Download
Share
Print this page
Fujitsu AS A09LGC Series Service Instruction
  1. Manuals
  2. Brands
  3. Fujitsu Manuals
  4. Air Conditioner
  5. AS A09LGC Series
  6. Service instruction
Fujitsu AS A09LGC Series Service Instruction

Fujitsu AS A09LGC Series Service Instruction

Wall mounted type inverter, refrigerant r410a, indoor/outdoor unit
Hide thumbs

Advertisement

Quick Links

Download this manual
SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED
INVERTER
Models
Indoor unit
AS*A09LGC
AS*A12LGC
type
Outdoor unit
AO*R09LGC
AO*R12LGC

Advertisement

loading
Need help?

Need help?

Do you have a question about the AS A09LGC Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Fujitsu AS A09LGC Series

Summary of Contents for Fujitsu AS A09LGC Series

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AO*R09LGC AS*A09LGC AO*R12LGC AS*A12LGC R410A...
  • Page 2 CONTENTS 1. SPECIFICATION AS*A09/12LGC, AO*R09/12LGC................... 01-01 2. DIMENSIONS AS*A09/12LGC, AO*R09/12LGC ................... 02-01 3. REFRIGERANT SYSTEM DIAGRAM AS*A09/12LGC, AO*R09/12LGC ................... 03-01 4. CIRCUIT DIAGRAM AS*A09/12LGC, AO*R09/12LGC..................04-01 5. DESCRIPTION OF EACH CONTROL OPERATION 1. COOLING OPERATION....................05-01 2. HEATING OPERATION....................05-02 3.
  • Page 3 6. REFRIGERANT CAUTION -R410A- 1. R410A TOOLS......................06-01 2. PRECAUTION FOR INSTALLATION................. 06-02 3. PRECAUTION FOR SERVICING................06-04 4. NEW REFRIGERANT R410A..................06-05 5. DEFFERENCE FROM CONVENTIONAL MODEL(R22) AND PRECAUTIONS..06-08 7. TROUBLE SHOOTING 1. WHEN THE UNIT DOES NOT OPERATE AT ALL............ 07-01 2.
  • Page 4 R410A WALL MOUNTED type INVERTER 1 . SPECIFICATIONS...
  • Page 5 SPECIFICATIONS ELECTRICAL DATA DIMENSIONS H x W x D Cool & heat inverter INDOOR UNIT 260 x 790 x 198 mm TYPE OUTDOOR UNIT H x W x D 540 x 660 x 290 mm INDOOR UNIT AS*A09LGC AS*A12LGC OUTDOOR UNIT AO*R09LGC AO*R12LGC COOLING CAPACITY...
  • Page 6 R410A WALL MOUNTED type INVERTER 2 . DIMENSIONS...
  • Page 7 D I M E N S I O N S Models : AS*A09LGC / AO*R09LGC AS*A12LGC / AO*R12LGC (unit : mm) INDOOR UNIT OUTDOOR UNIT 02-01...
  • Page 8 R410A WALL MOUNTED type INVERTER 3 . REFRIGERANT SYSTEM DIAGRAM...
  • Page 9 R E F R I G E R A N T S Y S T E M D I A G R A M Models : AS*A09LGC / AO*R09LGC AS*A12LGC / AO*R12LGC Heat exchanger (indoor unit) 3-Way valve 2-Way valve Muffler Muffler Strainer...
  • Page 10 R410A WALL MOUNTED type INVERTER 4 . CIRCUIT DIAGRAM...
  • Page 11 CIRCUIT DIAGRAM Models : AS*A09LGC / AO*R09LGC AS*A12LGC / AO*R12LGC INDOOR UNIT INDICATOR PCB ASSEMBLY FAN MOTOR TERMINAL GRAY GRAY BLACK WHITE GREEN GREEN / YELLOW EARTH TERMINAL POWER SOURCE STEP MOTOR ( LOUVER ) OUTDOOR UNIT AO*R09LGC COMPRESSOR REACTOR REACTOR R(R)U WHITE...
  • Page 12 R410A WALL MOUNTED type INVERTER 5 . DESCRIPTION OF EACH CONTROL OPERATION...
  • Page 13 1. COOLING OPERATION 1-1 COOLING CAPACITY CONTROL A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is 2°C higher than a set temperature, the compressor operation frequency will attain to maximum performance.
  • Page 14 2. HEATING OPERATION 2-1 HEATING CAPACITY CONTROL A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is lower by 3°C than a set temperature, the compressor operation frequency will attain to maximum performance.
  • Page 15 3. DRY OPERATION 3-1 INDOOR UNIT CONTROL The compressor rotation frequency shall change according to the temperature, set temperature, and room temperature variation which the room temperature sensor of the indoor unit body has detected as shown in the Table 3. However, after the compressor is driven, the indoor unit shall run at operation frequency of 70Hz (for ASYA09LGC) or 56Hz (for ASYA12LGC), for a minute.
  • Page 16 4. AUTO CHANGEOVER OPERATION When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum mode from among the HEATING, COOLING, DRY and MONITORING modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set between 18°C and 30°C in 1°C steps.
  • Page 17 5. INDOOR FAN CONTROL 1. Fan speed ( Table 6 : Indoor Fan Speed ) AS*A09/ 12LGC Operation mode Air flow mode Speed (rpm) 1440 Heating 1370 1200 Quiet Cool air prevention S-Lo Cooling 1440 1200 Quiet X zone: 680 J zone: 650 2.
  • Page 18 4. DRY OPERATION Refer to the Table 6. During the dry mode operation, the fan speed setting can not be changed. 5. HEATING OPERATION Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 7.
  • Page 19 6. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor Following table shows the type of the outdoor fan motor. The control method is different between AC motor and DC motor. ( Table 7 : Type of Motor ) AC Motor DC Motor AS*A09/ 12LGC 2.
  • Page 20 7. LOUVER CONTROL 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: (Fig 9: Air Direction Range) Cooling / Dry mode Heating mode Fan mode Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
  • Page 21 8. COMPRESSOR CONTROL 1. OPEARTION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in the table 10. (Table 10 : Compressor Operation Frequency Range) Cooling Heating AS*A09LGC 22Hz 90Hz 22Hz 99Hz 28Hz 37Hz AS*A12LGC...
  • Page 22 9. TIMER OPEARTION CONTROL The table 11 shows the available timer setting based on the product model. (Table 11 : Timer Setting) ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER AS*A09/ 12LGC 1. OPEARTION FREQUENCY RANGE OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 23 3. SLEEP TIMER If the sleep is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON. In the cooling operation mode When the sleep timer is set, the setting temperature is increased 1°C.
  • Page 24 10. ELECTRONIC EXPANSION VALVE CONTROL The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the following values. The compressor frequency, the temperatures detected by the discharge temperature sensor, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.
  • Page 25 15. MANUAL AUTO OPERATION (Indoor unit body operation) If MANUAL AUTO Button is set, the operation is controlled as shown in Table 12. If the remote control is lost or battery power dissipated, this function will work without the remote control. (Table 12) Manual auto operation Forced cooling operation...
  • Page 26 19. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts when the outdoor heat exchanger temperature sensor detects the temperature lower than the values shown in Table 14. (Table 14 : Condition of starting Defrost Operation) Compressor operating time 25 minutes to Less than 25 minutes...
  • Page 27 Defrost Flow Chart The defrosting shall proceed by the integrating operation time and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 10 minutes) Compressor integrating Compressor integrating operation: operation: Over 25 minutes to Over 240 minutes below 240 minutes Outdoor heat exchanger...
  • Page 28 20. OFF DEFROST OPEARTION CONTROL When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat exchanger, the defrost operation will proceed automatically. In this time, if indoor unit operation lamp flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost, and then stop.
  • Page 29 22. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than Temperature ,the compressor frequency is decreased 20 Hz, and it continues to decrease the frequency for 20 Hz every 120 seconds until the temperature becomes lower than Temperature .
  • Page 30 3. ANTIFREEZING CONTROL (Cooling and Dry mode) The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger temperature sensor detects the temperature lower than Temperature . Then, the anti-freezing control is released when it becomes higher than Temperature . (Table 19 : Anti-freezing Protection Operation / Release Temperature) Outdoor temperature Temperature...
  • Page 31 R410A WALL MOUNTED type INVERTER 6 . REFRIGERANT CAUTION -R410A-...
  • Page 32 1. R410A TOOLS This air conditioner used R410A. TOOLS AND EQUIPMENT (R410A) For installation and servicing, it is necessary to prepare the tools and machines that are different from the previous Pressure control and Gas charging refrigerant. Circuit switching Safety charger Fig.4-13 Mark shows the exclusive use for R410A.
  • Page 33 2. PRECAUTION FOR INSTALLATION Precaution for installation Pipe diameter, recommended material and wall thickness Nominal diameter 1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1" 1 1/8" 1 1/4" 1 3/8" 1 1/2" (in) Outside diameter 6.35 9.52 12.70 15.88 19.05 22.22 25.40 28.58 31.75 34.92...
  • Page 34 Be careful not to mix moisture and contamination into the pipe Moisture contamination in the pipe is a cause of trouble. Air purge Always use a vacuum pump to purge air. Refrigerant charge Don't charge from the phase side. Do it always from the liquid phase side.
  • Page 35 3. PRECAUTION FOR SERVICING Feature 1 Refrigerant oil is different from before. Precaution on Tools Refrigerant oil for Different point from New Refrigerant previous one Use the gauge manifold and charge hose Synthetic oil Absorbent character for New Refrigerant(HFC), which shall is high.
  • Page 36 4. NEW REFRIGERANT R410A What is HFC ? Phase-out schedule of HCFC according to Montreal protocol (HCFC consumption of 1989) + 100% = (CFC consumption of 1989) x 2.8% total abolition only service use started control 0.5% 1996 2000 2004 2010 2015 2020...
  • Page 37 Ozone Layer depleting mechanism sunbeam Ozone CFCl What is CFC and HCFC? CFC : Chloro-Fluoro-Carbon High ODP( ozone depletion potential ) chemical compound, including chlorine. (ODP:0.6-1.0) For example : R12 (for refrigerator and car air-conditioner) HCFC : Hydro-Chloro-Fluoro-Carbon Low ODP chemical compound, including chlorine and hydrogen. (ODP:0.02-01) For example : R22 (for air-conditioner) : Hydro-Fluoro-Carbon...
  • Page 38 Summary of R407C and R410A characteristics R410A R407C higher system similar pressure as R22 performance (possible to design Advantage Near-Azeotropic large equipment) refrigerant 1.6 times higher Zeotropic refrigerant pressure than R22 Disadvantage (handle with care) (difficult to design against pressure resistance) Large Air-Conditioners Small Air-Conditioners Suitable for...
  • Page 39 5. DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS • Use new synthetic oils such as ester because HFC series refrigerant has less solubility with mineral oils conventionally used for R22. • As these new synthetic oils are easily influenced by moisture and dusts, they must be treated more care- fully than the conventional lubricating oils.
  • Page 40 R410A WALL MOUNTED type INVERTER 7 . TROUBLE SHOOTING 1. When the unit does not operate at all (Operation lamp and Timer lamp do not light up) 2. Self Diagnosis Function (Either Operation lamp or Timer lamp is blinking) * How to operate the self-diagnosis function * Self- diagnosis table and Check points 3.
  • Page 41 Does not operate at all (Operation Lamp and Timer Lamp do not light up) [Check Point] (1) Is the input power voltage from the exclusive circuit AC outlet normal? (2) Is the AC plug inserted to the AC outlet securely and not loose? Does not connected cable do wrong wiring? (4) Check if each connector is inserted securely.
  • Page 42 SELF-DIAGNOSIS FUNCTION This function memorizes the self-diagnosis function (lamp display) in the in door control P.C.Board when trouble occurs. (The memory contents are not destroyed even when the power cord is unplugged from the AC outlet.) The self-diagnosis function (lamp display) can also be switched between major classification display and minor classification display and precise diagnosis can be made.
  • Page 43 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (GREEN) (ORANGE) 0.5 sec Serial reverse transfer error At the start up, the indoor unit does not receive the signal for 10 consecutive seconds from the time when the power relay was ON. 2 times at starting up operation >Permanent stop after 30 seconds.
  • Page 44 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (GREEN) (ORANGE) 0.5 sec 0.5 sec Discharge thermistor error The detection value of the discharge thermistor is either open or shorted. 3 times 2 times >...
  • Page 45 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (GREEN) (ORANGE) 0.5 sec 0.5 sec IPM protection Abnormal current value of IPM is detected. > Permanent stop. 5 times 2 times [Diagnosis Point] Heat radiation is blocked (inlet/outlet). Check if outdoor fan is defetcive (does not rotate).
  • Page 46 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (GREEN) (ORANGE) 0.5 sec 0.5 sec Discharge temperature The discharge temperature error is activated. 7 times 2 times error > Permanent stop. [Diagnosis Point] Check if 2-way valve or 3-way valve is left open. Heat radiation is blocked (Inlet /outlet).
  • Page 47 Serial Signal Receiving Error [Check Point] Check which has a cause of error, either Indoor unit or Outdoor unit. * Remove indoor unit front panel and cable clampers and keep the terminal block clear so that it can be measured with a meter. * Remove AC power and reset the power, and press Test Operation switch on remote control.
  • Page 48 IPM Protection [Checking Points] Check the following points and locate the cause in the outdoor unit. [Cause]   (1) Compressor failure   (2) Refrigeration cycle failure   (3) PC Board defective   (4) IPM defective   (5) Incorrect wiring [First step] Measure the DC voltage at terminals (between Electrolytic Capacitor and discharge resistance) in the Inverter Controller Assy, and make sure it is lower than DC5V.
  • Page 49 Trouble Shooting of Refrigerant Cycle [Diagnosis Table for Defective Component] : Item of most possible cause Cooling High Compressor Discharge Pressure IPM Protection Location error Temperature Error Protection Refrigerant leak Compressor failure(*) EEV failure (*) Thermistor failure (*) (*) Trouble Shooting Method (1) Checking method of the compressor failure Insert the AC plug and start up the cooling operation.
  • Page 50 R410A WALL MOUNTED type INVERTER 8 . APPENDING DATA 1. Function setting 2. Jumper setting of Outdoor unit 3. Outdoor unit Pressure Value and Total Electric Current Curve 4. Thermistor Resistance Values 5. Capacity/ Input Data...
  • Page 51 8-1. FUNCTION SETTING 8-1-1 INDOOR UNIT Follow the instructions in the Local Setup Procedure, which is supplied with the remote control, in accordance with the installed condition. After the power is turned on, perform the Function Setting on the remote control. The settings may be selected between the following two: Function Number or Setting Value.
  • Page 52 8-1-2 Procedures to change the Function Setting for wireless RC This procedure changes to the function settings used to control the indoor unit according to the installation conditions. Incorrect settings can cause the indoor unit malfunction. After the power is turned on, perform the "FUNCTION SETTING" according to the installation conditions using the remote controller.
  • Page 53 STEP 2 Selecting the Function Number and Setting Value (1) Press the SET TEMP. ( ) buttons to select the function number. (Press the MODE button to switch between the left and right digits.) (2) Press the FAN button to proceed to setting the value. (Press the FAN button again to return to the function number selection.) (3) Press the SET TEMP.
  • Page 54 8-3 . Outdoor unit Pressure Value and Total Electric Current Curve 8-3-1 Cooling operation Model Name : AS*A09/12LGC [Condition] Ambient Indoor / Outdoor - Same temperature temperature Refrigerant Standard amount amount Piping 5.0m (Height difference 1m) length Power 50Hz - 230V voltage Operation TEST mode (Cooling), Hi Fan, Horizontal direction, Front air flow...
  • Page 55 8-3-2 Heating operation Model Name : AS*A09/12LGC [Condition] Ambient Indoor 15, 20, 23degC, Outdoor 2, 7, 12degC temperature Refrigerant Standard amount amount Piping 5.0m (Height difference 1m) length Power 50Hz - 230V voltage Operation TEST mode (Heating), Hi Fan, Lower direction, Front air flow condition Measure the high pressure with the pressure meter at the service valve.
  • Page 56 8-4. Thermistor Resistance Values 8-4-1 INDOOR UNIT Room temperature thermistor Indoor heat exchanger thermistor Resistance(k ) Voltage(V) Resistance(k ) Voltage(V) Temp ( C) Temp ( C) 0.00 33.62 1.15 0.00 176.03 1.10 5.00 25.93 1.39 5.00 134.23 1.36 10.00 20.18 1.66 10.00 103.34...
  • Page 57 8-5. Capacity/ Input Data MODEL : AS*A09LGC COOLING 12.5 °CDB °CWB °CDB 2.34 1.60 0.44 2.61 1.61 0.45 2.70 1.75 0.45 2.87 1.76 0.46 2.96 1.90 0.46 3.14 1.89 0.46 3.32 2.01 0.47 2.22 1.52 0.50 2.48 1.53 0.50 2.56 1.66 0.51 2.73...
  • Page 58 MODEL : AS*A12LGC COOLING 12.5 °CDB °CWB °CDB 3.18 2.20 0.61 3.55 2.21 0.62 3.67 2.41 0.63 3.91 2.41 0.63 4.03 2.61 0.64 4.27 2.60 0.64 4.51 2.77 0.65 3.03 2.09 0.70 3.37 2.11 0.71 3.49 2.29 0.71 3.72 2.30 0.72 3.83 2.48...
  • Page 59 R410A WALL MOUNTED type INVERTER 9 . REPLACEMENT PARTS...
  • Page 60 REPLACEMENT PARTS Models : AS*A09LGC AS*A12LGC Air Filter Front Panel Clamper (Grille) Air Filter Receiver Window Clamper (Grille) Intake Grille Panel Cover Remote Control Remote Control Holder 09-01...
  • Page 61 REPLACEMENT PARTS Models : AS*A09LGC AS*A12LGC Evaporator Holder L Rear Bracket Evaporator Holder R Filter Guide Evaporator Assy Joint Pipe Assy 09-02...
  • Page 62 REPLACEMENT PARTS Models : AS*A09LGC AS*A12LGC Shaft Holder C Crossflow Fan Assy Bracket Panel Motor Cover Fan Motor Casing Fan Guard Drain Cap Casing Cover B Casing Cover F Louver Gear Holder R and L Louver B Drain Hose Assy Louver Z Motor Step Louver Gear...
  • Page 63 REPLACEMENT PARTS Models : AS*A09LGC AS*A12LGC Box Shield Control Box Controller PCB Assy Display PCB Assy Control Cover Cover Shield Display Case Power Cord Assy 09-04...
  • Page 64 REPLACEMENT PARTS Models : AO*R09LGC AO*R12LGC Protective Net Top Panel Assy Cabinet Left Assy Separator Assy Fan Ring Reactor Assy Valve Bracket Cover Switch Cover Emblem REM Plate Assy Valve Bracket Motor Bracket Cabinet Right Assy Front Panel Assy Propeller Fan Fan Motor 09-05...
  • Page 65 REPLACEMENT PARTS Models : AO*R09LGC Condenser Assy Pulse Motor Expansion Valve Coil Valve Assy 4 way Valve Compressor Assy Entrance Pipe Assy (Cond) Discharge Pipe Assy Exit Pipe Separate Pipe Muffler Assy (Cond) Base Assy Cushion 2 way Valve Assy 3 way Valve Assy Models : AO*R12LGC Condenser Assy...
  • Page 66 REPLACEMENT PARTS Models : AO*R09LGC AO*R12LGC Sealed Panel Heat sink B Controller PCB Assy PCB Holder Inverter Case Assy Heat sink A Terminal Terminal Cover Bracket Terminal 09-07...
  • Page 67 R410A WALL MOUNTED type INVERTER 10 . INSTALLATION MANUAL...
  • Page 68 SPLIT TYPE ROOM AIR CONDITIONER For authorized service personnel only. INSTALLATION MANUAL WARNING (1) For the room air conditioner to operate satisfactory, install it as outlined in this installation manual. (2) Connect the indoor unit and outdoor unit with the air conditioner piping and cords available standards parts. This (PART NO.
  • Page 69 INDOOR UNIT For left piping and left rear piping, align the marks on the wall hook Fig. 8 bracket and shape the connection pipe. Connection pipe CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING Bend the connection piping at the bend radius of 70 mm or more and (6.35 mm dia.) install no more than 35 mm from the wall.
  • Page 70 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Feb. 2008 Printed in Japan...

This manual is also suitable for:

As a12lgc seriesAo r09lgc seriesAo r12lgc series