Page 3 - Important; ...In an area with High Winds; CAUTION
Please Read Before Starting This air conditioning system meets strict safety and operatingstandards. As the installer or service person, it is an importantpart of your job to install or service the system so it operatessafely and efficiently. For safe installation and trouble-free operation, you mus...
Page 4 - Contents
Section 1: SPECIFICATIONS ................................................................................................. I-1 1-1 Unit Specifications .......................................................................................... I-21-2 Major Component Specifications ......................
Page 6 - -1 Unit Specifications; POWER SOURCE
1 2 3 4 5 6 I-2 SM831148 1. Specifications 1-1 Unit Specifications Wall-Mounted Type Indoor Unit KHH2672R Outdoor Unit CH2672R POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 23,000 [9,500~23,000] 27,600 [8,000~27,600] (17˚F)** BTU / h 18,5...
Page 31 - -2 Major Component Specifications; DATA SUBJECT TO CHANGE WITHOUT NOTICE
1 2 3 4 5 6 I-27 SM831148 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No . XH2672R Source 230 - 208 VAC / 1 phase / 60 Hz Remote c o n t r o l l e r ( O p t i o n ) Wired or Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250...
Page 39 - MODEL No
1 2 3 4 5 6 I-35 SM831148 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No . UH2672R Source 230 - 208 V / 1 phase / 60 Hz Remote controller (Option) Wired or Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250 V, 5 A Fan (Numbe...
Page 51 - -3 Other Component Specifications
1 2 3 4 5 6 I-47 SM831148 1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No . XH2672R Power Transformer ATR – IIK224A Rated Primary 220 VAC, 60 Hz Secondary BRN - BRN : 14 V, 0.45 A, RED - RED : 14 V, 0.3 A Capacity — Coil resistance Ω WHT - WHT : 61.0 , RED - RED : 1.37 ...
Page 64 - Solenoid coil or 4 way valve
1 2 3 4 5 6 I-60 SM831148 1. Specifications 1-3 Other Component Specifications (B) Outdoor Unit MODEL No. CH2672R, C2672R Thermistor (Coil sensor) : TH2 to 5 Coil resistance k Ω 14 ° F : 23.7 , 50 ° F : 9.7 23 ° F : 18.8 , 68 ° F : 6.5 32 ° F : 15.0 , 86 ° F : 4.4 41 ° F : 12.1 , 104 ° F : 3.1 113 °...
Page 69 - Indoor unit : Ceiling Mounted Type
1 2 3 4 5 6 I-65 SM831148 1. Specifications 1-4 Dimensional data Indoor unit : Ceiling Mounted Type 26 Type Drain connectionDrain connection for left sideRefrigerant liquid line (3/8") Flare connectionRefrigerant gas line (5/8") Flare connectionHole for rear side refrigerant tubingHole for t...
Page 71 - Indoor unit : Concealed Duct Type
1 2 3 4 5 6 I-67 SM831148 1. Specifications 1-4 Dimensional data Indoor unit : Concealed Duct Type 26 Type Refrigerant liquid line (3/8") Flare connection Refrigerant gas line (5/8") Flare connection Upper drain port (O.D. 1-1/4)Bottom drain port (O.D. 1-1/32)Suspension lugPower supply inlet...
Page 73 - Thickness more than T1/16 inch
1 2 3 4 5 6 I-69 SM831148 1. Specifications 23/32 1-7/32 F G H G F 11/32 E D B (O.D.) A (Hole) C- ø 1/8 (Hole) 1/4 (Hole) 12-1/32 10-1/4 (O.D.) 29/32 7-7/8 1-25/32 5/16 1-25/32 31/32 13/32 2118_U_I 2- ø 1/8 13/32 31/32 8-9/32 31/32 A B C* * ø 1/8 Number of holes D E F G H I 26 type 39-9/32 37-7/8 5 ...
Page 76 - Dimensional Data
1 2 3 4 5 6 I-72 SM831148 1. Specifications 1-4 Dimensional Data (B) Outdoor Unit: CH2672R, C2672R CH3072R, C3072RCH3672R, C3672R
Page 78 - -5 Refrigerant Flow Diagram
1 2 3 4 5 6 I-74 SM831148 1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Unit: CH2672R, C2672R Indoor Unit: 26, 30, 36 Type CH3072R, C3072RCH3672R, C3672R
Page 79 - Temperature
I-75 SM831148 1. Specifications 1 2 3 4 5 6 1-5 Refrigerant Flow Diagram Outdoor Unit: CH4272R, C4272R Indoor Unit: 42 Type 1-6 Operating Range Temperature Indoor Air Intake Outdoor Air Intake Cooling Maximum 95 ° F DB / 71 ° F WB 109 ° F DB Minimum 67 ° F DB / 57 ° F WB 0 ° F DB Heating Maximum 80 ...
Page 81 - -8 Noise Criterion Curves
I-77 SM831148 1. Specifications 1 2 3 4 5 6 1-8 Noise Criterion Curves 4-Way Air Discharge Semi-concealed Type MODEL : XH2672R SOUND LEVEL : HIGH 38 dB(A), NC 31 LOW 31 dB(A), NC 23 CONDITION : Center, Under the unit 4.9 ft. SOURCE : 208 - 230 V, 1 Phase, 60 Hz MODEL : XH4272R SOUND LEVEL : HIGH 45 ...
Page 85 - The test results were obtained from an nechoic room.; NOTE
I-81 SM831148 1. Specifications 1 2 3 4 5 6 1-8 Noise Criterion Curves Outdoor Units REMARKS: 1. Value obtained in the actual place where the unit is installed may be slightly higher than the values shown in this graph because of the conditions of operation, the structure of the building, the backgr...
Page 86 - -9 Increasing the Fan Speed; N O T E
1 2 3 4 5 6 I-82 SM831148 1. Specifications 1-9 Increasing the Fan Speed Jumper cable Jumper cable Electrical component box (At shipment) (Jumper cable installed) 2159_M_I Fan motor socket Fan motor 900 Air Flow (CFM) External Static Pressure 0 50 0 0.1 0.2 0.3 0.4 0.5 150 700 500 300 Limit line L 1...
Page 87 - -10 Air throw distance chart; : LOUVER ANGLE 20 ̊ in Cooling mode
I-83 SM831148 1. Specifications 1 2 3 4 5 6 1-10 Air throw distance chart 4-Way Air Discharge Semi-concealed Type 0 3 7 10 13 17 20 0 3 7 10 13 HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY (ft./sec) VER TICAL DIST ANCE (ft.) AXIS AIR VELOCITY 2111_X_I Model: 26 Type Model: 36, 42 Type : LOUVER ANGLE ...
Page 89 - FAN SPEED
I-85 SM831148 1. Specifications 1 2 3 4 5 6 1-10 Air throw distance chart Wall Mounted Type Model: KHH2672R 5 Horizontal distance (ft.) 10 15 5 0 10 15 20 25 30 Axis air velocity (ft./sec.) Vertical distance (ft.) 0 ˚ 22.5 ˚ 45 ˚ 45 ˚ 67.5 ˚ Axis air velocity 2121_K_S COOLING - - - - - HEATING FAN S...
Page 90 - If outdoor unit is higher; Indoor unit type; Maximum length
1 2 3 4 5 6 I-86 SM831148 1. Specifications 1-11 Installation Instructions Tubing Length Single type Refrigerant tubing between the indoor and outdoorunits should be kept as short as possible. The length of the refrigerant tubes between theindoor and outdoor units are limited by the elevationdiffere...
Page 91 - Gas tube
I-87 SM831148 1. Specifications 1 2 3 4 5 6 Table 1-2 Tubing Data for Models Limit of elevation difference between the 2 units Models C(H)2672R C(H)3072RC(H)3672R C(H)4272R Tubing Data Tubing size Liquid tube in. (mm) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52) outer diameter Gas tube in. (mm) 5/8 (15.88) 5/8 ...
Page 92 - SELECTING THE INSTALLATION SITE; Indoor Unit; places where large amounts of oil mist exist.
1 2 3 4 5 6 I-88 SM831148 1. Specifications SELECTING THE INSTALLATION SITE Indoor Unit AVOID: areas where leakage of flammable gas may beexpected. places where large amounts of oil mist exist. direct sunlight. locations near inverter lamps which may affectperformance of the unit. locations near hea...
Page 93 - Installation requirements; damp, humid or uneven locations; Installation space
I-89 SM831148 1. Specifications 1 2 3 4 5 6 Fig. 1-4 Anchor bolts(4 pieces) Fig. 1-1 Out-doorunit Heat source Hot air Exhaust fan *4 *2 *3 *1 More than 25/64" More than 3.3 ft. More than 25/64" Inlet side C Outlet side Fig. 1-2 Fig. 1-3 *1 Inlet side More than 8" (field supply) A B (Grou...
Page 94 - Air-Discharge Chamber for Top Discharge
1 2 3 4 5 6 I-90 SM831148 1. Specifications Fig. 1-5 Air discharge Air discharge Air-Discharge Chamber for Top Discharge Be sure to install an air discharge chamber in the fieldwhen: it is difficult to keep a space of min. 20" between theair discharge outlet and an obstacle. the air discharge ou...
Page 95 - Dimensions of Wind Ducting
I-91 SM831148 1. Specifications 1 2 3 4 5 6 Dimensions of Wind Ducting Reference diagram for air-discharge chamber (field supply)For outdoor unit 2672R / 3072R / 3672R 1 2 (25/32) (25/32) (25/32) (25/32) 21-13/16 9-27/32 22-7/16 23-15/32 1-1/16 5-5/32 5-3/16 9-27/32 9-27/32 21-13/16 15/16 17/32 21-3...
Page 97 - Installation in lateral rows
I-93 SM831148 1. Specifications 1 2 3 4 5 6 Reference diagram for air-discharge chamber (field supply)For outdoor unit C(H)2672R / 3072R / 3672R / 4272RRequired space around outdoor unit If the air discharge chamber is used, the space shown below must be secured around the outdoor unit. If the unit ...
Page 98 - Dimensions of Snow Ducting
1 2 3 4 5 6 I-94 SM831148 1. Specifications Dimensions of Snow Ducting Reference diagram for snow-proof vents (field supply)For outdoor unit 2672R / 3072R / 3672R 25-13/32 17-15/32 9-3/16 16-25/32 27-29/32 3-31/32 11-29/32 16-25/32 9-3/16 27-29/32 30-3/32 1 4 5 6 2 1-21/32 25/32 5-3/32 19-1 1/16 9-3...
Page 100 - Reference diagram for snow-proof vents - 1; Top is blocked by an obstacle:
1 2 3 4 5 6 I-96 SM831148 1. Specifications Reference diagram for snow-proof vents - 1 Space requirements for setting - (1)C(H)2672R / 3072R / 3672R / 4272R with STK-BDRE80A & STK-BDR140U Min. I Min. I Min. M Min. N Min. H Min. J (1) Single-unit installation (2) Multiple-unit installation (2 or ...
Page 101 - Reference diagram for snow-proof vents - 2; [Obstacles to the front and rear of unit]; to the rear must be no taller than the height of the outdoor unit.
I-97 SM831148 1. Specifications 1 2 3 4 5 6 Reference diagram for snow-proof vents - 2 Space requirements for setting - (2)C(H)2672R / 3072R / 3672R / 4272R with STK-BDRE80A & STK-BDR140U Min. 11-13/36 Min. 11-13/16 Min. 39-3/8 Min. 7-7/8 Min. 59-1/16 Min. 78-3/4 Q Min. 11-13/16 Min. 39-3/8 Min....
Page 102 - -12 Electrical Wiring; General Precautions on Wiring; Outdoor Unit
1 2 3 4 5 6 I-98 SM831148 1. Specifications 1-12 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 wiringclosely following the wiring diagram. 2) Provide a power outlet to be used exclusively for each...
Page 103 - Basic wiring diagram for standard control; Recommended Wire Length and Wire; K Type; CH Type
I-99 SM831148 1. Specifications 1 2 3 4 5 6 Indoor Unit Control Wiring Type (B) Power Supply AWG #14 (C) Inter-Unit Control Wiring (D) Remote Control Wiring (E) Control Wiring For Group Control Trade Size of Conduit MOP (Fuse or HACR type circuit breaker) AWG #18 Use high voltage wire (300 V) *1 AWG...
Page 104 - WARNING; How to Connect Wiring to the Terminal; ) Cut the wire end with a wire cutter or wire-cutting
1 2 3 4 5 6 I-100 SM831148 1. Specifications Fig. 1-8 Stranded wire Ringpressureterminal . ni 8/ 3 pir t S Fig. 1-9 Wire Specialwasher Screw Ring pressure terminal Terminal plate Screw and Special washer Ringpressureterminal Wire WARNING Loose wiring may cause theterminal to overheat or resultin uni...
Page 107 - Processes and functions; PROCESSES AND FUNCTIONS
II-1 SM831148 1 2 3 4 5 6 2. Processes and functions 2. PROCESSES AND FUNCTIONS 2-1 Room Temperature Control .......................................................................................... II-22-2 Cold Draft Prevention (Heating Cycle) .........................................................
Page 108 - Chart Summary and Explanations; Room Temperature Control; located in the remote control unit.
1 2 3 4 5 6 II-2 SM831148 2. Processes and functions Fig. 1 (THERMO. OFF) (THERMO. ON) ROOM TEMP. THERMO. ON 5 MINUTES MORE THAN5 MINUTES 3 MINUTES SET TEMP COMPRESSOR OUTDOOR FAN (H OR M) INDOOR FAN OFF OFF OFF OFF 1 1. Refer to 2-4 Outdoor Fan Speed Control MORE THAN3 MINUTES MORE THAN5 MINUTES ON...
Page 110 - The indoor unit fs coil temperature is taken from sensor; OFF; . When the temperature at sensor
1 2 3 4 5 6 II-4 SM831148 2. Processes and functions Fig. 3 92 88 81 77 50 SETFANSPEED AUTO OR H M L LL LL/OFF LL L L L LL LL/OFF LL L M M LL LL/OFF LL L M H MAX. 6 MINUTES “STANDBY”INDICATOR INDOOR UNIT COIL TEMP. E2 ( ° F) LL= Very low speedL= Low speed M= Medium speedH= High speed “STANDBY” APPEA...
Page 111 - Chart Explanations and notes; Chart Explanations and notes
II-5 SM831148 1 2 3 4 5 6 2. Processes and functions Fig. 4 INDOOR FAN SPEED L H M M H 1923_M_S ROOM TEMP. (deg) SET TEMP. +3 +2 +1 HM : High: Middle L : Low Chart Explanations and notes When the fan speed changes, it keeps the speed step for at least 3 minutes, even if thetemperature changes to ano...
Page 112 - -4 Control Functions; Discharge temperature release control
1 2 3 4 5 6 II-6 SM831148 2. Processes and functions 124 142 2-4 Control Functions Electronic control valve controlOpening of the electronic control valve is controlled sothat the appropriate operating conditions are maintained,based on the signal from each sensor (dischargetemperature [TD], intake ...
Page 113 - Overcurrent protection control; (1) If the overcurrent protection circuit detects; Current release value shift control; (1) This control is intended to improve compressor; Heating high-load control; the thermostat turns OFF.
II-7 SM831148 1 2 3 4 5 6 2. Processes and functions 36 (30, 36, 48 types) Overcurrent protection control (1) If the overcurrent protection circuit detects abnormal current, the compressor is stopped. (Errorcount = 1.) The compressor then restarts after 3minutes. (2) If compressor start/stop is repe...
Page 114 - Defrost control; detected continuously for 20 seconds.
1 2 3 4 5 6 II-8 SM831148 2. Processes and functions 1 ••••• 2 3 Defrost control Defrost sequence Heating operation (25-minute mask) Frost detection Defrost start (reverse cycle defrost) Defrost in progress Defrost cancel Start-up operation Operating frequency: 61.8 HzOutdoor unit fan: OFFElectronic...
Page 115 - -5 Outdoor Unit Control PCB
II-9 SM831148 1 2 3 4 5 6 2. Processes and functions Fan motor plug (CN004) EEPROM IC MDC Heat exchanger temperature (C2) sensor Heat exchanger temperature (C1) sensor Suction temperature (TS) sensor Outdoor air temperature (TO) sensor Compressor discharge temperature (TD) sensor Refrigerant recover...
Page 117 - Outdoor unit control PCB; Example of wiring; Quiet mode; Table 1. Method of System Address Setting
II-11 SM831148 1 2 3 4 5 6 2. Processes and functions 3P plug (black): Terminal plug for the communications line• At the time of shipment from the factor y, the shor t-circuiting socket (2P, black) is installed between pins 1 and 2 on the terminal plug (terminal = yes). • When central control is use...
Page 121 - • Schematic Diagram
III-3 SM831148 3. Electrical data 1 2 3 4 5 6 4-Way Air Discharge Semi-concealed Type : XH2672R/XH3672R/XH4272R • Schematic Diagram
Page 128 - Wall Mounted Type : KH2672R
1 2 3 4 5 6 III-10 SM831148 3. Electrical data Wall Mounted Type : KH2672R
Page 132 - Wall Mounted Type : KHH2672R; • Electr
1 2 3 4 5 6 III-14 SM831148 3. Electrical data Wall Mounted Type : KHH2672R • Electr ic Wir ing Diag ra m
Page 134 - • Electric Wiring Diagram
1 2 3 4 5 6 III-16 SM831148 3. Electrical data 3-2 Outdoor Units CH2672R • Electric Wiring Diagram
Page 147 - Service procedures; SERVICE PROCEDURES
IV-1 SM831148 4. Service procedures 1 2 3 4 5 6 4. SERVICE PROCEDURES 4-1. Meaning of Alarm Messages ......................................................................................... IV-24-2. Symptoms and Parts to Inspect .........................................................................
Page 148 - Continued; Possible cause of malfunction; (1) Contents of remote controller switch alarm display
1 2 3 4 5 6 IV-2 SM831148 4. Service procedures Remote controller isdetecting error signal from indoor unit E01 E02 E10 E11 E14 E03 E08 E09 E04 E05 E06 E07 E15 E12 E16 E20 E17 E18 E31 L01 L02 L03 L04 L07 L08 L09 L10 L11 L13 Indoor unit is detecting error signal from remote controller (and system con...
Page 150 - (2) LED Indicator Messages on Outdoor Control PCB
1 2 3 4 5 6 IV-4 SM831148 4. Service procedures (2) LED Indicator Messages on Outdoor Control PCB Power ON sequence 1. No communication from indoor units in system 2. Communication received from 1 or more indoor units in system 3. Regular communication OK (Capacity and unit quantity match) If it is ...
Page 154 - Input power detection circuit trouble
1 2 3 4 5 6 IV-8 SM831148 4. Service procedures No No No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes [Alarm “P29”](MDC trouble) (1) Input power detection circuit trouble Compressor does not run. Breakdown Motor current detection circuit trouble Is power OK? Correct power line. Is current d...
Page 155 - IGBT short-circuit protection on inverter control (IPDU) PCB
IV-9 SM831148 4. Service procedures 1 2 3 4 5 6 No No No No No No No Yes Yes Yes Yes Yes Yes Yes Replace outdoor unit control PCB. (2) [Alarm “P26”] HIC PCB trouble) IGBT short-circuit protection on inverter control (IPDU) PCB Is power OK? Correct power line. Are circuit wiring, connector connection...
Page 156 - Resistance
1 2 3 4 5 6 IV-10 SM831148 4. Service procedures HIC + Between terminals Resistance HIC + HIC + HIC + HIC – HIC – HIC – HIC – U V W U V W Resistance 200 k Ω or more 300 k Ω or more 300 k Ω or more 300 k Ω or more 200 k Ω or more 200 k Ω or more 200 k Ω or more No Yes Replace outdoor unit control PCB...
Page 157 - Outdoor unit fan motor drive circuit trouble
IV-11 SM831148 4. Service procedures 1 2 3 4 5 6 No No No No Yes Yes Yes Yes (4) [Alarm "P22"] Outdoor unit fan motor drive circuit trouble Are connectors CN003 and CN004 connected correctly to the outdoor unit control PCB? Correct the connector connections. Disconnect connectors CN003 and C...
Page 158 - Sensor trouble
1 2 3 4 5 6 IV-12 SM831148 4. Service procedures No No Yes Yes Check the outdoor unit control PCB. Replace if PCB has failed. Sensor trouble (5) [Alarms “F04,” “F06,” “F07,” “F08,” “F12”] Are connectors CN020, 021, 022, 023, and 024 (TD, TO, C1, C2, and TS sensors) connected correctly to the outdoor...
Page 159 - Sensor installation; Sensor Temperature Correlation Table; (1) Press and hold the button and button simultaneously
IV-13 SM831148 4. Service procedures 1 2 3 4 5 6 Sensor installation Sensor Sensor type Sensor Sensor type s s e r d d a s s e r d d a n o i t a c o l 00 Room temp. 05 – (temp. used for control)* 01 Remote controller temp. 06 Discharge temp. Indoor unit 02 Indoor intake temp. 07 – 03 Indoor heat exc...
Page 160 - Check Pin
1 2 3 4 5 6 IV-14 SM831148 4. Service procedures Check Pin Short-circuit the cooling check pin (or heating check pin) on the outdoor unit control PCB to perform the controldescribed below. 1. Thermistor checks The checks listed below are performed for 1 second each, in order from the top down. The r...
Page 161 - Outdoor unit maintenance remote control; OUTDOOR UNIT MAINTENANCE REMOTE CONTROL
1 2 3 4 5 6 V-1 SM831148 5. Outdoor unit maintenance remote control 5. OUTDOOR UNIT MAINTENANCE REMOTE CONTROL 5-1. Overview ......................................................................................................................... V-25-2. Functions ......................................
Page 163 - -3. Normal Display Operations and Functions; Normal display functions; Displays the overall system status for that refrigerant system.; button can be used to start and stop all the indoor units.
1 2 3 4 5 6 V-3 SM831148 5. Outdoor unit maintenance remote control Remote controller Assy Special service checker wiring Relay connector (2P, white) PCB connector (3P, blue) RC (3P, blue) Outdoorunit PCB 5-3. Normal Display Operations and Functions Normal display functions • Connect the special ser...
Page 164 - Use the temperature setting
1 2 3 4 5 6 V-4 SM831148 5. Outdoor unit maintenance remote control Display (functions) • Use the temperature setting and buttons to change the item code. s k r a m e R s t n e t n o c y a l p s i D e d o c m e t I 00 (1) s u t a t s l a i t i n i t A l a m r o n n e h w F F O : ) e d o c ( s t n e ...
Page 165 - -segment, 4-digit display for remote controller timer display; button switches the display immediately to
1 2 3 4 5 6 V-5 SM831148 5. Outdoor unit maintenance remote control *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. — — — — — — — — 1 7 1 2 1 7 2 8 1 3 1 3 8 9 1 4 1 4 9 5 ...
Page 166 - the button and select the indoor unit to monitor.
1 2 3 4 5 6 V-6 SM831148 5. Outdoor unit maintenance remote control 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 mod...
Page 167 - are displayed alternately.
1 2 3 4 5 6 V-7 SM831148 5. Outdoor unit maintenance remote control 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...
Page 168 - List of Item Codes
1 2 3 4 5 6 V-8 SM831148 5. Outdoor unit maintenance remote control List of Item Codes r e t e m a r a P e d o c m e t I 01 Control system schedule 02 Control system schedule 03 Control system schedule 04 Snowfall sensor operatio n 0 = No sensor, control performed 1 = No sensor, control not performe...
Page 169 - ti
1 2 3 4 5 6 V-9 SM831148 5. Outdoor unit maintenance remote control Setting mode 2 <Operating procedure> (1) Press and hold the button, button, and button simultaneously for 4 seconds or longer. (2) Use the temperature setting and buttons to change the item code. The item codes and setting dat...
Page 172 - Liquid tube
1 2 3 4 5 6 VI-2 SM831148 6. Test run 6. TEST RUN 6-1. Preparing for Test Run Before attempting to start the air conditioner,check the following: (1) All loose matter is removed from the cabinet espe- cially steel filings, bits of wire, and clips. (2) The control wiring is correctly connected and al...
Page 174 - (2) Fully open the closed valves on the liquid tube and gas tube sides.; -5. Test Run Using the Remote Controller; “TEST” appears in the LCD display during the test run.; Indoor unit control PCB
1 2 3 4 5 6 VI-4 SM831148 6. Test run 6-4. Items to Check Before the Test Run (1) Turn the breaker ON at least 12 hours in advance in order to energize the crank case heater. (2) Fully open the closed valves on the liquid tube and gas tube sides. 6-5. Test Run Using the Remote Controller (1) Press a...
Page 176 - Basic wiring diagram 1
1 2 3 4 5 6 VI-6 SM831148 6. Test run 6-8. Examples of Wiring Diagrams Basic wiring diagram 1 Single-type system Be careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.) 1 2 1 2 0 L2 U1 RC U2 L1 U2 U1 G 1 2 System address rotary switch(Set to “0” at the time of shi...
Page 177 - Basic wiring diagram 2; Group control (when a central control device is not used)
VI-7 SM831148 1 2 3 4 5 6 6. Test run 1 2 1 2 L2 U1 RC U2 L1 U2 U1 G 1 2 1 2 L2 U1 RC U2 L1 U2 U1 G 1 2 System address rotary switch(Set to “ 0 ” at the time of shipment.) Outdoor unit Indoor unit Wired remotecontroller WHT BLK (Optional) Remote controller wiring(Field supply) System address rotary ...
Page 178 - Setting the outdoor unit system addresses; ON; System address 10s digit; Automatic address setting using the remote controller
1 2 3 4 5 6 VI-8 SM831148 6. Test run Setting the outdoor unit system addresses For basic wiring diagram 2 (Set the system addresses: 1, 2, 3...) ON 1 2 0 System address rotary switch(Set to “0” at time of shipment) System address rotary switch System address DIP switch OFF ON 10s 20s 3 – 5HP Outdoo...
Page 179 - Main-sub remote controller control; Control using 2 remote controller switches
VI-9 SM831148 1 2 3 4 5 6 6. Test run Indicating (marking) the indoor and outdoor unit combination number Indicate (mark) the number after automatic address setting is completed. (1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that the ...
