Fujitsu AWYZ14LBC Service Instruction
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Also See for AWYZ14LBC:
- Operating manual (26 pages) ,
- Service manual (19 pages) ,
- Installation manual (2 pages)
Related Manuals for Fujitsu AWYZ14LBC
Summary of Contents for Fujitsu AWYZ14LBC
- Page 1 SPLIT TYPE ROOM AIR CONDITIONER CEILING WALL type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AWYZ14LBC AOYZ14LBC AOYZ18LBC AWYZ18LBC R410A...
- Page 2 CONTENTS 1. SPECIFICATION AWYZ14/18LBC, AOYZ14/18LBC................... 01-01 2. DIMENSIONS AWYZ14/18LBC, AOYZ14/18LBC ................... 02-01 3. REFRIGERANT SYSTEM DIAGRAM AWYZ14/18LBC, AOYZ14/18LBC ................... 03-01 4. CIRCUIT DIAGRAM AWYZ14/18LBC, AOYZ14/18LBC................... 04-01 5. DESCRIPTION OF EACH CONTROL OPERATION 1. COOLING OPERATION....................05-01 2. HEATING OPERATION....................05-02 3.
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Page 3: Table Of Contents
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 CEILING WALL type INVERTER 1 . SPECIFICATIONS...
- Page 5 SPECIFICATIONS TYPE (COOL&HEAT INVERTER) (COOL&HEAT INVERTER) INDOOR UNIT AWYZ14LBC AWYZ18LBC OUTDOOR UNIT AOYZ14LBC AOYZ18LBC COOLING CAPACITY( ) : Range (kW) 4.2 (0.9~5.3) 5.2 (0.9~5.9) HEATING CAPACITY( ) : Range (kW) 6.0 (0.9~9.1) 6.7 (0.9~9.7) ELECTRICAL DATA POWER SOURCE FREQUENCY (Hz)
- Page 6 R410A CEILING WALL type INVERTER 2 . DIMENSIONS...
- Page 7 D I M E N S I O N S Models : AWYZ14LBC / AOYZ14LBC AWYZ18LBC / AOYZ18LBC (Unit : mm) 02-01...
- Page 8 R410A CEILING WALL 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 : AWYZ14LBC / AOYZ14LBC AWYZ18LBC / AOYZ18LBC Heat exchanger Muffler ( INDOOR ) Heat exchanger B...
- Page 10 R410A CEILING WALL type INVERTER 4 . CIRCUIT DIAGRAM...
- Page 11 CIRCUIT DIAGRAM Models : AWYZ14LBC / AOYZ14LBC AWYZ18LBC / AOYZ18LBC AIR FILTER (LEFT) INDOOR UNIT SWITCH (LEFT) TERMAL FUSE 102 AIR FILTER (RIGHT) SWITCH INDICATOR PCB (RIGHT) CN208 TERMAL FUSE 102 CONNECTOR (RED) BROWN WHITE WHITE ORANGE CN204 CN201 CN200...
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Page 12: New Refrigerant R410A
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 13 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 14 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 Suitable for Small Air-Conditioners...
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Page 15: Defference From Conventional Model(R22) And Precautions
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 16: Trouble Shooting
R410A CEILING WALL 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 17 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.
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Page 18: Self Diagnosis Function
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 19: Self-Diagnosis Function And Checking Points
Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (RED) (GREEN) 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. >Permanent stop after 30 seconds. - Page 20 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (RED) (GREEN) 0.5 sec 0.5 sec Discharge thermistor error The detection value of the discharge thermistor is either open or shorted. > Compressor, outdoor fan : OFF (It automatically releases when the normal value is detected.) 3 times 2 times [Diagnosis Point]...
- Page 21 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (RED) (GREEN) 0.5 sec 0.5 sec IPM protection Abnormal current value of IPM is detected. 5 times 2 times > Permanent stop. [Diagnosis Point] Heat radiation is blocked (inlet/outlet). Check if outdoor fan is defective (does not rotate).
- Page 22 Self - diagnosis function and Checking points Error Indication Error Diagnosis Method Operation Timer (Protection) (RED) (GREEN) 0.5 sec 0.5 sec Indoor fan lock error The indoor fan speed is 0 rpm after 56 seconds from starting operation or from the time the fan mode was changed. >...
- Page 23 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 xlampers 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.
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Page 24: Ipm Protection
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 25: Active Filter Failure
Active Filter Failure [Checking points] Check the following points and locae the cause in the outdoor unit. [Cause] (1) Incorrect wiring (2) Active Filter Module defective (3) PC Board defective (4) DC voltage detectiion circuit defective [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 26: Trouble Shooting Of Refrigerant Cycle
Trouble Shooting of Refrigerant Cycle [Diagnosis Table for Defective Component] : Item of most possible cause Cooling High Compressor Discharge IPM Protection Pressure 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.