 54 dB(A) : Heating 55 dB(A) SOUND LEVEL SOUND LEVEL CONDITION : 1 m in front at height of 1.5 m CONDITION : 1 m in front at height of 1.5 m : 230-240V, 1 phase, 50Hz : 230-240V, 1 phase, 50Hz SOURCE...
  • Page 36: Indoor Fan Performance

    1-7. Indoor Fan Performance S-71PE1R5 P-Q curve S-60PE1R5 P-Q curve Air Volume (m /min) Air Volume (m /min) S-100PE1R5 P-Q curve S-125PE1R5 P-Q curve 20.0 30.0 40.0 50.0 60.0 Air Volume (m /min) Air Volume (m /min) S-140PE1R5 P-Q curve 20.0 30.0 40.0...
  • Page 37: Airflow Distance Chart

    1-8. Airflow Distance Chart 4-Way Cassette Type S-60PU1R5 / 71PU1R5 Heating : Distribution of wind velocity (Strong wind : Discharge angle approx.65°) (Room temperature approx.20°C) 1.5m/s 1.0m/s 0.5m/s 0.3m/s Horizontal air flow distance (m) Heating : Distribution of temperature (Strong wind : Discharge angle approx.65°) (Room temperature approx.20°C) Horizontal air flow distance (m) Cooling : Distribution of wind velocity...
  • Page 38 S-100PU1R5 / 125PU1R5 / 140PU1R5 Heating : Distribution of wind velocity (Strong wind : Discharge angle approx.65°) (Room temperature approx.20°C) 1.5m/s 1.0m/s 0.5m/s 0.3m/s Horizontal air flow distance (m) Heating : Distribution of temperature (Strong wind : Discharge angle approx.65°) (Room temperature approx.20°C) Horizontal air flow distance (m) Cooling : Distribution of wind velocity...
  • Page 39 1-9. Intaking Fresh Air of 4 Way cassette Type Precautions Regarding External Air Intake (1) Ventilation Load Ensure that the design of the air-conditioner takes air-conditioning loads into consideration when external air intake is involved. (2) Restrictions on External Air Intake Ensure that the design conforms to the restrictions on air intake volume stipulated in accordance with the model of the indoor unit and the intake method.
  • Page 40 • U1 Type When an External Air Intake Flange (ø100) is in Use With the External Air Intake Flange Attached External Air Intake Volume and Resistance and Operation Noise Characteristics within the Unit U1 Type Duct (ø100) for Connecting the External Air Intake Flange Operation Noise (External Air Intake Only) External Air Intake Volume (m...
  • Page 41 1-10. Electrical Wiring ■ General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (2) Circuit breaker must be incorporated in the fixed wiring in accordance with the wiring regulations. The circuit breaker must be an approved 10-16 A, having a contact separation in all poles.
  • Page 42 ■ Wiring System Diagrams * 3-phase model connections Indoor unit (No. 1) Power supply Outdoor unit (3-phase) 230 – 240V ~50 Hz INV unit Ground Power supply Remote 400 − 415 V, 3 N~, 50 Hz controller Ground Ground Ground Indoor unit (No.
  • Page 43 How to connect wiring to the terminal ■ For stranded wiring (1) Cut the wire end with cutting pliers, Stranded wire Special Screw then strip the insulation to expose washer the stranded wiring about 10 mm and Ring tightly twist the wire ends. (Fig. 1-1) pressure Ring pressure terminal...
  • Page 44 1-11. Installation Instructions Outdoor Unit Tubing Length Single (A) Single type Keep refrigerant tubing between the indoor and outdoor units as short as possible. The length of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference between the 2 units.
  • Page 45 Check of limit density When installing an air conditioner in a room, it is Minimum indoor volume & fl oor area relative to the necessary to ensure that even if the refrigerant gas amount of refrigerant are roughly as given in the accidentally escapes, its density does not exceed the following table.
  • Page 46 SELECTING THE INSTALLATION SITE Outdoor Unit ACCESSORIES SUPPLIED WITH OUTDOOR UNIT The following parts are supplied as accessories with each outdoor unit. Check that all accessory parts are present before installing the outdoor unit. Part name Q’ty Figur Remarks Part name Q’ty Figur Remarks...
  • Page 47 • If there are obstacles above the unit ① For separate installation location • Only if there are obstacles at the intake • If there are obstacles on the intake and the other side (B) If there are obstacles at the discharge ①...
  • Page 48 Pattern 2 If there is an obstacle that is higher than the unit on the discharge side. (There is no limit to the height of the obstacle above the discharge.) ① For separate installation location • If the upper part is open •...
  • Page 49 The pipe may corrode with the presence of fluorine dust which will adversely affect the refrigerant piping system due to deterioration of the refrigerant oil, etc. ● This unit is specifically for R410A. Ensure to adhere to the following items and install accordingly: •...
  • Page 50 Precautions when operating the 3-way valve for piping installation ● Do not open the 3-way valve until the piping installation is completed. • It is closed during shipment. • During installation the side panel may warp if only the flare nut is loosened and tightened with a torque wrench. As a result, always be sure to secure to the hexagonal part of the 3-way valve with a spanner, or other tool.
  • Page 51 Cylinder Cylinder ● Use tools that are designed specifically for R410A, for pressure resistance and to prevent mixing impurities. ● Fill the refrigerant from the 3-way valve’s service port on the liquid-side. For filling and replacing all refrigerant (For refilling due to a leak) ●...
  • Page 52 ● Pump down operation ● Operate the pump down according to the following procedures. Procedure Notes 1. Confi rm the valve on the liquid side and the gas side is surely open. 2. Press the PUMP DOWN switch on outdoor Perform the cooling operation for fi...
  • Page 53 OUTDOOR UNIT/3-PHASE MODEL OUTDOOR UNIT/SINGLE-PHASE MODEL Circuit breaker Circuit breaker Circuit breaker Circuit breaker Switch Switch Earth Earth Control cable Control cable Earth Earth Wired remote Wired remote Indoor unit Outdoor unit Indoor unit Outdoor unit controller controller This equipment complies with EN/IEC 31000-3-12 provided that the short-circuit power Ssc is greater than or equals to 2 kVA at the interface point between the user’s supply and the public system.
  • Page 54 PRECAUTIONS REGARDING TEST RUN Check Before Test Run Content check ● Is the wire set up and connected as described in the instructions? Check for any phase Power supply cable sequence. Indoor/outdoor connection wire ● Are the wire connection’s screws loose? Earth wire ●...
  • Page 55 Outdoor main PCB CHK pin RUN pin MODE pin *MODE pin: factory setting is cooling operation mode. CHECKS AFTER INSTALLATION HAVE COMPLETED ● Check the following items after completing installation. Is there a short circuit with the intake air flow? Is the insulation secure? (Refrigerant piping) Are there any errors with the wiring? Are the terminal screws loose? Tightening torque (Unit: N•cm {kgf•cm})
  • Page 56 SELECTING THE INSTALLATION SITE (U1 Type) 4-Way Cassette Type Indoor Unit AVOID: ● areas where leakage of flammable gas may be expected. ● places where large amounts of oil mist exist. ● direct sunlight. ● locations near heat sources which may affect the performance of the unit.
  • Page 57 Table Unit: mm Length Type 60, 71 100, 125, 140 Unit: mm Refrigerant tubing joint (gas side) Drain outlet (other side) Refrigerant tubing joint (liquid side) (VP25) Suspension lug Placing the Unit Inside the Ceiling This unit is equipped with the drain pump. Check a tape measure or carpenter’s level.
  • Page 58 Installing the Drain Pipe 300 mm or less (as short as possible) Before Performing the Installation Drain Piping Indoor unit (1) Limitations of Raising the Drain Pipe Connection A : 850 mm or lower Ceiling surface B : 670 mm or lower CAUTION * Length of supplied drain pipe = 250 mm ●...
  • Page 59 Installing the Drain Pipe CAUTION ● Do not apply force to the drain port when connecting the 3) Move the hose band so that the center position of the drain pipe. Install and fix it near the indoor unit as close hose band can be placed approx.
  • Page 60 Checking the Drainage Be careful since the fan will start CAUTION when you short the pin on the Drainage check indoor control board. After wiring and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water.
  • Page 61 ■ HOW TO INSTALL THE CEILING PANEL ■ 4-Way Cassette Type (U1 Type) Accessories Ceiling panel ×1 Washer head screws ×4 Installation notes ×1 Screws ×4 M5 × 40 4 × 12 ø18 Preparation for Ceiling Panel Installation Main unit (1) Checking the unit position 1) Check that the ceiling hole is within this range: Ceiling opening...
  • Page 62 (2) Removing the air-intake grille Installing the ceiling panel 1) Remove the 2 screws on the latch of the air-intake The power must be turned ON in order to change the grille. (Reattach the air-intake grille after installation of flap angle. (Do not attempt to move the flap by hand. the ceiling panel.) Doing so may damage the flap.) 2) Slide the air-intake grille catches in the direction...
  • Page 63 (5) How to Attach the Corner & Air-Intake Grille A. Attaching the corner cover CAUTION 1) Check that the safety cord from the corner cover is fastened to the ceiling panel pin, as shown in the figure ● If the screws are not sufficiently tightened, trouble below.
  • Page 64 ■ Others 2) When setting with the Wired Remote Controller (1) Checking After Installation <Procedure> 1) Check that there are no gaps between the unit and Stop the system before performing these steps. the ceiling panel, or between the ceiling panel and the 1 Press and hold the buttons ceiling surface.
  • Page 65 ■ SELECTING THE INSTALLATION SITE (E1 TYPE) Indoor Unit AVOID: ● areas where leakage of flammable gas may be expected. ● places where large amounts of oil mist exist. ● direct sunlight. ● locations near heat sources which may affect the performance of the unit.
  • Page 66 SELECTING THE LOCATION FOR THE INDOOR UNIT Required Minimum Space for Installation and Service. Provide a check port on the piping side ceiling for repair and maintenance. ● Install the indoor unit once the following conditions are satisfied and after receiving the customer approval. 1.
  • Page 67 Suspending the Indoor Unit Suspension bolt Depending on the ceiling type: • Insert suspension bolts Nuts and washers (use for upper and lower) • Use existing ceiling supports or construct a suitable support. Suspension lug Hole-in-anchor Concrete Insert Hole-in-plug Double nuts Notch Suspension bolt (M10 or 3/8") (field supply)
  • Page 68 ● Do not install the pipe with an upward gradient from the Installing the Drain Pipe connection port. This will cause the drain water to flow (1) Prepare standard hard PVC pipe (O.D. 32 mm) for the backward and leak when the unit is not operating. drain and use the supplied hose band to prevent water Upward gradient leaks.
  • Page 69: Connection Procedure

    Connection for demand and forced stop ■ Connection procedure Be sure to always turn the power off first when setting up the wire and cable connections. Failure to do so may lead to electric shock or unit failure. Forced Stop connection for the next system The next system Outdoor unit outdoor unit...
  • Page 70 When connection to the forced stop input With the Forced Stop input, it is possible to override the air conditioning operation to force a stop if a signal is received from a fire alarm device, etc. Connect the wiring (2-wire) to points 1 and 2 on the left side of the terminal block.
  • Page 71 When connecting to the next system unit ● Forced Stop input can be transferred to the next system unit. ● When using the Forced Stop input, connect the wiring to the terminal points 1 and 2 on the right side of the lower part of the terminal block.
  • Page 72 ■ Wiring procedure Follow the wiring procedure below for terminal connection. Set the wiring and cables for the power and signal lines to the outdoor unit together, and secure each wire and cable with the tie. Secure and clamp the power and signal lines with the tie, set up close to the valve. Set up the wiring and cable for the outdoor unit piping and secure with a tie.
  • Page 73 ■ Optional Parts ■ Filter Chamber for Indoor Unit CZ-FDU2 Installation Instructions Accessories Check that the following parts are in the box when unpacking. Supplied parts Q'ty Remarks Supplied parts Q'ty Remarks Installation Fixture for Short-circuit screws (5x40) filter chamber connector Fixture for Installation...
  • Page 74 ■ Air Intake Kit for Chamber CZ-ATU2 Duct connection box Installation Instructions Accessories Check that the following parts are in the box when unpacking. Q'ty Supplied parts Remarks Duct connection box Duct connection box installation bracket Installation flange Duct flange ( o100) Instruction screw Thermal insulation...
  • Page 75 ■ Air Intake Kit for Unit CZ-BCU2 Installation Instructions Accessories Supplied parts Q'ty Supplied parts Q'ty Supplied parts Q'ty Connecting box Instructions Installation screw (4 x 10) for main unit Duct connection flange Sealing insulation "A" Sealing insulation "B" ( 100, for fresh air intake) Installation (1) Cut and remove the sheet-metal together with an insulation (styrofoam) with a nipper or a cutter...
  • Page 76 ■ Air Cut Insulation CZ-CFU2 Installation Instructions Use this part to close air flow when setting 3-way or 2-way air discharge, or connecting the duct connection flange ( 150) according to the situation of the unit installation. NOTE When using an optional high-performance filter, a filter grille or a natural evaporation type humidifier, it is impossible to shift the 3-way or 2-way air discharge or make a connection of duct connection flange ( 150).
  • Page 77 Air outlet Internal styrofoam outer carton Part to close air flow Packing Drain pan Drain pipe Cut off the packing on a slant not to be subjected to the drain wiring. Drain wiring The portion where the packing protrudes outward must Main unit be folded to the side of the lateral plate and paste it.
  • Page 78 Do not apply any other block pattern of air outlet as listed below. 3-way air discharge Capable of blocking 1 direction 2-way air discharge Capable of blocking 2 directions 3-way air discharge + connecting air outlet duct connection flange ( 150) Block one of the air outlet and connect the duct connection flange.
  • Page 79: Table Of Contents

    2. TEST RUN ■ PRECAUTIONS REGARDING TEST RUN ................ 2-2 ■ CHECKS AFTER INSTALLATION HAVE COMPLETED ........... 2-3 ■ REGARDING DELIVERY TO THE CUSTOMER ..............2-3...
  • Page 80 ■ PRECAUTIONS REGARDING TEST RUN Check Before Test Run Content check ● Is the wire set up and connected as described in the instructions? Check for any phase Power supply cable sequence. Indoor/outdoor connection wire ● Are the wire connection’s screws loose? ●...
  • Page 81 Outdoor main PCB CHK pin RUN pin MODE pin *MODE pin: factory setting is cooling operation mode. ■ CHECKS AFTER INSTALLATION HAVE COMPLETED ● Check the following items after completing installation. Is there a short circuit with the intake air flow? Is the insulation secure? (Refrigerant piping) Are there any errors with the wiring? Are the terminal screws loose? Tightening torque (Unit: N•cm {kgf•cm})
  • Page 82: Electrical Data

    3. ELECTRICAL DATA 3-1. Indoor Units (Electric Wiring Diagram) ..............3-2 4-Way Cassette Type ..........................3-2 Ducted Type ............................3-3 3-2. Outdoor Units (Electric Wiring Diagram) ..............3-5...
  • Page 83 3-1. Indoor Units 4-Way Cassette Type S-60PU1R5 / S-71PU1R5 / S-100PU1R5 / S-125PU1R5 / S-140PU1R5 Electric Wiring Diagram...
  • Page 84 3-1. Indoor Units Ducted Type S-60PE1R5 / S-71PE1R5 / S-100PE1R5 / S-125PE1R5 Electric Wiring Diagram...
  • Page 85 3-1. Indoor Units Ducted Type S-140PE1R5 Electric Wiring Diagram...
  • Page 86 3-2. Outdoor Units Electric Wiring Diagram U-60PE1R5 / U-71PE1R5...
  • Page 87 3-2. Outdoor Units Electric Wiring Diagram U-100PE1R5 / U-125PE1R5 / U-140PE1R5...
  • Page 88 3-2. Outdoor Units Electric Wiring Diagram U-100PE1R8 / U-125PE1R8 / U-140PE1R8...
  • Page 89 – MEMO –...
  • Page 90: Control Functions

    4. CONTROL FUNCTIONS 4-1. Room Temperature Control ..................4-2 4-2. Heating Standby ......................4-4 4-3. Automatic Fan Speed Control ..................4-5 4-4. Drain Pump Control ....................... 4-6 4-5. Automatic Heating/Cooling Control ................4-7 4-6. Automatic Flap Control ....................4-8 4-7. Filter Sign ........................4-8 4-8.
  • Page 91 4-1. Room Temperature Control The body sensor or remote controller sensor detects temperature in the room. The detected temperature is called the room temperature. The body sensor is the one contained in the indoor unit. Body sensor is enabled Remote controller sensor is enabled Set temp.
  • Page 92 Remote controller sensor is enabled Remote controller sensor is enabled Set temp. in remote Set temp. in remote 28℃ 28℃ 28℃ 20℃ 20℃ 20℃ controller controller Detected temp. by Detected temp. by 30.0℃ 27.5℃ 27.0℃ 17.0℃ 20.5℃ 21.0℃ sensor sensor Detected temp.
  • Page 93 4-2. Heating Standby In heating mode, the indoor fan speed decreases to prevent cold air discharge from the indoor unit. During this time, (heating standby) is displayed on the remote controller. ① This condition occurs in the following cases. ・ Thermostat OFF ・...
  • Page 94 4-3. Automatic Fan Speed Control ① The indoor fan mode is controlled as shown below during the automatic fan mode. ② The fan mode does not change for 3 minutes during cooling operation and 1 minute during heating operation once it is changed. ③...
  • Page 95 4-4. Drain Pump Control The drain pump operates in the following conditions. ① Cooling thermostat ON ② The fl oat switch worked. ③ The drain pump may often operate for a while when the cooling thermostat turns OFF or the indoor unit is stopped.
  • Page 96 4-5. Automatic Heating/Cooling Control ① The operating mode is selected according to the set temperature and room temperature when the operation is started. Room temperature > set temperature in remote controller – 1˚C Cooling mode Room temperature < set temperature in remote controller – 1˚C Heating mode ②...
  • Page 97 4-6. Automatic Flap Control The flap position can be selected from 5 positions. Operating mode Flap position Cooling/Dry F1 F2 F3 F1 F2 F3 F4 F5 Heating F1 F2 F3 F4 F5 ① The fl ap moves to the following position automatically when the indoor unit is stopped. F0 (close): Types K1, T1, U1, Y1 F5: Models other than the above ②...
  • Page 98 4-8. Fan Control during Dry Mode The fan control during dry mode is as follows. T (deg) Set temp. in remote controller Fan mode A: Fan mode set in the remote controller B: Fan mode is L during thermostat ON, LL during thermostat OFF For details on T, refer to “4-1.
  • Page 99 4-11. Parameter Heat/cool switching Correction temp. (heating) correction temp. (automatic heat/cool) Type Model Setting at time of factory Setting at time of factory shipment shipment 4-Way Cassette 4 deg 2 deg Ducted 4 deg 2 deg 4-10...
  • Page 100 4-12. Outdoor Units Control PCB 4-12-1. Single-Phase Unit CR-PCB A746894 (U-60PE1R5, U-71PE1R5) EEPROM memory IC POWER LED JP001 (IC18) (D514) SILENT (CN- SILENT) S003 LED for EEPROM S002 memory PUMP (D330) DOWN A.ADD D302 (LED1) D303 (LED2) MODE CN-OPT1 STOP CN-OPT2 TEST Inlet...
  • Page 101 4-12-1. Single-Phase Unit (continued) CR-PCB A746844 (U-100PE1R5) EEPROM memory IC POWER LED JP001 (IC18) (D514) SILENT (CN- SILENT) S003 LED for EEPROM S002 memory PUMP (D330) DOWN A.ADD D302 (LED1) D303 (LED2) MODE CN-OPT1 STOP CN-OPT2 Inlet TEST temperature Comp sensor in heat OC plug EMG plug...
  • Page 102 4-12-1. Single-Phase Unit (continued) CR-PCB A746845 (U-125PE1R5, U-140PE1R5) EEPROM memory IC POWER LED JP001 (IC18) (D514) SILENT (CN- SILENT) S003 LED for EEPROM S002 memory PUMP (D330) DOWN A.ADD D302 (LED1) D303 (LED2) MODE CN-OPT1 STOP CN-OPT2 TEST Inlet temperature Comp sensor in heat OC plug...
  • Page 103 HIC-PCB A746895 (U-60PE1R5, U-71PE1R5) 4WAY Valve (CN-20S) CN-VDC- CN-VDC+ 4-14...
  • Page 104 HIC-PCB (continued) A746846 (U-100PE1R5) 4WAY Valve (CN-20S) CN-VDC- CN-VDC+ 4-15...
  • Page 105 HIC-PCB (continued) A746847 (U-125PE1R5, U-140PE1R5) 4WAY Valve (CN-20S) CN-VDC- CN-VDC+ 4-16...
  • Page 106 4-12-2. 3-Phase Unit CR-PCB A746967 (U-100PE1R8, U-125PE1R8, U-140PE1R8) TEST JP001 POWER LED EEPROM memory IC (D514) (IC18) LED for EEPROM memory (D330) S003 S002 SILENT (CN- SILENT) PUMP DOWN A.ADD D302 (LED1) MODE D303 (LED2) STOP CN-PRY1 CN-OPT1 CN-OPT2 High-pressure Comp EMG plug OC plug...
  • Page 107 HIC-PCB A746969 (U-100PE1R8, U-125PE1R8, U-140PE1R8) 4WAY Valve (CN-20S) CN-VDC- CN-VDC+ 4-18...
  • Page 108 4-13. Functions of Outdoor Unit PCB CN-A.ADD 2P plug : Automatic address setting pin • Short-circuit this pin for 1 second or longer to automatically set the addresses at the indoor units that are connected to that outdoor unit and are within the same system.
  • Page 109 LED 1 (D302) LED (red × 2) LED 2 (D303) • LED 1 and 2 blink alternately while automatic address setting is in progress. • Display the alarm contents for alarms that are detected by the outdoor unit. Power LED LED (green): Power indicator (D330) Indicates the DC 5V power on the outdoor unit control PCB.
  • Page 110 Table 1. Setting the System Address [S002: Rotary switch (yellow), S003: 2P DIP (black)] S003 setting S002 setting (system Outdoor system address No. address switch) 1P (10s digit) 2P (20s digit) 1 refrigerant system only Link wiring 4-21...
  • Page 111 4-14. Self-Diagnostics Function Table • Causes and corrections in instances when automatic address setting cannot be started. Trouble Cause and correction The power LED on the outdoor unit control PCB does not turn ON. Check for any errors in the power wiring to the outdoor unit, and check for a missing phase.
  • Page 112 Check items Check that the indoor unit power is turned ON. Check that the inter-unit control wiring is connected correctly. (Check that there are no open circuits, short circuits, terminal plugs, incorrect wiring to the remote controller terminals, or similar problems.) Check that the remote controller wiring is connected correctly.
  • Page 113 • The outdoor unit maintenance remote controller can be used to check the alarm display. The number of times that LED 1 and 2 blink on the outdoor unit control PCB can be used to check the alarm display. (Refer to "Checking the LED 1 and 2 Alarm Display on the Outdoor Unit Control PCB.") Alarm Alarm Meaning Code...
  • Page 114: Trouble Diagnosis

    5. TROUBLE DIAGNOSIS 5-1. Contents of Remote Controller Switch Alarm Display .......... 5-2 5-2. Outdoor Unit Control Panel LED Display ..............5-4 5-3. PAC-i System Alarm Codes ..................5-5 5-4. Inspection of Parts (Outdoor Unit) ................5-58 5-5. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently ..5-59...
  • Page 115: Contents Of Remote Controller Switch Alarm Display

    5-1. Contents of Remote Controller Switch Alarm Display Contents of Alarm Display on Remote Controller (only Outdoor Unit) Wireless remote Wired controller lamp remote display controller Cause Correction display Outdoor unit failed to receive serial Check inter-unit control wiring communication signals from indoor unit Check indoor and outdoor unit control PCB Check inter-unit control wiring Outdoor unit sending failure to indoor unit...
  • Page 116 Wireless remote Wired controller lamp remote display controller Cause Correction display Check R,S,T power supply & power pressure AC power supply trouble Check outdoor unit control PCB (HIC/CR) Alternately Compressor & reactor wiring forgotten Alarm valve open Valve blockage sensor detect Input from O sensor Alternately...
  • Page 117: Outdoor Unit Control Panel Led Display

    5-2. Outdoor Unit Control Panel LED Display Contents of LED Display on Outdoor Unit Control PCB Normal operation EEPROM error (F31) (0.25/0.75) Pre-trip (insufficient gas) Pre-trip (other) (0.75/0.25) Automatic address setting Automatic address setting in progress Blinking alternately Blinking simultaneously Automatic address setting alarm (E15) (0.25/0.75) (0.25/0.75)
  • Page 118: Pac-I System Alarm Codes

    5-3. PAC-i System Alarm Codes Alarms for outdoor units Alarm Alarm Meaning Code Remote Controller Reception Error Remote Controller Transmission Error Error in Indoor Unit Receiving Signal from Remote Controller (central) Error in Indoor Unit Receiving Signal from the Outdoor Unit Error in Indoor Unit Transmitting Signal to the Outdoor Unit Outdoor Unit Failed to Receive Serial Communication Signals from Indoor Unit Outdoor Unit Sending Failure to Indoor Unit...
  • Page 119 Symptoms and Parts to Inspect Remote Alarm Eliminating controller Judgement conditions Judgement and correction contents condition of alarm alarm display Abnormal discharge Stops when temp. exceeds Recovery at restart 1. Check refrigerant cycle (gas temperature error leak). • Discharge temp. Alarm output on 5 pre-trips 2.Trouble with electronic detected at or...
  • Page 120 Check Prior to Auto Address Setting If an outdoor unit displays an alarm, conduct this process after diagnosing the problem. 1 Auto Address Is the power of the indoor unit(s) and outdoor unit(s) on? Power on Indoor/ Has the wiring of the indoor/outdoor control line been completed? outdoor Is it all connected? Connect the wiring...
  • Page 121 E01 Remote Controller Reception Error (When indoor unit(s) are connected) Error Detection Method It is judged an error if no self-addressed communication is sent to the remote controller in a 3-minute period. When a remote controller is set to sub remote controller. •...
  • Page 122 A746802 EEPROM OPTION TEST Pin CHK Pin 4-way Cassette Type Indoor Unit Control Board A746803 EEPROM OPTION TEST Pin CHK Pin Duct Type Indoor Unit Control Board...
  • Page 123 E02 Remote Controller Transmission Error Error Detection Method When the remote controller itself cannot transmit. Or when it cannot receive the signal it transmitted itself, or when they are different and judged an error. • Malfunction of the remote controller itself (transmit circuit error) Error Diagnosis 1 Remote Is the indoor unit under group control?
  • Page 124 E03 Error in Indoor Unit Receiving Signal from Remote Controller (central) (When indoor unit(s) are connected) Error Detection Method It is judged an error when there is no communication from any remote controller (collectively) in a 3-minute period or if there is no communication from the central device in a 15-minute period.
  • Page 125 A746802 EEPROM OPTION TEST Pin CHK Pin 4-way Cassette Type Indoor Unit Control Board A746803 EEPROM OPTION TEST Pin CHK Pin Duct Type Indoor Unit Control Board 5-12...
  • Page 126 E04 Error in Indoor Unit Receiving Signal from the Outdoor unit Error Detection Method When there is no communication within a 3-minute period from the outdoor unit. Or, judged an error when no reply comes from the outdoor unit. The outdoor unit is not turned on. •...
  • Page 127 • Regarding the remote controller check, refer to the Reference Materials. • For information on the procedures for replacing the nonvolatile memory (EEPROM) of the indoor unit and/or replacing the indoor unit’s control board, refer to the manual that is packaged with the indoor unit service board. Outdoor Unit Control PCB A746894 : (U-60PE1R5, U-71PE1R5) A746844 : (U-100PE1R5)
  • Page 128 E05 Error in Indoor Unit Transmitting Signal to the Outdoor Unit Error Detection Method It is judged an error when a unit itself cannot receive a signal that it has sent. Indoor unit control PC board error • • The setting of the terminal resistor select switch on the outdoor unit main PC board is set incorrectly. Error Diagnosis 1 Indoor Is the indoor/outdoor operation line connected to more than one...
  • Page 129 E06 Outdoor Unit Failed to Receive Serial Communication Signals from Indoor Unit (When indoor unit(s) are connected) Error Detection Method It is judged an error when there is no transmission (reply) from the indoor unit to the outdoor unit for a period of three minutes. •...
  • Page 130 E07 Outdoor unit sending failure to indoor unit Error Detection Method It is judged an error when a unit itself cannot receive (discrepancy) a signal within a 3-minute period that it had sent. Outdoor main PC board error • • The setting of the terminal resistor select switch on the outdoor main PC board is set incorrectly.
  • Page 131 E08 Duplicate Indoor Unit Address Settings Error Error Detection Method It is judged an error if the addresses of indoor units are duplicated. The indoor unit address settings are duplicated in the remote control detailed settings mode. • • The multiple unit DISP pin is shorted across the indoor unit whose address is Not Set. Error Diagnosis Indoor Remove the short...
  • Page 132 E09 More Than One Remote Controller Set to Main Error Error Detection Method It is judged an error when more than one remote controller in a remote control group is set as the main remote controller. Forgot to set one remote controller to sub in a 2-remote control group. •...
  • Page 133 E12 Automatic address setting start is prohibited while auto-address setting in progress. Error Detection Method It is judged an error if a command to start auto address setting comes from another controller during auto address setting. • This occurs in a system that has more than one outdoor unit and operating lines among the indoor/outdoor units (networked wiring), when an instruction to start auto address setting is given from another controller during the auto address setting process.
  • Page 134 E14 Main unit duplication in simultaneous-operation multi control (detected outdoor unit) Error Detection Method It is judged an error that the main units are duplicated in the indoor unit group. Main unit setting was made in the indoor unit group control setting of the remote control detailed settings mode. •...
  • Page 135 E15 Automatic address alarm (capacity too low) Error Detection Method Connecting indoor unit It is judged an error the total capacity of indoor units replied by communication is fewer than that of outdoor units. (This is detected even when auto address setting is not used. •...
  • Page 136 E16 Automatic address alarm (capacity too high) Error Detection Method It is judged an error the total capacity of indoor units replied by communication is more than that of outdoor units. (This is detected even when auto address setting is not used. •...
  • Page 137 E18 Faulty Communication in Group Control Wiring Error Detection Method When the main remote controller cannot communicate with a sub remote controller in the remote control group. It is judged an error if a sub remote controller in a remote control group fails to communicate with the main remote controller for a period of three minutes.
  • Page 138 E20 No indoor units connected Error Detection Method It is judged an error if an indoor unit cannot be recognized at the start of auto address setting or when the outdoor unit is turned • The address(es) of indoor unit(s) are not assigned correctly. •...
  • Page 139 F04 Compressor discharge temperature sensor (TD) trouble Error Detection Method It is judged an error based on the criteria listed below. Open circuit or Short circuit • • When compressor stopped temporally, even after 20 minutes passed, over 103°C of discharge temperature is detected. •...
  • Page 140 F06 Inlet temperature sensor (C1) in heat exchanger trouble Error Detection Method In case of open or short • Error Diagnosis 1 Sensor Is the connector properly connected to PCB? Trouble Reconnect & check Replace sensor. Is the resistor between the sockets infinity or 0Ω? 2 Control Outdoor unit control PCB failure Replace PCB with a new one.
  • Page 141 F07 Intermediate temperature (C2) in heat exchanger trouble Error Detection Method It is judged an error when open circuit or short circuit. Error Diagnosis 1 Sensor Sensor connector is connected to PC board properly. Reconnect and check Replace sensor Resistance between sockets is infinity or 0 ohm. 2 PC board Replace PC board because of outdoor control PC board failure.
  • Page 142 F08 Outdoor air temperature sensor (TO) trouble Error Detection Method It is judged an error when open circuit or short circuit. Error Diagnosis 1 Sensor Sensor connector is connected to PC board properly. Reconnect and check Replace sensor Resistance between sockets is infinity or 0 ohm. 2 PC board Replace PC board because of outdoor control PC board failure.
  • Page 143 F12 Compressor inlet suction temperature sensor (TS) trouble Error Detection Method It is judged an error when open circuit or short circuit. Error Diagnosis 1 Sensor Sensor connector is connected to PC board properly. Reconnect and check Replace sensor Resistance between sockets is infinity or 0 ohm. 2 Outdoor control Replace PC board because of outdoor control PC board failure.
  • Page 144 F31 Outdoor unit nonvolatile memory (EEPROM) trouble Error Detection Method It is judged an error based on the criteria listed below. When power initially turned ON for the first time, nonvolatile memory (EEPROM) is not installed. • • Read values after writing onto nonvolatile memory (EEPROM) is inconsisntent. Error Diagnosis 1 PC board Does EEPROM exist on the control PC board?
  • Page 145 H01 Primary (input) overcurrent detected Error Detection Method • Primary current effective value detected overcurrent (trip current value). Trip current value hp = horse power Trip current value hp = horse power Single-phase model 2.5 hp 3 hp 4 hp 5 hp 6 hp 3-phase model...
  • Page 146 H02 PAM trouble (Single-phase only) Error Detection Method • Error is detected by over-voltage and overcurrent of DC side. Error Diagnosis Check power supply 1 Power Not satisfied with + 10% rated supply voltage supply* Check power supply Extreme voltage fluctuations Check power supply Extreme distortion of voltage waveform Correct connection...
  • Page 147 H03 Primary current CT sensor (current sensor) failure Error Detection Method It is judged an error based on the criteria listed below. • If 18A or greater is detected when the compressor is stopped (alarm triggered even if the connector is unplugged). •...
  • Page 148 H05 Sensor failure, Compressor discharge temperature sensor (TD) disconnected Error Detection Method • (In case of outdoor temperature over 5°C) For 10 minutes since started, variation of discharge temperature is always detected within 2°C comparing with the temperature just before starting. •...
  • Page 149 H31 HIC trouble Error Detection Method It is judged an error if the computer detects an error signal from the HIC. An error signal is issued by the HIC if abnormal heat occurs inside the HIC or if there is an overcurrent. However, it is judged an error in the same way if the signal line from the HIC is not connected properly or opened.
  • Page 150 Tester terminals HIC+ HIC- HIC- HIC+ Resistance value (ohm) 1 k to 10 k 1 k to 10 k 1 k to 10 k 5 k to 20 k 20 k to 20 k to 20 k to 20 k to Tester terminals HIC+ HIC-...
  • Page 151 Outdoor Unit Control HIC PCB A746895 : (U-60PE1R5, U-71PE1R5) A746846 : (U-100PE1R5) (for single-phase outdoor unit HIC PCB) (for single-phase outdoor unit HIC PCB) A746847 : (U-125PE1R5, U-140PE1R5) A746967 : (U-100PE1R8, U-125PE1R8, U-140PE1R8) (for single-phase outdoor unit HIC PCB) (for 3-phase outdoor unit PCB) Outdoor Unit Control PCB A746967 : (U-100PE1R8, U-125PE1R8, U-140PE1R8) (for 3-phase outdoor unit PCB)
  • Page 152 L04 Outdoor unit address duplication Error Detection Method It is judged an error when the identical self-address communication on the indoor and outdoor wirings is received over 5 times within 3 minutes. Error Diagnosis 1 System Are other outdoor units using a duplicate setting? address Installation When units are networked, first set the system address for each outdoor unit in the order...
  • Page 153 L10 Outdoor unit capacity not set Error Detection Method It is judged an error when outdoor unit capacity not yet setup or systematically unauthorized setting. Error Diagnosis 1 Check the Was EEPROM replaced when PC board was replaced? control Replace EEPROM PC board 2 Installation Set an applicable capacity value on the item code 81 display of maintenance remote...
  • Page 154 L13 Indoor unit type setting error Error Detection method • Discordance model(s) between outdoor and indoor units are detected. 1 Discordance Are models for outdoor and indoor units matched respectively? Unit (Ex: Are multiple indoor units connected to commercial outdoor units?) Replace indoor units.
  • Page 155 L18 4-way valve operation failure Error Detection Method It is judged an error when during heating operation (Comp. ON), the highest detected temperature at an outdoor unit heat exchanger (C1) was 20°C or more above the outdoor air temperature (Air Temp.) continuously for 5 minutes or longer, or the detected suction temperature (SCT) was 20°C or more above the outdoor air temperature continuously for 5 minutes or longer.
  • Page 156 P03 Compressor discharge temperature trouble Error Detection Method • When the discharge temperature is over 106°C. Error Diagnosis Additional 1 Adjustment refrigerant charge Not additional refrigerant charged refrigerant charge Adjust the refrigerant amount Tends to have insufficient refrigerant charge in the system. Replace CR board 2 Blockage in Open service valve...
  • Page 157 P04 High pressure trouble Error Detection Method It is judged an error if the internal circuit of the high pressure switch is dead. The electronic circuitry of the high pressure switch is cut off if the pressure at the pressure sensor port of the high pressure switch reaches 3.80 MPa.
  • Page 158 3 Problem Prevent air short The intake temperature (ambient temperature) of the indoor unit is around the circuit above 36°C. heat exchanger Clean the filter The filter of the indoor unit is clogged. Replace the indoor fan (motor) The fan of the indoor unit is broken or the fan motor is faulty. 4 Blockage Is the outdoor unit’s electronic control valve operating correctly? in the...
  • Page 159 P05 AC power supply trouble Error Detection Method • Instantaneous blackout • Zero-cross (waveform input of power supply) error • DC voltage charge failure Error Diagnosis Note : The work involved in diagnosing each of the items is extremely dangerous, so turn the power off at the breaker before performing the tests.
  • Page 160 P13 Alarm valve open Error Detection Method Detection is performed only in the test run. When once detected or the test run finished without any error, the second detection will not be done. In case of forgetting to open a valve, P04 (high-pressure switch operational alarm) is occasionally preceded due to the following conditions.
  • Page 161 P14 O sensor detect Error Detection Method • It is judged an error whenever the outdoor unit receives the signal “O Alarm Occurred” from the indoor unit. • With the indoor unit’s EEPROM setting (item code 0B) set to 0001, the EXCT input was shorted. Error Diagnosis 1 System Is an O...
  • Page 162 Table 1. Setting the System Address [S002: Rotary switch (yellow), S003: 2P DIP (black)] S003 setting S002 setting (system Outdoor system address No. address switch) 1P (10s digit) 2P (20s digit) 1 refrigerant system only Link wiring 5-49...
  • Page 163 P16 Compressor overcurrent trouble Meaning of Alarm • Secondary current effective value detected the overcurrent (trip current value). Single-phase model (2.5hp – 3hp) : Trip current = 23.0 A 3-phase model (4hp – 6hp) : Trip current = 17.0 A Single-phase model (4hp –...
  • Page 164 4 Check the Take measures Outdoor air intake temperature is high. situation Correct May be caused by poor outdoor unit air flow (dirty or clogged heat exchanger, blocked discharge port, etc.) Prevent air short Air short circuit has occurred. This is a phenomenon when circuit discharged air (exhaust heat) from the outdoor unit is drawn back into the suction vent.
  • Page 165 9 Check the See what happens. Replace the HIC PC board and operate the unit. (Apply putty and HIC PC screws must not be loose) Does it operate normally? boards 10-1 10 Check the outdoor 10-1 Replace the control PC board and operate the unit. See what happens.
  • Page 166 Outdoor Unit Control HIC PCB A746895 : (U-60PE1R5, U-71PE1R5) A746846 : (U-100PE1R5) (for single-phase outdoor unit HIC PCB) (for single-phase outdoor unit HIC PCB) A746847 : (U-125PE1R5, U-140PE1R5) A746967 : (U-100PE1R8, U-125PE1R8, U-140PE1R8) (for single-phase outdoor unit HIC PCB) (for 3-phase outdoor unit PCB) 5-53...
  • Page 167 P22 Outdoor unit fan motor trouble Error Detection Method • It is judged an error when the outdoor fan motor’s rotating signal cannot be detected normally. Error Diagnosis 1 Wiring Are the connectors “CN-FMA”, “CN-FMB”, “CN-FM1”, and “CN-FM2” firmly connected to the outdoor control PC board Correct the connector (lock engaged)? connections...
  • Page 168 P29 Lack of INV compressor wiring, INV compressor actuation failure (including locked) due to DCCT failure Error Detection Method • Abnormal current is detected at DCCT before start-up. • Start-up failed during overcurrent and/or step-out detected. • Open-wire of compressor and/or backspin detected. •...
  • Page 169 P31 Group control error Error Detection Method • Other indoor unit alarms within the group. 1 Other indoor Survey the indoor unit that alarms other than “P31” in the indoor unit group and specify the unit causes of failure. 5-56...
  • Page 170 Outdoor Unit Control HIC PCB A746895 : (U-60PE1R5, U-71PE1R5) A746846 : (U-100PE1R5) (for single-phase outdoor unit HIC PCB) (for single-phase outdoor unit HIC PCB) A746847 : (U-125PE1R5, U-140PE1R5) A746967 : (U-100PE1R8, U-125PE1R8, U-140PE1R8) (for single-phase outdoor unit HIC PCB) (for 3-phase outdoor unit PCB) 5-57...
  • Page 171: Inspection Of Parts (Outdoor Unit)

    5-4. Inspection of Parts (Outdoor Unit) (1) Electronic control valve (MOV1) MOV1: Measure the voltage between plug pin 5 and pins 1 through 4 at the CN-MOV1 connector (5P, white) on the outdoor unit control PCB. (Because of the pulse output, a simplified measurement method is used. Set the tester to the 12 V range;...
  • Page 172: Symptom: Thermostat In Off Continues Or Cycles Off & On Too Frequently

    5-5. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently How to detect abnormality • Abnormality does not occur. Protective function can be checked when the outdoor maintenance remote controller is connected. Error Diagnosis Adjust setting Indoor control Setting temperature reaches the level set ON thermostat.
  • Page 173 – MEMO – 5-60...
  • Page 174: Outdoor Unit Maintenance Remote Control

    6. OUTDOOR UNIT MAINTENANCE REMOTE CONTROL 6-1. Overview ........................6-2 6-2. Functions ........................6-2 6-3. Normal Display Operations and Functions ............6-3 6-4. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor Temperatures ......................6-6 6-5. Monitoring the Outdoor Unit Alarm History: Display of Outdoor Unit Alarm History ........................
  • Page 175 6-1. Overview What is the outdoor unit maintenance remote controller? Beginning with the DC-INV series of outdoor units, nonvolatile memory (EEPROM) is used in the outdoor unit PCB. In this way, the setting switches that were located on earlier PCBs have been converted to EEPROM data. This remote controller is an out- door unit maintenance tool that is used to make and change the EEPROM settings.
  • Page 176 Temperature monitor • Displays the indoor/outdoor unit sensor temperatures. Outdoor unit alarm history monitor • Displays the outdoor unit alarm history. Setting modes • Setting mode 1 and setting mode 2 are used to make the outdoor EEPROM setting. 6-3. Normal Display Operations and Functions Normal display functions •...
  • Page 177 Display (functions) • Use the temperature setting buttons to change the item code. Item code Display contents Remarks 00(1) Outdoor unit contents (code) : OFF when normal At initial status Blinking 8 - alarm code display at pre-trip,LED (2) No. of indoor units connected in that refrigerant system Unit Nos.
  • Page 178 *2: 7-segment, 4-digit display for remote controller timer display The connected unit Nos. are displayed as shown below, using the 7-segment 4-digit ( ) display and the colon. ● Display for unit Nos. 1 – 20 Not lit Not lit Not lit Not lit Meaning of display colon...
  • Page 179 6-4. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor Temperatures <Operating procedure> (1) Press and hold the button and button simultaneously for 4 seconds or longer to switch to temperature monitor mode. During temperature monitoring, “Service Monitor” is lit. (The display and operations are the same as when monitor mode is started from the unit remote controller.) (2) Press...
  • Page 180 6-5. Monitoring the Outdoor Unit Alarm History: Display of Outdoor Unit Alarm History Displays outdoor unit alarms only. Does not display indoor unit alarms. Check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device. <Operating procedure>...
  • Page 181 List of Item Codes (Some item codes cannot be set due to the type of models.) Item code Parameter Control system schedule Do not set Control system schedule Do not set Control system schedule Do not set Snowfall sensor operation 0 = No sensor, control performed 1 = No sensor, control not performed 2 = Sensor present, control performed...
  • Page 182 The display returns to the normal display mode. Display of fi rst 3 digits Display of last 3 digits 80: <Refrigerant type> A and B are displayed alternately. (Example shows 000 410 (R410A).) List of Item Codes Item code Parameter Refi...
  • Page 183 – MEMO – 6-10...
  • Page 184: Table Of Contents

    7. REMOTE CONTROLLER FUNCTIONS SECTION 7-1. Simple Settings Function ..................7-2 7-2. List of Simple Setting Items ..................7-3 7-3. Detailed Settings Function ..................7-4 7-4. List of Detailed Setting Items .................. 7-5 7-5. Simple Setting Items ....................7-9 7-6. Detaild Setting Items ....................
  • Page 185: Simple Settings Function

    7-1. Simple Settings Function • This allows the filter lifetime, operating mode priority change, central control address, and other settings to be made for an individual or group- control indoor unit to which the remote controller used for simple settings is connected. When simple settings mode is engaged, operation stops at the individual or group-control indoor unit to which the remote controller for simple settings is...
  • Page 186: List Of Simple Setting Items

    7-2. List of Simple Setting Items Setting data Item code Item Description 0000 Not displayed 0001 150 hours Filter sign ON time 0002 2,500 hours (filter life time) 0003 5,000 hours 0004 10,000 hours 0005 Use the filter clogging sensor. 0000 Standard (setting at time of shipping) Degree of filter fouling Highly fouled...
  • Page 187: Detailed Settings Function

    7-3. Detailed Settings Function • This allows the system address, indoor unit address, and other settings to be made for the individual or group-control indoor unit to which the remote controller used for detailed settings is connected. When detailed settings mode is engaged, operation stops at the individual or group-control indoor unit where the remote controller used for detailed settings is connected.
  • Page 188: List Of Detailed Setting Items

    7-4. List of Detailed Setting Items Setting data Item Item code Description Description Description 4-Way Cassette 0000 1-Way Cassette (D1) 0001 0002 2-Way Cassette (L1) (U1, Y1) Low Silhouette Ducted/ 0003 1-Way Cassette (D1) 0005 Slim Low Static Ducted 0006 Ducted (E1) Type (F1, M1)
  • Page 189 Setting data Item code Item Description Forced thermostat ON 0000 5 minutes (1B) time 0001 4 minutes –10°C –010 –9°C –009 Cooling discharge –8°C –008 temperature shift 0010 10°C –10°C –010 –9°C –009 Heating discharge –8°C –008 temperature shift 0010 10°C 0001 ±...
  • Page 190 Setting data Item code Item Description 0000 No forced operation 0001 Forced operation for 1 minute Automatic drain pump operation Continuous operation 0060 None 0000 Ventilation fan operation 0001 Ventilation fan operated by remote controller. Wired remote controller 0000 Not used. (Body sensor is used.) Remote control sensor is used.
  • Page 191 Setting data Item code Item Description DC fan tap Purpose operating mode 0000 Standard Standard (setting at shipment) High ceiling use High ceiling setting 1 (with standard panel) Ultra long-life filter, oil guard panel, ammonia 0001 For low static- deodorizing filter, optical regenerative pressure filter Fan tap setting deodorizing filter...
  • Page 192: Simple Setting Items

    7-5. Simple Setting Items Item code Item Description Filter sign ON time setting Changes the indoor unit filter lifetime when a high-performance filter or (filter lifetime) other optional product is installed. Reduces the filter sign ON time to 1/2 of the standard time (setting at the Degree of filter fouling time of shipping) for cases when filter fouling is more severe than normal.
  • Page 193 When the operating mode at the priority remote controller is changed, the operating modes of other remote controllers change as shown below. Mode change at priority remote controller Operating modes at other remote controllers Current mode New mode Current mode New mode Cooling or dry Heating...
  • Page 194: Detaild Setting Items

    7-6. Detaild Setting Items Item code Item Description Unit type Set when the indoor unit EEPROM memory is replaced during servicing. Indoor unit capacity System (outdoor unit) These are not set at the time of shipping from the factory. address These must be set after installation if automatic address setting is not Indoor unit address performed.
  • Page 195 Item code Item Description 1F (Upper limit) Cooling 20 (Lower limit) This setting changes the temperature range (upper limit and lower 21 (Upper limit) Change to the Heating limit) which is set from the remote controller or central control device. 22 (Lower limit) remote control The set upper limit must be greater than or equal to the lower limit.
  • Page 196 (Continued from previous page) Item code Item Description Heat exchanger The heat exchanger temperature control point for prevention of cold temperature for cold air air discharge during heating operation can be changed. discharge The indoor unit PCB optional output for the fan can be switched Fan output switching according to the purpose of use.
  • Page 197 DC Fan Tap Change Procedure <Procedure> Be sure to turn the main power OFF before performing the steps below. (1) Check the optional product that will be used from the table below. Setting No. Optional part name Optional part No. Air-blocking material (for 3-direction discharge) CZ-CFU2 Air-blocking material (when a discharge duct is connected) CZ-CFU2...
  • Page 198: Remote Controller Servicing Functions

    7-7. Remote Controller Servicing Functions • The remote controller includes a number of servicing functions. Use these as needed for test runs and inspections. List of Servicing Functions Functions Description Button operation Reset operation Unit status Operation with forced Press and hold the button for 4 Test run thermostat ON...
  • Page 199 Sensor Temperature Display Function (displayed regardless of whether unit is operating or stopped) The procedure below displays the sensor temperatures from the remote controller, indoor unit, and outdoor unit on the remote controller. <Procedure> 1 Press and hold the buttons simultaneously for 4 seconds or longer.
  • Page 200: Table Of Contents

    8. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER RECEIVER ■ Warning 8-1. Warning about Installation of Receivers ..............8-2 8-2. Warning about Installing Remote Controls ............8-2 ■ Optional Controller (Remote Controller) ................ 8-3 8-3. Names and Functions ....................8-3 8-4.
  • Page 201: Warning About Installation Of Receivers

    ■ Warning 8-1. Warning about Installation of Receivers The wireless remote uses a very weak infrared light for its signal, which can result in the signal not being received because of the following influences, so take care in where the unit is installed. ·...
  • Page 202: Optional Controller (Remote Controller)

    ■ Optional Controller (Remote Controller) Wireless Remote Controller CZ-RWSU2 / CZ-RWST2 / CZ-RWSL2 / CZ-RWSC2 / CZ-RWSY2 / CZ-RWSK2 One remote control can control a group of up to eight indoor units. 8-3. Names and Functions REMOTE CONTROLLER Use this when switching to detect Displays the operation status.
  • Page 203 RECEIVER CZ-RWSU2 Receives the signal sent from the 1. Receiver remote control. 2. Emergency Display lamps operation button When an error occurs, one of the lamps flashes. When a display lamp is blinking, refer to " Before Requesting Service ". 3.
  • Page 204: Setting The Current Time

    8-4. Installing Batteries 1. Remove the cover. 2. Insert two AAA alkaline batteries. Put the batteries in with the polarity [+/–] as shown in the figure. 3. Gently insert one end of an unfolded paper clip (or a similar object that can fit) into the Reset hole and press the Reset button inside the hole and then put the cover back on.
  • Page 205 8- 6. Operation , Dry , Cool , Fan Auto , Heat Models that only provide the cooling function cannot operate in the auto or heating modes. Power: Turn on the power of the indoor unit at least 14 hours before operation. 1.
  • Page 206: Timer Operation

    8-7. Timer Operation When setting the timer, make sure the current time on the remote control is accurate. The timer’s clock can only be set when the display of the remote control is ON. After setting the timer, put the remote control in a place where its signal will reach the receiver of the indoor unit.
  • Page 207: Adjusting The Wind Direction

    8-8. Adjusting the Wind Direction Never try to manually move the flap (up-down wind direction plate) that is operated by the remote control. When the unit stops, the flap (up-down wind direction plate) automatically faces downwards. When the unit is in heating standby, the flap (up-down wind direction plate) faces upward. Also, bear in mind that the flap starts swinging after the heating standby mode is released, but the display on the remote control indicates Auto Flap during standby heating as well.
  • Page 208: Using The Remote Control

    8-10. Using the Remote Control Point the transmitter of the remote control at the receiver. When the signal is received correctly it will beep once. (It beeps twice only when the unit starts operating.) The signal can be received at a distance of about 6 meters. This distance should be used only as a guide. It depends on battery strength.
  • Page 209 Matching up Addresses Setting Remote Control Addresses 1. If you press at the same time , “ ” will blink. 2. While holding down, every time you press , it cycles from ALL 3… ALL. Set it to the receiver address switch of the indoor unit you wish to operate. 3.
  • Page 210: Emergency Operation

    8-13. Emergency Operation Use [Emergency Operation] in the following situations when there is an urgent need. When the remote control’s batteries have failed. When the remote control is broken. When the remote control is lost. Figures: CZ-RWSU2, CZ-WRSY2 and CZ-RWST2 are of receivers (inside indoor unit), CZ-RWSL2 is of the operation panel (inside indoor unit) and Indoor Unit (K1 type) is of its front panel.
  • Page 211: Miscellaneous Settings

    8-14. Miscellaneous Settings A variety of changes can be made to settings, depending on the indoor unit being used. Wind Direction (flap) indicator, operation mode indicator, time display (24 hour, AM/PM), Heat Max Temp For information about the flap function, refer to the users’ manual of the unit being used. (These settings are saved in nonvolatile memory in the remote control, so even when its batteries are changed, the settings do not have to be made again.) First check the display of the remote control when the unit is stopped and then make any desired settings.
  • Page 212: Before Requesting Service

    8-15. Before Requesting Service Before requesting service, please check the followings. Solution Problem Cause The power to the indoor unit is not ON. Make sure the power to the indoor unit is ON. The unit doesn’t work even when is pressed on the Is the Normal/Stop All switch in the Stop All Switch it to the Normal position and cancel remote control.
  • Page 213: How To Install The Wireless Remote Controller Receiver

    How to Install the Wireless Remote Controller Receiver 8-16. Common to All Models 1. Warnings about Installation of Receivers The wireless remote uses a very weak infrared light for its signal, which can result in the signal not being received because of the following influences, so take care in where the unit is installed.
  • Page 214 CZ-RWSU2 S003 → Bit 1: OFF Screw Cable clamp Receiver PCB PCB cover Adjustable Corner Cap CZ-RWST2 CZ-RWSL2 DIP Switch 3 S003 → Bit 3: OFF CZ-RWSC2 RCU: MAIN → RCU: SUB 8-15...
  • Page 215 8-17. CZ-RWSU2 1. Accessories Accessories Quantity Accessories Quantity Dry-cell Batteries Receiver Users Manual 6 Truss Self-Tapping Screws 4 X 16 Cable clamp Remote Control Remote Control Holder 2. Installing the Receiver The receiver can only be installed on the corner indicated in Fig. 8-1, so consider how the panel will face when it is installed on the indoor unit.
  • Page 216 3. Wiring the Receiver Wiring Diagram Indoor Unit Receiver PCB Terminal Strip for White Wiring Remote Black Controls Connections Connect the wires from the receiver to the remote control terminal strip on the indoor unit. (Polarity does not matter) 4. Test Operation CZ-RWSU2 Implementing a Test Run S003...
  • Page 217 8-18. CZ-RWST2 1. Accessories Accessories Quantity Accessories Quantity Receiver Dry-cell Batteries Users Manual Remote Control Truss Self-Tapping Screws 4 X 16 Remote Control Holder Cable tie 2. Installing the Receiver Ceiling Suspended Model (1) Open the air inlet grill on the side panel, remove the 1 screw and then move it toward the front (direction of the arrow) and remove it.
  • Page 218 Unidirectional cassette model for high ceilings/Unidirectional ceiling cassette model (1) While spreading the tabs of the cover, pull it out from the panel to the front. (Fig. 8-10) (2) Pass the lead wire through the panel and install the receiver in the hole in the panel. (The projecting parts of the receiver hold it in the hole in the panel) (3) Press the lead wire from the receiver in along the rib on the back of the panel.
  • Page 219 4. Test Operation Implementing a Test Run 1. Turn the #1 DIP switch [S003] on the receiver’s PCB from OFF to ON and operate the wireless remote control with its Start/Stop button. 2. During a test run, all display lamps on the display will light up. 3.
  • Page 220 8-19. CZ-RWSL2 1. Accessories Accessories Quantity Accessories Quantity Operation Panel Dry-cell Batteries Users Manual Display Truss Self-Tapping Screws 4 X 16 Remote Control Pan Head Self-Tapping Screws 4 X 10 Plastic Clamp L150 Remote Control Holder Installing the Display/Operation Panel Resin Panel Installing the Operation Panel Remove the 2 screws and remove cover A from the back of the panel.
  • Page 221 Metal Panel Installing the Operation Panel Remove the 2 screws and remove cover A from the back of the panel. (Fig. 8-19) Fasten the operation panel to the location in the diagram below with the 2 enclosed screws (4 10). (Fig. 8-20) Pass the wiring for the display (W2, 6P white connector) through the back of the panel.
  • Page 222 4. Test Operation Implementing a Test Run 1. Turn the #1 DIP switch of the operation panel from OFF to ON (Down Up) and operate the wireless remote control with its Start/Stop button. 2. During a test run, all display lamps on the display will light up. 3.
  • Page 223 8-20. CZ-RWSC2 1. Accessories Accessories Quantity Accessories Quantity Receiver Users Manual (Enclosed 200 mm wiring) Truss Self-Tapping Screws 4 X 16 Remote Control Small screw Remote Control Holder Wood screw Cable tie Dry-cell Batteries 2. Installing the Receiver When using a separately installed receiver as a built-in model, install it to the JIS switch box (field supply) shown in the diagram on the right, which has been built into the wall on site in advance.
  • Page 224 When using a separately installed receiver as an exposed model, attach it to a wall where the receiver can be affixed. (1) Put a slotted screwdriver or the like into the groove on the bottom of the receiver unit and twist it to remove the bottom of the case.
  • Page 225 When using a receiver that has been installed separately into the ceiling, use the enclosed fittings for installing to a ceiling. Part A Part B Fig. 8-29 Fig. 8-31 Fig. 8-30 (1) Remove the metal plate of the receiver by slipping a slotted screwdriver or the like into the cutout on the bottom. (2) Cut out a hole in the ceiling to match the dimensions of the enclosed template.
  • Page 226 If it is to be used as an exposed model: Wiring Diagram Terminal strip for wiring White the remote control of the Black indoor unit Receiver Remote Control Cord (Sold Separately) Use remote control cord (sold separately) for wiring a separately installed receiver. (1) For instructions on how to install a remote control cord (sold separately), refer to the chapter on Using as an Embedded Model in Installing Separate Receivers.
  • Page 227 8-21. CZ-RWSY2 1. Accessories Accessories Quantity Accessories Quantity Receiver Remote Control Holder AAA alkaline batteries Tapping screw 4x16 Clamper Remote Controller 2. Installing the Receiver Unit As the receiver can only be installed in the corner where the panel wire comes out, as shown in Fig. 8-32, consideration should be given to orientation when fitting the panel to the indoor unit.
  • Page 228 3. Pass the wire from the wireless receiver through the grille. (Fig. 8-34) 4. Fit the panel to the indoor unit and connect the wire from the receiver to the connector (CN130/WL/WHT/10P) on the indoor control board. (Fig. 8-35) 5. After fixing the panel in place, fit the receiver to the panel taking care not to trap the wire from the receiver. 6.
  • Page 229 8-22. Common to All Models 1. The Self-Diagnosis Function Display and What is Detected Alarm Display in the table below indicates the content of alarms that are displayed when a wired remote control is connected. For information on how to deal with the alarms, refer to the Mounting Instructions for the indoor unit or to Test Run or servicing materials.
  • Page 230 3. Setting Up Remote Control Functions The functions of the wireless remote can be set on site. (These settings are saved in nonvolatile memory in the remote control, so even when its batteries are changed, the settings do not revert to the defaults.) NOTE The operation of the air conditioner can be impacted, depending on the settings made, so only service personnel should make the settings.