Instruction/ maintenance manual of the product MMU-AP0121MH Toshiba
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FILE NO. A06-002 PRINTED IN JAP AN, Apr ., 2006 T oMo SER VICE MANUAL <Compact 4-W a y Air Dischar ge Cassette T ype> MMU-AP0071MH MMU-AP0091MH MMU-AP0121MH MMU-AP0151MH MMU-AP0181MH • This Ser vice Manual describes contents of the Compact 4-W a y Air Discharge Cassette i ndoor unit.
CONTENTS SAFETY CA UTION ............................................................................................ 3 1. CONSTR UCTION VIEWS (EXTERNAL VIEWS) ........................................ 8 2. WIRING DIA GRAM .............................
3 Before tr oubleshooting or repair work, check the earth wire is connected to the ear th terminals of the main unit, otherwise an electric shock is caused when a leak occur s. If the ear th wire is not correctly connected, contact an electr ic engineer for re work.
4 After repair w ork, surely assemble the disassembled parts, and connect and lead the removed cab les as before. P erform the w ork so that the cabinet or panel does not catch the inner cables. If incorrect assembly or incorrect cab le connection was done, a disaster such as a leak or fire is caused at user’ s side.
5 • New Refrigerant (R410A) This air conditioner adopts a ne w HFC type refrigerant (R410A) which does not deplete the ozone la y e r . 1 . Safety Caution Concerned to Ne w Refrigerant The pressure of R410A is high 1.6 times of that of the f or mer refrigerant (R22).
6 4 . T ools (1) Required T ools for R410A Mixing of diff erent types of oil may cause a troub le such as generation of sludge , clogging of capillar y , etc.
7 5 . Rechar g e of Refrigerant When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below . Q Ne v er charge the refrigerant ov er the specified amount. R Do not charge the additional refrigerant.
8 1. CONSTR UCTION VIEWS (EXTERNAL VIEWS) 595 to 660 Ceiling open dimension Space required for installation and servicing 200 525 Hanging bolt pitch 595 to 660 Ceiling open dimension 700 P anel external dimension 142 64 368.5 145.5 93 105 70 575 Unit external dimension 320.
9 BLK P301 F an motor Indoor temp. sensor T emp. sensor T emp. sensor T emp. sensor Louver motor Drain pump motor Float switch Drain control rela y Pulse motor valv e Symbol FM TA TC1 TCJ TC2 LM1, LM2.
10 3. PAR TS RA TING 3-1. P ar ts Rating Model MMU- F an motor Motor f or horizontal grille Pulse motor Pulse motor valv e T A sensor TC1 sensor TC2 sensor TCJ sensor Float s witch Drain pump motor AP.
11 1 SET D A T A displa y Displa yed during setup of the timer . 2 Operation mode select display The selected operation mode is displa yed. 3 CHECK display Displa yed while the protectiv e de vice works or a trouble occurs . 4 Timer time display Time of the timer is displa yed.
12 Operation section Push each b utton to select a desired oper ation. This remote controller can operate the maximum 8 indoor units . • The details of the operation needs to be set up once, afterw ard, the air conditioner can be used by pushing ON / OFF b utton only .
13 3-4. Correct Usage When y ou use the air conditioner f or the first time or when y ou change the SET D A T A value , f ollow the proce- dure below . From the ne xt time, the oper ation displa y ed on the remote controller will star t by pushing the ON / OFF button only .
14 1 2 3 ON / OFF FA N TEMP . SWING/FIX TIME MODE VENT UNIT SET CL FIL TER RESET TEST TIMER SET 3-5. A utomatic Operation (Super Heat Reco very T ype Only) When y ou set the air conditioner in mode or.
15 3-6. TIMER Operation A type of timer operation can be selected from the f ollowing three types. OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Ev er y time, the operation stops after the set time has passed.
16 3-7. Adjustment of Wind Direction • While the air conditioner stops, the horizontal flap (Up/Do wn air direction adjustment plate) automati- cally directs upwar d. • While the air conditioner is in ready status f or heating, the horizontal flap (Up/Do wn air direction adjustment plate) directs upward.
17 3-8. Inf ormation Confirmation bef ore operation • T ur n on the power s witch 12 hours bef ore star ting the operation. • Mak e sure whether earth wire is connected.
18 3-9. Air Conditioner Operations and P erf ormance 3 minutes pr otection function 3-minutes protection function pre v ents the air conditioner from star ting for initial 3 minutes after the main po wer s witch/circuit breaker is turned on for re-starting the air conditioner .
19 3-10. When the Following Symptoms are Found Check the points described belo w bef ore asking repair ser vicing. Symptom Outdoor unit • White misty cold air or water is out. • Sometimes, noise “ Pushu !” is heard. Indoor unit •“ Swish” sound is heard sometimes.
20 Accessory parts and Parts to be procured locally H Accessory parts Refrigerant piping • Piping material used for the conventional refrigerant cannot be used. • Use copper pipe only with a wall thickness of 0.8 mm or more for Ø6.4, Ø9.5, Ø12.
21 • Install the air conditioner securely in a location where the base can sustain the weight of the unit adequately. • Perform the specified installation work to guard against an earthquake. If the air conditioner is not installed appropriately, accidents may occur due to the unit falling.
22 In case of wireless type The wireless remote controller can be operated up to a maximum of 8 m from the infra-red receiver. Therefore ensure that the remote controller will be mounted and used within this stated parameter.
23 Ceiling opening and installation of hanging bolts • Evaluate and determine the piping and wiring requirements inside the ceiling prior to the hanging of the unit. • After installation place of the indoor unit has been determined, create opening in ceiling and install the hanging bolts.
24 4 DRAIN PIPING WORK REQUIREMENT • Ensure insulating of the drain pipes and connecting parts on the indoor units. • The drain pipe should have a downward slope of at least 1/100 and ensure there are no swells or blockages as this will cause abnormal sounds.
25 Thermal insulating process • After checking of the draining, using the supplied thermal insulation fit to the flexible hose leaving no clearance at the connecting port of the indoor unit. • Fit locally procured thermal insulation to the drain pipe leaving no clearance between the supplied insulation.
26 Set notching upward. Main unit Pipe side (Required at the site) Attached heat insulating pipe Work using double spanner • Projection margin in flaring : B (Unit : mm) Rigid (Clutch type) Imperial.
27 Power supply specifications Power supply wiring and communication wiring are to be procured locally. For the power supply specification, follow the table below. Ensure power supply is adequate. An insufficient power supply could result in unit failure.
28 Remote controller wiring • Strip approximately 14 mm of insulation off of the connecting wires. • As the remote controller wire has no polarity, there is no problem if connections to indoor unit terminal blocks A and B are reversed.
29 In case of installation to high ceiling When the unit is to be installed at a height that exceeds the standard value, adjustment to the air volume is necessary. • For the “ Setup data ” in Procedure 2 , select from the “ Installable ceiling height list ”.
30 NOTE Do not use a forced operation in cases other than test operation because it applies an excessive load onto the air conditioner. In case of wired remote controller 1, 5 3 2, 4 ON / OFF FA N TEMP .
31 9 TROUBLESHOOTING Confirmation and check When a fault occurs in the air conditioner, the check code and the indoor unit No. will appear on the display part of the remote controller. The check code will only be displayed while the unit is in operation.
32 9 TROUBLESHOOTING Check code Wireless remote controller Outdoo r 7 -seg ment disp lay Sensor b loc k d ispl ay of receiv ing un it Main remote contro ller display Au xi liary co de Op er a t i on T.
33 New check code 1. Difference between the new check code and the current system The displaying method of the check code will change from this model onwards.
34 4. REFRIGERA TING CYCLE DIA GRAM Air heat e xchanger at indoor side Fa n M F an motor Sensor (T A) Sensor (TC1) Gas side Liquid side Strainer Capillary tube Pulse Motor V alve (PMV) Strainer Sensor (TCJ) Sensor (TC2) Functional part name Pulse Motor V alve PMV T emp .
35 5. CONTR OL OUTLINE 5-1. Contr ol Specifications No. 1 Outline of specifications 1. Distinction of outdoor unit When the power supply is reset, the outdoor units are distinguished, and control is e xchanged according to the distinctive results . 2.
36 E B A A zone: OFF B zone: Over 26˚C , below 28˚C , UL TRA LOW C zone: Over 28˚C , below 30˚C , LO W D zone: Over 30˚C , below 32˚C , MED E zone: HIGH D C 32 30 28 26 20 16 (˚C) No. 6 Outline of specifications 1. In all heating operation, the upper limit of the f an tap is set by one with higher temperature of TC2 sensor and TCJ sensor.
37 No. 8 Outline of specifications 1. The indoor unit which stops operation, ther mostat is OFF , or operates in F AN mode opens PMV of the indoor unit b y the specified opening degree when cooling refrigerant or oil recov er y signal is received from the outdoor unit.
38 No. 15 Outline of specifications <Operation standby> .......... Displa y on remote controller 1. •“ P05 ” is one of displa ys of power wire missing. •“ P05 ” of power cab le is detected. •“ COOL/DR Y ” operation cannot be perf ormed because the other indoor unit is under “ HEA T ” operation.
39 6. APPLIED CONTR OL 6-1. Setup of Selecting Function in Indoor Unit (Be sure to Execute Setup b y a Wired Remote Contr oller) <Procedure> Ex ecute the setup operation while the unit stops. 1 Push SET , CL , and TEST b uttons simultaneousl y for 4 seconds or more.
40 T able: Function selecting item n umbers (DN) (Items necessary to perform the applied contr ol at the local site are described.) DN 01 02 03 04 06 0d 0E 0F 10 11 12 13 14 1E 28 2A 2E 31 32 33 5d 60.
41 TYPE Item code [10] Indoor unit capacity Item code [11] T ype Compact 4-wa y Air Discharge Cassette Abbreviated Model name MMU-AP XXX MH Setup data 0001 0003 0005 0007 0009 Model 007 009 012 015 018 Setup data 0014 6-2.
42 n V entilating fan control fr om remote contr oller [Function] • The star t/stop operation can be operated from the wired remote controller when air to air heat e xchanger or v entilating f an is installed in the system. • The f an can be operated e v en if the indoor unit is not oper ating.
43 n Leaving-ON pre vention control [Function] • This function controls the indoor units individually . It is connected with cab le to the control P .C . board of the indoor unit. • In a group control, it is connected with cab le to the indoor unit (Control P .
44 7. TR OUBLESHOO TING 7-1. T r oub leshooting Summary 1. Bef ore troub leshooting 1) Applied models Q S-MMS Multi type models Indoor unit: MMX-APXXX, Outdoor unit: MMY -MAPXXXHT8, MMY -MAPXXXT7 R Su.
45 7-2. Chec k Method On the remote controller (Main remote controller , Central control remote controller) and the interface P .C. board of the outdoor unit, a chec k displa y LCD (Remote controller) or 7-segment displa y (on the outdoor interf ace P .
46 Check code Wi reless remote c ont roller Outdoor 7-seg ment disp lay Sensor block d ispl ay of receiving unit Main remote controll er display Auxi lia ry code O pera t i on T imer Ready Flash Check.
47 Err or detected by TCC-LINK central control de vice Check code Wi reless remote c ont roller Outdoor 7-seg ment disp lay Senso r block d ispl ay of receiving unit Main remote controll er display Au.
48 The chec k code 1 . The TCC LINK check code The displa ying method of the check code . Used characters Characteristics of code classification Block displa y TCC Link Alphabet + Decimal notation, 2 .
49 7-3. T r oub leshooting b y Check Displa y on Remote Contr oller In case of wired remote contr oller (RBC-AMT31E) CODE No. UNIT No. R.C. No. Check code Indoor unit No.
50 In case of central remote contr oller (TCB-SC642TLE) 1. Confirmation and chec k When a trouble occurred on the air conditioner , the check code and the indoor unit No . are displa yed on the displa y section of the remote controller . The chec k code is displa y ed while the air conditioner operates.
51 7-4. Chec k Code and Chec k P osition Displa y ed on the Remote Contr oller and Outdoor Unit (7-Segment Displa y of Interface) Check code Main remote controller E01 E02 E03 E04 E06 — E08 E09 E10 Outdoor 7-segment display Check code — — — — E06 E07 E08 — — Auxiliary code — — — — No .
52 Check code Main remote controller E12 E15 E16 E18 E19 E20 E23 E25 E26 E28 Outdoor 7-segment display Check code E12 E15 E16 — E19 E20 E23 E25 E26 E28 A uxiliary code 01 : Indoor/outdoor communication 02: Between outdoors communication — 00 : Capacity ov er 01 to: No .
53 Check code Main remote controller E31 F01 F02 F03 F04 F05 F06 F07 F08 F10 F12 Outdoor 7-segment display Check code E31 — — — F04 F05 F06 F07 F08 — F12 A uxiliary code 01 : IPDU1 error 02 : .
54 (*1) All stop only in case of the header unit The follo wer unit continues operation. Check code Main remote controller F13 F15 F16 F23 F24 F29 F31 H01 H02 Outdoor 7-segment display Check code F13 .
55 Check code Main remote controller H03 H04 H06 Outdoor 7-segment display Check code H03 H04 H06 Auxiliary code 01 : Compressor 1 side 02 : Compressor 2 side — — Detected position IPDU I/F I/F Ch.
56 Check code Main remote controller H07 H08 H14 Outdoor 7-segment display Check code H07 H08 H14 Auxiliary code — 01 : TK1 sensor error 02 : TK2 sensor error 03 : TK3 sensor error 04 : TK4 sensor e.
57 MG-SW : Magnet Switch, OCR : Over-current Rela y Check item (position) • Check TK1 sensor coming-off . • Check char acteristics of TK1 sensor resistance v alue . • Check TK1, TK2, TK3, and TK4 misconnection. • Check operation error of SV3E v alve .
58 Check code Main remote controller L06 L07 L08 L09 L10 L17 L18 L20 L28 L29 L30 — Outdoor 7-segment display Check code L06 — L08 — L10 L17 L18 — L28 L29 L30 L31 Auxiliary code No .
59 Check item (position) • Check the loc k of f an motor (A C f an). • Check cab ling. • Check full opening of outdoor service valves (Gas side , Liquid side). • Check clogging of outdoor PMV . (PMV1,2) • Check characteristics of TD1 sensor resistance value.
60 Check code Main remote controller P07 P10 P12 P13 P15 Outdoor 7-segment display Check code P07 P10 — P13 P15 Auxiliary code 01 : Compressor 1 side 02 : Compressor 2 side Indoor address with troub.
61 Check code Main remote controller P17 P19 P20 Outdoor 7-segment display Check code P17 P19 P20 A uxiliary code — Detected outdoor unit No . — Detected position I/F I/F I/F Check code name Disch.
62 Check code Main remote controller P22 P26 P29 P31 Outdoor 7-segment display Check code P22 P26 P29 — A uxiliary code 0 : IGBT shor tage 1 : Position detection circuit error 3 : Motor lock error 4 : Motor current error detection C: TH sensor temp.
63 Error detected b y TCC-LINK central control device Check code Display on central control device C05 C06 C12 P30 Outdoor 7-segment display Check code — — — (L20 is display ed.
64 Cautions when servicing for compressor 1. Removing wires of both compressors check output of the in v er ter as descr ibed below . How to c heck in ver ter output 1. T ur n off the power supply . 2. Remov e the compressor lead cab les from the compressors.
65 7-5. Diagnosis Pr ocedure f or Each Chec k Code Check code [E01] Check code name Communication err or between indoor and remote controller (Detected at remote controller side) Cause of operation 1. Remote controller inter-unit cable error 2. Indoor pow er error 3.
66 Check code [E06] Check code name Decreased number of indoor units Cause of operation 1. Communication lines (U1, U2) connection error between indoor and outdoor 2. Connector connection error of communica- tion for indoor P .C. board 3. Connector connection error of communica- tion for outdoor I/F board 4.
67 Check code [E08] Check code name Duplicated indoor addresses Cause of operation Indoor addresses are duplicated. Auxiliary code : Duplicated indoor address Using a main remote controller (RBC-AMT21E), check the setup item codes (DN code) 12, 13, and 14.
68 YES YES YES YES NO NO NO NO OK NG Is backup operation of outdoor unit being set up? Is No . of connected indoor units correct? Is setup of indoor unit HP correct? Is total capacity of connected indoor units within 135%? ( 1) For a service P .C. board, check outdoor HP setup .
69 Check code [E20] Check code name Unit connected to other line during automatic address Cause of operation When star ting automatic indoor address, a de vice in other line is connected.
70 Auxiliary code 01 02 03 04 05 06 07 P .C. boar d to be replaced IPDU1 IPDU2 IPDU1, 2 F an IPDU IPDU1, fan IPDU IPDU2, fan IPDU IPDU1, 2, fan IPDU , I/F Is jumper lead setup of the outdoor I/F P .C. board correct? (Jumper 7, 8, 9 ON) NO NO YES YES YES YES YES NO NO NO NO YES Connect the jumper lead.
71 Check code [F04] Check code name TD1 sensor error Cause of operation TD1 sensor Open/Shor t This error code means detection of Open/Shor t of TD1 sensor . Check disconnection of circuit f or connection of connector (TD1 sensor: CN502, White) and characteristics of sensor resistance value.
72 YES YES YES NO NO NO Are installed positions of TE1 sensor and TL sensor correct? Are connection of TE1 sensor connector and TL sensor connector normal? Are resistance characteristics of TL sensor and TE1 sensor normal? Check outdoor I/F P .C. board.
73 Check I/F P .C. board. NO YES Check pow er voltage and line. Correct power line . Check e xternal noise, etc. Is there any trouble of outdoor unit power supply? Check code name [F31] Check code name Outdoor EEPROM err or Cause of operation 1. Outdoor unit pow er error (V oltage, noise, etc.
74 Check code name [H04] [H14] Check code name Compressor 1 case thermo operation Compressor 2 case thermo operation Cause of operation 1. Case thermo circuit error 2. I/F P .C. board error 3. Service valve closed 4. Outdoor PMV clogging 5. SV4 valv e leak, Coil misinstallation 6.
75 Check code name [H07] Check code name Oil level do wn detection protection Cause of operation 1. V alves of balance pipes closed. 2. Miscabling or misinstallation of TK1 to TK4 sensors 3. TK1 to TK4 sensor error 4. Gas leak or oil leak of all outdoor units 5.
76 (*3) Check for solenoid v alve of outdoor unit (For multiple outdoor unit system) a) Clogging check f or SV3A valve • While outdoor unit is operating, set up SW01/02/03 = [2] [1] [3] to 7-segment displa y [Hr] [ 2], and push SW04 for 2 seconds or more .
77 Check code name [H16] Check code name Oil level detective circuit system err or (A uxiliary code : 02) Cause of operation 1. Detachment of TK2 sensor , miscabling, characteristics error of resistance value 2. Oil-equalization circuit error (Check v alve , capillar y clogging, strainer clogging) 3.
78 Check code name [H16] Check code name TK4 temperature detective circuit err or (A uxiliary code : 04) Cause of operation 1. Detachment of TK4 sensor , miscabling, characteristics error of resistance value 2. Check clogging and malfunction of SV3E valv e circuit.
79 Is there group cabling? Check indoor P .C. board. F ailure Replace There is individual indoor unit. Correct indoor group address. Check setup item code DN 12, 13, and 14 addresses.
80 Set up All cooling mode. Item code (DN)=OF Cooling only operation mode=0001 Check flow selector unit. Did set up All cooling to All cooling indoor unit? NO YES Are not two or more central control system identical network addresses connected? Check the network adaptor on the indoor P .
81 Cause of operation Outside error was input. Does outside device correctly oper ate? Check cause of the operation. Is outside device connected to connector CN80? Check indoor P .C. board. F ailure Replace Check outside de vice. F ailure Replace YES YES NO NO Check outdoor I/F P .
82 Check code name [P04] Check code name Actuation of high-pressure SW Cause of operation 1. High-pressure SW error 2. Service valve closed 3. Pd sensor error 4. Indoor/outdoor f an error 5. Indoor/outdoor PMV choke 6. Indoor/outdoor heat e xchanger clogging, air shor t circuit 7.
83 Check code name [P12] Check code name Indoor fan motor error Cause of operation 1. Cabling error of f an motor connector 2. F an motor error 3. Indoor P .C. board error T urn off power supply . Correct connector connection. Check indoor P .C. board (MCC-1402).
84 Check code name [P13] Check code name Outdoor liquid back detection err or Cause of operation 1. PMV1/PMV2 error 2. Pd sensor , Ps sensor error 3. Clogging of SV2 circuit 4. Clogging of SV3B circuit, balance pipe 5. Leakage of main discharge pipe 6.
85 Check code name [P15] Check code name Gas leak detection TD condition (Auxiliary code : 02) Cause of operation 1. Outdoor unit service valve closed 2. Outdoor PMV error 3. TD sensor error 4. SV4 circuit error 5. Refrigerant shor tage, clogging refrigerant circuit Coil, valv e body , coil installation, disconnection of cable, etc.
86 Check code name [P19] Check code name 4-way v alve operation error Cause of operation 1. 4-wa y valv e error 2. TS1 sensor/TE1 sensor error 3. Pd sensor/Ps sensor error 4. TE sensor/TL sensor misconnection Auxiliary code : Detected outdoor unit No .
87 All heating operation Is indoor PMV normal? Is SV5 circuit normal? Is there a clogging? Check and correct cab ling. Repair SV5 circuit. Replace PMV body . Repair faulty parts. Replace TC2 or TCJ sensor . Repair faulty parts. Eliminate the interfered causes .
88 Check code name [P26] Check code name G-T r shor t-circuit pr otection error Cause of operation 1. Outdoor unit power error 2. IPDU error/Cable connection error 3. Compressor error 4. IPDU P .C. board error Auxiliary code : 01: Compressor 1 side 02: Compressor 2 side Is power v oltage of outdoor unit normal? Replace IPDU P .
89 7-6. 7-Segment Displa y Function n 7-segment displa y on the outdoor unit (Interface P .C. board) On the interf ace control P .C . board, 7-segment LED to chec k the operating status is pro vided on the control P .C. board. The displa yed contents are changed b y combining the setup numbers of the rotary switches (SW01, SW02, and SW03) on P .
90 1. Data display of system inf ormation (Displa yed on the header outdoor unit onl y) ∗ mark: Indicates none on displa y SW01 1 SW02 1 2 3 4 5 6 7 8 9 SW03 3 Display contents Refrigerant name Displays refrigerant name .
91 2. Data display of outdoor unit inf ormation (Displa yed on eac h outdoor unit) SW01 1 SW02 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SW03 1 Display contents Error data A Displays outdoor unit n umber : [U1] to [U4] B Displays chec k code (Latest code only is displa yed.
92 3. Data display of outdoor c yc le (Display ed on each outdoor unit) SW01 1 SW02 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SW03 2 Display contents Pd pressure data Pd pressure (MP aG) is displa yed with decimal data. (MP aG: Appro x. 1/10 value of kg/cm 2 G data) Ps pressure data Ps pressure (MP aG) is displa yed with decimal data.
93 5. Outdoor EEPROM write-in err or code displa y (Displa yed on the header unit onl y) ∗ The latest error code written in EEPROM of each outdoor unit is displa y ed.
94 8. CONFIGURA TION OF CONTR OL CIRCUIT 8-1. Indoor Unit 8-1-1. Indoor Contr oller Block Dia gram Compact 4-wa y Air Dischar g e Cassette T ype 1. Connection of wired remote controller Same as left *2 Same as left *2 #3 A B #2 A B L U1 U2 N Pow e r supply Outdoor unit L U1 U2 N Pow e r supply Outdoor unit Max.
95 2. Connection of wireless remote controller kit Compact 4-wa y Air Dischar g e Cassette T ype Emergent operation SW CPU CPU H8/3039 Driver L AB NU 1 U 2 U1 U2 Same as left *2 #3 A B L U1 U2 N Pow e r supply Outdoor unit Same as left *2 #2 A B L U1 U2 N Pow e r supply Outdoor unit Network adaptor (Option) Indoor unit #1 Network adaptor P .
96 3. Connection of both remote controller and wireless remote contr oller kit Compact 4-wa y Air Dischar g e Cassette T ype Emergent operation SW Function setup SW Buzzer Remote controller communicat.
97 8-1-2. Indoor Print Circuit Boar d MCC-1402 Compact 4-wa y Air Dischar g e Cassette T ype DC fan output PMV output DC fan return *1 Float SW Flap (Used only for 4-w ay Air Discharge Cassette T ype,.
98 8-1-3. Optional Connector Specifications of Indoor P .C. Boar d Function Humidifier output F an output — Option output Outside error input — — CHK operation check DISP e xhibition mode EXCT demand Connector No. CN66 CN32 CN61 CN60 CN80 CN20 CN70 CN71 CN72 CN73 Pin No.
99 9. DET A CHMENTS 9-1. Indoor Unit MMU-AP0071MH, AP0091MH, AP0121MH, AP0151MH, AP0181MH Ceiling panel: RBC-UM11PG-E Preparing w ork: 1. Before w ork, be sure to stop the power supply of the air conditioner and turn off switch of the po wer supply break er .
100 No. 3 P ar t name Adjust corner cover Procedure 1. Detachment 1) P erform work of procedure of 1 -1. 2) T ur n clockwise scre ws (4 positions) at the suction por t cor ner until adjust cor ner cov er rises up. NO TE) When you w ork, keep the torque at below 12N •m.
101 No. 5 P ar t name Control P .C. board Procedure Remarks 1. Detachment 1) P erform works of procedure 1 -1- and 2 -1. 2) Remov e the connectors connected from the control P .
102 No. 6 P ar t name Electric par ts box Procedure Remarks 1. Detachment 1) P erform works of procedure 1 -1-and 2 -1. 2) Remove connectors of the lead wire connected to the f ollowing connectors of the control P .
103 No. 7 P ar t name F an guard Procedure 1. Detachment 1) Perf orm wor k of procedure 1 -1. 2) T ake off screws fixing the f an guard. (Ø 4 × 10, [Screws f or plastic molding] 4 pcs .) NO TE) The specification of fixing scre ws for the f an guard diff ers from those of other fixing screws.
104 No. 10 P ar t name F an motor Procedure 1. Detachment 1) P erform work of procedure 9 . 2) T ake off screws fix ed with lead holding brac ket of the f an motor . ( Ø 4 × 10, 2 pcs .) 3) Open wir ing holding par t of the f an motor lead holding brack et and then take off the f an motor lead wire from the brack et.
105 No. 11 P ar t name Drain pan Procedure 1. Detachment 1) P erform works of procedure 4 -1 and 8 -1. 2) Remove the dr ain cap and extract dr ain water accumulated in the drain pan. NO TE) When removing the drain cap , be sure to receiv e drain w ater with a buc ket, etc.
106 No. 13 P ar t name PMV (Pulse Motor V alve) Procedure 1. Detachment 1) Perf orm wor k of procedure 11 -1. 2) T ake off scre ws ( Ø 4 × 10, 3 pcs.) fixing the piping cov er to remov e the piping cov er . 3) Cut off binding band that binds the PMV lead wires.
107 No. 14 P ar t name Heat e xchanger Procedure 1. Detachment 1) Recover refrigerant gas . 2) Remove the refrigerant pipe at indoor unit side. 3) Perf orm wor k of procedure 11 -1. 4) T ake off scre ws ( Ø 4 × 10, 3 pcs.) fixing the piping cov er to remov e the piping cov er .
108 10. P .C. BO ARD EXCHANGE PR OCEDURES 10-1. Exchang e of P .C. Boar d f or Indoor Service P art code 431-6V -269 Model type MMU-AP ✻✻ ✻✻ ✻✻ ✻✻ ✻✻ 1H series MMU-AP ✻✻ ✻✻.
109 Method 2 Bef ore exchange, it is impossible to read out the setup contents due to EEPR OM error . Exchange of P .C . board for ser vice & pow er ON: Pr ocedure 2 ò Writing-in of the setup dat.
110 Pr ocedure 2 : Exchange of P .C. board f or service 1. Exchange P .C . board with a P .C. board f or ser vice. In this time, the jumper line (cut) setup or the (shor t-circuit) connecting connector setup on the pre vious P .C . board should be reflected on P .
111 Pr ocedure 3 : Writing-in of setup contents to EEPROM (The EEPR OM contents which are installed on the service P .C . board ha v e been set up at shipment from the f actor y .) 1. Push SET + CL + TEST b uttons simultaneously f or 4 seconds or more .
112 <Make a note of the setup contents. (Item code list (Example))> DN 01 02 03 06 0d 0F 10 11 12 13 14 19 1E 28 2E 32 5d 60 Item Filter sign lighting time Dir ty condition of filter Central control address Heating inlet temp .
113 11. EXPLODED VIEWS AND P ARTS LIST 11-1. Ceiling P anel RBC-UM11PG(W)E Location P art No. Description No. 301 43109414 Gr ille, Air Inlet 302 4302C059 Motor , Louv er 303 43180332 Air Filter 304 4.
114 11-2. Compact 4-way Air Disc har ge Cassette T ype MMU-AP0071MH, AP0091MH, AP0121MH, AP0151MH, AP0181MH 234 229 206 230 215 213 220 232 219 216 217 211 211 207 229 227 225 226 222 237 235 202 245 .
115 Location P art No. Description Remarks No. 201 43120225 F an Ass ’ y , T urbo 202 43122094 Bell Mouth 203 43172185 P an Ass ’ y , Drain 204 43172186 P an Ass ’ y , Drain 205 43121738 Motor ,.
116 Location P art No. Description No. 401 43050425 Sensor Ass ’ y , Ser vice, TC 402 43050426 Sensor , Ser vice, T A 403 43050320 Sensor Ass ’ y , Ser vice, TG 404 43160574 T er minal, 4P 405 43160575 T er minal Bloc k, 2P , 20A 406 4316V289 P .C.
TOSHIBA CARRIER CORPORA TION 2 CHOME 12-32, KONAN, MINA TOKU, TOK YO , 108-0075, JAP AN Cop yr ight © 2005 T OSHIBA CARRIER CORPORA TION, ALL Rights Reser v ed.
An important point after buying a device Toshiba MMU-AP0121MH (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Toshiba MMU-AP0121MH yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Toshiba MMU-AP0121MH - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Toshiba MMU-AP0121MH you will learn all the available features of the product, as well as information on its operation. The information that you get Toshiba MMU-AP0121MH will certainly help you make a decision on the purchase.
If you already are a holder of Toshiba MMU-AP0121MH, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Toshiba MMU-AP0121MH.
However, one of the most important roles played by the user manual is to help in solving problems with Toshiba MMU-AP0121MH. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Toshiba MMU-AP0121MH along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
