Page 2 - Please Read Before Starting; Important
SM830043 When Transporting …………………………………………………………………… Be careful when picking up and moving the indoor andoutdoor units. Get a partner to help, and bend your kneeswhen lifting to reduce strain on your back. Sharp edges orthin aluminum fins on the air conditioner can cut yourfingers. When Installing ...
Page 5 - WHAT IS IN THIS MANUAL; diagnostic chapter to help you find; HOW TO USE THIS MANUAL; You can use this manual both as a
– 5 – SM830043 WHAT IS IN THIS MANUAL Introduction: Read Me First! This manual will help you understand and service the air conditioner. To help you find the information youneed, we have divided it into 5 main sections. Each section is divided into chapters with charts, tables andexplanations to hel...
Page 8 - Indoor air temperature 27; -1 Unit Specifications
– 8 – SM830043 1. Specifications 1 MODEL No. Indoor Unit S P W - T 2 5 3 G 5 6 S P W - T 2 5 3 G S 5 6 Outdoor Unit S P W - C 2 5 3 G 5 , C 2 5 3 G 5 / M POWER SOURCE 220 - 230 - 240 V / 1 Phase / 50 Hz P E R F O R M A N C E Cooling Capacity kW 7.3 BTU / h 25,000 Air circulation (Hi/Me/Lo) m3 / h 1,...
Page 14 - -2 Major Component Specifications; Indoor Unit
– 14 – SM830043 1. Specifications 1 M O D E L N o . S P W - T 2 5 3 G 5 6 S P W - T 2 5 3 G S 5 6 S o u r c e 2 2 0 - 2 3 0 - 2 4 0 V / 1 p h a s e / 5 0 H z R e m o t e C o n t r o l l e r ( A c c e s s o r y ) R C S - T 2 5 1 G R C S - 5 P S 3 E C o n t r o l l e r P . C . B . A s s ’ y C R - X 3 ...
Page 18 - Outdoor Unit
– 18 – SM830043 1. Specifications 1 1-2 Major Component Specifications (B) Outdoor Unit Model No. SPW-C253G5 SPW-C303G5 SPW-C363G5 SPW-C253G5/M SPW-C303G5/M SPW-C363G5/M Source 220 - 230 - 240 V / 1 phase / 50 Hz Compressor Rotary (Hermetic) Model ... Code No. C - R221H5V C - R240H5W Nominal output ...
Page 21 - -3 Other Component Specifications
– 21 – SM830043 1 1. Specifications MODEL No. SPW-T253G56 SPW-T303G56 SPW-T363G56 SPW-T483G56 Power Transformer ATR - I75A Rated Primary AC 230 V, 50 Hz Secondary 10.6 V, 0.93 A Capacity 9.86 VAC Coil resistance Ω WHT – WHT : 101 , BRN – BRN : 0.6 (at 20 ° C) Thermistor cut off temperature ° C 150 T...
Page 26 - -5 Refrigerant Flow Diagram
– 26 – SM830043 1. Specifications 1 Indoor Unit : SPW-T363GS56 Outdoor Unit : SPW-C363G5, SPW-C363G5/M SPW-T363G56 SPW-C363G8, SPW-C363G8/M Fig. 5-1 O. D.19.05 mm(3/4") Evaporator Capillary O. D.9.52 mm(3/8") Condenser HP High pressure switch Compressor Accumulator Capillary Sub-condenser Wi...
Page 29 - Processes and functions; PROCESSES AND FUNCTIONS
– 29 – 2 2. Processes and functions SM830043 2. PROCESSES AND FUNCTIONS 2-1 Room Temperature Control .......................................................................... 30 2-2 Freeze Prevention .......................................................................................... 31 2-3 O...
Page 30 - Room Temperature Control; Chart Summary and Explanations
– 30 – SM830043 2 2. Processes and functions 2-1 Room Temperature Control The Unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF.This process is controlled by the thermostat located in the remote control unit.The figures on this and the next pages show how each part of...
Page 31 - Freeze Prevention
– 31 – 2 2. Processes and functions SM830043 2-2 Freeze Prevention Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reducesthe efficiency of the unit, and frost buildup on the coil blocks cool air circulation from theindoor unit’s fan. Fig. 7 COMPRESSOR OUTDOOR FAN INDOO...
Page 34 - • Electric Wiring Diagram; FMI
SM830043 – 34 – 3 3. Electrical data 3-1 Indoor Unit 1 1 1 1 1 SPW-T253G56, SPW-T363G56, SPW-T483G56 Connector 8P(WHT) 3 1 3 17 5 3 15 12 3 4 5 6 7 8 1 S P 23 45678 1 To Outdoor Unit Power Supply Terminal Plate(4P) • Electric Wiring Diagram W 854-2-5268-498-00-1 (T253G56, T363G56, T483G56) 2 3 4 GRN...
Page 42 - CM
SM830043 – 42 – 3 3. Electrical data 3-2 Outdoor Unit 1 1 1 1 1 SPW-C253G5SPW-C253G5/M CM FM C1 C2 YEL WHT GRY BRN PNK 4 5 4 5 2 3 2 3 1 1 Connector 6P (WHT) Connector 2P (WHT) 63PH 31 32 13 14 T W S V R U A B OLR P S EarthTerminal C R S GRN/YEL GRN/YEL GRN/YEL 52C 5 7 8 1 3 Relay 1 2 1 2 6 2 4 1Y P...
Page 43 - • Schematic Diagram
– 43 – SM830043 3 3. Electrical data 1 2 1Y 52C 4 1 2 N L S V R U 1Y C1 63PH C2 52C OLR 23S FM CM L H C 4 5 1 2 3 W T 52C • Schematic Diagram S 854-2-5268-461-00-1 (C253G5) Symbols Description CM FM 52C 63PH 23S C1, 2 OLR 1Y Compressor motor Fan Motor Compressor Motor Magnetic Contactor High Pressur...
Page 55 - Service procedures; SERVICE PROCEDURES; the outdoor temperature falls below 25.5
SM830043 – 55 – 4 4. Service procedures 4. SERVICE PROCEDURES 4-1 Troubleshooting ............................................................................................. 56 (1) Check before and after Troubleshooting ................................................ 56(2) Air conditioner does no...
Page 56 - Trobleshooting; Check before and after Troubleshooting; Check that voltage is within the specified range (; . Check the lead wires and connectors in indoor and outdoor units.; Check that the sheath of lead wires is not damaged.; Reference; Single-phase outdoor unit
SM830043 – 56 – 4 4. Service procedures 4-1 Trobleshooting (1) Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems, so you shouldcheck these areas first. Problems here can cause false results in some of the other tests,and so should be corrected...
Page 57 - • There is a possibility of ground fault.
SM830043 – 57 – 4 4. Service procedures (2) Air conditioner does not operate 1 1 1 1 1 Circuit breaker trips (or fuse blows). (a) When the circuit breaker is set to ON, it is tripped soon. • There is a possibility of ground fault. • Check insulation resistance. If resistance value is 1M Ω or less, i...
Page 58 - • There is a possibility of short circuit.; Neither indoor unit nor outdoor unit runs.; Power is not supplied
SM830043 – 58 – 4 4. Service procedures (b) Circuit breaker trips in several minutes after turning the air conditioner on. • There is a possibility of short circuit. 2 2 2 2 2 Neither indoor unit nor outdoor unit runs. A. Power is not supplied 0615_X_S • Check power supply. Is power being supplied t...
Page 59 - Check “Operation selector” switch in the indoor unit.
SM830043 – 59 – 4 4. Service procedures C. Check “Operation selector” switch in the indoor unit. : In case of wireless remote control unit (GS type) D. Check compressor motor protectors. a) High pressure switch (63PH) b) Compressor motor overcurrent relay (51C) 0618_X_S • Check high pressure switch....
Page 60 - Check indoor fan motor thermal protector (49FMI)
SM830043 – 60 – 4 4. Service procedures E. Check. auxiliary relay. (1Y or 2Y) 0620_X_S • Check coil resistance of auxiliary relay. (1Y or 2Y) F. Check indoor fan motor thermal protector (49FMI) • Disconnect the socket from 9P (WHT) connector. • Check the continuity between No. 8 and No.9 poles of th...
Page 61 - Check COOL/FAN selector switch in the remote control unit.; YES; Outdoor unit is abnormal.
SM830043 – 61 – 4 4. Service procedures (3) Outdoor unit does not run. A. Check COOL/FAN selector switch in the remote control unit. 0623_X_S • Is COOL/FAN selector switch set to COOL ? NO Set to COOL. B. Check set temperature. 0624_X_S Try to lower settemperature by Temperaturesetting button “COOLE...
Page 62 - Check compressor motor thermal protector (49C)
SM830043 – 62 – 4 4. Service procedures b) Check compressor motor thermal protector (49C) 0628_X_S • Check voltage between terminals No.2 and No.4 at terminal plate. • Check P.C.B. Ass’y. No voltage appears. P.C.B. Ass’y is defective. D. Check indoor unit P.C.B. 0626_X_S Is temperature of compressor...
Page 63 - • Check fan motor capacitor.
SM830043 – 63 – 4 4. Service procedures (4) Indoor unit does not run. (Indoor fan and louver motor do not run. 0630_X_S P.C.B. Ass’y is defective. (5) Some part does not operate. (1) Indoor fan does not run. • Check resistance of fan motor winding. • Check fan motor capacitor. OK Relay RY1 or RY2 on...
Page 64 - • Check fan motor capacitor; Compressor does not run.
SM830043 – 64 – 4 4. Service procedures (6) Outdoor fan does not run. • Check resistance of fan motor winding. • Check fan motor capacitor OK • Check continuity between terminals on the compressor motor magnetic contactor. • Check fan rotation. Rotate the fan gently once or twice by hand. 0633_X_S •...
Page 66 - • The set temperature is too low.
SM830043 – 66 – 4 4. Service procedures (10) Excessive cooling. • The set temperature is too low. • Is the remote control unit installed at a place where it can detect the room temperature properly ? 0637_X_S Set the temperature to higher value using temperature setting button of the remote control ...
Page 67 - Neither outdoor fan nor compressor runs.; -3 Operation of Major Electrical Parts
SM830043 – 67 – 4 4. Service procedures 4-2 A Sensor is Defective. 1 1 1 1 1 Indoor (heat exchanger) coil temp. Sensor is defective. (a) Open (=No continuity in sensor) Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minutes when sensor opens. (b) Short “Freeze Prevention” does not...
Page 68 - Checking the Electrical Components; Measurement of Insulation; Power Supply Wires
SM830043 – 68 – 4 4. Service procedures 4-4 Checking the Electrical Components (1) Measurement of Insulation Resistance • The electrical insulation is acceptable when the resistance exceeds 1 M Ω . 1 Power Supply Wires Clamp the earthed wire of the Power Supply wireswith a lead clip of the insulatio...
Page 69 - Disconnect the connector which leads to the indoor fan motor (FMI).
SM830043 – 69 – 4 4. Service procedures (2) Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want tocheck the protective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 46. • Normality of the protective ...
Page 70 - Checking the Electrical Parts; Primary 220-240 V Measure the resistance between two WHT lead wire; NOTE
SM830043 – 70 – 4 4. Service procedures Fig. 47 Multimeter Fan motorCapacitor 0643_X_S (3) Checking the Electrical Parts 1 Power transformer (TR1) ................. Indoor unit *Measure the coil resistance. • Primary 220-240 V ; Measure the resistance between two WHT lead wire terminals of socket co...
Page 71 - Coil sensor
SM830043 – 71 – 4 4. Service procedures 5 Fuse on indoor P.C.B. Ass’y• Remove the P.C.B. Ass’y from the electrical component box. Then pull out thefuse from the P.C.B. Ass’y. (Fig. 48) • The check for continuity of the fuse by using the multimeter. (Fig. 49)Having continuity is acceptable. (4) Therm...