I R410A Models Indoor Units Indoor Unit Type Indoor Unit Type CAFP* CAFP* 4-Way Air Discharge 4-Way Air Discharge CAFP 124 R CAFP 164 R CAFP 184 R CAFP 254 R CAFP 364 R CAFP 484 R Semi-Concealed MAFP Wall-Mounted...
1-4. Dimensional Data (A) Indoor Units: Wall-Mounted Type 12, 16, 18 Type Wide tube φ12.7 (length: Approx. 400 mm) Drain and wiring port (φ9.52) Narrow tube φ6.35 (length: Approx. 470 mm) Drain hose VP13 (length: Approx. 450 mm) 25 type 25 Type 1,140 Drain hose VP13 (length: Approx.
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1-4. Dimensional Data (A) Indoor Units: Ceiling-Mounted Type Length Type Air intake 1125 1180 36, 48 1540 1595 Ceiling side 27.5 27.5 Unit: mm (Suspension bolt pitch) Rear (Figure shows view from front) Left side Right side (Narrow tubing • Wide tubing) Narrow tubing...
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1-4. Dimensional Data (A) Indoor Unit: Concealed-Duct Type 25 Type (Air outlet duct flange) (Suspension bolt pitch) Refrigerant liquid line ø9.52 (narrow tube) (Use the tube connector) Refrigerant gas line ø15.88 (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D. 32 mm) Suspension lug Power supply outlet (2-ø30) Fresh air intake port (ø150)
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1-4. Dimensional Data (A) Indoor Unit: Concealed-Duct Type 36, 48 Type (Air outlet duct flange) (Suspension bolt pitch) Refrigerant liquid line ø9.52 (narrow tube) Refrigerant gas line ø15.88 (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D. 32 mm) Suspension lug Power supply outlet (2-ø30) Fresh air intake port (ø150)
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1-4. Dimensional Data (A) Indoor Unit: Flange for Air Intake Duct (Field Supply) For Concealed-Duct Type Thickness more than T1.2 mm 260 (O.D.) (mm) 180 5 × 180P = 245 (245 × 1) 71 type 900 120 230 6 × 230P = 1,380 120 490 (245 ×...
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1-4. Dimensional Data (B) Outdoor Units: GRFP255-365 Hole for anchor bolt (4–R6.5) / Anchor bolt: M10 Refrigerant tube joint (liquid line tube) • Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (gas line tube) • Flare connection 5/8 in (15.88 mm) Refrigerant tubing inlet (knock-out hole) Power supply inlet (knock-out hole φ38, φ29, φ19, φ16 mm) 1 - 59...
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1-4. Dimensional Data (B) Outdoor Unit: GRFP485 Hole for anchor bolt (4–R6.5) / Anchor bolt: M10 Refrigerant tube joint (liquid line tube) • Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (gas line tube) • Flare connection 5/8 in (15.88 mm) Refrigerant tubing inlet (knock-out hole) Power supply inlet (knock-out hole φ38, φ29, φ19, φ16 mm) 1 - 60...
1-5. Refrigerant Flow Diagram Outdoor Unit: GRFP485L-R Indoor Unit: 48 Type Accumlator Compressor Gas line service valve φ15.88 Muffler Heat exchanger 4-way valve Heat exchanger Distributor Freeze-prevention coil (Attached to the heat exchanger) Strainer Electronic ref. control valve Liquid line service valve φ9.52 Distributor...
1-7. Capacity Correction Graph According to Temperature Condition GRFP255-365-485R Cooling capacity ratio (maximum capacity) Heating capacity ratio (maximum capacity) For 50 Hz and 60 Hz For 50 Hz and 60 Hz Indoor air intake temp (°C DB) Indoor air intake temp (°C DB) 16°C 22WB 20°C...
1-8. Noise Criterion Curves Wall-Mounted Type Both 50Hz and 60Hz Strong Weak MODEL :MAFP125-165R MODEL :MAFP185R SOUND LEVEL : STRONG 36 dB(A) SOUND LEVEL : STRONG 39 dB(A) HIGH 32 dB(A) HIGH 35 dB(A) 28 dB(A) 31 dB(A) 1 m in front at height of 1 m 1 m in front at height of 1 m CONDITION CONDITION...
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1-8. Noise Criterion Curves Ceiling-Mounted Type B oth 50Hz and 60Hz S trong Weak MODE L :SPAFP255R MODE L :SPAFP365R S T R ONG S OUND LE V E L : 39 dB (A) S OUND LE V E L : S T R ONG 42 dB (A) HIG H...
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1-8. Noise Criterion Curves Conc ealed-Duc t Type MODE L :DSAFP255R S OUND LE VE L : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18 C ONDIT ION : Under the unit 1.5 m S ingle P has e, 50 Hz S OUR C E : 220 - 230 - 240 V , NC -50...
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1-8. Noise Criterion Curves Concealed-Duct Type MODEL :DSAFP365R MODEL :DSAFP485R SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21 SOUND LEVEL : HIGH 40 dB(A), NC 33 / LOW 33 dB(A), NC 25 CONDITION : Under the unit 1.5 m CONDITION : Under the unit 1.5 m SOURCE...
Electrical component box 1-9. Indoor Fan Performance Booster cable Concealed-Duct Type Booster cable motor If external static pressure is too great (due to long extension of ducts, for example), the air flow volume Fan motor socket may drop too low at each air outlet. This problem may (At shipment) (Booster cable installed) be solved by increasing the fan speed using the fol-...
1-10. Air Throw Distance Chart (Indoor temp.: Cooling 27°C , Heating 20°C) W all-Mounted T ype MAFP125-165R MAFP185R Horizontal air throw dis tance (m) Horizontal air throw dis tance (m) 67.5 67.5 22.5 22.5 C ooling Heating C ooling Heating MAFP255R Horizontal air throw dis tance (m) 67.5...
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Ceiling-Mounted Type SPAFP255R SPAFP365R Horizontal air throw dis tance (m) Horizontal air throw dis tance (m) Air speed at center Air speed at center P ath at center P ath at center P ath at center P ath at center Dis charge angle is approx.
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1-11. Installation Instructions I TUBING LENGTH (A) Single type Single 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 is limited by the elevation difference between the 2 units.
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(B) Simultaneous operation multi (Twin, Triple, Double-Twin) NOTE Because the indoor units run simultaneously, install them within the same room. Symbol Actual Item Description length (m) Single Triple Double-Twin Twin L + 1 L + 1, L + 2 L + L1 + 1, L + L1 + 2 Maximum allowable One-way length of tubing from outdoor Allowable...
Table 1-2 Tubing Data for Models (Single, Twin, Triple, Double-Twin) Models GRFP255L-R GRFP365L-R GRFP485L-R Tubing Data Tubing size Narrow tube mm (in.) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) outer diameter Wide tube mm (in.) 15.88 (5/8) 15.88 (5/8) 15.88 (5/8) Limit of tubing length Outdoor unit is placed Limit of elevation...
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1. This unit requires no additional refrig- CAUTION erant charge up to tubing length 30 m. In case of more than 30 m, additional refrigerant charge is required. Refer to Tables 1-2 and 1-3. 2. In case of multi type installation, indoor units should be installed within the same room.
I SELECTING THE INSTALLATION SITE Ceiling-Mounted Type Ceiling Indoor Unit AVOID: areas where leakage of flammable gas may be Wall expected. min. 25 cm min. 25 cm places where large amounts of oil mist exist. Front view direct sunlight. NOTE locations near heat sources which may affect the The rear of the indoor unit can be installed flush performance of the unit.
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Outdoor Unit Exhaust fan AVOID: Hot air heat sources, exhaust fans, etc. (Fig. 1-4) damp, humid or uneven locations Heat source Out- door unit choose a place as cool as possible. choose a place that is well ventilated and outside air temperature does not exceed maximum 45°C constantly.
I ELECTRICAL WIRING General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit (7) Regulations on wire diameters differ from locality as shown on its nameplate, then carry out the to locality. For field wiring rules, please refer to wiring closely following the wiring diagram.
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G Wiring System Diagrams Indoor unit (No. 1) Outdoor unit Power supply INV unit 220-240V 50Hz Power supply 200-240V 50Hz Ground Remote controller Ground Ground Indoor unit (No. 2) Power supply 220-240V 50Hz Ground Ground Indoor Group control: unit (No. 3) Power supply 220-240V 50Hz...
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CAUTION (1) When linking outdoor units in a network (S-net link system), disconnect the terminal extended from the short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor units except any one of the outdoor units. (When shipping: In shorted condition.) Otherwise the communication of S-net link system is not performed.
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(5) Use shielded wires for inter-unit control wiring (C) and ground the shield on both sides, other- wise misoperation from noise may occur. Connect wiring as shown in the section “Wiring System Diagrams.” Shielded wire Loose wiring may cause the terminal to overheat or Ground Ground WARNING...
2-1. Control Functions (2) If the outdoor heat exchanger temperature (C2) is 24°C or higher continuously for 5 minutes, fan Electronic control valve control operation may stop (same conditions as when the Opening of the electronic control valve is controlled thermostat is OFF).
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Overcurrent protection control Heating high-load control (1) If the overcurrent protection circuit detects abnor- The below control is performed during heating opera- mal current, the compressor is stopped. (Error tion, based on the indoor heat exchanger temperature count = 1.) The compressor then restarts after 3 (E2).
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Defrost control Defrost control Defrost sequence Heating operation (25-minute mask) Frost detection Defrost start (reverse cycle defrost) • Operating frequency: 61.8 Hz • Outdoor unit fan: OFF Defrost in progress • Electronic control valve: step 300 • 4-way valve: OFF •...
2-2. Outdoor Unit Control PCB (1) Layout Diagram (GRFP255-365) Intake temperature (TS) sensor Heat exchanger temperature (C1) sensor Outdoor air temperature (TO) sensor Heat exchanger temperature (C2) sensor Compressor temperature (TD) sensor Refrigerant recovery switch (S005) Quiet mode plug (CN028) System address switch (S002) EXCT plug (CN026)
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2-2. Outdoor Unit Control PCB (2) Layout Diagram (GRFP485) Intake temperature (TS) sensor Heat exchanger temperature (C1) sensor Outdoor air temperature (TO) sensor Heat exchanger temperature (C2) sensor Compressor temperature (TD) sensor Refrigerant recovery switch (S005) Quiet mode plug (CN028) System address switch (S002) EXCT plug (CN026)
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2-2. Outdoor Unit Control PCB (AES125PIH) (3) Explanation of Functions S001 Push-button switch (black): Automatic address setting switch • If the system address switch (S002: set to 0 at time of shipment) setting is other than “0” (central control), press this switch once to automatically set the addresses at all indoor units which are in the same system, and are connected to that outdoor unit.
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Terminal plug 3P plug (black): Terminal plug for the communications line (CN015) • At the time of shipment from the factory, the short-circuiting socket (2P, black) is installed between pins 1 and 2 on the terminal plug (terminal = yes). •...
2-3. Indoor Unit Control PCB Switches and Functions ■ For AC fan motor (CR-TRP50A) EMG (CN044) OC (CN040) VARISTOR (VA041) OPTION DISP (CN072) GRL (C020) CHK (CN071) EXCT (CN073) T10 (CN061) POWER LED FILTER (CN070) EEPROM (IC010) FAN DRIVE (CN032) ■...
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■ For DC fan motor (CR-KRP50A) OPTION (CN014) FAN DRIVE (CN017) T10 (CN015) DISP (CN010) CHK (CN011) VARISTOR (VA002) JP001 EMG (CN018) EEPROM (IC002) EXCT (CN009) OC (CN019) FILTER (CN012) ■ For DC fan motor (CR-KRP80A) OC (CN019) EEPROM (IC002) JP001 EMG (CN018) VARISTOR (VA002)
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PCB Settings Section 1. Indoor Unit Control PCB Switches and Functions [Indoor unit control PCB] T10 (CN61-15): 6P plug (YEL) / Used for remote control operation. (Refer to the Remote Control Section.) Control items: (1) Start/stop input (2) Remote controller prohibit input (3) Start signal output (4) Alarm signal output EXCT (CN73-9):...
4-1. Meaning of Alarm Messages Blinking: OFF: Wired Wireless remote remote controller control receiver display display Possible cause of malfunction Remote controller is Error in receiving serial communication signal Serial commu- detecting error signal from (Signal from main indoor unit in case of group control) nication errors indoor unit Mis-setting...
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Blinking: OFF: Wired Wireless remote remote controller control receiver display display Possible cause of malfunction Ceiling panel connection failure Indoor protection Fan protective thermostat Activation of protective Alternately Float switch device Discharge temperature trouble Outdoor protection Open phase detected, AC power trouble No gas 4-way valve locked High cooling load...
4-2. LED Indicator Messages on Outdoor Control PCB LED 1 LED 2 Remarks Power ON sequence 1. No communication from indoor units in system If it is not possible to advance to 3, repeats 1 → 2. 2. Communication received from 1 or more indoor units in system At 3, changes to normal 3.
4-3. Symptoms and Parts to Inspect Remote Alarm Judgment and controller Judgment condition Clear condition contents correction alarm display Abnormal discharge Stops when temp. exceeds Recovery at restart 1. Check refrigerant cycle temperature 111°C. (gas leak). • Discharge temp. 2. Electronic control valve detected at or trouble above the specified...
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Remote Alarm Judgment and correction controller Judgment condition Clear condition contents alarm display Current detection Inverter stops after alarm is Recovery at restart 1. Stops immediately when circuit trouble detected. Alarm is output restarted. • AC current value is when inverter stops (pre-trip) •...
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Remote Alarm controller Judgment and correction Judgment condition Clear condition contents alarm display EEPROM trouble Reading/writing failure Recovery at power 1. Check EEPROM (IC901). reset 2. Check outdoor unit control PCB. Mismatch of indoor Indoor unit judges that type Recovery at power 1.
4-4. Details of Alarm Messages [Alarm “P29”] Input power detection circuit trouble (MDC trouble) Compressor does not run. Breakdown Motor current detection circuit trouble Is power OK? Correct power line. current Check and correct detection wiring. circuit wiring wiring and Check and correct connector wiring.
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(2) [Alarm “P26”] IGBT short-circuit protection on inverter control (IPDU) PCB HIC PCB trouble) Is power OK? Correct power line. circuit wiring, connector connections, and Correct. reactor connections Has filter PCB RY001 or RY002 relay activated? Has filter PCB Replace filter PCB. AC fuse blown? Disconnect U.V.W.
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CR-HIC280A CR-HIC80A (125 Type) (71, 100 Type) HIC– HIC – HIC + HIC + Resistance Between terminals Resistance 200 kΩ or more HIC + HIC – 300 kΩ or more HIC + 300 kΩ or more HIC + HIC + 300 kΩ...
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(4) [Alarm "P22"] Outdoor unit fan motor drive circuit trouble Are connectors CN003 and CN004 connected Correct the connector correctly to the outdoor unit control PCB? connections. Disconnect connectors CN003 and CN004 from outdoor unit control PCB, and rotate fan by hand. Does it rotate easily? Outdoor unit fan motor coil resistance is OK if it is as shown below.
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Sensor trouble (5) [Alarms “F04,” “F06,” “F07,” “F08,” “F12”] Are connectors CN020, 021, 022, 023, and 024 (TD, TO, C1, C2, and Correct the connector TS sensors) connected connections. correctly to the outdoor unit control PCB? Are the TD, TO, C1, Replace the TD, TO, C1, C2, and TS sensor resistance* C2, or TS sensor.
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Sensor Temperature Display Function (Displayed both when operating and stopped) The below check procedure can be used to display all remote controller, indoor unit, and outdoor unit sensor temperatures. <Check procedure> (1) Press and hold the button and button simultaneously for 4 seconds or longer. (2) Unit No.
Check Pin Short-circuit the cooling check pin (or heating check pin) on the outdoor unit control PCB to perform the control described below. 1. Thermistor checks The checks listed below are performed for 1 second each, in order from the top down. The results are dis- played by LED 1 and 2.
5-1. 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.
5-3. Normal Display Operations and Functions I Normal display functions • Connect the special service checker wiring to the outdoor unit PCB. RC (3P, blue) The connection is shown in the figure below. Outdoor PCB connector unit PCB (3P, blue) Special service checker wiring Relay connector (2P, white) Remote controller Assy...
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I Display (functions) • Use the temperature setting buttons to change the item code. Item code Display contents Remarks Outdoor unit alarm contents (code): OFF when normal At initial status 00 (1) Blinking 8-alarm code display at pre-trip, LED (2) No.
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*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 —...
5-4. 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 the...
5-5. 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>...
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List of Item Codes Item code Parameter Control system schedule Control system schedule Control system schedule Snowfall sensor operation 0 = No sensor, control performed 1 = No sensor, control not performed 2 = Sensor present, control performed 3 = Sensor present, control not performed Outdoor fan quiet mode 0 = Disabled 1 = Quiet mode...
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Settings mode 2 <Operating procedure> (1) Press and hold the button, button, and button simultane- ously for 4 seconds or longer. (2) Use the temperature setting buttons to change the item code. The item codes and setting data are shown in the table below. (3) Use the timer time buttons to change the setting data.
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List of Item Codes Item code Parameter Refrigerant type 407 = R407C 22 = R22 410 = R410A Outdoor unit capacity* 0 = Disabled 22 25 28 32 36 40 45 50 56 63 71 80 90 100 112 125 140 160 180 200 224 250 280 340 355 400 450 500 560 600 630 670 710 800 840 Control system schedule Control system schedule...
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