Sanyo SAP-KCRV243GJH Technical & Service Manual
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Sanyo SAP-KCRV243GJH Technical & Service Manual

Sanyo SAP-KCRV243GJH Technical & Service Manual

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TECHNICAL & SERVICE MANUAL
DC INVERTER SPLIT AIR CONDITIONER
Outdoor unit
SAP-CRV243GJH
SAP-CRV243GJ
SAP-CRV303GJH
SAP-CRV303GJ
SAP-KCRV243GJH
SAP-KCRV243GJ
SAP-KCRV303GJH
SAP-KCRV303GJ
Wall Mounted Type Indoor Unit
SAP-KRV243GJH
SAP-KRV243GJ
SAP-KRV303GJH
SAP-KRV303GJ
Power Source:240V 50Hz
IMPORTANT
These air conditioners employ
new refrigerant R410A.
Pay special attention when
servicing the unit.

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Summary of Contents for Sanyo SAP-KCRV243GJH

  • Page 1 TECHNICAL & SERVICE MANUAL SAP-KCRV243GJH SAP-KCRV243GJ SAP-KCRV303GJH SAP-KCRV303GJ Power Source:240V 50Hz DC INVERTER SPLIT AIR CONDITIONER Wall Mounted Type Indoor Unit SAP-KRV243GJH SAP-KRV243GJ SAP-KRV303GJH SAP-KRV303GJ Outdoor unit IMPORTANT SAP-CRV243GJH These air conditioners employ SAP-CRV243GJ new refrigerant R410A. SAP-CRV303GJH Pay special attention when servicing the unit.

  • Page 2: Special Precautions

    Important! When Transporting Please Read Before Starting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your This air conditioning system meets strict safety and knees when lifting to reduce strain on your back.Sharp operating standards.

  • Page 3: Table Of Contents

    Table of Contents Page 1. OPERATING RANGE 2. SPECIFICATIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL DATA 4. REFRIGERANT FLOW DIAGRAM 5. PERFORMANCE DATA 5-1. Air Throw Distance Chart 6. ELECTRICAL DATA 6-1. Electrical Characteristics 7.

  • Page 4: Operating Range

    1. OPERATING RANGE Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 32˚C D.B./ 23˚C W.B. 43˚C D.B. Cooling Minimum 19˚C D.B./ 14˚C W.B. 19˚C D.B. Maximum 27˚C D.B. 24˚C D.B./ 18˚C D.B. Heating Minimum 16˚C D.B. /-15˚C W.B.

  • Page 5: Specifications

    2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit SAP-KRV243GJH Type Wall mounted type indoor unit Power Source 240V~50Hz Voltage rating 240V Cooling Heating Performance 0.6-7.9 0.8-9.6 Capacity Air circulation (Hi) Moisture removal (High) Liters/h Cooling Heating Electrical Rating 216 ~ 264 Available voltage range 12.7 Running amperes...
  • Page 6 Indoor Unit SAP-KRV243GJ Type Wall mounted type indoor unit Power Source 240V~50Hz Voltage rating 240V Cooling Performance 0.6-7.9 Capacity Air circulation (Hi) Moisture removal (High) Liters/h Cooling Electrical Rating 216~264 Available voltage range Running amperes 1950 Power input Features Microprocessor / I.C. thermostat Controls/Temperature control Control unit Wireless remote control unit...
  • Page 7 Indoor Unit SAP-KRV303GJH Type Wall mounted type indoor unit Power Source 240V~50Hz Voltage rating 240V Cooling Heating Performance 1.2-9.3 1.7-10.4 Capacity Air circulation (Hi) Moisture removal (High) Liters/h Cooling Heating Electrical Rating Available voltage range 216~264 11.3 12.4 Running amperes 2650 2920 Power input...
  • Page 8 Indoor Unit SAP-KRV303GJ Type Wall mounted type indoor unit Power Source 240V~50Hz Voltage rating 240V Cooling Performance 1.2-9.3 Capacity Air circulation (Hi) Moisture removal (High) Liters/h Cooling Electrical Rating 216~264 Available voltage range 11.3 Running amperes 2650 Power input Features Microprocessor / I.C.

  • Page 9: Major Component Specifications

    2-2. Major Component Specifications Indoor Unit SAP-KRV243GJH Control PCB POW-KMRV243GJ Part No. Microprocessor Controls 2.50V 3.15A Control circuit fuse Remote Control Unit RCS-3MVHPS4E Fan & Fan Motor Cross-flow /AC motor Type Fan/Fan motor 1... D100 Q'ty...Dia. and length KFG4X-31B6P-S...1 Fan motor model...Q'ty 4...1269 No.
  • Page 10 Indoor Unit SAP-KRV243GJ Control PCB POW-KMRV243GJ Part No. Microprocessor Controls 2.50V 3.15A Control circuit fuse Remote Control Unit RCS-3MVPS4E Fan & Fan Motor Cross-flow /AC motor Type Fan/Fan motor 1... D100 Q'ty...Dia. and length KFG4X-31B6P-S...1 Fan motor model...Q'ty No. of poles...rpm (220V, High) 4...1269 Nominal output Ω...
  • Page 11 Indoor Unit SAP-KRV303GJH Control PCB POW-KMRV243GJ Part No. Microprocessor Controls 2.50V 3.15A Control circuit fuse Remote Control Unit RCS-3MVHPS4E Fan & Fan Motor Cross-flow /AC motor Type Fan/Fan motor 1... D100 Q'ty...Dia. and length KFG4X-31B6P-S...1 Fan motor model...Q'ty No. of poles...rpm (220V, High) 4...1269 Nominal output Ω...
  • Page 12 Indoor Unit SAP-KRV303GJ Control PCB POW-KMRV243GJ Part No. Microprocessor Controls 2.50V 3.15A Control circuit fuse Remote Control Unit RCS-3MVPS4E Fan & Fan Motor Cross-flow /AC motor Type Fan/Fan motor 1... D100 Q'ty...Dia. and length KFG4X-31B6P-S...1 Fan motor model...Q'ty No. of poles...rpm (220V, High) 4...1269 Nominal output Ω...

  • Page 13: Other Component Specifications

    2-3. Other Component Specifications Indoor Unit SAP-KRV243GJH SAP-KRV243GJ SAP-KRV303GJH SAP-KRV303GJ Indoor air temp sensor Indoor heat exchanger sensor 10 20 30 40 50 60 70 80 90 Temperature (˚C) Temperature (˚C) Humidity sensor 1000 25˚C 30 35 40 45 50 55 60 65 70 75 80 85 90 Relative humidity (%)

  • Page 14: Dimensional Data

    3. DIMENSIONAL DATA Indoor Unit SAP-KRV243GJH 1,140 Remote control unit Center of tubing hole(2 places) Narrow tube ø6.35(1/4") Wide tube ø12.7(1/2") Drain hose ø18 14.3 unit: mm...
  • Page 15 Indoor Unit SAP-KRV243GJ 1,140 Remote control unit Center of tubing hole(2 places) Narrow tube ø6.35(1/4") Wide tube ø12.7(1/2") Drain hose ø18 14.3 unit: mm...
  • Page 16 Indoor Unit SPA-KRV303GJH 1,140 Remote control unit Center of tubing hole(2 places) Narrow tube ø6.35(1/4") Wide tube ø15.88(5/8") Drain hose ø18 14.3 unit: mm...
  • Page 17 Indoor Unit SAP-KRV303GJ 1,140 Remote control unit Center of tubing hole(2 places) Narrow tube ø6.35(1/4") Wide tube ø15.88(5/8") Drain hose ø18 14.3 unit: mm...
  • Page 18 Outer Dimensions of Outdoor Unit CRV243GJ/GJH Service valve on narrow tube side (Outer diameter Ø 6.35) Service valve on wide tube side (Outer diameter Ø 12.7) CRV303GJ/GJH Service valve on narrow tube side (Outer diameter Ø 6.35) Service valve on wide tube side (Outer diameter Ø...

  • Page 19: Refrigerant Flow Diagram

    4. REFRIGERANT FLOW DIAGRAM Indoor Unit SAP-KRV243GJH SAP-KRV303GJH Cooling Heating Indoor unit ø12.7 (KRV243GJH) ø15.88 (KRV303GJH) Indoor heat exchanger ø6.35 Indoor Unit SAP-KRV243GJ SAP-KRV303GJ Cooling Indoor unit ø12.7 (KRV243GJ) ø15.88 (KRV303GJ) Indoor heat exchanger ø6.35...

  • Page 20: Performance Data

    5. PERFORMANCE DATA 5-1. Air Throw Distance Chart Indoor Unit SAP-KRV243GJH Cooling Room air temp. 27˚C Fan speed High Horizontal distance (m) : Flap angle 0˚ , : Axis air velocity 0˚ : Flap angle 30˚, : Axis air velocity 30˚ Heating Room air temp.
  • Page 21 Indoor Unit SAP-KRV243GJ Room air temp. 27˚C Fan speed High Horizontal distance (m) : Flap angle 0˚ , : Axis air velocity 0˚ : Flap angle 30˚, : Axis air velocity 30˚...
  • Page 22 Indoor Unit SAP-KRV303GJH Cooling Room air temp. 27˚C Fan speed High Horizontal distance (m) : Flap angle 0˚ , : Axis air velocity 0˚ : Flap angle 30˚, : Axis air velocity 30˚ Heating Room air temp. 20˚C Fan speed High Horizontal distance (m) : Flap angle 45˚...
  • Page 23 Indoor Unit SAP-KRV303GJ Room air temp. 27˚C Fan speed High Horizontal distance (m) : Flap angle 0˚ , : Axis air velocity 0˚ : Flap angle 30˚, : Axis air velocity 30˚...

  • Page 24: Electrical Data

    6. ELECTRICAL DATA 6-1. Electrical Characteristics To avoid electrical shock hazard, be Indoor Unit SAP-KRV243GJH WARNING sure to disconnect power before checking, servicing andlor cleaning any electrical parts. Fan motor GRN/YEL Terminal Plate Connector 1 3 5 8 7 6 5 4 3 2 1 (WHT) 1 3 5 8 7 6 5 4 3 2 1...
  • Page 25 Indoor Unit SAP-KRV243GJ To avoid electrical shock hazard, be WARNING sure to disconnect power before checking, servicing andlor cleaning any electrical parts. Fan motor GRN/YEL Terminal Plate Connector 1 3 5 8 7 6 5 4 3 2 1 (WHT) 1 3 5 8 7 6 5 4 3 2 1 5P(BLK)
  • Page 26 Indoor Unit SAP-KRV303GJH To avoid electrical shock hazard, be WARNING sure to disconnect power before checking, servicing andlor cleaning any electrical parts. Fan motor GRN/YEL Terminal Plate Connector 1 3 5 8 7 6 5 4 3 2 1 (WHT) 1 3 5 8 7 6 5 4 3 2 1 5P(BLK)
  • Page 27 Indoor Unit SAP-KRV303GJ To avoid electrical shock hazard, be WARNING sure to disconnect power before checking, servicing andlor cleaning any electrical parts. Fan motor GRN/YEL Terminal Plate Connector 1 3 5 8 7 6 5 4 3 2 1 (WHT) 1 3 5 8 7 6 5 4 3 2 1 5P(BLK)

  • Page 28: Installation Instructions

    7. INSTALLATION INSTRUCTIONS 7-1-1. Tools Required for Installation (not supplied) Standard screwdriver Drill Phillips head screwdriver Tube cutter Knife or wire stripper Tube flaring tool Tape measure Torque wrench Carpenter ’s level Adjustable wrench Sabre saw or key hole saw Reamer (for deburring) Hacksaw Vacuum pump (For R410A)

  • Page 29: Installation Site Selection

    7-1-4. Additional Materials Required for Installation Refrigeration (armored) tape Indoor unit Insulated staples or clamps for connecting wire (See local codes) Putty Refrigeration lubricant Clamps or saddles to secure refrigerant tubing 7-2. Installation Site Selection Drain hose 7-2-1. Indoor Unit Outside drainage To prevent abnormal heat genera- WARNING...
  • Page 30 7-2. Connecting indoor unit and outdoor unit outdoor unit indoor unit ø6.35 CRV 243GJH KRV 243GJH ø12.7 ø6.35 CRV 243GJ KRV 243GJ ø12.7 ø6.35 CRV 303GJH KRV 303GJH ø15.88 ø6.35 CRV 303GJ KRV 303GJ ø15.88...
  • Page 31 7-2-2. Outdoor Unit AVOID: Exhaust fan heat sources, exhaust fans, etc. (Fig. 4) Hot air damp, humid or uneven locations. Heat source Outdoor unit 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.
  • Page 32 7-2-3. Diagram of Outdoor Unit Installation CRV243 The dimensions indicated by in the figure below are spaces that are required in order to maintain performance. Install in a location where the dimensions indicated by are ensured, and where 2 or more faces of the unit are unobstructed.
  • Page 33 7-3. Installation Process 7-3-1.Embedding the Tubing and Wiring Do not connect tubes to locations that are embedded. Be sure to bind refrigerant tubing and inter-unit cables together with vinyl tape. The power cable must be obtained on-site. (ø2.0: Less than 15 m /ø2.6: Less than 20 m / ø3.5: Less than 26 m) Be sure to apply the provided labels to both ends of the inter-unit cables to prevent miswiring.
  • Page 34 NOTE When reaming, hold the tube end downward and be Copper sure that no copper scraps fall into the tube. (Fig. 9) tubing (3) Remove the flare nut from the unit and be sure to mount it on the copper tube. Reamer (4) Make a flare at the end of copper tube with a flare tool.*(Fig.
  • Page 35 Be sure to match refrigerant CAUTION tubing and electric wiring Torque wrench between indoor and outdoor units. For more details, refer to Spanner “Tubing Check Control” in the Indoor unit Technical & Service Manual. Outdoor unit 7-3-7. Insulation of Refrigerant Tubing Fig.
  • Page 36 7-3-10. Refrigerant Operation System When the air conditioner is turned ON, the compressor starts to work. The compressor absorbs low-temperature and low-pressure refrigerant from the evaporator; the refrigerant is then compressed into high-temperature and high- pressure refrigerant gas and goes into the condenser (COMPRESSION). This high-temperature and high-pressure refrigerant gas is condensed into liquid refrigerant;...

  • Page 37: Air Purging

    7-4. Air Purging Manifold gauge Air and moisture remaining in the refrigerant system (special for R410A) Service valve Low- on narrow have undesirable effects as indicated below. There- High-pressure valve pressure tube side valve fore, they must be purged completely. Vacuum pump adapter Leave the...
  • Page 38 (11) Replace the flare nut on the wide tube service port and fasten the flare nut securely with an adjustable wrench or box wrench. Next, mount the valve cap and tighten it with a torque wrench (the cap needs to be tightened with the torque of 200 kg-cm).
  • Page 39 (3) Perform cooling operation or forced cooling operation. Wide tube side When the pressure at the low-pressure side is 0.15– 0.2 MPa (0.5– 1 kg/cm G), fully close the spindles at the valves on the wide tube of the indoor unit, and immediately stop operation. (Refer to Fig.
  • Page 40 7-5-2. Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes. Carefully observe these regulations when carry- ing out the installation. Table 6 shows maximum wire lengths for control line and power line and fuse or circuit capacity.
  • Page 41 7-5-4. Electric Wiring Diagram Electric Wiring Diagram for indoor unit KRV243GJH KRV243GJ KRV303GJH KRV303GJ Electric Wring Diagram XXXX Fan motor GRN/YEL Terminal plate Connector (WHT) 5P(BLK) Trans P 3P(WHT) Trans S 2P(WHT) Connector Lamp.1 (WHT) (WHT) 5P(WHT) Flap 1 5P(WHT) Lamp.2 5P(WHT) Flap motor (Upper)

  • Page 42: Electric Shock

    Electric Wiring Diagram for outdoor unit (CRV243GJH) Before replacing PCBs, turn off the power and check that all CAUTION lamps on the PCB are off before starting work. Electric shock will occur if work is performed while the lamps are lit. Electric Shock Fig.28...
  • Page 43 Electric Wiring Diagram for outdoor unit (CRV243GJ) Before replacing PCBs, turn off the power and check that all CAUTION lamps on the PCB are off before starting work. Electric shock will occur if work is performed while the lamps are lit. Electric Shock Fig.28...
  • Page 44 Electric Wiring Diagram for outdoor unit (CRV303GJH) Before replacing PCBs, turn off the power and check that all CAUTION lamps on the PCB are off before starting work. Electric shock will occur if work is performed while the lamps are lit. Electric Shock Fig.28...
  • Page 45 Electric Wiring Diagram for outdoor unit (CRV303GJ) Before replacing PCBs, turn off the power and check that all CAUTION lamps on the PCB are off before starting work. Electric shock will occur if work is performed while the lamps are lit. Electric Shock Fig.28...
  • Page 46 7-5-5. How to Connect Wiring to the Terminal Loose wiring may cause the WARNING 7 mm (ACTUAL STRIP terminal to overheat or result SIZE) SIZE in unit malfunction. A fire hazard may also exist. Fig. 29 Therefore, be sure all wiring is tightly connected.
  • Page 47 7-5-6. Wiring Instructions for the Outdoor Unit CAUTION Be sure to correctly align inter-unit cables. Outdoor unit Attach the label Terminal board BKW R Power: Single-phase, 240 V Power switch (not provided) Ground Power cable (not provided) Fasten the (ø2.0 mm: Less than 15 m) cable with cable (ø2.6 mm: Less than 20 m) fasteners.
  • Page 48 7-6. Test Run Performing a test run Refer to the test run procedures in the indoor unit installation manual. Perform the test run. If the room temperature is 15˚C or below, it may not be possible to check for tubing errors with cooling operation.
  • Page 49 7-7. Installation Check Sheet The strength of the installation location is sufficient to support the A/C weight. The indoor and outdoor units are installed level and vertically. The power and voltage are as specified. Inter-unit cables are securely fastened to the termi- nal board.

  • Page 50: Unit Display And Operation Selector

    8. Unit Display and Operation Selector KRV 243 KRV 303 INDOOR UNIT DEMO. TEST Operation selector TIMER OPERATION lamp lamp TIMER OPERATION IMPORTANT Avoid using radio equipment such as mobile phone near (within 1 m) the remote control receiver. Some radio equipment may cause malfunction of the unit.

  • Page 51: Remote Control Unit

    9. Remote Control Unit Displayed when setting temperature in automatic operation Displayed when transmitting data NORMAL Displayed when indoor unit sensor is in use Displayed when setting 1HR. temperature Displayed when setting timer Symbols (1) Operation mode (5) ECONOMY AUTO (6) High power operation HEAT (7) Flap indication...
  • Page 52 Remote Control Unit (Continued) AIR CONDITIONER Sensor Transmitter NORMAL 1HR. HIGH ON . I/OFF . O POWER 1HR. TEMP. AIR CONDITIONER NORMAL (Cover closed) 1HR. Display HIGH ON . I/OFF . O POWER HIGH POWER button ON/OFF operation button 1HR. 1 HR.
  • Page 53 Remote Control Unit (continued) ON TIME / OFF TIME No display : The timer does not operate. setting buttons : The air conditioner stops at the set time. : The air conditioner starts at the set time. : The air conditioner stops and starts, or starts and stops, at the set times every day.
  • Page 54 Sanyo air conditioners are installed next to each other. Normally, the address switch is set to A. When switching the adress, take the steps listed below. Contact your dealer where you made the purchase if 3 or more Sanyo air conditioners are to be operated.

  • Page 55: Using The Remote Control Unit

    9-1. Using the Remote Control Unit How to Install Batteries 1. Slide the cover in the direction indicated by the arrow and remove it. 2. Install two AAA alkaline batteries. Make sure the batteries point in the direction Marked in the battery compartment. 3.

  • Page 56: Operation With The Remote Control Unit

    9-2. Operation with the Remote Control Unit 1. Automatic Operation AIR CONDITIONER HIGH ON . I/OFF . O POWER STEP 2 1HR. STEP 3 TEMP. ECONOMY MODE STEP 1 STEP1 Press the MODE selector button and select (AUTO). STEP2 Press the ON / OFF button and switch the air conditioner ON. Press the temperature setting buttons (TEMP.).
  • Page 57 As shown in the figure below, the automatic selection of the operating modes is determined by the indoor temperature and outside air temperature. Temperature setting Indoor temperature (standard) Approx. Approx. Approx. Cooling Approx. operation Approx. 20* to 26* Drying operation Approx.
  • Page 58 STEP 1 Press the MODE selector button and select the desired mode. For heating operation For dehumidifying operation For cooling operation STEP 2 To start the air conditioner, press the ON/ OFF operation button. STEP 3 Press the temperature setting buttons to change the temperature setting to the desired temperature.
  • Page 59 3. Adjusting the Fan Speed A. Automatic Simply set the FAN SPEED selector button to the the position. B.Manual If you want to adjust fan speed manually during operation, just set the FAN SPEED selector button as desired. [ , or 4.
  • Page 60 A. In Cooling and DRY Mode: When the ECONOMY mode is selected, the air conditioner automatically raises the temperature setting 1* when 60 minutes have passed after the selection was made. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.

  • Page 61: Special Remarks

    9-3. Special Remarks In the event of power failure, the unit will stop. When the power is resumed, the unit Power failure will restart automatically after five minutes. during operation Clicking Sound Clicking sound is heard In heating or cooling operation, any plastic parts may expand or shrink due to a sudden from the air conditioner temperature change.

  • Page 62: Setting The Timer

    9-4. Setting the Timer HIGH ON . I/OFF . O POWER 1HR. TEMP. ECONOMY MODE FLAP FAN SPEED CANCEL SENSOR CLOCK BATTERIES **** **** 1. How to set the present time (Example) To set to 10:30 pm. Operation Indication 1. Press the CLOCK button three times. The time indication alone blinks.
  • Page 63 The timer can be programmed while the unit is operating or while it is stopped. NOTE A timer program is canceled after the timer has operated. So the timer should be set every time programming operation is to be performed. The airflow direction, fan speed and temperature setting can be changed after a timer program has been set even when the unit is stopped.
  • Page 64 4. How to set DAILY ON / OFF (Example) to start operation at 7:10 am. and stop the air conditioner at 11:00 am. REPEAT timer 7:10 am. 11:00 am. Present time Operation Indication time The present time 10:30 pm. and 1.

  • Page 65: Setting The 1-Hour Offtimer

    9-5. Setting the 1-Hour OFFTimer 1. 1-Hour OFFTimer This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. indicator in the display indicates that this function is operating. 1HR.
  • Page 66 NOTE Concerning HIGH POWER During a heating operation operations The room is heated for 15 minutes by warm air which has a slightly higher temperature than usual. When the HIGH POWER button is pressed during a defrosting operation, the unit enters the HIGH POWER operating mode upon completion of the defrosting operation.

  • Page 67: Adjusting The Airflow Direction

    9-7. Adjusting the Airflow Direction 1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during CAUTION the cooling or dehumidifying operation.

  • Page 68: Operation Without The Remote Control Unit

    10. Operation without the Remote Control Unit INDOOR UNIT If you have lost the remote control unit or it has trouble, follow the steps below. 1. When the air conditioner is not running If you want to turn on the air conditioner, DEMO.
  • Page 69 Care and Cleaning (continued) Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at least once every two weeks. How to remove the 1. Grasp both ends of Air intake grille anti-mold filter the air intake grille and pull it out and up.
  • Page 70 Care and cleaning (continued) Air Cleaning Filter The air cleaning filter removes dust and dirt from the air, and reduces odors and smoke from tobacco. This air cleaning filter cannot remove harmful gases or vapors nor ventilate air in WARNING the room.

  • Page 71: Functions

    12. FUNCTIONS 12-1. Operation Functions Functions of the main unit controller SENSOR DRY *OFF Used to stop the unit when the remote During automatic operation, the system adjusts the (Self-diagnostics) controller is unavailable. room temperauture and fan speed according to the Used when service inspection is conditions in the room, in order to maintain a performed.
  • Page 72 HIGH POWER Lamp colors Raises the power but remains in the same operating mode. Operation lamp This function is set with the HIGH POWER button on the HEAT operation : Red remote controller. DRY operation : Orange (It is set regardless of the temperature and fan speed COOL operation : Green settings.)

  • Page 73: Troubleshooting

    13. TROUBLESHOOTING Precautions before performing inspection or repair After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair. High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 280V) even after the power is turned OFF, and some time is required for the charge to dissipate.
  • Page 74 Details of Self-Diagnostics When the operation selector on the indoor unit is moved from the ON or TEST position to the OFF (Self-diagnostics) position, the indicator lamps on the indoor unit will flash (or remain ON) for 5 seconds and then turn OFF for 2 seconds (buzzer sounds once) to indicate the presence of a sensor failure or the activation of a protective function.
  • Page 75 OUTDOOR UNIT LED INDICATION LED LAMP INDICATION LED LANPS LIGHT AND SHOW THE PROTECTIVE OPERATION IN THE OUTDOOR UNIT AND THE TROUBLES CAUGHT BY SENSOR AS SHOWN BELOW TABLE. : ON : OFF ERROR DISPLAY DETAIL SENSER FOR COMPRESSOR DISCHARGE TEMP SENSER FOR HEAT EXCHANGER TEMP SENSOR FOR BRANCH PIPE (NARROW TUBE) OUTDOOR TEMP SENSOR...
  • Page 76 If the self-diagnostics function fails to operate No indicators illuminate and the Check the indoor unit. indoor fan does not turn. Check the power voltage. Blown Is the fuse blown? Normal Replace the circuit board or the fuse. Replace the controller. <Checking the indoor and outdoor units>...
  • Page 77 <Noise malfunction and electromagnetic interference> An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices. A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these effects may still occur.

  • Page 78: Part List

    Dalian SANYO Air Conditioner Co.,Ltd.

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