technical & service manual split system air conditioner
Contents
1. 24 7 3 Recommended Wire Length and Diameter 25 8 FUNCTION 8 1 Room Temperature Control Uu aee e 26 0 2 Dry ODeralolt use iei 27 8 3 Freze uide M e EmPm 27 9 TROUBLESHOOTING 9 1 Check before and after troubleshooting 28 9 2 Air conditioner does not operate 29 9 3 Some part of air conditioner does not operate 33 9 4 Air conditioner operates but abnormalities are observed 35 10 CHECKING ELECTRICAL COMPONENTS 10 1 Measurement of Insulation Resistance sse enne eret tennr nnne nnne nenne 36 10 2 Checking Continuity of Fuse on PCB ASS 37 10 3 Checking Motor CapacltOE iiec ere cie aeta datse 37 11 MAINTENANCE 11 1 Change of Address of Remote Control Unit in Indoor Unit 38 APPENDIX uu uyum M LM pM ELM as 39 1 OPE2. 30 INSTALLATION INSTRUCTIONS Wall mounted Type Ue 2 15 cm min 5 SS 5 7 min min INDOOR UNIT 7 x Front View bes Fig 1 INDOOR Tubing length L UNIT Elevation OUTDOOR UL H UNIT Fig 2a CAUTION Indoor Unit For stable operation of the air conditioner do not install wall mounted type indoor units less than 1 5m from floor level Wall Minimum height from floor level 1 5m mE Um Floor level Fig 2b Required Amount of Additional Refrigerant g m 20 Limit of Elevation Difference H m K186ST 5 K256ST 7 5 If total tubing length becomes 5 or 7 5 to 30m max charge additional refrigerant R22 by 20 g m or 25 g m No additional charge of compressor oil is necessary 30 25 7 7 22 Outdoor Unit AVOID heat sources exhaust fans etc Fig 3 damp humid or uneven locations DO choose a place as cool as possible choose a place that is well ventilated allow enough room around the unit for air intake exhaust and possible maintenance Figs 4a and 4b provide a solid base concrete block 10 x 40 cm beams or equal a minimum of 10 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life Fig 4c use lug bolts or equal to bolt down unit reducing vibration an
3. Axis air velocity 30 g Indoor Unit SAP K256ST Room air temp 27 C Fan speed High Horizontal distance m 0 1 2 3 4 5 6 7 8 9 NS M _ H E E 7 gt E 1 L 9 A N s TX N o gt N A d N S Due N lt gt 3 x 1 E i 4 yA N Flap angle O Axis air velocity 0 Flap angle 30 Axis air velocity 30 17 6 ELECTRICAL DATA 6 1 Electrical Characteristics Indoor Unit SAP K186ST Outdoor Unit SAP C186ST Indoor Unit Outdoor Unit Complete Unit 220 240V Single phase Rating Conditions Running Amps Pawar Input WN Full Load Conditions Running Amps 0 17 017 017 065 0 66 0 66 12 60 10 29 9 93 13 42 11 12 10 76 Power Input KW Rating Conditions Indoor Air Temperature 27 CD B 19 C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 D B 23 W B Outdoor Air Temperature 48 D B Indoor Unit SAP K256ST Outdoor Unit SAP C256ST Indoor Unit Outdoor Unit Complete Unit 220 240V Single phase 50Hz Rating Conditions Running Amps 0 22 0 22 0 22 0 67 0 68 0 69 11 66 11 78 12 40 12 55 12 68 13 31 Power Input kW 0 045 0 045 0 045 0 147 0 155 0 162 2 446 2 496 2 587 2 638 2 696
4. 5 5 mm 8mm 14 mm 2 mm Capacity 18 32 48 7T 30 30A WIRING SYSTEM DIAGRAM Be sure to comply with Nmum local codes on running the For 186ST model wire from the indoor unit to INDOOR UNIT OUTDOOR UNIT the outdoor unit size of TERMINAL e TERMINAL wire and wiring method n D etc Each wire must be firmly D GROUNDING LINE D connected D No wire should be allowed _ to touch refrigerant tubing pue LY c the compressor or any moving part ptt me POWER SUPPLY 1 PHASE To avoid the risk of electric 220 240VAG WARNING shock each air conditioner unit must be grounded For 256ST model 1 PHASE Be sure to connect the 220 240VAC 50Hz POWER SUPPLY CAUTION power supply line to the INDOOR UNIT A UTDOORUNIT outdoor unit as shown in TERMINAL TERMINAL the wiring diagram D D The indoor unit draws its 2 N power from the outdoor 3 i GROUNDING LINE unit 1 z 2 3 y TEM i 25 8 FUNCTION 8 1 Room Temperature Control Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit The room temperature and other information is transm
5. never try to bend it into a narrow curve because it can cause the tube to break or crack 15 5 PERFORMANCE DATA 5 1 Performance charts Indoor Unit SAP K186ST Indoor Unit SAP K256ST Outdoor Unit SAP C186ST Outdoor Unit SAP C256ST E Cooling Characteristics IB Cooling Characteristics 22 Indoor inlet air D B temp C Operating current A Operating current A 25 30 35 40 45 50 25 30 35 40 45 50 Outdoor inlet air D B temp C Outdoor inlet air D B temp C or inlet air temp C Low pressure at wide tube serveice valve MPa kgf cm2G High pressure at wide tube serveice valve MPa kgf cm2G 25 30 35 40 45 50 25 30 35 40 45 50 Outdoor inlet air D B temp C Outdoor inlet air D B temp C NOTE Points of Rating condition Black dots in above charts indicate the following rating conditions Cooling Indoor air temperature 27 C D B 19 C W B Outdoor air temperature 35 C D B 24 C W B 16 5 2 Air Throw Distance Chart Indoor Unit SAP K186ST Room air temp 27 C Fan speed High Horizontal distance m 9 EE 8 s o 2 gt 2 S w x lt X N N 4 Flap angle O Axis air velocity 0 angle 30
6. 2 794 Full Load Conditions Running Amps Al o 22 0 22 0 22 0 67 0 68 0 69 17 31 14 80 17 42 18 20 15 70 18 33 Power Input kW 0 045 0 045 0 045 0 147 0 155 0 162 3 356 3 247 3 711 3 548 3 447 3 918 Rating Conditions Indoor Air Temperature 27 CD B 19 C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 D B 23 W B Outdoor Air Temperature 48 C D B 18 6 2 Electric Wiring Diagrams Indoor Unit SAP K186ST To avoid electrical shock hazard be sure to NE disconnect power before checking servicing and or cleaning any electrical parts EVAPORATOR TERMINAL BASE gt lt m n 4 LAMP 9P WHT gt N e lt a lt l e FLAP MOTOR CONTROLLER DCM 6P BLU RooM COIL HH 4P BLK BLK EH FAN MOTOR COIL THERMISTOR 8FA2 5250 24800 0 19 Indoor Unit SAP K256ST EVAPORATOR D 25 2 m m 7 O CONNECTOR FLAP MOTOR FAN To avoid electrical shock hazard be sure to ANa disconnect power before checking servicing and or cleaning any electrical parts TERMINAL BASE FROM OUTDOOR UNIT LAMP 9P WHT IND LAMP ASSY CONTROLLER 20 ROOM THERMISTOR ROOM CO IL 4P BLK HE BLK na COIL THERMISTOR 8FA2 5250 26800 0 Outdoor Unit SAP C186ST To avoid electrical shock hazard be sure to SAP C256ST WARNING discon
7. SAP C186M 415 88 5 8 R22 SAP C256M Narrow tube service valve 6 35 1 4 R22 Wide tube service valve JL AIR DISCHARGE a 3WVINI BIV LI 4 REFRIGERANT FLOW DIAGRAM Indoor Unit SAP K186ST Outdoor Unit SAP C186ST Indoor Unit Outdoor Unit Wide tube service Compressor Wide tube valve Accumulator 1 s db O D 012 7 mm 1 2 i 5 5 8 8 Narrow tube service i Narrow tube valve MILLE OD MANNI i 96 35 mm Capillary tube 1 4 Indoor Unit SAP K256ST Outdoor Unit SAP C256ST Indoor Unit Outdoor Unit i Wide tube service Compressor i Wide tube valve Accumulator i PK db 1 015 88 mm 5 8 5 5 1 E c i 8 N Narrow tube i service Narrow tube valve OD Www J I 06 35 mm Capillary tube 1 4 Insulation of Refrigerant Tubing IMPORTANT Because capillary tubing is used in the outdoor unit both the Insulation wide and narrow tubes of this air conditioner become cold To N Thickness Thickness prevent fies loss and wet floors due to dripping of f Minorum Min amm condensation both tubes must be well insulated with a proper insulation material The thickness of the insulation should be a min 8mm Narrow tube Wide tub After a tube has been insulated
8. Electrical Rating Available voltage range Running amperes Power input Power factor C O P Compressor locked rotor amperes Cooling 198 264 12 4 12 6 12 8 2 600 2 660 2 730 95 92 89 2 71 2 65 2 58 z gt 5 Controls Temperature control Control unit Wireless remote controller Timer 24 hours ON or OFF 1 hour OFF Fan speeds Indoor Outdoor 3 and Auto 1 Hi Airflow direction Indoor Horizontal Manual Vertical Auto Washable Anti Mold Rotary Hermetic R22 1 550 Capillary tube Microprocessor thermister Air filter Compressor Refrigerant Amount charged at shipment Refrigerant control Operation sound Indoor Hi Outdoor Hi Refrigerant tubing connections Max allowable tubing length at shipment Refrigerant Narrow tube in 6 35 1 4 o o gt gt N Flare type s tube diameter Wide tube mm in 15 88 5 8 Refrigerant tube kit Accessories Optional Air Clean Filter Unit dimensions 298 569 1 065 790 235 285 Package dimensions Height 302 635 Depth 379 385 Weight Net kg 13 0 56 0 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 27 D B 19 W B Outdoor air temperature 35 C D B 24 C W B 2 2 Major Component Specifications 2 2 1 Indoor Unit Indoor Unit SAP K186ST POW K96S A1 Control circuit fuse 250 V 3 15 A Remote Control Unit RCS 4MVPS4EX Type Cross
9. flow Q ty Dia and length mm Fan molor model OY No o poles Rough measure pm Nominal output 7 mM BEBE 4 Safety devices Type Thermal fuse 12 Operating temp Open Run capacitor H Flap Motor Type Stepping motor 24BYJ48 916 DC 12 V Coil resistance Ambient temp 25 C Q Each pair of terminals 200 7 DATA SUBJECT TO CHANGE WITHOUT NOTICE vac 0 Indoor Unit SAP K256ST POW K250M Al Control circuit fuse 250 V 3 15 A Remote Control Unit RCS 4MVPS4EX Type Cross flow Q ty Dia and length mm 094 L845 Fan motor model Q ty SIC 39CVL D847 2 A 1 No of poles Rough measure rpm 1305 1 8 Nominal output 47 mM BEBE Safety devices Type Internal controller Operating temp Open Run capacitor uF Flap Motor Stepping motor Aluminum plate fin Copper tube in pi m 0 285 DATA SUBJECT TO CHANGE WITHOUT NOTICE 2 2 2 Outdoor Unit Outdoor Unit SAP C186ST Coil resistance Ambient temp 20 C Q C R 1 572 C S 2 637 Safely devices Type Overload relay Operating temp Open Trip in 6 to 16 sec at 15A Run capacitor ur VA Crank case heater Fan amp Fan Motor Propeller Coil resistance Ambient temp 20 C Q WHT BRN 60 8 YEL RED 42 5 Safety devices Type Operating temp Run capacitor pF Heat Exch Coil 2 DATA SUBJECT TO CHANGE WITHOUT NOTICE Outdoor Unit SAP C256ST Rotary Hermetic Com
10. require help for a special problem contact our sales service outlet or your certified dealer for additional instructions In Case of Improper Installation The manufacturer shall in no way be responsible for improper installation or maintenance service including failure to follow the instructions in this document Special Precautions When Wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inadequate grounding can cause accidental injury or death Ground the unit following local electrical codes Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard e Install a protective leakage breaker depending on the installation location especially a damp or humid location If a leakage breaker is not installed electric shock can occar When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wa
11. RATING RANGE 1865 SAP C186ST SAP K256ST SAP C256ST Indoor Air Intake Temp Outdoor Air Intake Temp Pm Maximum 32C D B 23 C W B 48 C D B oolin d Minimum 19 C D B 14 C W B 19 C D B 2 SPECIFICATIONS 2 1 Unit Specifications Indoor Unit SAP K186ST Outdoor Unit SAP C256ST Power Source 220 240V Single phase 50Hz Voltage rating 220 230 240 V Capacity kW 5 30 Air circulation High ma m REESE Airflow direction Indoor Horizontal Manual Vertical Auto Washable Ant Moid Rotary Hermetic Refrigerant Amount charged at shipment g R22 1 200 Refrigerant control Capillary tube Operation sound Indoor Hi dB A 43 m Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wide tube mm in 12 7 1 2 Refrigerant tube kit Accessories Optional Air Clean Filter Unit dimensions 295 589 799 790 227 285 Package dimensions Height 284 650 Width 871 920 Depth 343 385 Weight Net kg 10 0 46 0 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 27 C D B 19 C W B Outdoor air temperature 35 C D B 24 C W B Indoor Unit SAP K256ST Outdoor Unit SAP C256ST Power Source 220 240 V Single phase 50Hz Voltage rating 220 230 240 V Performance Cooling Capacity kW 7 05 BTU h 24 100 Air circulation High m h Moisture removal High Liters h 3 3
12. TECHNICAL amp SERVICE MANUAL SANYO SAP K186ST SAP C186ST FILE NO SAP K256ST SAP C256ST Indoor Model No Product Code No Destination Outdoor Model No Product Code No Destination SAP K186ST 1 852 347 24 Asia Russia 50Hz SAP C186ST 1 852 347 26 Asia Russia 50Hz SAP K256ST 1 852 347 25 Asia Russia 50Hz SAP C256ST 1 852 347 27 Asia Russia 50Hz SAP K186ST SAP C186ST SAP C256ST SAP K256ST REFERENCE No SMxxxxxx Important Please Read Before Starting This air conditioning system meets strict safety and operating standards As the installer or service person itis an important part of your job to install or service the System so it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning Follow each installation or repair step exactly as shown G Observe all local state and national electrical codes G Pay close attention to all warning and caution notices given in this manual This symbol refers to a hazard or ANa unsafe practice which can result in severe personal injury or death This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage If Necessary Get Help These instructions are all you need for most installation sites and maintenance conditions If you
13. TIONER 7j 5 m ur F LIL c ON OFFS AM THAI TATA ALAANI amp 395 ON OFF O izi 1 Test run mode HIGH POWER ON OFF ir m Address setting mode msh P n 5 oP 7 has now been selected for address setting 6 Press the ON OFF operation button on the remote controller Fig 3 Check that the beep signal 1 k s received sound is heard from the second indoor FANSPEED MODE unit approximately 5 times The sound you hear ETC ee is the signal that the remote controller address has been changed 7 Finally press the remote controller ACL reset e button to cancel the blinking oP 7 display a Fig 3 Changing of the second remote controller address is 4 v 22 i now completed Oa ACL Adress Reset button 38 Fig 3 APPENDIX Remote Control Unit Transmitter Sensor OOOO ORL me nn LILA Cover closed Display 81639 ON OFF POWER HIGH POWER button operation button 1 HR TIMER button Temperature setting buttons TEMP FAN SPEED MODE FAN SPEED selector button MODE selector button FLAP NIGHT SETBACK FLAP button NIGHT SETBACK button ON TIMER SH ZIME _ to Advance BURON c Advance b
14. control unit is defective gt Power failure Reset breaker Wait for recovery or contact power company Check for residue buildup on Clean transmitter transmitter of remote control unit Check for residue buildup on remote control receiver on front of indoor gt unit Clean receiver C Check transformer in the indoor unit Measure resistance of primary and secondary winding TR 30 D Check fuse on the indoor PCB Ass y Check fuse on indoor PCB Ass y If fuse has been blown Replace the fuse for continuity Check operation lamp to see if light is ON Light is OFF Indoor PCB Ass y is defective E Check TIMER on the remote control unit Timer is turned ON Check to see YES Measure resistance of indoor and outdoor fan motor winding FM Measure resistance of compressor motor winding CM if is displayed on remote control 31 gt Cancel the timer mode 9 2 3 Only outdoor unit does not run A Check setting temperature Is room temperature too low Try to lower setting temperature by temperature setting button button Outdoor unit still does not run Check to see if inter unit wiring is correctly connected between indoor and outdoor unit B Check power relay
15. d noise Required space around the unit Z Z Z Z Z AP AP AP AP Z Z Z ZZ Z Air intake Min 10 cm Valve side 25 Min ji 5cm Air discharge Min 40 cm Top View Fig 4a Rear air intake WAN WAN WW M WAN N AN WAN Side air intake WN WW WN NN IN AS ANN Concrete or equal W AN Z 23 NO 2 ju fan otair 2 Z Heat source Outdoor unit Fig 3 Obstacle above 1 5 5 3 4 Air discharge Obstacle Ar Ground Side View Anchor bolts 4 pcs 7 2 Remote Control Unit Installation Position The remote control unit can be operated from either a non fixed position or a wall mounted position To ensure that the air conditioner operates correctly do not install the remote control unit in the following places In direct sunlight Behind a curtain or other place where it is covered More than 8 m away from the air conditioner In the path of the air conditioner s airstream Where it may become extremely hot or cold Where it may be subject to electrical or magnetic interference Where there is an obstacle between the remote control unit and air conditioner since a check signal is sent from the remote control unit every 5 minutes Attaching the remote control unit
16. ig 6 great extent and then gradually returns to its original position The range of deflection and deflection time differ according to the capacity of the capacitor Multimeter Ne Compressor motor capacitor Fan motor capacitor Fig 7 37 11 MAINTENANCE 11 1 Address Setting of the Remote Control Unit The address can be set in order to prevent interference between remote controllers when two indoor units are installed near each other The address is normally set to A To set a different address it is necessary to change the address on the second remote controller Once changed you cannot restore the original address setting of the air conditioner 1 Switch on the power source 2 Break the address setting tab marked A on the second remote controller to change the address Fig 1 When the tab is removed the address is automatically set to B Fig 2 3 Press and hold the remote controller HIGH POWER Fig 2 button and 1 HR TIMER button At the same time press the ACL reset button Use a thin object such as the tip of a pen to press the ACL button When this has been done oP 1 test run appears blinking in the remote controller clock display area 4 Each time the 1 HR TIMER button is pressed the display changes as shown below Press this button once to change the display to oP 7 address setting Fig 3 ACL button AIR CONDI
17. in outdoor unit Check voltage between terminals No 2 and No 3 at terminal plate AC 220 240 V Check coil terminal voltage between OK terminals No 5 and No 6 at power relay AC 220 240 V No voltage appears Check indoor PCB Ass y 32 Replace the power relay 9 3 Some part of air conditioner does not operate 9 3 1 Only indoor fan does not run Fan cannot be turned Check fan rotation Turn fan gently once or twice by hand Measure resistance of indoor fan motor winding Check fan casing foreign matter on inside Remove foreign matter or repair Fan motor burnout or foreign matter in bearings Repair or replace When fan speed is changed does applied voltage between lead wires BRN and WHT change as well Check fan motor capacitor 9 3 2 Only outdoor fan does not run Fan cannot Check fan rotation be turned Turn fan gently once or twice by hand Measure resistance of outdoor fan motor winding Check fan motor capacitor 33 Check fan casing foreign matter on inside PCB Ass y is defective Remove foreign matter or repair Fan motor burnout or foreign matter in bearings Repair or replace 9 3 3 Only compressor does not run Check compressor moter capacitor Overload relay is wor
18. itted every 3 minutes by the remote control unit to the controller in the indoor unit Signal from remote control unit 3 minutes 3 minutes 3 minutes minutes minutes 3 minutes minutes Thermo Thermo Thermo PU Thermo Thermo Thermo OFF ON OFF ON ON OFF TH C MU settemp T m 5 minutes 5 minutes 3 minutes Room temp Indoor fan Set speed The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least 3 minutes To protect the compressor from stalling out when trying to start against the high side refrigerant pressure the control circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation 0 Thermo ON When the room temperature is above T 1 C T C is set temperature Compressor ON Thermo OFF When the room temperature is equal to or below set temperature T C Compressor gt OFF 26 8 2 Dry Operation Dehumidification Dry operation uses the ability of the cooling cycle to remove moisture from the air but by running at low level to dehumidify without greatly reducing the room temperature The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room temperature Room temp Coo
19. king YES Measure resistance of Temperature of compressor compressor motor winding is abnormally high YES YES Refrigerant gas shortage Charge refrigerant gas R22 Measure Power suppl voltage RE No Rotor may be locked up The voltage is too low 9 3 4 Only flap motor does not run Measure resistance of flap motor winding and connector 34 9 4 Air conditioner operates but abnormalities are observed 9 4 1 Poor cooling or heating e Check position of remote control unit YES Chande position remote Cool air from air conditioner reaches gt P Un position directly I Wide and narrow tubes between Insulate both wide and narrow indoor unit and outdoor unit are gt tubes separately and then insulated tape together YES Temperature difference e Measure temperature of suction and is small Possibility of Charge refrigerant discharge air of air conditioner gas shortage gas R22 Temperature difference between suction and discharge air is large enough approx 10 deg or more Check for clogging of air filter gt Clean filter Air filter is clogged YES i Fan speed is set to LOW E ES Reduce cooling load or e Review cooling load estimate replace the air conditioner if performance of air conditioner is gt with larger capacity nor
20. l Nominal output 1 800 Compressor oil Amount cc ATMOS 56 or SUNISO 4950 1 100 Coil resistance Ambient temp 20 C Q C R 1 04 5 C S 235x596 Safety devices Type Overload relay EE Operating temp Open Operating amp Ambienttemp 25 O SSCS Run capacitor uF VAC Cake C C C Fan amp Fan Motor Coil resistance Ambient temp 20 C Q WHT BRN 60 8 WHT PNK 42 5 RED Safety devices Type Thermal protector Operating temp Open 13525 Run capacitor m VAC 440 Coi Rows Fin pitch mm Face ares DATA SUBJECT TO CHANGE WITHOUT NOTICE PHAGOX3CS 85204526357 2 3 Other Component Specifications INDOOR UNIT SAP K186ST Thermistor Coil Room sensor DTN TKS342Y Coil Room Resistance ka Coil 0 C 15 0 2 Room 25 5 0 3 SAP K256ST Thermistor Goil senson EBM DIEST Coil Resistance ku 0C 15 04 5 Room 25 5 0 4 OUTDOOR UNIT 186 2565 Power Relay PR EL1U Coil rating AC 200 240V 50 60Hz Contact rating AC 277V 30A 11 3 DIMENSIONAL DATA Indoor Unit SAP K186ST is T S bbe gt ja ium 12 n SAP K256ST Indoor Unit ete 133 8 23 0 ie 13 Outdoor Unit SAP C186ST SAP C256ST 412 70 1 27 R22
21. l Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 3 and 4 NOTE Refer to Electric Wiring Diagram If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin 36 Ground wire Probe Insulation tester Fig 1 Terminal plate I SIS eee Clip Copper Insulation tube or tester metallic part Fig 2 E li Clip tube or metallic part Insulation tester Fig 3 From fan motor compressor and other parts 2 N Metallic A part E U JI Clip M X S O EN d Insulation tester Fig 4 10 2 Checking Continuity of Fuse on PCB Ass y Remove the PCB Ass y from the electrical component box Then pull out the fuse from the PCB Ass y Fig 5 PCB Ass Check for continuity using a multimeter as shown in d Fig 6 e Fig 5 10 3 Checking Motor Capacitor Remove the lead wires from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the dl Fuse multimeter to the maximum value The capacitor is good if the pointer bounces to a F
22. ling operation T 2 G Dry A zone Compressor Continuous operation FMI indoor fan L low speed LL very low speed intermittent ventilation Set temp T C only while the compressor is ON T 1 C Dry B zone Compressor Intermittent operation ON for 3 minutes and OFF for 9 minutes FMI indoor fan L low speed LL very low speed intermittent ventilation only while the compressor is ON Room temp 15 C Monitor zone Both the indoor and outdoor units stop Intermittent ventilation occurs by switching the indoor fan speed between L lt gt LL Dry operation does not occur when the room temperature is under 15 C which is the monitor zone When the compressor stops the indoor fan stops as well 8 3 Freeze Prevention This function prevents freezing of the indoor heat exchange coil When the compressor has been running for 10 minutes or more and the temperature of the indoor heat exchange coil falls below 1 C the control circuit stops the compressor for at least 6 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed Thermo OFF Room temp Thermo ON T 1 Set temp T C Indoor heat exch More than 6 minutes coil temp he 1 C More than 10 minutes 27 9 TROUBLESHOOTING 9 1 Check before and after troubleshooting Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect power or tur
23. ll Make sure the ceiling wall is strong enough to hold the units weight It may be necessary to construct a strong wood or metal frame to provide added support In a Room Properly insulate any tubing run inside a room to prevent sweating that can cause dripping and water damage to walls and floors In Moist or Uneven Locations Use a raised concrete pad or concrete blocks to provide a solid level foundation for the outdoor unit This prevents water damage and abnormal vibration In an Area with High Winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a Snowy Area for Heat Pump type Systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents When Connecting Refrigerant Tubing Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run When Servicing Turn the power off at the main power box mains before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced NE Ventila
24. mal 9 4 2 Excessive cooling or heating Set temperature to higher au NO value using temperature Set temperature is suitable setting buttons of the remote control unit Set temperature is saaa i Remote control unit is placed where Change position of remote control unit it can detect room temperature gt properly 35 10 CHECKING ELECTRICAL COMPONENTS 10 1 Measurement of Insulation Resistance The insulation is in good condition if the resistance exceeds 2MQ 10 1 1 Power Supply Wires Clamp the ground wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires Fig 1 Then measure the resistance between the ground wire and the other power wire Fig 1 10 1 2 Indoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 10 1 3 Outdoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 10 1 4 Measurement of Insulation Resistance for Electrica
25. n off circuit breaker before you start checking or servicing 9 1 1 Check power supply wiring Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the outdoor unit 1 PHASE For 186ST 1 PHASE For 256ST 220 240VAC 50Hz 220 240VAC 50Hz POWER SUPPLY POWER SUPPLY OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT TI TERMINAL TERMINAL TERMINAL INDOOR UNIT TERMINAL D 02 3 DF SOUNDING LINE ____ GROUNDING LINE GROUNDING LINE 500660 GOOOSO 699690 GROUNDING LINE e 9 1 2 Check inter unit wiring Check that inter unit wiring is correctly connected between indoor unit and outdoor unit 9 1 3 Check power supply Check that voltage is in specified range 10 of the rating Check that power is being supplied 9 1 4 Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 28 9 2 Air conditioner does not operate 9 2 1 Circuit breaker trips or fuse blows A When the circuit breaker is set to ON it is tripped soon Resetting is not possible There is a possibility of ground fault Check insulation resistance If resistance val
26. nect power before checking servicing and or cleaning any electrical parts TERMINAL BASE 6P TO INDOOR a lt lt CM CAPACITOR WHT BLK RED GRY RED BRN WHT d c II GRN YEL COMPRESSOR MOTOR GRN gt 8FA2 5250 25200 0 21 7 7 1 Installation Site Selection Indoor Unit WARNING To prevent abnormal heat generation and the possibility of fire don t place obstacles enclosures and grilles in front of or surrounding the air conditioner in a way that may block air flow AVOID direct sunlight nearby heat sources that may affect performance of the unit areas where leakage of flammable gas may be expected places where large amounts of oil mist exist DO select an appropriate position from which every corner of the room can be uniformly air conditioned High on a wall is best select a location that will hold the weight of the unit select a location where tubing and drain hose have the shortest run to the outside allow room for operation and maintenance as well as unrestricted air flow around the unit Fig 1 install the unit within the maximum elevation difference H above or below the outdoor unit and within a total tubing length L from the outdoor unit as detailed in Table 1 and Fig 2a Table 1 Max Allowable Tubing Length at Shipment m Limit of Tubing Length L m
27. te any enclosed areas when installing or testing the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas Confirm upon completing installation that no refrigerant gas is leaking If escaped gas comes in contact with a stove gas water heater electric room heater or other heat source it can produce dangerously toxic gas Table of Contents Page OPERATING RANGE uuu Rm 4 2 SPECIFICATIONS 2 1 Unt Specifications Tum 5 2 2 Major Component Specifications nnn anneer eenen neneneneennenerenenenene nen enennne eenen ennen eene sin nnn renti 7 2 3 Other Component Specifications eene nennen nnns nnns senes nennen 11 3 DIMENSIONAL DATA E pedi rei WINS ai ian ae 12 4 REFRIGERANT FLOW DIAGRAM n aa 15 5 PERFORMANCE DATA 5 1 Performance charts df e ette bs 16 5 2 Air Throw Distance Chart soci e 17 6 ELECTRICAL DATA 6 1 Elecitrical Characteristics narren tice eite cre ERR c ERE EXE DUE ELI EXE ALERT ER UR RH ENERO 18 6 2 Electric Wiring Diagrams i icai ione cete cast quran even Ee PEE ER E FERE Po V DER RYE RED RR asas 19 7 INSTALLATION INSTRUCTIONS 4 1 Installation Site Selection inei ber ee rede ice ae 22 7 2 Remote Control Unit Installation Position
28. to wall Before mounting the remote control unit press the ON OFF operation button at the mounting location to make sure that the air conditioner operates from that location Fig 5 The indoor unit should make a beeping sound to indicate that it has received the signal Remote control Rear side unit mount 2 Press d P p P Mounting screws Mounting screws Setin 4 x 16 included 4 x 16 included place D lt For 256 model For 186 model To prevent loss of the remote control unit you can connect the remote control unit to the mount by passing a string through the remote control unit and attachment hole Fig 5 24 7 3 Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality For field wiring requirements please refer to your local electrical codes Carefully observe these regulations when carrying out the installation Refer to the WIRING SYSTEM DIAGRAM for the meaning of A B and C in Table 2 Table 2 lists recommended wire lengths and cross section area for power supply systems Table 2 Cross Sectional A B A Power Supply Wiring Length m Fuse or Area mm B Power Line Length m Circuit Breaker Model 2 mm 3 5 mm Capacity C186 27 41 15A C Control Line Length m Fu r Cross Sectional A Power Supply Wiring Length m m Area mm a B Power Line Length m Circuit Breaker 3 5 mm
29. ue is 2MQ or less insulation is defective NO For 186ST Indoor Inter unit Outdoor Power unit wiring unit supply wiring 1 1 Circuit Power 2 x x 2 NIX breaker supply 3 x 3 xx 4 gt 4 d Ground For 256ST Indoor intercunit Outdoor Power unit unit supply wiring wiring 1 X X 1 L X Circuit j Power 2 2 N X breaker supply 3 X 3 4 5 6 7 x d4 gt a Ground Set circuit breaker to OFF D Remove both power supply wires and inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor unit Remove inter unit wires from terminal plate in indoor unit e Measure insulation resistance of indoor unit NO NO Insulation of outdoor unit is defective 29 Insulation of indoor unit is defective e Measure insulation resistance of electrical parts in outdoor unit Measure insulation resistance of electrical parts in indoor unit 9 2 2 Neither indoor nor outdoor unit runs A Power is not supplied Circuit breaker is tripped Check power supply Power is being supplied to the outdoor unit B Check remote control unit Try to run with another remote control unit First remote
30. utton OFF TIME setting 2 a setting buttons Return button ped c Return button buttons CANCEL button gt CLOCK button SENSOR 12H4b2dH SENSOR button Qac Time display selector button PFZ A 2275 ADDRESS switch ACL button Temperature display selector button 39 Unit Display and Operation Button SAP K186ST High Efficiency TIMER OPERATION ON OFF ED Remote control receiver TIMER OPERATION ON OFF lamp lamp button SAP K256ST High Efficiency TIMER OPERATION ON OFF pe TD Remote control receiver TIMER OPERATION ON OFF lamp lamp button 40 SANYO SANYO Electric Co Ltd Osaka Japan
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