Fujitsu R410A Service Instruction Download | Manualshive

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25. VARIOUS PROTECTIONS

1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENTION CONTROL

The discharge gas thermo sensor (discharge thermistor : Outdoor side) will detect discharge gas
temperature.

AOU18 / 24RLXFW1

219.2°F
(104°C)

213.8°F
(101°C)

230°F
(110°C)

When the discharge temperature becomes higher than Temperature

䊠

, the compressor frequency

is decreased 10rps, and it continues to decrease the frequency for 10rps every 120 seconds until
the temperature becomes lower than Temperature

䊡㻌

.

When the discharge temperature becomes lower than Temperature

䊡

, the control of the control of

the compressor frequency is released.

When the discharge temperature becomes higher than Temperature

䊢

, the compressor is stopped

and the indoor unit LED starts blinking.

( Table 24 : Discharge temperature over rise prevention control / Release temperature)

Temperature

Temperature

Temperature

2. CURRENT RELEASE CONTROL

The compressor frequency is controlled so that the outdoor unit input current does not exceeds
the current limit value that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.

( Table 25 : Current release operation value / Release value )

[ Heating ]

OT (Control / Release)

10.0A/ 9.5A

11.5A/ 11.0A

13.0A/ 12.5A

13.0A/ 12.5A

11.0A/ 10.5A

13.0A/ 12.5A

15.0A/ 14.5A

15.0A/14.5A

62.6°F(17°C)

53.6°F(12°C)

OT : Outdoor Temperature

41°F(5°C)

62.6°F(17°C)

53.6°F(12°C)

41°F(5°C)

AOU18RLXFW1

OT (Control / Release)

OT : Outdoor Temperature

AOU24RLXFW1

OT (Control / Release)

10.0A/ 9.5A

12.5A/ 12.0A

12.5A/ 15.0A

114.8°F(46°C)

104°F(40°C)

OT : Outdoor Temperature

12.5A/ 15.0A

53.6°F(12°C)

12.5A/ 15.0A

35.6°F(2°C)

AOU18RLXFW1

[ Cooling ]

122°F(50°C)

9.0A/ 8.5A

OT (Control / Release)

10.0A/ 9.5A

13.0A/ 12.5A

14.5A/ 14.0A

114.8°F(46°C)

104°F(40°C)

OT : Outdoor Temperature

14.5A/ 14.0A

53.6°F(12°C)

14.5A/ 14.0A

35.6°F(2°C)

AOU24RLXFW1

122°F(50°C)

9.0A/ 8.5A

䊢

䊠

䊡

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Summary of Contents for R410A

Page 1: ...SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTEDtype Models Indoor unit Outdoor unit INVERTER SERVICE INSTRUCTION R410A ASU18RLF ASU24RLF AOU18RLXFW1 AOU24RLXFW1 ...

Page 2: ...DITION BUILDING INSULATION 01 01 01 02 01 02 01 03 01 04 01 06 01 07 01 08 01 09 01 11 01 11 01 11 01 12 01 12 01 12 01 13 01 13 01 13 01 14 01 14 22 THERMO CONTROL FOR WIRED REMOTE SENSOR 01 14 24 OFF DEFROST OPERATION CONTROL 23 DEFROST OPERATION CONTROL 01 15 01 17 25 VARIOUS PROTECTIONS 01 18 01 11 2 TROUBLE SHOOTING 2 1 ERROR DISPLAY 2 1 1INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY 3 APPE...

Page 3: ...1 DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER ...

Page 4: ...uiet A zone Zone 55rps 36rps 29rps 25rps B zone 55rps 36rps 29rps 25rps C zone 47rps 36rps 29rps 25rps AOU18RLXFW1 D zone 37rps 33rps 26rps 20rps E zone 37rps 33rps 26rps 20rps F zone 37rps 33rps 26rps 20rps 72rps 49rps 41rps 29rps 72rps 49rps 41rps 29rps 55rps 41rps 36rps 29rps 43rps 36rps 31rps 20rps 43rps 36rps 31rps 20rps 41rps 36rps 31rps 20rps A zone B zone C zone AOU24RLXFW1 D zone E zone F...

Page 5: ...le 2 Table 2 Compressor frequency range Minimum frequency Maximum frequency AOU18RLXFW1 14rps 67rps AOU24RLXFW1 16rps 90rps 3 DRY OPERATION 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...

Page 6: ...YES Auto change over is second or more NO NO YES NO NO AUTO CHANGEOVER operation flow chart TS Setting temperature Room temp Ts 4 F 2 C Thermostat remains in OFF state for 6 minutes or longer System stops or operation command other than auto changeover operation NO Thermostat remains in OFF state for 6 minutes or longer System stops or operation command other than auto changeover operation Middle ...

Page 7: ...n 3 COOLING OPERATION Switch the airflow AUTO and the indoor fan motor will run according to a room temperature as shown in Fig 3 On the other hand if switched in HIGH QUIET the indoor motor will run at a constant airflow of COOL operation modes QUIET LOW MED HIGH as shown in Table 4 Fig 3 Airflow change over Cooling AUTO When the room temperature rises When the room temperature drops TR Room temp...

Page 8: ...MED mode 107 6 F 42 C 86 F 30 C 93 2 F 34 C 102 2 F 39 C 98 6 F 37 C 98 6 F 37 C 89 6 F 32 C 82 4 F 28 C 01 05 Cool air prevention S Lo Indoor heat exchanger temperature rises Indoor heat exchanger temperature drops Hi Me or setting fan mode Lo or setting fan mode Lo or setting fan mode Lo or setting fan mode Lower speed is selected Indoor heat exchanger temperature rises Indoor heat exchanger tem...

Page 9: ...r the defrost 1 Outdoor Fan Motor 2 Fan Speed AC Motor DC Motor AOU18 24RLXFW1 Following table shows the type of the outdoor fan motor The control method is different between AC motor and DC motor Table 5 Type of motor AOU18RLXFW1 800rpm Fan speed Cooling Heating AOU18RLXFW1 AOU24RLXFW1 D F Zone 800 620 500 400 800 620 550 450 900 850 800 620 550 450 Refer to Fig 6 rpm 500 320 250 G H 300 230 200 ...

Page 10: ...ed from the remote controller the vertical louver starts to swing Vertical Airflow Swing Operation Horizontal Airflow Swing Operation When the swing signal is received from the remote controller the horizontal louver starts to swing Vertical and Horizontal Airflow Swing Operation When the indoor fan is S Lo or Stop mode the swing operation is interrupted and it stops at either upper end or bottom ...

Page 11: ...ION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE The minimum compressor frequency is limited by outdoor temperature as shown in the Table 11 Table 11 Limitation of compressor frewuency Cooling Dry AOU18RLXFW1 Heating 30rps 60sec 47rps 60rps 120sec 180sec 01 08 32 F 0 C 14 F 10 C 100 F 38 C 50 F 10 C Under 40rps Over Under Over Under Over Under Over 25rps 25rps 12rps 25rps 16rps 32rps Under Over ...

Page 12: ... turned on Operation mode Stop mode Set time of timer The program timer allows the OFF timer and ON timer to be used in combination one time Operation mode Operation will start from the timer setting either OFF timer or ON timer whichever is closest to the clock s current timer setting The order of operations is indicated by the arrow in the remote control unit s display SLEEP timer operation cann...

Page 13: ...ration mode When the sleep timer is set the setting temperature is increased 2 F 1 C It increases the setting temperature another 2 F 1 C after 1 hour After that the setting temperature is not changed and the operation is stopped at the time of timer setting Ts 2 F 1 C 4 F 2 C Set 60min In the heating operation mode When the sleep timer is set the setting temperature is decreased 2 F 1 C It decrea...

Page 14: ...op the air conditioner operation Press the master control button and the fan control button simultaneously for 2 seconds or more to start the test run Press the start stop button to stop the test run To end test operation press the remote controller START STOP button When the air conditioner is running by pressing the test run button the OPERATION Lamp and TIMER Lamp will simultaneously flash slow...

Page 15: ...ion Forced cooling operation Cooling Hi Horizontal OFF Room Temp is not controlled 01 12 Operation LED and timer LED blink during the forced cooling operation They blink for 1 second ON and 1 second OFF on both operation LED and timer LED same as test operation Forced cooling operation is released after 60 minutes of starting operation The FORCED COOLING OPERATION will start as shown in Table 15 W...

Page 16: ...remote controller Mode Heating Setting temperature 50 F 10 C Fan mode AUTO Table 16 Minimum heat operation 19 ECONOMY OPERATION The ECONOMY operation functions by pressing ECONOMY button on the remote controller Table 17 Economy operation Mode Cooling Dry Heating Target temperature Setting temp 2 F 1 C Setting temp 2 F 1 C 01 13 When operation was started and when the outdoor temperature rises to ...

Page 17: ...eration This setting can make the room temperature control more suitable for homes or buildings with high insulation Function Number 95 When the thermo sensor is turned ON it controls the compressor frequency at initial start to prevent overshoot in heating or cooling When room temperature is controlled by the Indoor unit sensor compressor operation is as shown in Fig 10 and 11 But adjustment is p...

Page 18: ...ndition of Integrating OFF count defrost operation Table 19 Condition of 2nd defrost operation 23 DEFROST OPERATION CONTROL Compressor integrating operation time Tn 77 F 25 C Tn Tn10 41 F 5 C Tn 42 8 F 6 C Tn Tnb 35 6 F 2 C Tn 42 8 F 6 C Tn10 Temperature of continuous operation at 10 minutes Tnb Back 5 minutes temperature Tn Outdoor heat exchanger temperature Ta Outdoor temperature More than 210 m...

Page 19: ... later 4 way valve OFF 35 sec later compressor ON Compressor integrating operation Over 210 minutes Integrating defrost Defrost Indicator Operation lamp 7 sec ON 2 sec OFF Defrost start Tn 26 6 F 3 C and after 30 minutes in the 26 6 F 3 C Compressor integrating operation Over 210 minutes Tn 23 F 5 C Compressor OFF count 40 times Less than 10 minutes 1st defrost and after 5 minutes in the 23 F 5 C ...

Page 20: ... operation integrating time lasts for more than 30 minutes OFF Defrost Flow Chart Heating operation stop Outdoor heat exchanger temperature Below 24 8 F 4 C and Compressor integrating operation Over 30 minutes Defrost start Defrost Indicator Operation lamp 7 sec ON 2 sec OFF Outdoor heat exchanger temperature Over 55 4 F 13 C or Compressor ON time Maximum 10 minutes Defrost end 2 OFF DEFROST RELEA...

Page 21: ... 2 CURRENT RELEASE CONTROL The compressor frequency is controlled so that the outdoor unit input current does not exceeds the current limit value that was set up with the outdoor temperature The compressor frequency returns to the designated frequency of the indoor unit at the time when the frequency becomes lower than the release value Table 25 Current release operation value Release value Heatin...

Page 22: ... is performed 5 HIGH TEMPERATURE RELEASE CONTROL Heating mode On heating mode the compressor frequency is controlled as following based on the detection value of the indoor heat exchanger temperature sensor Indoor heat exchange temperature Control System It returns to the normal operation 145 4 F 63 C Outdoor temperature Over than 50 F 10 C 1 or 53 6 F 12 C 2 Less than 50 F 10 C 1 or 53 6 F 12 C 2...

Page 23: ...2 TROUBLE SHOOTING R410A WALL MOUNTED type INVERTER ...

Page 24: ...s Continuous Continuous 4 times 7 times 6 times 1 times Continuous 7 times 3 times Continuous 7 times 4 times Continuous 2 times 7 times A F Voltage Error Discharge Thermistor Error Heat Ex Liquid Outlet Thermistor Error Outdoor Thermistor Error Compressor Thermistor Error 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 Continuous 8 times 4 times Current Sensor Error Continuous 8 times 6 ti...

Page 25: ... error codes may be displayed for the indoor unit connected to the remote controller 1 Stop the air conditioner operation 2 Press the SET TEMPERATURE buttons simultaneously for 3 seconds or more to start the self diagnosis 4 Press the SET TEMPERATURE buttons simultaneously for 3 seconds or more or there is no key input for 60 seconds to stop the display 3 Press the SET TEMPERATURE button to select...

Page 26: ...power supply Check the voltage of power supply Check if AC187V AC208V 10 253V AC230V 10 appears at outdoor unit terminal L1 L2 When the indoor unit cannot receive the serial signal from Outdoor unit more than 2 minutes after power ON or the indoor unit cannot receive the serial signal more than 15 seconds during normal operation 2 2 TROUBLE SHOOTING WITH ERROR CODE OK Test 4 Check serial signal Re...

Page 27: ...Check connection condition in control unit If there is loose connector open cable or miss wiring Test 3 Check the voltage of power supply Check the voltage of power supply Check if AC187V AC208V 10 253V AC230V 10 appears at outdoor unit terminal L1 L2 Test 4 Check serial signal Forward transfer signal Check serial signal Forward transfer signal Check if indicated value swings between AC30V and AC1...

Page 28: ...check if there is a disconnection of the cable When the indoor unit cannot properly receive the signal from Wired Remote Controller for 1 minute or more If it is DC12V Remote Control is failure Controller PCB is normal Replace Remote Control If it is DC 0V Controller PCB is failure Check Remote Control once again Replace Controller PCB Check Voltage at CN6 terminal 1 3 of Controller PCB Power supp...

Page 29: ...ally Erasable and Programmable Read Only Memory is a non volatile memory which keeps memorized information even if power is turned off It can change the contents electronically To change the contents it uses higher voltage than normal and it can not change a partial contents Rewriting shall be done upon erasing the all contents There is a limit in a number of rewriting Change Controller PCB Check ...

Page 30: ...ual Auto Switch is kept pressed Check ON OFF switching operation by using a meter If Manual Auto Switch is disabled on off switching replace it Test 2 Replace Controller PCB and Indicator PCB If Test 1 do not improve the symptom replace Controller PCB and Indicator PCB and execute the check operation again 02 07 Indicate or Display Outdoor Unit No indication Indoor Unit Operation lamp 3 times Flas...

Page 31: ...25 9 33 6 77 68 59 50 41 32 Temperature F 3 6 4 3 5 3 Resistance value k 122 113 104 Temperature F OK OK Test 3 Check voltage of Controller PCB DC5 0V Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor DC5 0V If the voltage does not appear replace Controller PCB and execute the check operation again BLACK BLACK BLACK BLACK 1 2 1 2 1 2 1 2 CN3 CN1 1 2 3 1 2 3 RED...

Page 32: ...B DC5 0V Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor DC5 0V If the voltage does not appear replace Controller PCB and execute the check operation again Trouble shooting 7 INDOOR UNIT Error Method Indoor Heat Ex Thermistor Error 31 7 95 39 6 86 49 7 62 9 80 3 103 3 134 2 176 0 77 68 59 50 41 32 Temperature F 17 1 20 9 25 6 Resistance value k 122 113 104 Te...

Page 33: ...ture around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation When the condition that actual frequency of Indoor Fan is below 1 3 of target frequency is continued more than 56 seconds Test 4 Replace Controller PCB If Test 1 3 do not improve the symptom replace Controller PCB Test 3 Check Indoor unit fan motor Check Indoor unit fan m...

Page 34: ...paratus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding OK OK Test 3 Check Active filter module Check Active filter module SERVICE PARTS IN...

Page 35: ...by hand when operation is off If the Fan Motor is locked replace it Check Outdoor Fan Motor Refer to Trouble shooting 19 If the Fan Motor is failure replace it Test 4 Check Compressor Check Compressor SERVICE PARTS INFORMATION 2 If Test 1 5 do not improve the symptom change Main PCB When more than normal operating current to IPM in Main PCB flows the compressor stops After the compressor restarts ...

Page 36: ...r miss wiring reset the power Test 2 Remove connector and check thermistor resistance value Thermistor characteristics Approx value If Thermistor is either open or shorted replace it and reset the power Test 3 Check voltage of Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If the voltage does not appear replace Main PCB Temperature F 32 41...

Page 37: ... it and reset the power Test 3 Check voltage of Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If the voltage does not appear replace Main PCB 17 8 26 3 20 40 0 62 6 79 1 100 9 129 8 168 6 Resistance value k 15 10 5 0 Temperature C 12 3 30 50 40 60 2 0 3 4 4 6 6 3 8 7 Resistance value k 120 100 90 80 70 Temperature C Temperature F 32 41 50...

Page 38: ...ower Test 2 Remove connector and check thermistor resistance value Thermistor characteristics Approx value If Thermistor is either open or shorted replace it and reset the power Test 3 Check voltage of Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If the voltage does not appear replace Main PCB 3 1 35 12 4 5 Temperature F 14 23 32 41 50 5...

Page 39: ...ing reset the power Test 2 Remove connector and check thermistor resistance value Thermistor characteristics Approx value If Thermistor is either open or shorted replace it and reset the power Test 3 Check voltage of Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If the voltage does not appear replace Main PCB Temperature F 4 14 23 32 41 5...

Page 40: ... Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Test 1 1 Reset Power Supply and operate Does Error indication show again When Input Current Sensor has detected 0A while Inverter Comp...

Page 41: ... Cable open check Test 2 Check the high pressure switch characteristics Switch characteristics check For the characteristics of high pressure switch refer to below OK Test 3 Replace Main PCB Change Main PCB and execute the check operation again Type of contact Characteristics of pressure switch CN90 C H Pressure Pressure switch Contact Short Open Contact Open Short 609 2 14 5 PSI 464 1 21 8 PSI 02...

Page 42: ...B IPM failure Protection stop by over current generation after inverter compressor start processing completed generated consecutively 10 times The number of generations is reset if the start up of the compressor succeeds No obstructions in air passages Heat exchange fins clogged Outdoor unit fan motor check Ambient temperature not raised by the effect of other heat sources Discharged air not sucke...

Page 43: ...pressor if the detected rotor location is out of phase with actual rotor location more than 90 the compressor stops After the compressor restarts if the same operation is repeated within 40sec the compressor stops again If and repeats 5 times the compressor stops permanently Test 1 Check Noise from Compressor Turn on Power and check operation noise If an abnormal noise show replace Compressor OK T...

Page 44: ... connector If the voltage is not correct replace Main PCB When outdoor fan rotation speed is less than 100rpm in 20 seconds after fan motor starts fan motor stops After fan motor restarts if the same operation within 60sec is repeated 3 times in a row compressor and fan motor stops If and repeats 5 times in a row compressor and fan motor stops permanently Read wire DC voltage Red Black 260 400V Wh...

Page 45: ...in PCB Test 2 Check thermistor of Indoor unit Isn t it fallen off the holder Is there a cable pinched Check characteristics of thermistor Refer to Trouble shooting 6 7 If defective replace the thermistor Indoor Unit Controller PCB Circuit Heat Exchanger Temperature Thermistor Room Temperature Thermistor 4 way valve When the indoor heat exchanger temperature is compared with the room temperature an...

Page 46: ...hanger Check for foreign object at heat exchanger Check if fan can be rotated by hand Motor check SERVICE PARTS INFORMATION 5 Test 2 Check the EEV strainer Test 5 Check the refrigerant amount Leak check EEV open Strainer clogging check before and after EEV ACM oil return Test 2 Check the EEV strainer If the 3 way valve gas side was closed open the 3 way valve gas side and check operation Test 1 Ch...

Page 47: ...k the refrigerant amount Leak check EEV open Strainer clogging check Test 2 Check the EEV strainer If the 3 way valve gas side was closed open the 3 way valve gas side and check operation Test 1 Check if 3 way valve liquid side is open If the 3 way valve liquid side was closed open the 3 way valve liquid side and check operation OK Trouble shooting 22 OUTDOOR UNIT Error Method Compressor Temp Erro...

Page 48: ...y circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding 2 3 TROUBLE SHOOTING WITH NO ERROR CODE Test 3 Check Electrical Components YES OK NO Check the voltage of power supply Check if AC187 253V appears at Outdoor Unit Terminal L1 L2 Check Varistor in Filter PCB ...

Page 49: ... apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check the voltage of power supply Check if AC187 253V appears at Outdoor Unit Te...

Page 50: ...Turn off Power and check correct followings Is there loose or removed communication line of Indoor Unit and Outdoor Unit Instant drop Check if there is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb o...

Page 51: ...oute Check clogged Heat Exchanger Is the Valve open Is capacity of Indoor Unit fitted to Room size Any windows open Or direct sunlight Check connection pipe specified pipe length Pipe diameter Check any loose or removed communication line If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check if Strainer is clogged Refer to the figure at rig...

Page 52: ... and front panel normal Is Fan broken or deformed Is the screw of Fan loose Is there any object which obstruct the Fan rotation Is Main Unit installed in stable condition Is Fan Guard installed normally Check if vibration noise by loose bolt or contact noise of piping is happening Is Compressor locked Check Compressor Water Leaking 1 Erroneous installation 2 Drain hose failure Diagnosis method whe...

Page 53: ...nction 31 Room Temperature Control for indoor unit sensor Ref Test 4 Check Function Settings Test 3 Check the remote controller display Test 2 Verity room temperature sensing location Indoor unit sensor Wired remote sensor Do you want room temperature sensed at the wired remote controller Wired remote sensor or by they build in sensor inside the unit Indoor unit sensor Test 1 2 Check effects of Fu...

Page 54: ...ress and hold down the THERMO SENSOR button to turn on the icon Ref Please reference the APPENDING DATA Using the table on the right adjust temperature correction by changing function setting 93 Room Temperature control for wired remote controller sensor Test 6 Check Function Setting Is function 48 Room temperature sensor switching set to 01 Test 4 Check the Function Setting Test 4 1 Check the Fun...

Page 55: ...ust function 30 Room Temperature Control for indoor unit sensor Ref Test 4 Check Function Settings Test 3 Check the remote controller display Test 2 Verity room temperature sensing location Indoor unit sensor Wired remote sensor Do you want room temperature sensed at the wired remote controller Wired remote sensor or by they build in sensor inside the unit Indoor unit sensor Test 1 2 Check effects...

Page 56: ...ller Press and hold down the THERMO SENSOR button to turn on the icon Ref Please reference the APPENDING DATA Using the table on the right adjust temperature correction by changing function setting 92 Room Temperature control for wired remote controller sensor Test 6 Check Function Setting Is function 48 Room temperature sensor switching set to 01 Test 4 Check the Function Setting Test 4 1 Check t...

Page 57: ...ssor due to clogged dirt or less oil Replace Compressor Replace Compressor Replace Compressor Stops soon after starting up Is there open or loose connection cable Is Gas Pipe Valve open Low Pressure is too low Check if Refrigerant is leaking Recharge Refrigerant Check if Strainer is clogged SERVICE PARTS INFORMATION 3 If there is no failure the defect of Compressor can be considered Compression pa...

Page 58: ...connection of Compressor loose or incorrect wiring Check winding resistance of each terminal If the resistance value is 0 or infinite replace Compressor If the symptom does not change with above Test 1 2 replace Main PCB Resistance Value 0 642 at 68 F 20 C R U RED S V WHITE T W BLACK IPM PCB TM303 TM304 TM305 RED WHITE BLACK Compressor Inverter PCB 02 35 ...

Page 59: ...nector Loose connector or open cable Remove connector check each winding resistance of Coil If Resistance value is abnormal replace EEV Remove Connector and check Voltage DC12V If it does not appear replace Main PCB Turn on Power and check operation noise If an abnormal noise does not show replace Main PCB When Valve is closed it has a temp difference between Inlet and Outlet If it is open it has ...

Page 60: ...oltage Vm No function No function Earth terminal GND Control voltage Vcc Speed command Vsp Feed back FG SERVICE PARTS INFORMATION 4 Test 1 Check rotation of Fan Indoor unit Fan motor Rotate the fan by hand when operation is off Check if fan is caught dropped off or locked motor If Fan or Bearing is abnormal replace it Test 2 Check resistance of Indoor Fan Motor Refer to below Circuit test Vm and G...

Page 61: ... 1 01M Ref value 1 0 76M Ref value 2 SACT32010 HITACHI LACT33020 HITACHI PM 604 FGEL PM 703 FGEL PM 601 FGEL 360k 20 0 900k 20 1 01M Ref value 1 0 76M Ref value 2 540k 20 1 65M Ref value 1 1 14M Ref value 2 LOT No 1302931396 LOT No 1302931395 PM 601 FGEL Type A Type B Table 1 Each type standard value multimeter IN N1 N IN IN N1 N is FGEL terminal name L2 P P L2 Terminal Resistance value 1 32M Ref ...

Page 62: ...ter to the Resistance mode and measure the resistance between the following terminals Set the tester to the Diode mode and measure the voltage value between the following terminals Judge the result of as follows Judge the result of as follows TM301 P TM305 U TM304 V TM303 W TM302 N TM305 U TM304 V TM303 W P P P U V W N N N U V W U V W P P P U V W N N N Over 2k Including Over 2k Including Over 20k ...

Page 63: ...3 APPENDING DATA R410A WALL MOUNTED type INVERTER ...

Page 64: ...amount of dust in the air of the room If the indication is not required select No indication 03 Function Details 1 2 Setting the Auto restart Enable or disable automatic restart after a power interruption Factory setting Setting Description Function Number Setting Value Enable Disable 40 00 01 Auto restart is an emergency function such as for power outage etc Do not attempt to use this function in...

Page 65: ...ced stop mode can be selected Factory setting Setting Description Function Number Setting Value Operation Stop mode Setting prohibited Forced stop mode 46 00 01 02 1 6 Setting the Room temperature sensor switching Aux To use the temperature sensor on the wired remote controller only change the setting to Wired remote controller 01 This function will only work if the function setting 42 is set at B...

Page 66: ...rd setting 00 will be the same as No correction 01 0 0 F 0 0 C Temperature Correction When changing Function 95 perform this setting before other Room temp control settings Function 30 31 92 93 If Function 95 is not set fi rst Room temperature control settings Function 30 31 92 93 ill be reset and you must re do them again Heat insulation conditions differ according to the installed environment St...

Page 67: ...h 01 Ensure that the Thermo Sensor icon is displayed on the remote controller screen Setting Description Function Number Setting Value No correction 0 0 F 0 0 C 1 F 0 5 C 2 F 1 0 C 4 F 2 0 C 3 F 1 5 C 5 F 2 5 C 6 F 3 0 C 7 F 3 5 C 8 F 4 0 C 1 F 0 5 C 2 F 1 0 C 3 F 1 5 C 4 F 2 0 C 5 F 2 5 C 6 F 3 0 C 7 F 3 5 C 8 F 4 0 C No correction 0 0 F 0 0 C 00 01 02 03 04 05 06 07 08 09 10 11 12 13 15 14 16 17...

Page 68: ...e Press the FAN button again to return to the Function Number selection Selecting the Function Number and Setting Value 6 Press the START STOP button It makes a signal to indoor unit Indoor unit run the setting 7 Press the RESET button to cancel the function setting mode 8 After completing the FUNCTION SETTING be sure to turn of the power and turn it on again CAUTION After turning off the power wa...

Page 69: ...ting of Fanction Number and Setting Value after setting custom code in remote controller please set custom code in remote controller again The remote control unit resets to signal code A when the batteries in the remote control unit are replaced If you use a signal code other than signal code A reset the signal code after replacing the batteries If you do not know the air conditioner signal code s...

Page 70: ... mode 1 Operate on Cooling mode and press TEST button of remote control 2 Operate continuously for 30 minutes After 60 minutes of operation Test mode is released automatically 1 Indoor Outdoor Temperature Outdoor Low Pressure Curve 2 Indoor Outdoor Temperature Outdoor Total Electric Current Curve Measure the outdoor unit overall current with the current clamp meter at Power Cable 0 7 0 8 0 9 1 0 1...

Page 71: ...equency Operation Method Test mode 1 Operate on Heating mode and press TEST button of remote control 2 Operate continuously for 30 minutes After 60 minutes of operation Test mode is released automatically 1 Indoor Outdoor Temperature Outdoor High Pressure Curve 2 Indoor Outdoor Temperature Outdoor Total Electric Current Curve 32 0 41 5 50 10 59 15 Outdoor ambient temperature 9 0 9 5 10 0 Outdoor t...

Page 72: ...ation Method Test mode 1 Operate on Cooling mode and press TEST button of remote control 2 Operate continuously for 30 minutes After 60 minutes of operation Test mode is released automatically 1 Indoor Outdoor Temperature Outdoor Low Pressure Curve 2 Indoor Outdoor Temperature Outdoor Total Electric Current Curve Measure the outdoor unit overall current with the current clamp meter at Power Cable ...

Page 73: ... Operation Method Test mode 1 Operate on Heating mode and press TEST button of remote control 2 Operate continuously for 30 minutes After 60 minutes of operation Test mode is released automatically 1 Indoor Outdoor Temperature Outdoor High Pressure Curve 2 Indoor Outdoor Temperature Outdoor Total Electric Current Curve 2 0 2 2 2 4 2 6 2 8 3 0 3 2 3 4 32 0 41 5 50 10 59 15 High pressure of outdoor ...

Page 74: ...131 0 140 0 149 0 158 0 167 0 176 0 185 0 194 0 203 0 212 0 221 0 230 0 239 0 248 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 85 0 90 0 95 0 100 0 105 0 110 0 115 0 120 0 22 0 13 0 4 0 5 0 14 0 23 0 32 0 41 0 50 0 59 0 68 0 77 0 86 0 95 0 104 0 113 0 122 0 131 0 140 0 149 0 158 0 167 0 176 0 185 0 194 0 203 0 212 0 221 0 230 0 2...

Page 75: ...65 0 70 0 75 0 80 0 95 58 68 90 50 31 37 19 27 81 21 02 16 05 12 38 9 63 7 56 5 98 4 77 3 84 3 11 2 53 2 08 1 71 1 42 1 19 1 00 0 84 0 71 0 61 0 24 0 32 0 43 0 57 0 73 0 92 1 14 1 39 1 65 1 93 2 21 2 49 2 77 3 02 3 26 3 48 3 68 3 85 4 00 4 13 4 25 4 35 4 43 Outdoor heat exchanger thermistor 224 33 159 71 115 24 84 21 62 28 46 58 35 21 26 88 20 72 16 12 12 64 10 00 7 97 6 40 5 18 4 21 3 45 2 85 2 3...

Page 76: ...Jan 2016 Printed in Japan 3 3 17 Suenaga Takatsu ku Kawasaki 213 8502 Japan ...

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