Toshiba MML-AP0074NH-E Service Manual Download Page 119

Page: 119 / 132

No. Part name

Procedure

Remarks

Electrical parts 1) Remove screw for Terminal cover (UP).

Box assembly

(E-box)

2) Remove screw for LED base.

NOTE

Take off control wire and wired remote
controller wire before it removes E-box

cover. Otherwise, defective control might
be caused.

3) Remove screw for E-box cover.

4) Remove damper motor connector, flow

selector connector and TA sensor from
pipe cover (F).

5) Take off damper motor connector.

6) Remove screw for pipe cover (F).

(3 pcs)

7) Remove screw for drain guide (UP).

118

4) TA sensor

4) Flow selector
connector

4) Damper

Pipe cover (F)

6) Screw for
pipe cover (F)
(3pcs)

7) Screw for
drain guide (UP)

Drain guide (UP)

motor connector

1) Screw for Terminal cover (UP)

3) Screw for Terminal cover

Terminal cover (UP)

Terminal cover

Summary of Contents for MML-AP0074NH-E

Page 1: ...R MML AP0154NH E TR MML AP0184NH E TR This Service Manual describes contents of the new Console indoor unit For the outdoor unit refer to the Manual with FILE NO A10 005 A07 004 A05 015 The service parts will be supplied byTCTC Leading Innovation SERVICE MANUAL AIR CONDITIONER MULTI TYPE ConsoleType ...

Page 2: ...TERNAL VIEWS 15 4 WIRING DIAGRAM 16 5 PART RATING 17 6 REFRIGERATING CYCLE DIAGRAM 34 7 CONTROL OUTLINE 35 8 CONFIGURATION OF CONTROL CIRCUIT 42 9 APPLIED CONTROL 48 10 TROUBLESHOOTING 60 11 OWNNER S MANUAL 85 12 INSTALLATION MANUAL 96 13 P C BOARD EXCHANGE PROCEDURES 111 14 DETACHMENTS 116 15 EXPLODED VIEWS AND PARTS LIST 127 1 ...

Page 3: ...ch matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work The qualified installer who is allowed to work atheights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or alternatively he or she has been instructed in such matters by an individual or ...

Page 4: ...ectric shock Work done at heights 50 cm or more Helmets for use in industry Transportation of heavy objects Shoes with additional protective toe cap Repair of outdoor unit Gloves to provide protection for electricians and from heat Indication Explanation DANGER Indicates contents assumed that an imminent danger causing a death or serious injury of the repair engineers and the third parties when an...

Page 5: ...l remote electric power supplies before servicing WARNING Moving parts Do not operate unit with grille removed Stop the unit before the servicing CAUTION Do not touch the aluminium fins of the unit Doing so may result in injury WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing WARNING Moving parts Do not operate unit with grille removed Stop the unit be...

Page 6: ...ric shock Do not touch the aluminum fin of the unit You may injure yourself if you do so If the fin must be touched for some reason first put on protective gloves and safety work clothing and then proceed Do not climb onto or place objects on top of the outdoor unit You may fall or the objects may fall off of the outdoor unit and result in injury When transporting the air conditioner wear shoes wi...

Page 7: ... of the capacitor takes about five minutes Prohibition Place a Work in progress sign near the circuit breaker while the installation maintenance repair or removal work is being carried out There is a danger of electric shocks if the circuit breaker is set to ON by mistake Before operating the air conditioner after having completed the work check that the front panel of the indoor unit andservice p...

Page 8: ... Failure to purge the air completely may cause the air conditioner to malfunction Do not charge refrigerant additionally If charging refrigerant additionally when refrigerant gas leaks the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant overthe specified standard amount is charged and an abnormal high pressure is appli...

Page 9: ...re is leak of refrigerant at connecting section of pipes the air is sucked and causes further abnormal high pressure resulted in burst or injury Check after reinstallation Only a qualified installer 1 or qualified service person 1 is allowed to relocate the air conditioner It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire electric shocks injury water...

Page 10: ...result Before starting to install the air conditioner read carefully through the Installation Manual and follow its instructions to install the air conditioner Be sure to use the company specified products for the separately purchased parts Use of non specified products may result in fire electric shock water leakage or other failure Have the installation performed by a qualified installer Do not ...

Page 11: ...ited Kingdom Hereby declares that the machinery described below Generic Denomination Air Conditioner Model type Indoor unit MML AP0074NH E MML AP0094NH E MML AP0124NH E MML AP0154NH E MML AP0184NH E MML AP0074NH TR MML AP0094NH TR MML AP0124NH TR MML AP0154NH TR MML AP0184NH TR Commercial name Super Modular Multi System Air Conditioner Super Heat Recovery Multi System Air Conditioner Mini Super Mo...

Page 12: ...hers do not mix in because pipes are affected by impurities such as water oxide scales oil etc Use the clean pipes Be sure to brazing with flowing nitrogen gas Never use gas other than nitrogen gas 4 For the earth protection use a vacuum pump for air purge 5 R410A refrigerant is azeotropic mixture type refrigerant Therefore use liquid type to charge the refrigerant If using gas for charging compos...

Page 13: ...ich serve also for R22 are necessary as the general tools 1 Vacuum pump Use vacuum pump by attaching vacuum pump adapter 2 Torque wrench 8 Spanner or Monkey wrench 3 Pipe cutter 9 Hole core drill 4 Reamer 10 Hexagon wrench Opposite side 4mm 5 Pipe bender 11 Tape measure 6 Level vial 12 Metal saw 7 Screwdriver Also prepare the following equipments for other installation method and run check 1 Clamp...

Page 14: ...５Ｈｚ Φ Φ Φ 2 SPECIFICATIONS 2 1 Indoor Unit 13 ...

Page 15: ...６Ｈｚ Φ Φ Φ 14 ...

Page 16: ...tlet Mounting plate Connecting pipe Gas side Dia 80mm Connecting pipe Liquid side Knock out system Knock out system Air inlet grille Back body 100 70 60 100 Dia 80mm Dia 80mm Dia 80mm Dia 80mm Dia 80mm 15 90 90 15 Mounting screw Mounting screw Mounting screw Air inlet 56 24 204 82 26 163 Front View Back side View AP0154 to AP0184 type MML 300 or more 300 or more 300 or more Space required for B C ...

Page 17: ...N YEL GREEN YELLOW 1 Broken lines indicate the wiring site Long dashed short dashed line indicate the accessories 2 indicates the terminal block indicates the connection terminal indicates the connector on the control P C board 3 indicates the protection ground 4 indicates the control P C board FLOW SELECTOR UNIT Sold separately 1 50Hz 220 240V 60Hz 220V Stepping motor Vertical air flow louver HEA...

Page 18: ...6 8mm Ø6 8mm EFM MD12TCTH 1 Specications Output Rated 41W 340V DC Output Rated 1W 16 poles DC 10kΩ at 25 C 10kΩ at 25 C 10kΩ at 25 C 10kΩ at 25 C 12V DC 3 Damper motor MP24Z3T Output Rated 1W 16 poles DC Change the direction of the air to be discharged according to cool heat mode Air inlet grille Earth screw Earth screws ore provided in the electric parts box Air filter Removes dirt or dust Provid...

Page 19: ...y Time of the timer with H mark is displayed When a trouble occurs the check code is displayed 5 Timer SET IN setup display When pushing the Timer SET IN button the display of the timer is selected in order of OFF OFF repeat OFF timer ON No display 6 Filter display If FILTER is displayed clean the air filter 7 TEST run display Displayed during a test run 8 Louver position display 4 way Air Dischar...

Page 20: ...er locked unit in the group including 1 indoor unit by 1 outdoor unit 19 Unit Number display Unit number of the indoor unit selected with the unit select button or abnormal indication of the indoor outdoor unit 20 Central control display Displayed when the air conditioner is used under the central control in combination with a central control remote controller In case the remote controller is disa...

Page 21: ...s off when stopped Also it flashes when operating the protection device or abnormal time 9 ON OFF button When the button is pushed the operation starts and it stops by pushing the button again When the operation has stopped the operation lamp and all the displays disappear 10 MODE button Operation mode select button Selects desired operation mode 11 UNIT LOUVER button Unit Louver select button Sel...

Page 22: ...r switch at least 12 hours before starting operation Start 1 Push ON OFF button The operation lamp goes on and the operation starts 2 Select an operation mode with the MODE MODE button One push of the button and the display changes in the order shown as follows DRY mode function is not provided to Concealed Duct High Static Pressure Type 3 Select air volume with FAN button One push of the button a...

Page 23: ...ation Super Heat RecoveryType Only When you set the air conditioner in mode or switch over from AUTO operation because of some settings change it will automatically select either cooling heating or fan only operation depending on the indoor temperature 5 5 Adjustment of Wind Direction For best cooling and heating performance adjust the louvers adjustment of up down wind direction appropriately CAU...

Page 24: ...ush SWING FIX set the louver adjustment plate of up down wind direction direction to the lowest position and then push SWING FIX again SWING is displayed and the up down wind direction is automatically selected Display during swinging In this case push SWING FIX again two seconds later In COOL DRY operation the louver does not stop as it directs downward If stopping the louver as it directs downwa...

Page 25: ...luding when the ON timer is set Do not operate the air conditioner for long hours with the airflow direction set downward during the cooling or dry operation Otherwise condensation may occur on the surface of the vertical airflow louver and cause dew dripping Do not move the vertical airflow louver manually Always use the FIX button If you move the louver manually it may malfunction during operati...

Page 26: ...izontal airflow Preparation Take hold of the lever on the horizontal airflow louver and move them to adjust the airflow direction as required You can adjust the airflow at the left and right locations of the louver 25 ...

Page 27: ...5 and 23 5 hours 1 or number of days and time 24 hours or more 2 as shown below For every push of button the set time decreases in the unit of 0 5 hr 30 minutes 0 5 to 23 5 hours or 1 hr 24 to 168 hours Example of remote controller display In the case of 23 5 hours 1 In the case of 34 hours 2 shows 1 day 24 hours shows 10 hours Total 34 hours 3 Push SET button SETTING display disappears and timer ...

Page 28: ...ce where a great deal of machine oil is used Do not install the air conditioner in a place where it is usually exposed to strong wind such as in seaside area Do not install the air conditioner in a place where sulfureous gas generated such as in a spa Do not install the air conditioner in a vessel or mobile crane Do not install the air conditioner in an acidic or alkaline atmosphere in a hot sprin...

Page 29: ... the indoor unit if it is very dirty Never use a damp cloth on the remote controller Do not use a chemically treated duster for wiping or leave such materials on the unit for long It may damage or fade the surface of the unit Do not use benzine thinner polishing powder or similar solvents for cleaning These may cause the plastic surface to crack or deform Periodic check Long period use of the air ...

Page 30: ...st dirt clogging scratches Sound Dust dirt breakage Vibration balance Dust dirt appearance Dust dirt scratches Dust dirt clogging drain contamination Dust dirt scratches Maintenance Wash the heat exchanger when it is clogged Take appropriate measures when abnormal sound is generated Wash the filter with water when it is contaminated Replace it when it is damaged Replace the fan when vibration or b...

Page 31: ... cleaner to remove the dust from the filter or wash them with water If you wash the air filter dry them in the shade 4 Insert the lower ribs of air filter into the slots then set it into the holding slot reverse the procedure number 2 2 Wash it with water using a soft sponge or towel Do not use metallic scrubbing brush or the other hard brushed Use of such hard objects will cause scratches on the ...

Page 32: ...rong wind blows continuously against the air outlet of the outdoor unit Heating operation When dust or dirt is excessively adhered to air filter of the indoor unit When the air outlet of the indoor unit is blocked Cooling heating operation of Modular Multi system air conditioner In Modular Multi system air conditioner each indoor unit can be individually controlled However cooling operation and he...

Page 33: ...rant or draining sound of dehumidifier This is sound generated when heat exchanger etc expand and contract slightly due to change of temperature Various smell such as one of wall carpet clothes cigarette or cosmetics adhere to the air conditioner When cooling operation cannot be performed because another indoor unit performs heating operation When the manager of the air conditioner has fixed the o...

Page 34: ...ditioner 3 More details of the service code are explained in Service Manual Check these items If any of these problems still remains stop the operation turn off the leakage breaker and then notifies the dealer of the serial number and details of the error Never repair any part by yourself as it is dangerous When and a combination of or and a number are displayed on the remote controller also infor...

Page 35: ...ers refrigerant oil in heating operation Connector CN104 2P White 1 Detects indoor suction temperature Connector CN100 3P Brown 1 Controls PMV super heat in cooling operation Connector CN101 2P Blue 1 Controls PMV under cool in heating operation Connector CN102 2P Yellow 1 Controls PMV super heat in cooling operation Air heat exchanger at indoor side Fan M Fan motor Sensor TA Sensor TC1 Gas side L...

Page 36: ...g operation Dry operation Heating operation Ta and Ts automatically select COOL HEAT operation mode for operation Except SHRM the automatic mode cannot be selected While a wireless remote controller is used the mode is notified by Pi Pi two times receiving sound To clear the alternate flashing change the mode on the wireless remote controller 1 Adjustment range Remote controller setup temperature ...

Page 37: ...cribed below based upon temp detected by TC2 and TCJ sensors When M zone is detected for 45 minutes the thermostat is forcedly off In N zone the timer count is interrupted and held When shifting to M zone again the timer count restarts and continues If L zone is detected the timer is cleared and the operation returns to normal operation Reset conditions 1 TC1 12 C and TC2 12 C and TCJ 12 C 2 20 mi...

Page 38: ... operation and protective control 1 When the unit stopped from HEAT operation the indoor fan operates with L for approx 30 seconds 1 ON OFF operation is available by input of HA signal from the remote site when connected to remote controller or the remote ON OFF interface 2 HA control outputs ON OFF status to HA terminal 3 The I O specifications of HA conform to JEMA standard 1 The filter sign is ...

Page 39: ...he contents that can be operated by the remote controller at the indoor unit side is possible according to setting at the central controller side 2 Setting contents In case of TCC LINK central control Operation from TCC LINK central control Individual Central 1 Central 2 Central 3 Central 4 Operation on RBC AMT32E ON OFF Operation Timer Temp Air speed Air direction setting selection setting settin...

Page 40: ...and heating operation 4 When the unit stopped or the warning was output the louver is automatically set to full closed position 5 When PRE HEAT is displayed Heating operation started or defrost operation is performed heating thermo is off the louver is automatically set to closed When you push the Hi POWER button during cooling heating or A operation the air conditioner will start the following op...

Page 41: ...ere capacity is kept to the minimum overheating is prevented by lowering the temperature setting by 1 C after 1 hour and by 2 C after 2 hours of operation The room temperature is thus regulated between the set temperature and the operation suppression zone When the OFF timer is simultaneously set 1 3 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected f...

Page 42: ...display will indicate AUTO and low speed will be used Remarks display When the OFF timer is set 1 3 5 and 9 hours appear by turns every pushing SLEEP button and one of them can be selected for OFF timer SLEEP operation Wireless remote controller specific operation 21 22 Save operation 1 The function Save operation is not provided to the Super Modular Multi series models If pushing SAVE button on t...

Page 43: ...l control remote controller to group header unit 2 Connection of weekly timer to sub remote controller is unavailable Main Sub master remote controller Up to 2 sets Weekly timer Key switch Function setup Key switch Power circuit EEPROM TA sensor TC sensor TCJ sensor HA Power supply 1Ø 220 240V 50Hz 1Ø 220V 60Hz Secondary battery Remote controller communication circuit Central control remote contro...

Page 44: ... group header unit EEPROM TA sensor TC sensor TCJ sensor HA Central control remote controller Option 1 Start Alarm Ready Thermostat ON COOL HEAT FAN Remote controller A B setup BUS Communication circuit Fan motor control circuit AC synchronous signal input circuit Sensor part Power circuit LED Remote controller communication circuit CPU Central control communication circuit Driver L N L N Power su...

Page 45: ...CN32 DC 12V Louver CN33 DC 12V DC fan input output CN210 Terminator resistor provided not provided Remote controller A B switch SW01 Display output Wireless sensor CN213 DC 5V Option power supply CN309 AC 200V Central control CN40 DC 5V TCJ sensor CN102 DC 5V Microcomputer operation LED D02 TC2 sensor CN101 DC 5V EEPROM IC10 Inter unit wire CN67 AC 200V n 8 2 Indoor P C Board MCC 1510 44 TC1 senso...

Page 46: ...ingle operation by FAN button on remote controller is executed from remote controller DN 31 HA Start Stop input J01 Provided Not provided Pulse At shipment from factory Static input switch Operation stop of handy remote controller is permitted prohibited by input ON during operation Answer back of HA ON during output of alarm At shipment from factory the error code L30 generates and optional error...

Page 47: ...us 8 3 Functions at test run n Cooling Heating test run check The test run for cooling heating can be performed from either indoor remote controller or outdoor interface P C board 1 Start Finish operation of test run Test run from indoor remote controller Wired remote controller Refer to the below item of Test run of the wired remote controller Wireless remote controller Refer to the next page ite...

Page 48: ...more Pi sound is heard and the operation changes to a forced cooling operation After approx 3 minutes a cooling operation starts forcedly Check cool air starts blowing If the operation does not start check wiring again 2 To stop a test operation push button once again Approx 1 second The louver closes and the operation stops In case of wireless remote controller Forced test operation is performed ...

Page 49: ...e fan of the selected indoor unit is turned on 2 Every pushing UNIT LOUVER button the indoor unit numbers in the group control are successively displayed In this time the fan of the selected indoor unit only is turned on 3 Specify the item code DN using the setup temperature and buttons 4 Select the setup data using the timer time and buttons When selecting the DN code to 33 change the temperature...

Page 50: ... 1 C 0002 2 C to 0003 3 C 0010 10 C Up to 6 recommended 0000 Provided 0001 Not provided Automatic selection from connected outdoor unit 0000 Heat pump 0001 Cooling only No display of AUTO HEAT 0018 Console 0000 Unfixed 0001 to 0034 0001 No 1 unit to 0030 No 30 unit 0001 No 1 unit to 0064 No 64 unit 0000 Individual 0001 Header unit of group 0002 Follower unit of group 0000 0 deg to 0010 10 deg For ...

Page 51: ... 3 Error signal Output during alarm Serial communication error or indoor outdoor protective device operation 2 Wiring diagram using remote control interface TCB IFCB 4E2 Input IFCB 4E2 No voltage ON OFF serial signal Output No voltage contact for operation error display Contact capacity Below Max AC240V 0 5A Setup data 0018 Type Console Abbreviated Model name MML AP XXX 4NH Setup data 0001 0003 00...

Page 52: ...ure to set up the wired remote controller to the header unit Same in group control In a group control if the wired remote controller is set up to the header unit both header and follower units are simultaneously operable 1 Push concurrently SET CL TEST buttons for 4 seconds or more The unit No displayed firstly indicates the header indoor unit address in the group control In this time the fan of t...

Page 53: ...e indoor unit can be protected When inserting a card start stop operation from the remote controller is allowed When taking out a card the system stops if the indoor unit is operating and start stop operation from the remote controller is forbidden 1 Control items 1 Outside contact ON The start stop operation from the remote controller is allowed Status that card is inserted in the card switch box...

Page 54: ...up control Outdoor Outdoor Indoor Indoor Indoor Indoor Indoor Header unit Follower unit Line address 1 Indoor unit address 1 Group address 1 1 2 2 1 3 2 2 1 2 2 2 2 Operation procedure 1 2 3 4 5 6 1 3 6 9 END 11 2 5 8 4 7 10 SET TIME TIMER SET TEST FILTER RESET TEMP CL FAN SAVE SWING FIX VENT MODE ON OFF UNIT LOUVER 7 8 9 10 11 END Note 1 When setting the line address from the remote controller do...

Page 55: ...ller Group control unit other unit numbers are also displayed every pushing UNIT LOUVER button button at left side 2 To know the position of indoor unit by address To confirm the unit No in the group control Follow to the procedure during operation in this procedure the indoor units in group control stop Procedure The indoor unit numbers in the group control are successively displayed and fan louv...

Page 56: ...l is displayed one after the other In this time fan and louver of the selected indoor unit only operate ò 3 Using the set temperature TEMP buttons specify the CODE No DN ò 4 Using the timer time TIME buttons select the set data ò 5 Push SET button OK if indication lights To change the selected indoor unit proceed to Procedure 2 To change item to be set up proceed to Procedure 3 ò 6 Pushing TEST bu...

Page 57: ...ING FIX button ò 3 Determine the selected line address using SET button The address of the indoor unit connected to the refrigerant piping of the selected outdoor unit is dis played and the fan and the louver are on ò 4 Every pushing UNIT LOUVER button button at left side the indoor unit No in the identical piping is displayed one after the other Only fan and louver of the selected indoor unit sta...

Page 58: ...ayed ò 4 TIME button push up down the indoor address of the SET DATA The set data is changed to a new address ò 5 Push SET button to determine the set data ò 6 Every pushing UNIT LOUVER button button at left side the indoor unit No in the identical piping is displayed one after the other Only fan and louver of the selected indoor unit start operation Repeat the Procedures 4 to 6 to change all the ...

Page 59: ...o service monitor mode 2 Push TEMP button to set the CODE No to FF 3 The display of A part in the following figure is counted as with 5 seconds interval When appear the error was cleared However counting from is repeated on the display screen 4 When pushing TEST button the status becomes normal How to clear error of indoor unit The error of indoor unit is cleared by ON OFF button of the remote con...

Page 60: ...pressor 1 is ON 10 Only compressor 2 is ON 11 Both compressor 1 and 2 are ON Note 3 For the CODE No an example of header unit is described Note 4 Upper girder of CODE No indicates the outdoor unit No 1 Header unit A 2 Follower unit B 3 Follower unit C 4 Follower unit D Indoor unit data System data Individual outdoor unit data Note 3 4 CODE No 00 01 02 03 04 05 08 F2 F3 0A 0B 0C 0D Data name Room t...

Page 61: ... Indoor fan does not stop Start stop operation on remote controller is unavailable Check items Is not delayed for 3 minutes 3 minutes after compressor OFF Is not thermostat OFF Is not the fan operating or timer Is not the system initially communicating Heating operation cannot be performed under condition of outside temperature 21 C or higher Cooling operation cannot be performed under condition o...

Page 62: ...door and remote controller Regular communication error between indoor and outdoor Duplicated indoor address Communication error between indoor MCU Regular communication error between header and follower in indoor unit Indoor heat exchanger temp sensor TCJ error Indoor heat exchanger temp sensor TC2 error Indoor heat exchanger temp sensor TC1 error Room tem Sensor TA error Discharge air temp sensor...

Page 63: ... unit In 2 remote controller control both remote controllers were set to header Indoor header stops with alarm and follower unit continues operation Check code display TCC LINK central C05 C06 C12 P30 Outdoor 7 segment Auxiliary code Sensor lamp display Block display Operation Timer Ready Flash Is not displayed In shared use of remote controller According to unit with alarm Abovementioned Main def...

Page 64: ...oor pressure sensor Pd Ps miswiring Outdoor discharge temp sensor TD3 error Low pressure Ps sensor error High pressure Pd sensor error Outdoor EEPROM error Description No communication from indoor unit Decrease of connected indoor units Signal cannot be sent to indoor unit There is no communication from outdoor unit There are multiple indoor units having the same address Detected also at indoor un...

Page 65: ...oor units over IPDU quantity error Outside error input in indoor Interlock Outdoor unit discharge TD1 temp error Open phase shortage Power failure error Inverter DC voltage Vdc error Description Miswiring or mismounting of outdoor discharge temp sensor TD1 or coming out of TD1 sensor was detected Miswiring or mismounting of outdoor discharge temp sensor TD2 or coming out of TD2 sensor was detected...

Page 66: ... unit error Main code Description High temp error was detected in outdoor IGBT built in temp sensor TH There is heat unit which was been detected water shortage in 1 system Heat unit detected There is abnormally stopped indoor unit which was been detected water overflow in 1 system Indoor unit detected Liquid back operation was judged from refrigerant cycle status Outdoor suction temp sensor TS1 c...

Page 67: ...ssor break down Compressor error Lock Current detection circuit error High pressure SW system operation Heat sink overheat error IPDU for outdoor fan error G Tr IGBT short circuit protection error Compressor position detection circuit system error Description Open Short of outdoor unit IGBT built in temp sensor TH was detected Inverter current Idc detection circuit detected over current Compressor...

Page 68: ...ck code Indoor unit No in which an error occurred 3 2 1 SET TIME TIMER SET TEST FILTER L L RESET TEMP CL FAN SAVE A A SWING FIX VENT MODE ON OFF UNIT LOUVER T How to read the check monitor display 7 segment display 8 9 A b C d E F H J L P 7 6 5 4 3 2 1 0 How to read Procedure 1 2 3 Description When pushing SET and TEST buttons simultaneously for 4 seconds or more the below display appears If Servi...

Page 69: ...r stop 1 Push and SET buttons in succession for 4 seconds or more 2 SERVICE CHECK goes on and CODE No 01 goes on 3 When selecting flash the group number if there is the alarm history the UNIT number and the latest alarm history are displayed alternately In this time the temperature cannot be set up 4 To confirm the alarm history other than the latest one push temp set to select CODE No 01 to 04 5 ...

Page 70: ...nd outdoor unit Communication interruption between indoor and outdoor units Communication receiving error between indoor and outdoor units decrease of No of connected indoor units Communication sending error between indoor and outdoor units No indoor unit during setting of automatic address No of connected indoor units capacity over Error of No of header unit Disagreement of refrigerant pipe commu...

Page 71: ...p sensor TD3 error Low pressure sensor Ps error Pressure sensor error in outdoor unit High pressure sensor Pd error Indoor unit EEPROM error Compressor break down Compressor lock Outdoor unit compressor system error Current detection circuit error Compressor 1 case thermo operation Miswiring or mismounting of outdoor discharge temp sensor TD1 or coming off of TD1 sensor Low pressure Ps drop error ...

Page 72: ...mer Ready Simultaneous flash Operation Timer Ready Alternate flash Check code Cause of trouble occurrence During test run COOL HEAT disagreement Automatic cooling heating setup to automatic cooling heating unavailable model heating setup to cooling only model ...

Page 73: ...period from the indoor unit which has been used to send signals Transmission from outdoor to indoor cannot continue for 30 seconds Multiple indoor unit address setup are duplicated In 2 remote controller control including wireless both are setup as master Header indoor unit stops and other indoor unit is operating Communication was not succeeded after power was supplied or during communication Whe...

Page 74: ...cated The signal was not returned for constant from the outdoor unit which was receiving signal Outdoor header unit received error code from outdoor follower unit Check item position Check the communication line connection between indoor and outdoor Check the electric power line error in indoor Check the noise of surrounding devices Power failure Check indoor P C board error Check the connection c...

Page 75: ...e value of sensor is infinite or zero Open Short Check item position Check connection of communication connector and disconnection between IPDU and I F P C board Check outdoor P C board I F Comp IPDU Fan IPDU error Check external noise Check connection cabling of TCJ sensor connector Check characteristics of TCJ sensor resistance value Check indoor P C board error Check connection cabling of TC2 s...

Page 76: ...etected over current and stopped Over current was detected several seconds after header compressor had started While header compressor stopped current flowed more than the specified current and was detected Check item position Check installation of TE1 sensor and TL sensor Check characteristics of TE1 and TL sensor resistance value Check outdoor P C board I F error Check connection of high pressur...

Page 77: ...Check mounting of TD1 sensor Check connection and wiring of TD1sensor connector Check characteristics of TD1 sensor resistance value Check outdoor unit P C board I F error Check full opening of service valve Discharge gas suction gas and liquid side Check outdoor PMV clogging PMV1 2 Check SV2 circuit and SV4 circuit error Check low pressure Ps sensor error Check indoor air filter clogging Check va...

Page 78: ... sensor connector Check characteristics of TD2 sensor resistance value Check outdoor unit P C board I F error Check TK1 sensor coming off Check characteristics of TK1 sensor resistance value Check TK1 TK2 TK3 TK4 and TK5 misconnection Check operation error of SV3E SV3F valve Check capillary clogging of oil equation circuit and operation error of stop valve Check refrigerant stagnation in compresso...

Page 79: ...was unset On the I F P C board for service jumper line was not cut according to the model Duplicated central control addresses There were more than four outdoor units No of IPDU units detected when power was turned on were less Outside error input terminal Detected signal to CN80 for more 1 minute P C board I F parts error Check item position Check display of indoor unit with priority Check displa...

Page 80: ... service valves Gas side Liquid side Check clogging of outdoor PMV PMV1 2 4 Check characteristics of TD1 sensor resistance value Check refrigerant shortage Check 4 way valve error Check leakage of SV4 circuit Check SV4 circuit Miswiring and misinstallation of SV41 SV42 and SV43 Check connection of high pressure SW connector Check Pd pressure sensor error Check full opening of outdoor service valve...

Page 81: ...pillary clogging of oil return circuit from oil separator Check leakage of stop valve in discharge assembly part Check refrigerant shortage Check full open of outdoor service valves gas side liquid side Check outdoor PMV clogging PMV1 2 Check characteristics of TS1 sensor resistance value Check 4 way valve error Check leakage of SV4 circuit Check refrigerant shortage Check outdoor PMV clogging PMV...

Page 82: ...ection was not normally performed Restart after 6 seconds Auxiliary code 04 External cause such as blast When difference between target rpm and real rpm is 25 or more Restart after 6 seconds Auxiliary code 0D Fan IPDU position detection circuit Position detection was not normally performed Windless status Auxiliary code 0C External cause such as blast Position detection was not normally performed ...

Page 83: ...inued Operation continued Error detection condition Signal is not transmit from central control device Signal is not received from central control device Error was input in general purpose equipment control interface An error occurred in follower unit of the group control P30 is displayed only on the central remote controller Central control addresses were duplicated Check item position Check cent...

Page 84: ...asten terminal lug If it is loosened caulk it with pinchers etc and then connect lead to the terminal 10 4 3 How to Check Resistance of Compressor Winding 1 Turn off the power supply 2 Remove the compressor lead cables from the compressors In each compressor check the winding resistance between phases and resistance of the outdoor cabinet using a tester Is not it earthed Normal if 10MΩ or more are...

Page 85: ... 20 10 20 30 40 50 Characteristic 1 Temperature C Indoor TA sensor Resistance kΩ 50 0 100 150 200 5 0 10 15 20 20 30 10 0 10 20 30 40 50 60 70 80 90 100 Characteristic 2 Temperature C Indoor TC1 TC2 TCJ sensors Resistance kΩ 10 C or lower Resistance kΩ 10 C or higher 84 ...

Page 86: ... matters relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or alternatively he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation r...

Page 87: ...el of the indoor unit or service panel of the outdoor unit and do the work required Inside the air conditioner are high voltage areas and rotating parts Due to the danger of electric shocks or of your fingers or physical objects becoming trapped in the rotating parts do not remove the front panel of the indoor unit or service panel of the outdoor unit When work involving the removal of these parts...

Page 88: ... the unit from lightning and power source surge Do not put a vessel with water such as a vase on the unit because water may possibly sink into the unit and will bring about electric shock because of deterioration in electric insulation Do not wash the unit with water It may cause an electric shock Do not use alcohol benzene thinner glass cleaner polishing powder etc for cleaning the unit because t...

Page 89: ...er due to disagreement in operation mode Change the operation mode with the MODE button on the wireless remote controller This disagreement indication cannot be deleted by the wired remote controller When local prohibition is set by the central control from other equipment no signal is received even if the remote controller button is pressed However a signal of START STOP button is accepted An ala...

Page 90: ...utton again will restore normal operation PRESET QUIET SWING TIMER ON FILTER CHK CLOCK OFF CLR SLEEP SET FIX Hi POWER COMFORT SLEEP MODE TEMP FAN 1 4 13 2 16 6 7 14 9 5 3 15 12 11 10 8 1112750101_ 01_EN indd 9 12 15 10 11 25 AM Q Names and functions of indications on wireless remote controller Display All indications except for clock time indication are indicated by pressing the START STOP button ...

Page 91: ...ceiving sound will be heard from the indoor unit and the display on the wireless remote controller will also be changed as same as Hi POWER operation However the set temperature and the fan speed will not be automatically adjusted Only off timer function is activated 3 Units other than the Header unit cannot be operated with remote controller and the TEMPORARY operation When operating air conditio...

Page 92: ...OTE When the indoor unit is operated together with a cooling only outdoor model outdoor unit appears on the remote controller but the heating operation is disabled In the cooling operation airflow is blown out only from the upper air outlet grille under some operating conditions PRESET MODE TEMP FAN 3 4 1 2 4 Fan speed button FAN Select one of LOW LOW MED MED HIGH The OPERATION lamp green on the d...

Page 93: ...SET button Either ON or OFF timer function which is closer to the current time is activated first If the same time is set for both ON and OFF timers no timer operation is performed Also the air conditioner may stop operating 1112750101_ 01_EN indd 15 12 15 10 11 25 AM Every day combined timer setting both ON and OFF timer simultaneously and activate every day This feature is useful when you want t...

Page 94: ... AUTO or A mode is selected To set the airflow direction you desire Perform this function when the air conditioner is in operation 1 FIX button Keep pressing or pressing briefly the FIX button on the remote controller to move the louver in the desired direction In subsequent operations the vertical airflow is automatically set in the direction to which you adjusted the louver using the FIX button ...

Page 95: ...out the function perform cooling operation set temperature 24 C fan HIGH CAUTION Continuous pressing of the button for 10 seconds and above will start the forced cooling operation This will impose burden on the air conditioner Do not perform this for the purposes other than test run In this time all indicators of indoor unit go on 11 MAINTENANCE WARNING Before you clean the air conditioner be sure...

Page 96: ... Close the air inlet grille 1112750101_ 01_EN indd 21 12 15 10 11 25 AM 12 SPECIFICATIONS Model Sound power level dBA Weight kg Cooling Heating MML AP0074NH E 17 MML AP0074NH TR 17 MML AP0094NH E 17 MML AP0094NH TR 17 MML AP0124NH E 17 MML AP0124NH TR 17 MML AP0154NH E 17 MML AP0154NH TR 17 MML AP0184NH E 17 MML AP0184NH TR 17 Under 70 dBA Declaration of Conformity Manufacturer TOSHIBA CARRIER THA...

Page 97: ...s relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or alternatively he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation relocati...

Page 98: ... the installation maintenance repair or removal work is being carried out There is a danger of electric shocks if the circuit breaker is set to ON by mistake Wear protective gloves and safety work clothing during installation servicing and removal Do not touch the aluminum fin of the unit You may injure yourself if you do so If the fin must be touched for some reason first put on protective gloves...

Page 99: ...k has finished be sure to use an insulation tester set 500V Megger to check the resistance is 1 MΩ or more between the charge section and the non charge metal section Earth section If the resistance value is low a disaster such as a leak or electric shock is caused at user s side Upon completion of the installation work check for refrigerant leaks and check the insulation resistance and water drai...

Page 100: ...ing plants are kept This may degrade the quality of preserved materials Place where any of high frequency appliances including inverter devices private power generators medical equipment and communication equipment and inverter type fluorescent light is installed A malfunction of the air conditioner abnormal control or problems due to noise to such appliances equipment may occur When the wireless ...

Page 101: ... Carry the package by two or more persons and do not bundle it with plastic band at positions other than specified Be careful to the following items when installing the unit Considering air discharge direction select an installation place where discharge air can circulate evenly in a room Avoid to install the unit at place with NO GOOD mark in the right figure OK NO GOOD Not cooled well Bad instal...

Page 102: ...water dew Heat insulation block can cut to an appropriate size and use 99 42 122 8 5 104 47 146 5 34 272 560 670 580 Mounting directly on the ﬂoor 1 Fix the leg of indoor unit on the floor with 2 mounting screws 2 Fix the upper part of indoor unit on the wall with 4 mounting screws Installation on the wall 1 Fix the installation plate on the wall with 4 mounting screws 2 Hook the indoor unit on th...

Page 103: ...ed tightening torque Piping with outdoor unit Shape of valve differs according to the outdoor unit For details of installation refer to the Installation Manual of the outdoor unit REQUIREMENT Use a leak detector manufactured exclusively HFC refrigerant R410A R134a etc Open fully valves of the outdoor unit Heat insulation Heat insulation for the pipes should be done separately for the liquid side a...

Page 104: ...ote controller inter unit wiring Wire size 0 5 mm2 to 2 0 mm2 Total wire length of wired remote controller wiring and remote controller inter unit wiring L L1 L2 Ln In case of wired type only Up to 500 m In case of wireless type included Up to 400 m Total wire length of wired remote controller inter unit wiring L1 L2 Ln Up to 200 m CAUTION The remote controller wire Communication line and AC220 24...

Page 105: ...r supply wire R L S N Cord clamp Screw Screw Terminal cover Terminal cover UP Screw Power supply terminal block Terminal block for control wired remote controller wiring Cord clamp Power supply wire Earth screw 430 mm Earth wire for power supply wire Power supply terminal block U1 A B U2 230 230 10 10 Shield wire Stripping length of the control wire Control wire Remote control wire Screw Display b...

Page 106: ...forming operations on the outdoor interface circuit board While the automatic addresses are being set up no remote controller operations can be performed Setup takes up to 10 minutes usually about 5 minutes When the power is turned on after automatic address setup It takes up to 10 minutes usually about 3 minutes for the outdoor unit to start operating after the power has been turned on Before the...

Page 107: ... indoor units by connecting the remote controller inter unit cables from the remote controller terminal blocks A B of the indoor unit connected with a remote controller to the remote controller terminal blocks A B of the other indoor unit Non polarity For address setup refer to the Installation Manual attached to the outdoor unit NOTE Net work adapter Model TCB PCNT20E can not connect to this air ...

Page 108: ...oor UNIT No in which an error occurred 11 11 TROUBLE SHOOTING TROUBLE SHOOTING A wired remote controller is necessary for this function This function cannot be operate with a wireless remote controller Conﬁrmation and check When a trouble occurred in the air conditioner the check code and the indoor UNIT No appear on the display part of the remote controller The check code is only displayed during...

Page 109: ...units Capacity over No of connected indoor units I F E18 Communication error between indoor units Indoor E19 E19 00 Header is nothing 02 Two or more header units Outdoor header units quantity error I F E20 E20 01 Outdoor of other line connected 02 Indoor of other line connected Other line connected during automatic address I F E22 E22 Reduction in number of heat storage units I F E23 E23 Sending e...

Page 110: ...door P13 P13 ALT Outdoor liquid back detection error I F P15 P15 01 TS condition 02 TD condition ALT Gas leak detection I F P17 P17 ALT Discharge temp TD2 error I F P18 P18 ALT Discharge temp TD3 error I F P19 P19 Detected outdoor unit number ALT 4 way valve inverse error I F P20 P20 ALT High pressure protective operation I F P22 P22 0 IGBT circuit 1 Position detective circuit error 3 Motor lock e...

Page 111: ... Data of four units can be entered in this check sheet Copy this sheet according to the No of the indoor units If the installed system is a group control system use this sheet by entering each line system into each installation manual attached to the other indoor units Indoor unit Indoor unit Indoor unit Indoor unit Room name Room name Room name Room name Model Model Model Model Check indoor unit ...

Page 112: ... H2 in Page 140 141 ò Write the read data to EEPROM see H3 in Page 142 ò Power reset If in group operation reset the power for all indoor units which are connected to the remote controller CASE 2 Before replacement the setup data can not be read out by the wired remote controller Replace service P C board power ON see H2 in Page 140 141 ò Write the data such as option input selection setup to EEPR...

Page 113: ...g of DIP switch on the former P C board should be reflected on the service P C board Refer to the following table about DIP switch setting and drawing of P C board parts layout 2 It is necessary to set Indoor unit to be exchanged Remote controller 1 1 Based upon the system configuration turn on power of the indoor unit with one of the following items 1 Single Individual operation Turn on power of ...

Page 114: ...or resistor for central control Remote controller A B selection Custom Multi model selection No use MML AP 4NH series 1 1 ON OFF At shipment OFF Without terminator OFF A selection ON Multi model OFF A B A B A B Indoor unit P C board Remote controller Group wire Group wire Case 1 Remove the group wire of the terminal blocks A and B of the changed indoor unit and then install the remote controller o...

Page 115: ...e buttons set to the CODE No DN 2 Setup of lighting time of filter sign 6 The contents of the displayed setup data in this time should be agreed with the contents in the previous memorandum in H1 1 If data disagree change the displayed setup data to that in the previous memorandum by the timer time buttons and then push SET button OK when the display goes on 2 There is nothing to do when data agre...

Page 116: ...ntrol points Automatic restart from power cut Option input selection CN80 Thermo output selection T10 S Input selection T10 Q Sensor selection Timer set Wired remote controller Louver selection of cooling Memo Be sure to set as 0018 At shipment 0001 150 hour 0000 Standard 0099 Unfixed 0000 No shift 0000 Standard 0001 No auto mode Automatic selection by cooling heating connected outdoor unit 0000 H...

Page 117: ...he surrounding area If a gas stove or other appliance is being used extinguish the flames before proceeding If the flames are not extinguished they may ignite any oil mixed with the refrigerant gas 2 Do not use welding equipment in an airtight room Carbon monoxide poisoning may result if the room is not properly ventilated 3 Do not bring welding equipment near flammable objects Flames from the equ...

Page 118: ...g equipment in an airtight room Carbon monoxide poisoning may result if the room is not properly ventilated 3 Do not bring welding equipment near flammable objects Flames from the equipment may cause the flammable objects to catch fire If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir cuitry wear rubber gloves to avoid contact with the live parts Electr...

Page 119: ... 3 Remove screw for E box cover 4 Remove damper motor connector flow selector connector and TA sensor from pipe cover F 5 Take off damper motor connector 6 Remove screw for pipe cover F 3 pcs 7 Remove screw for drain guide UP 118 4 TA sensor 4 Flow selector connector 4 Damper Pipe cover F 6 Screw for pipe cover F 3pcs 7 Screw for drain guide UP Drain guide UP motor connector 1 Screw for Terminal c...

Page 120: ...ical parts Box assembly E box 8 Remove screw for pipe cover U 3 pcs 9 Remove screw for pipe cover D 10 Remove screw for display base 11 Remove screw for earth lead 2 pcs 12 Pull off the TC1 TC2 TCJ sensor 119 10 Screw for display base 2pcs ...

Page 121: ...motor conector 15 Take off fan motor conector 16 Remove screw for E box 120 18 Lift a E box in the upward for take off from the hook 17 Pull the upper part of the E box How to arrenge the lead Shown in the picture Louver motor lead LED base lead PMV motor lead Earth lead from E parts assy Earth lead from fan motor base ...

Page 122: ... protection tube for lead from Remove protection tube from cord clamp before it pulls out E box Otherwise the breakdown in the disconnection etc might be caused How to remove P C board ASSY cord clamp 2pcs 20 Remove screw to fix sub base to E box 21 Pull out E box from sub base 121 ...

Page 123: ...V motor Cautions at work Using spanners by 14mm 17mm and 19mm remove the PMV motor To avoid deformation of the pipes do not use a monkey wrench 1 Perform work of item Q 2 Perform work of item R 3 Remove the bundling band of PMV motor lead wire 4 Pull off butyl of PMV main unit until the position shown in the right photo 5 Using a spanner remove PMV Caution in reassembling Determine PMV motor lead ...

Page 124: ...or louver base assemble Insert the rib of the louver base into the slot of back body same as the picture p Bell mouth 1 Remove screws for bell mouth 4 pcs q Drain pan and 1 Remove screws for drain pan 2 pcs damper base 2 Remove screws for damper base 2 pcs Screws for louver base 2 pcs Louver base rib Back body slot Screws for bell mouth 4 pcs Screw for drain pan Screws for damper base 2 pcs Screw ...

Page 125: ...motor holder and take off the motor holder 2 Take off the lead cover Attention for motor holder assemble 1 Arrange the earth lead and fan motor lead 2 Adjust the motor axis to the center of the motor holder then fix screws 4 pcs 11 Fan motor A method to take off a fan motor in a condition taking on a heat exchanger 1 Take off pipe holder and remove screws for heat exchanger refer to 2 Remove screw...

Page 126: ...No Part name Procedure Remarks 11 Fan motor 3 Remove the flange nut and turbo fan refer to 4 Remove screws for motor holder and lead cover refer to 125 ...

Page 127: ...Turn the power supply off to stop the operation of air conditioner 2 Remove the front panel Remove the 2 fixing screws 3 Remove the electrical part base Remarks Replace terminal block microcomputer ass y and the P C board ass y Microcomputer 126 ...

Page 128: ...15 HORIZONTAL LOUVER 208 43T60408 MOTOR HOLDER 222 43T63336 DISPLAY BASE 209 43T63331 LEAD COVER 223 43T62341 TERMINAL COVER ASSY 210 43T22319 BELL MOUTH ASSY 224 43T62342 TERMINAL COVER UP 211 43T44466 REFRIGERANT CYCLE ASSY 225 43T08419 DISPLAY FOR MML AP0074 0094 0124NH E 226 43T82316 PLATE MOUNTING 211 43T44467 REFRIGERANT CYCLE ASSY 227 43T66304 REMOCON WRS FOR MML AP0154 0184NH E 228 43T8300...

Page 129: ...20 UPPER LOUVER ASSY 208 43T60408 MOTOR HOLDER 221 43T22315 HORIZONTAL LOUVER 209 43T63331 LEAD COVER 222 43T63336 DISPLAY BASE 210 43T22319 BELL MOUTH ASSY 223 43T62341 TERMINAL COVER ASSY 211 43T44466 REFRIGERANT CYCLE ASSY 224 43T62342 TERMINAL COVER UP FOR MML 0074 0094 0124NH TR 225 43T08419 DISPLAY 211 43T44467 REFRIGERANT CYCLE ASSY 226 43T82316 PLATE MOUNTING FOR MML 0154 0184NH TR 227 43T...

Page 130: ...Location Part Location Part No No No No 401 43T50317 SENSOR HEAT EXCHANGER 405 43T60078 TERMIMAL BLOCK 402 43T50306 TEMPERATURE SENSOR 406 43T60079 TERMIMAL BLOCK 403 43T50308 SENSOR HEAT EXCHANGER 407 43T69899 PC BOARD 404 43T69320 TEMPERATURE SENSOR 408 43T69900 PC BOARD ASSY WRS LED Description Description ...

Page 131: ...30 Location Part Location Part No No No No 401 43T50317 SENSOR HEAT EXCHANGER 405 43T60078 TERMIMAL BLOCK 402 43T50306 TEMPERATURE SENSOR 406 43T60079 TERMIMAL BLOCK 403 43T50308 SENSOR HEAT EXCHANGER 407 43T69899 PC BOARD 404 43T69320 TEMPERATURE SENSOR 408 43T69900 PC BOARD ASSY WRS LED Description Description ...

Page 132: ...TOSHIBA CARRIER THAILAND CO LTD ...

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