Fujitsu AUXG30LRLB Service Instruction Download Page 27

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1-21. VARIOUS PROTECTIONS

1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENTION 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 10rps(30,36) 14rps(45,54), and it continues to decrease the frequency for 10/14rps every

120 seconds until the temperature becomes lower than Temperature .

When the discharge temperature becomes lower than Temperature , the control of

the compressor frequency is released.
When the discharge temperature becomes higher than Temperature ,the compressor is stopped

and the indoor unit LED starts blinking.

(Table16 : Discharge Temperature Over Rise Prevention Control / Release Temperature)

01-24

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.

2. CURRENT RELEASE CONTROL

30LBTA

36LBTA

104°C

101°C

110°C

Temperature

30,36LBTA
45,54LBTA

[ Heating ]

T0 : Outdoor Temperature

[ Cooling ]

T0 (Control / Release)

9.0A / 8.5A

10.0A / 9.5A

12.5A / 12.0A

14.5A / 14.0A

T0 : Outdoor Temperature

[ Cooling ]

T0 (Control / Release)

9.0A / 8.5A

10.0A / 9.5A

13.0A / 12.5A

16.5A / 16.0A

T0 : Outdoor Temperature

T0 (Control / Release)

10.0A / 9.5A

11.5A / 11.0A

14.5A / 14.0A

17°

12°

5°

[ Heating ]

T0 : Outdoor Temperature

T0 (Control / Release)

10.0A / 9.5A

11.5A / 11.0A

16.0A / 15.5A

18.0A / 17.5A

17°

12°

5°

45,54LBTA

(Table 17 : Current Release Operation Value / Release Value)

(Control / Release)

[Heating]

900/880rpm 850/830rpm 780/750rpm 720/700rpm 570/550rpm 500/480rpm 370/350rpm 300/280rpm 220/200rpm

20°C < Ta

14.5A/14.0A
16.5A/16.0A
19.5A/19.0A

Outdoor unit fan speed (UP / LO)

Ta < 12°C

12°C < Ta < 20°C

Ta : Outdoor Temperature

MODEL

Summary of Contents for AUXG30LRLB

Page 1: ...e type Models Indoor unit Outdoor unit AUXG30LRLB AUXG36LRLB AUXG45LRLB AUXG54LRLB AO G30LBTA AO G36LBTA AO G45LBTA INVERTER SERVICE INSTRUCTION R410A AO G54LBTA RCG30LRLB RCG36LRLB RCG45LRLB RCG54LRLB ROG30LBTA ROG36LBTA ROG45LBTA ROG54LBTA ...

Page 2: ... 3 MINUTES 3 MINUTES ST 01 17 1 13 4 WAY VALVE EXTENSION SELECT 01 17 1 14 AUTO RESTART 01 18 1 15 PUMP DOWN 01 18 1 16 COMPRESSOR PREHEATING 01 20 1 17 10 C HEAT OPERATION 01 20 1 21 VARIOUS PROTECTIONS 01 24 1 22 LOW NOISE OPERATION 01 27 1 24 HUMAN SENSOR OPTION 01 28 1 20 OFF DEFROST OPERATION CONTROL 01 23 1 19 DEFROST OPERATION CONTROL 01 21 1 18 ECONOMY OPERATION 01 20 1 23 PEAK CUT OPERATI...

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

Page 4: ...n the range shown in Fig 1 based on the fan speed mode and the outdoor temperature minimum frequency maximum frequency 16rps 90rps 30 36LBTA 16rps 100rps 45LBTA 16rps 110rps 54LBTA Hi Me Lo Qu 72rps 65rps 50rps 44rps 39rps 59rps 50rps 50rps 44rps 35rps 39rps 39rps A zone B zone C zone D F zone 30 36LBTA Table 1 Compressor Frequency Range Fig 1 Limit of Maximum Frequency based on Outdoor Temperatur...

Page 5: ...s lower 6 0 C than a set temperature the compressor operation frequency will attain to maximum performance If the room temperature is higher 1 0 C than a set temperature the compressor will be stopped When the room temperature is between 1 0 C to 6 0 C of the setting temperature the compressor frequency is controlled within the range shown in Table2 Table 2 Compressor Frequency Range minimum frequ...

Page 6: ...ed as shown in the Table 3 Table 3 Compressor frequency Fig 2 Compressor Control based on Room Temperature 01 03 Ts Setting temperature Ts 0 5 C Ts 1 5 C Operating frequency 39rps X zone J 30 36LRLB zone 0rps 44rps 0rps Y zone Room Room temperature temperature X zone J zone Y zone Ts 1 5 C Ts 0 5 C Fig 3 Indoor Fan Control 10 30 60 360 120 360 120 10 30 sec OFF S Lo Lo OFF Setting air flow Compres...

Page 7: ...g When the compressor was stopped for 6 consecutive minutes by the temperature control function after the Cooling or Heating mode was selected at above operation is switched to Monitoring and the operation mode is selected again When the middle zone is selected on the predetermining of the operation mode the operation mode before the changing to the monitor mode is selected 1 2 3 1 Fig 4 Outdoor t...

Page 8: ... 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 zone NO NO Operation mode of outdoor unit Cooling YES NO Operation mode of outdoor unit Heating YES NO YES Outdoor temperature 25 C NO YES YES YES NO YES YES Operation mode before t...

Page 9: ...W the indoor motor will run at a constant airflow of COOL operation modes LOW MED HIGH as shown in Table 5 Fig 5 Airflow change over Cooling AUTO When the room temperature rises When the room temperature drops TR Room temperature Ts Setting temperature TR Ts 2 C 1 C TR Ts 2 C TR Ts 1 C TR Ts 2 5 C 1 5 C TR Ts 2 5 C TR Ts 1 5 C HIGH mode MED mode LOW mode 1 1 Contains a condition to the following W...

Page 10: ...COOL AIR PREVENTION CONTROL Heating mode The maximum value of the indoor fan speed is set as shown in Fig 7 based on the detected temperature by the indoor heat exchanger sensor on heating mode When the compressor does not operate the indoor fan motor operates S Lo or Stop mode Fig 7 Cool Air Prevention Control Cool air prevention S Lo 42 C 30 C 34 C Indoor heat exchanger temperature rises Indoor ...

Page 11: ...tdoor unit is stopped the indoor unit fan operates intermittently at a very low speed 02 Enable or disable this function by remote controller setting Set to 00 or 01 when connecting a remote controller that cannot set the Fan control for energy saving function or connecting a network converter To confirm if the remote controller has this setting refer to the operating manual of each remote control...

Page 12: ...eration Setting of the wireless remote controller is not displayed on the wired remote controller The setting louver of the individual control function cannot be controlled Cooling mode standard position 2 Dry mode standard position 2 When the mode is selected the standard louver position of the each mode is set Monitor mode position 2 Heating standard position Model 30 36 4 Model 45 54 3 The air ...

Page 13: ...300 250 200 900 850 800 620 550 450 900 850 800 620 550 450 850 800 620 550 500 450 400 320 300 250 200 Cooling Heating 30LBTA 850 800 780 750 750 700 540 520 360 340 290 270 480 0 400 0 350 0 280 0 Upper fan Lower fan 45 54LBTA After operating the defrost control function on heating mode except economy operation its speed becomes 900 Lower 880 rpm regardless of the compressor speed However it ret...

Page 14: ...pper limit speed sec Elapsed time 30 60 47 60 180 rps Upper limit speed sec Elapsed time Normal start up Coolling Dry Immediate start up after power ON Heating 240 30 36LBTA 1 OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in Table 7 Coolin Dry Heating Min Max Table 7 Compressor Operation Frequency Range 30 36LBTA 16rps 90rps 0...

Page 15: ...imit speed 200 700 840 1 010 sec rps 39 57 68 85 Condition Condition Upper limit speed 90 210 270 300 sec rps 39 57 68 85 1 OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode shown in Table 8 Cooling i g n i t a e H Min Max Min Max Table 8 Compressor Operation Frequency Range 16rps 100rps 45LBTA 54LBTA 16rps 110rps 16rps 110rps 16rps 110rps...

Page 16: ...s only The OFF time can be carried over to next day The ON timer and the OFF timer functions cannot be set with using the weekly timer Both ON and OFF time must be set 2 WEEKLY TIMER 2 1 WEEKLY TIMER Stop mode Stop mode Stop mode Operation mode Operation mode Set time Set time Set time Set time 01 13 UTY RNR Z1 2 wire remote controller 1 9 1 Wired Remote Controller ON TIMER 3 wire remote controlle...

Page 17: ...t day has passed Normal Next day setting If the operating time carries over to the next day during a next day setting the effective DAY OFF range will be set as shown below 2 2 DAY OFF setting Stop mode Stop mode Operation mode Stop mode Operation mode Preceding day Next day DAY OFF Stop mode Stop mode Operation mode Stop mode Operation mode DAY OFF Setting day Preceding day Next day Setting day ...

Page 18: ... SLEEP 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 cannot be combined with ON timer operation St...

Page 19: ...tion In the COOLING operation mode When the sleep timer is set the setting temperature is increased 1 degC It increases the setting temperature another 1 degC after 1 hour After that the setting temperature is not changed and the operation is stopped at the time of timer setting Ts 1 C 2 C 2 C 1 C 4 C 3 C Set 60min In the HEATING operation mode When the sleep timer is set the setting temperature i...

Page 20: ...s switched in 3 minutes later after the compressor stopped 1 12 PREVENT TO RESTART FOR 3 MINUTES 3 MINUTES ST 1 13 4 WAY VALVE EXTENSION SELECT 01 17 30 36LBTA 45 54LBTA 1 11 TEST OPERATION CONTROL Touch the Test run in the Maintenance screen The Test Run screen is displayed Touch OK to return to the Maintenance screen and start the test run The test run will automatically end is approximately 60 ...

Page 21: ... timer operation timer operation is canceled but only setting time is memorized Operation contents memorized when the power is interrupted Operation mode Air flow direction Swing setting Individual air flow direction Swing setting Human sensor auto saving setting timer Human sensor auto off setting timer Energy saving setting Set temperature Set air flow Timer mode and timer time Set by wireless r...

Page 22: ...ights on as shown in the above ﬁgure and the fans and the compressor start operating e h t g n i t a r e p o s i r o s s e r p m o c e h t e l i h w d e s s e r p s i n o t t u b N W O D P M U P e h t f I compressor will stop then start again in about 3 minutes 4 LED display will change as shown below about 3 minutes after the compressor starts Fully close the 3 way valve on the liquid pipe side a...

Page 23: ...ded 1 17 10 C HEAT OPERATION The 10 C HEAT operation The 10 C HEAT The 10 C HEAT operation can be set by the wireless remote controller functions by pressing 10 C HEAT button on the remote controller operation is almost the same operation as below settings Mode Heating Setting temperature 10 C Fan mode AUTO Table9 1 18 ECONOMY OPERATION The ECONOMY operation functions by pressing ECONOMY button on...

Page 24: ... the following Table 11 12 and 13 From 2nd and later defrost after starting operation Less than 35 minutes More than 35 minutes Does not operate Compressor integrating operation time Table 11 Condition of 1st defrost operation 1st defrost after starting operation Compressor integrating operation time Less than 22 minutes More than 22 minutes More than 62 minutes Does not operate Outdoor heat excha...

Page 25: ...es Compressor integrating operation Over 62 minutes Outdoor heat exchanger temp Below 9 C Outdoor heat exchanger temp Below 5 C Compressor integrating operation Over 35 minutes 2nd and later defrost Compressor OFF Outdoor fan motor OFF 30 sec later 4 way valve OFF 36 sec later compressor ON Compressor integrating operation Over 240 minutes Integrating defrost Constant monitoring Defrost Indicator ...

Page 26: ... than 4 C and compressor operation integrating time lasts for more than 30 minutes OFF Defrost Flow Chart Heating operation stop Outdoor heat exchanger temp Below 4 C and Compressor integrating operation Over 30 minutes Defrost start Defrost Indicator Operation lamp 7 sec ON 2 sec OFF Outdoor heat exchanger temp Over 12 C or Compressor ON time Maximum 15 minutes Defrost end 2 OFF DEFROST RELEASE C...

Page 27: ... 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 2 CURRENT RELEASE CONTROL 30LBTA 36LBTA 104 C 101 C 110 C Temperature Temperature Temperature 30 36LBTA 45 54LBTA Heating T0 Outdoor Temperature Cooling T0 Control Release 9 0A 8 5A 10 0A 9 5A 1...

Page 28: ...pressor is OFF The compressor frequency is decreased 7rps every 120seconds Release of protection 45 54LBTA 45 54LBTA 67 C Outdoor heat exchange temperature Compressor is OFF 3 minutes stop Release of protection 30 36LBTA After 60sec temp detection starts Ta Outdoor Temperature Control Release Cooling 850 800rpm 780 750rpm 750 700rpm 540 520rpm 360 340rpm 290 270rpm 480 0rpm 350 0rpm 280 0rpm 400 0...

Page 29: ...ssure value becomes more than 0 78MPaG this protection is released 0 05MPaG 0 02MPaG Release of protection Hold Compressor stop Pressure Fig 12 Low pressure protection 1 Hold 5 1 Low Pressure Protection 1 5 2 Low Pressure Protection 2 20 C Cooling Heating When the detection value of outdoor temperature sensor is lower than temperature in the table below the compressor is stopped Table 19 Operation...

Page 30: ...ching 2 Level 2 setting Shortage Enough eed are limited to reduce the operation noise by External Input During the LOW NOISE OPERATION CURRENT OVERLOAD OPERATION ECONOMY OPERATION and PEAK CUT OPERATION are effective and the outdoor unit operates by lowest current of them However during the DEFROST OPERATION the compressor operates by the speed for DEFROST OPERATION Table 20 Detail of Low Noise Op...

Page 31: ...y Heat Operation details if there is no one in the room for a while The set temperature will be increased by a maximum of approximately 2 C The set temperature will be decreased by a maximum of approximately 2 C If no one enters the room during the set time 15 30 60 90 120 180 minutes the set If no one enters the room during the set time 1 to 24 hours in 1 hour increments the air conditioner will ...

Page 32: ...ss than 3 minutes the unit starts Cooling operation 1 2 1 When the water level in the drain pan rises up and then the float switch functions Drain pump operates continuously for 3 minutes after the float switch is turned off Almost condensing water may be drained 2 When the float switch turns ON continuously for 3 minutes FAILURE INDICATION operates Thereafter even if the float switch turns OFF th...

Page 33: ...Lights on during Peak cut mode when local setting is activated Lighting pattern of L4 L5 and L6 indicates peak cut level SW1 SW2 SW3 SW4 SW5 1 2 3 4 5 LED DISPLAY Various settings can be adjusted by changing Push switches on the board of the outdoor unit Excerpt from the INSTALATION MANUAL Switch Function or operation method SW1 To switch between Local setting and Error code display SW2 To switch ...

Page 34: ...ion Power Mode Error L1 L2 L6 L5 L4 L3 1 2 3 4 During status display press the MODE SWITCH 1 time Status display Outdoor unit is stopping and no error When the EXIT SWITCH is pressed this mode ends and returns to the status display Selecting display items can be done by pressing the SELECT SWITCH Return to Procedure 3 Press the ENTER SWITCH Data is displayed by lighting LED Refer to Table 24 When ...

Page 35: ...sure sensor value Low pressure range 0 2 1MPa Pressure sensor value High pressure range 2 1 4 2MPa Check the Low Pressure Range if it is displayed 2 1 Check the High Pressure Range if it is displayed 1 81 2 1 0 1 15 16 30 31 45 46 60 61 75 76 90 90 95 0 1 150 151 300 301 450 451 600 601 750 751 900 901 0 1 150 151 300 301 450 451 600 601 750 751 900 901 0 1 80 81 160 161 240 241 320 321 400 401 48...

Page 36: ...scharge Temperature 30 120 C Heat exchanger Temperature Middle 30 80 C Current 0 10A Compressor Accumulated Time H 15 15 5 5 5 5 15 15 25 25 35 35 45 45 55 55 65 65 75 75 85 85 95 95 105 105 115 115 53 53 55 55 57 57 59 59 61 61 63 63 65 65 0 0 0 0 1 5 1 5 3 0 3 0 4 5 4 5 6 0 6 0 7 5 7 5 9 0 9 0 0 0 10000 10000 20000 20000 30000 30000 40000 40000 50000 50000 60000 60000 7 8 9 01 33 Round up by 1 h...

Page 37: ...ECT SWITCH Return to Procedure 3 Press the ENTER SWITCH Error code is displayed by lighting LED Refer to TROUBLESHOOTING When the POWER MODE LED blinking 2 times press the ENTER SWITCH Light ON Light OFF Blinking 2 2 Times Blinking n n Times Blinking 1 26 3 Error history mode Error L1 L2 L6 L5 L4 L3 2 2 2 2 2 5 Press the SELECT SWITCH and adjust to DISPLAY ITEM from L1 to L3 that you want to confi...

Page 38: ...2 TROUBLE SHOOTING R410A Cassette type INVERTER ...

Page 39: ...or 2 Error 4 way Valve Error Discharge Temp Error Compressor Temp Error Low Pressure Error Active filter voltage error 1 If an error occurs an error icon appears on the Monitor mode screen Touch the Status on the Monitor mode screen The Status screen is displayed 2 Touch the Error Information on the Status screen The Error Information screen is displayed If there are no errors the Error Informatio...

Page 40: ...alve Error Discharge Temp Error Compressor Temp Error Low Pressure Error 2 2 2 2 2 2 2 2 2 2 1 5 6 3 6 5 7 1 20 7 2 7 3 7 4 7 7 8 4 8 6 9 4 9 5 9 7 9 8 9 9 0 1 1 0 1 3 0 1 5 5 1 Heat Ex Liquid Outlet Thermistor Error LED DISPLAY PUMP DOWN LOW NOISE PEAK CUT Trouble shooting 1 2 17 19 21 22 23 24 25 26 27 28 29 30 31 32 33 34 1 15 1 15 1 15 Times Blinking Light ON F F O t h g i L 2 2Times Blinking ...

Page 41: ...ol unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC198V AC220V 10 264V AC240V 10 appears at outdoor unit terminal L N When the indoor unit cannot receive the serial signal from Outdoor unit more than 2minutes after power ON or the indoor unit cannot receive the serial signal more than 15seconds d...

Page 42: ...utdoor unit If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check connection condition in control unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC198V AC220V 10 268V AC240V 10 appears at outdoor unit terminal L N Check Point 4 Check serial...

Page 43: ...Remote Controller for 1 minute or more If it is DC13V 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 Ceck Voltage at CN14 of Controller PCB Terminal 1 3 Terminal 1 2 Power supply for the Remote Control Indicate or Display Error code 12 POWER MODE ERROR 2 5 L1 L2 L6 L5 L4 L3 15...

Page 44: ...ller PCB If there is loose connector open cable or mis wiring the same a signal has not been received for 15sec After receiving a signal from the external I O PCB 1 Connection failure 2 External I O PCB failure 3 Controller PCB failure Check Point 1 Check the connection Check Point 2 Replace external I O PCB If Check Point 1 do not improve the symptom change External I O PCB OK OK Check Point 3 Re...

Page 45: ...r units is incorrect Check Point 1 Check the type of indoor unit Check the type of the connected indoor unit If abnormal condition is found correct it Check Point 2 Replace Main PCB If Check Point 1 do not improve the symptom replace Main PCB of Outdoor unit Indicate or Display Error code 23 POWER MODE ERROR 2 5 6 L 2 L 1 L L5 L4 L3 15 PUMP DOWN LOW NOISE PEAK CUT 02 07 Outdoor unit Model 45 54 ...

Page 46: ...wire connection in RCgroup Please refer to the installation manual Change controller PCB and check the Error after setting remote controller address Check if controller PCB damage Check Point 2 Wrong RCgroup setting The given address number by auto setting 00 and the manual set number Except 00 were not existing in one RCG The remote controller address setting by U I were not existing same address...

Page 47: ...f specified rule Forecast of Cause 1 Wrong wiring Number of I U RC in RCgroup 2 Indoor unit controller PCB defective Check Point 1 Wire installation Wrong number of connecting indoor unit Check Point 2 Check Indoor unit controller PCB Check if controller PCB damage Check if controller PCB and check the Error after setting remote controller address Indicate or Display Error code 29 POWER MODE ERROR...

Page 48: ...ectronic equipment which causes harmonic wave Note EEPROM EEPROM Electronically 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 cont...

Page 49: ...PCB failure Check Point 1 Check the Manual Auto Switch Check if Manual 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 Check Point 2 Replace Controller PCB and Indicator PCB If Check Point 1 do not improve the symptom replace Controller PCB and Indicator PCB and execute the check operation again 02 11 Indic...

Page 50: ...controller PCB defective 1 Communication PCB defective Check Point 1 Check the connection of terminal Indoor unit Check the connection the communication PCB and the controller PCB After turning off the power supply check correct the followings If the Check point 1 is ok replace the communication PCB Indicate or Display Error code 3A POWER MODE ERROR 2 5 6 L 2 L 1 L L5 L4 L3 15 PUMP DOWN LOW NOISE ...

Page 51: ...e is open Reset Power when reinstalling due to removed connector or incorrect wiring 6 5 8 0 10 0 12 5 15 8 20 2 25 9 33 6 3 59 4 35 5 3 Resistance value k OK OK Check Point 3 Check Voltage of Controller PCB DC 5 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 agai...

Page 52: ...7 39 6 49 7 62 9 80 3 103 134 176 17 1 20 8 25 6 Resistance value k Temperature C Temperature C 0 40 45 50 5 10 15 20 25 30 35 Resistance value k Check Point 2 Remove connector and check Thermistor resistance value Thermistor Characteristics Rough value If Thermistor is either open or shorted replace it and reset the power OK OK Check Point 3 Check voltage of Controller PCB DC5 0V Make sure circui...

Page 53: ...ck Check if connector is loose or removed Check erroneous connection Check if sensor cable is open Reset Power when reinstalling due to removed connector or incorrect wiring OK Sensor connections error OK Sensor signal error Disconnect the sensor and check the 2 3pin on sensor connector With conduction Main PCB failure Without conduction Sensor failure Check Point 2 Voltage check Disconnect the se...

Page 54: ...Fan or Bearing is abnormal replace It Check excessively high temperature around the motor if there is any surrounding equipment that causes heat Upon the temperature coming down restart operation When the fan motor speed is less than 1 3 of the target fan speed for 56 seconds When detect the 0 rpm for 56 seconds after fan motor started Check Point 4 Replace Power Supply PCB If Check Point 1 3 do n...

Page 55: ...Hose clogging Check Point 2 Check Connector and Wire Check loose contact of CN9 and shorted wire pinched wire Replace Float switch if the wire is abnormal OK Check Point 3 Check Drain Hose Check Drain Hose If there is Hose clogging Please clear the clog 02 17 Indicate or Display Error code 53 POWER MODE ERROR 2 5 6 L 2 L 1 L L5 L4 L3 15 PUMP DOWN LOW NOISE PEAK CUT Outdoor unit Model 45 54 Check P...

Page 56: ...et Power Supply and operate Does Error indication show again Check Point 1 2 Check external cause Check if temporary voltage drop was not generated Check if momentary open was not generated Check if ground is connection correctly or there are no related cables near the power line Change Main PCB Access to EEPROM failed due to some cause after outdoor unit started 02 18 Indicate or Display Error co...

Page 57: ...tly or there are no related cables near the power line Check Point 2 Check the wiring Power supply to Filter PCB to Inverter PCB Connector and wiring connection state check Cable open check Replace Filter PCB and Inverter PCB Check Point 1 1 Turn the power on again Error displayed again Check Point 3 Replace Filter PCB INV and Inverter PCB 02 19 Trouble shooting 17 Detective Actuators Detective de...

Page 58: ...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 or electric equipment that may cause harmonic wave Check the complete insulation of grounding OK Check Point 5 Replace Mai...

Page 59: ...tion circuit Is there any clogging of Outdoor Heat Exchanger Is the Fan rotating by hand when operation is off If the Fan Motor is locked replace it Check Outdoor Fan Motor Refer to Trouble shooting 29 30 If the Fan Motor is failure replace it Check Point 4 Check Compressor PARTS INFORMATION 2 Check Compressor If Check Point 1 5 do not improve the symptom change Main PCB When more than normal oper...

Page 60: ...mation 8 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB 30 36 CN63 1 2 45 54 CN62 1 2 voltage value 5V Remove the thermistor from Main PCB check the voltage If the voltage does not appear replace Main PCB and execute the check operation again 02 22 Trouble shooting 20 Detective Actuators Detective details OUTDOOR UNIT Error Method Forecast of Cause Indicate or Display Error code 71 POWER ...

Page 61: ...ation 8 Check Point 3 Check voltage of Main PCB DC5 0V Main PCB 30 36 CN64 1 3 45 54 CN62 3 4 voltage value 5V Remove the thermistor from Main PCB check the voltage If the voltage does not appear replace Main PCB and execute the check operation again 02 23 Trouble shooting 21 Detective Actuators Detective details OUTDOOR UNIT Error Method Forecast of Cause Indicate or Display Error code 72 POWER M...

Page 62: ...C5 0V Main PCB 30 36 CN65 1 3 45 54 CN63 1 2 voltage value 5V Remove the thermistor from Main PCB check the voltage If the voltage does not appear replace Main PCB and execute the check operation again If the voltage does not appear 02 24 Heat Ex Outlet Temp Thermistor Error Trouble shooting 22 Detective Actuators Detective details OUTDOOR UNIT Error Method Forecast of Cause POWER MODE ERROR 2 2 7...

Page 63: ...3 Check voltage of Main PCB DC5 0V Remove the thermistor from Main PCB check the voltage If the voltage does not appear replace Main PCB and execute the check operation again If the voltage does not appear replace Main PCB 02 25 Trouble shooting 23 Detective Actuators Detective details OUTDOOR UNIT Error Method Forecast of Cause Indicate or Display Error code 74 POWER MODE ERROR 2 7 6 L 2 L 1 L L5...

Page 64: ...oting 24 Detective Actuators Detective details OUTDOOR UNIT Error Method Forecast of Cause If this error is displayed replace Main PCB Indicate or Display Error code 77 POWER MODE ERROR 2 7 6 L 2 L 1 L L5 L4 L3 7 PUMP DOWN LOW NOISE PEAK CUT Attention This unit does not have a heat sink themistor In this case replace Main PCB Outdoor unit Model 45 54 ...

Page 65: ... 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 or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check Point 1 1 Reset Power Supply and operate Does Error indicati...

Page 66: ...nnection state check Cable open check Check Point 2 Check the high pressure switch characteristics Switch characteristics check For the characteristics of high pressure switch refer to below Check Point 3 Replace Main PCB Change Main PCB and execute the check operation again 02 28 Pressure Sencer Error Type of contact Characteristics of pressure switch C H Pressure Pressure switch 1 4 2 0 1MPa 3 2...

Page 67: ...se of ambient temperature 2 Main PCB 3 Inverter compressor failure lock winding short 4 Transistor PCB IPM failure Protection stop by overcurrent 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 mot...

Page 68: ...RTS INFORMATION 2 For Compressor Terminal Main PCB While running the compressor 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 Check Point 1 Check Noise from Compressor Turn on Po...

Page 69: ...nit circuit diagram and the voltage Measure at Main PCB side 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 ...

Page 70: ...outdoor unit circuit diagram and the voltage Measure at Main PCB side 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 f...

Page 71: ...ace 4 way valve OK OK Check Point 4 Replace Main PCB If Check Point 1 3 do not improve the symptom replace Main PCB Check Point 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 12 13 If defective replace the thermistor Indoor Unit Controller PCB Circuit Heat Exchanger Temperature Thermistor Room ...

Page 72: ...rts Information 3 4 Check Point 3 Check the outdoor unit fan heat exchanger Check for foreign object at heat exchanger Check if fan can be rotated by hand Motor check PARTS INFORMATION 5 Check Point 2 Check the EEV strainer Check Point 5 Check the refrigerant amount Leak check EEV open Strainer clogging check before and after EEV ACM oil return Refer to Service Parts Information 3 Check Point 2 Ch...

Page 73: ...OK Heating operation Check Point 1 Check if 3 way valve gas side is open EEV open Strainer clogging check before and after EEV ACM oil return Refer to Service Parts Information 3 Check Point 2 Check the EEV strainer EEV open Strainer clogging check before and after EEV ACM oil return Refer to Service Parts Information 3 Check Point 2 Check the EEV strainer If the 3 way valve gas side was closed op...

Page 74: ...iner not clogged Check Point 4 Check the outdoor unit EEV strainer clogging Indoor unit EEV operation check Strainer not clogged strainer Pressure sensor characteristics check For the characteristics of the suction pressure sensor PARTS INFORMATION 9 Check Point 6 Check the suction pressure sensor Check Point 7 Check the refrigerant amount Leak check 02 36 n o i t a r e p o g n i t a e H n o i t a...

Page 75: ... 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 02 37 2 3 TROUBLE SHOOTING WITH NO ERROR CODE Check Point 3 Check Electrical Components YES YES OK NO Check the voltage of power supply Check if AC198 264V appears at Outdoor Unit Terminal L N Ch...

Page 76: ... 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 or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check the voltage of power supply Check if AC198 264V appear...

Page 77: ...al Manual 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 N...

Page 78: ...any objects that obstruct the air flow route 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 Strain...

Page 79: ...on grille 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 PARTS INFORMATION 1 2 Water Leaking 1 Erroneous installation 2 Drain ho...

Page 80: ...mpressor 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 PARTS INFORMATION 3 If there is no failure the defect of Compressor can be considered Compression part b...

Page 81: ...tion 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 Check 1 2 replace Main PCB 02 43 Resistance Value U RED V WHITE W BLACK Transistor PCB TM303 W TM304 V TM305 U RED WHITE BLACK Compressor Inverter PCB 0 43 at 20 C 45 54 0 64 at 20 C 30 36 ...

Page 82: ...or 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 no temp difference b...

Page 83: ... Pin number wire color Terminal function symbol 1 Red 2 3 Black 4 White 5 Yellow DC voltage Vm No function Earth terminal GND Control voltage Vcc Speed command Vsp 6 Brown Feed back FG Feed back FG SERVICE PARTS INFORMATION 4 Check Point 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...

Page 84: ...ef value 2 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 B e p y T A e p y T Table 1 Each type standard value multimeter IN N1 N IN IN N1 N is FGEL terminal name L2 P P L2 Terminal Resistance ...

Page 85: ...ng 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 U V W N U V W U V W P U V W N Over 2k Including Over 2k Including Over 20k Including Terminal Tester display Tester Tester P U V W N U V W U V W P U V W N 0 3V 0 7V...

Page 86: ...7 6 6 0 4 8 3 8 2 5 1 7 1 2 105 4 58 2 44 0 33 6 25 9 20 2 15 8 12 5 10 0 8 0 5 3 3 6 27 4 20 7 15 8 12 2 9 5 7 5 5 9 4 7 3 8 2 5 1 7 1 2 0 8 0 6 0 4 0 3 Applicable Thermistors Discharge temp TH Compressor temp TH Outdoor temp TH Heat sink temp TH Heat exchanger TH SERVICE PARTS INFORMATION 9 Pressure Sensor Check Point Check Voltage from Main PCB DC With the connector connected to the PCB measure...

Page 87: ...3 3 17 Suenaga Takatsu ku Kawasaki 213 8502 Japan Aug 2015 Printed in Japan ...

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