Page 1: Service Manual
Revision 2 : Jul., 2013 Revision 3 : Dec., 2013 Revision 4 : Sep., 2014 AIR CONDITIONER (MULTI TYPE) SERVICE MANUAL Outdoor Unit < SUPER HEAT RECOVERY MULTI-i > Model name: MMY-MAP0724FT9UL MMY-MAP0964FT9UL MMY-MAP1204FT9UL MMY-MAP0724FT6UL MMY-MAP0964FT6UL MMY-MAP1204FT6UL Flow Selector Unit (FS unit) Model name:...
Page 2: Table Of Contents
CONTENTS Precautions for Safety ....................7 New Refrigerant (R410A) ..................15 1. SPECIFICATIONS ....................17 1-1. 208/230V model ........................17 1-2. 460V model ......................... 21 2. WIRING DIAGRAM ....................25 2-1. Outdoor Unit ........................25 2-2. FS unit (Flow Selector unit) ....................29 3.
Page 3 7-3. Applied Control Using Optional Board for Outdoor Unit ..........70 7-3-1. Power peak-cut Control (Standard): TCB-PCDM4UL ............71 7-3-2. Power peak-cut Control (Extended) : TCB-PCDM4UL ............72 7-3-3. Snowfall Fan Control : TCB-PCMO4UL ................73 7-3-4. External master ON/OFF Control : TCB-PCMO4UL ............73 7-3-5.
Page 4 14-7. Noise Filter P.C. Board (MCC-1608 A, B) Replacement Procedure ......251 14-8. Noise Filter P.C. Board (MCC-1625 A, B, C) ..............254 15. EXPLODED DIAGRAM / PARTS LIST .............. 257 15-1. MMY-MAP0724FT9UL ..................... 257 15-2. MMY-MAP0964FT9UL, MMY-MAP1204FT9UL .............. 264 15-3. MMY-MAP0724FT6UL ..................... 271 15-4.
Page 5 Generic Denomination: Air Conditioner Definition of Qualified Installer or Qualified Service Person The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
Page 6: Warning Indications On The Air Conditioner Unit
Warning Indications on the Air Conditioner Unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions. If removing the label during parts replace, stick it as the original. Warning indication Description ELECTRICAL SHOCK HAZARD RISQUE D'ÉLECTROCUTION WARNING: RISK OF ELECTRIC SHOCK.
Page 7: Precautions For Safety
Precautions for Safety The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for both the indoor and outdoor units to the OFF position.
Page 8 WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person (*1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems.
Page 9 If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, put a sign in place so that no-one will Do not bring a approach the work location before proceeding with the work.
Page 10 When the refrigerant gas leaks, find up the leaked position and repair it surely. If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
Page 11 Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
Page 12: Carrying In The Outdoor Unit
Carrying in the Outdoor Unit CAUTION Handle the outdoor unit carefully, observing the following items. • To use a forklift or other machinery for loading / unloading in transportation, insert the prongs of the forklift into the rectangular holes for handling as shown below. •...
Page 13 Weight centre and weight Weight centre of an outdoor unit Unit: in (mm) Model type Model type (lbs (kg)) (in (mm)) (in (mm)) (in (mm)) MAP0724FT9UL 19.3” (490) 14.6” (370) 26.8” (680) 583” (246) MAP0724FT6UL 20.9” (530) 15.7” (400) 25.8” (655) 658”...
Page 14: Adding Refrigerant
Adding refrigerant After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging of refrigerant. Calculation of additional refrigerant charge amount Additional refrigerant charge Adjustment amount of Additional refrigerant charge Actual length of liquid × × (lbs) amount per liquid pipe 1ft refrigerant...
Page 15: New Refrigerant (R410A)
New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
Page 16 4. Tools (1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.
Page 17: Specifications
1.SPECIFICATIONS A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. 1-1. 208/230V model Single unit (System with Non-ducted indoor units) Outdoor unit model name MMY- MAP0724FT9UL MAP0964FT9UL MAP1204FT9UL Power Supply Center Voltage V/Ph/Hz (208 / 230) / 3 / 60...
Page 18 Single unit A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. (System with ducted indoor units) Outdoor unit model name MMY- MAP0724FT9UL MAP0964FT9UL MAP1204FT9UL Power Supply Center Voltage V/Ph/Hz (208 / 230) / 3 / 60 Cooling Nominal capacity...
Page 19 Combination unit A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. (System with Non-ducted indoor units) Outdoor unit set model name MMY- AP1444FT9UL AP1684FT9UL AP1924FT9UL AP2164FT9UL AP2404FT9UL MAP0724FT9UL MAP0964FT9UL MAP0964FT9UL MAP1204FT9UL MAP1204FT9UL...
Page 20 Combination unit A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. (System with ducted indoor units) Outdoor unit set model name MMY- AP1444FT9UL AP1684FT9UL AP1924FT9UL AP2164FT9UL AP2404FT9UL MAP0724FT9UL MAP0964FT9UL MAP0964FT9UL MAP1204FT9UL MAP1204FT9UL...
Page 21: Model
1-2. 460V model A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. Single unit (System with Non-ducted indoor units) Outdoor unit model name MMY- MAP0724FT6UL MAP0964FT6UL MAP1204FT6UL Power Supply Center Voltage V/Ph/Hz 460 / 3 / 60...
Page 22 Single unit A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. (System with ducted indoor units) Outdoor unit model name MMY- MAP0724FT6UL MAP0964FT6UL MAP1204FT6UL Power Supply Center Voltage V/Ph/Hz 460 / 3 / 60 Cooling Nominal capacity...
Page 23 Combination unit A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. (System with Non-ducted indoor units) Outdoor unit set model name MMY- AP1444FT6UL AP1684FT6UL AP1924FT6UL AP2164FT6UL AP2404FT6UL MAP0724FT6UL MAP0964FT6UL MAP0964FT6UL MAP1204FT6UL MAP1204FT6UL...
Page 24 Combination unit A value of the specifications list is numerical value as of Jun., 2013 and may change it without a notice. (System with ducted indoor units) Outdoor unit set model name MMY- AP1444FT6UL AP1684FT6UL AP1924FT6UL AP2164FT6UL AP2404FT6UL MAP0724FT6UL MAP0964FT6UL MAP0964FT6UL MAP1204FT6UL MAP1204FT6UL...
Page 25: Wiring Diagram
2. WIRING DIAGRAM 2-1. Outdoor Unit Model: MMY-MAP0724FT9UL · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·...
Page 26 MMY-MAP0724FT9UL ⎯ 26 ⎯...
Page 27 MMY-MAP0964FT6UL, MMY-MAP1204FT6UL ⎯ 27 ⎯...
Page 28 MMY-MAP0964FT9UL, MMY-MAP1204FT9UL ⎯ 28 ⎯...
Page 29: Fs Unit (Flow Selector Unit)
2-2. FS unit (Flow Selector unit) Specifications Model Name RBM-Y0383FUL RBM-Y0613FUL RBM-Y0963FUL Power supply 230 V (208/230 V) 1phase 60 Hz Connectable indoor unit capacity (kBtu/h) Below 38 38 to below 61 61 to 96 or less Connectable indoor units Height (in) 7.49 7.49...
Page 30: Installation Space
<Installation space> (Unit: in (mm)) <RBM-Y0383FUL / Y0613FUL> 3.94"(100) or more 3.94"(100) or more Outdoor unit side Indoor unit side Hanging bracket 1.97"(50) or more Electrical control 9.85"(250) or more 9.85"(250) or more box cover Check, parts 17.7"×17.7"(450x450) or more <RBM-Y0383FUL (When attached pipes are used)>...
Page 31: Parts Rating
3. PARTS RATING 3-1. Outdoor Unit ∗∗∗ (208/230V model: MMY-MAP 4FT9UL) MMY-MAP Parts Name Model Specification 1 Compressor DA421A3FB-28M Output: 2.3kW × 2 — — Output: 2.1kW × 3 — — Output: 2.7kW × 3 — — 2 4-way valve coil STF-01AQ1839UA1 AC208 ~ 230V, 60Hz 3 PMV coil...
Page 32: Outdoor Unit (460V Model)
3-2. Outdoor Unit ∗∗∗ (460V model: MMY-MAP 4FT6UL) MMY-MAP Parts Name Model Specification 1 Compressor DA421A3FB-29M1 Output: 2.3kW × 2 — — Output: 2.1kW × 3 — — Output: 2.7kW × 3 — — 2 4-way valve coil STF-01AQ1839UA1 AC208 ~ 230V, 60Hz 3 PMV coil HAM-MD12TF-6 DV12V...
Page 33: Outdoor Inverter (208/230V Model)
3-3. Outdoor Inverter ∗∗∗ 208/230V model: MMY-MAP 4FT9UL MMY-MAP Name Model Specification 096 120 Power supply terminal block HP-T3015-31-3P-L3S AC600V/100A,3P Relay terminal block for power supply JXO-6003 AC600V/60A,3P Relay terminal block for power supply JXO-6003 AC600V/60A,3P — Relay terminal block for reactor JXO-3006 AC600V/30A,6P —...
Page 34: Outdoor Inverter (460V Model)
3-4. Outdoor Inverter ∗∗∗ 460V model: MMY-MAP 4FT6UL MMY-MAP Name Model Specification 096 120 Power supply terminal block HP-T3015-31-3P-L3S AC600V/100A,3P Relay terminal block for reactor JXO-6B AC250V/20A,6P — Communication terminal block JXO-B2H AC30V (or no more then DC42V) Reactor (For comp.) CH-79 5.8mH/16A Reactor (For fan)
Page 35: Parts Layout In Outdoor Unit
3-5. Parts Layout in Outdoor Unit 072 type ∗ Model: MMY-MAP0724FT – 35 –...
Page 36 096, 120 type ∗ ∗ Model: MMY-MAP0964FT , MAP1204FT – 36 –...
Page 37: Parts Layout In Inverter Assembly
3-6. Parts Layout in Inverter Assembly 208/230V model: MMY-MAP0724FT9UL – 37 –...
Page 38 208/230V model: MMY-MAP0964FT9UL, MMY-MAP1204FT9UL – 38 –...
Page 39 460V model: MMY-MAP0724FT6UL – 39 –...
Page 40 460V model: MMY-MAP0964FT6UL, MMY-MAP1204FT6UL – 40 –...
Page 41: Outdoor (Inverter) Print Circuit Board
3-7. Outdoor (Inverter) print circuit board 3-7-1. Interface P.C. board (MCC-1606) – 41 –...
Page 42: Inverter P.c. Board For Compressor (Mcc-1595) A3-Ipdu For 208/230V Model : Mmy-Map 4Ft9Ul
3-7-2. Inverter P.C. board for compressor (MCC-1595) A3-IPDU ∗∗∗ 4FT9UL For 208/230V model : MMY-MAP – 42 –...
Page 43: For 460V Model : Mmy-Map
3-7-3. Inverter P .C. board for compressor (MCC-1596) A3-IPDU ∗∗∗ For 460V model : MMY-MAP 4FT6UL – 43 –...
Page 44: Inverter P.c. Board For Fan Motor (Mcc-1610) Fan-Ipdu
3-7-4. Inverter P.C. board for fan motor (MCC-1610) FAN-IPDU – 44 –...
Page 45: Noise Filter P.c. Board (Mcc-1608 -A, -B) For 208/230V Model : Mmy-Map 4Ft9Ul
3-7-5. Noise Filter P .C. board (MCC-1608 -A, -B) ∗∗∗ For 208/230V model : MMY-MAP 4FT9UL – 45 –...
Page 46: Noise Filter P.c. Board (Mcc-1625 -A, -B, -C) For 460V Model : Mmy-Map 4Ft6Ul
3-7-6. Noise Filter P .C. board (MCC-1625 -A, -B, -C) ∗∗∗ For 460V model : MMY-MAP 4FT6UL – 46 –...
Page 47: Refrigerant Piping Systematic Drawing
4. REFRIGERANT PIPING SYSTEMATIC DRAWING Model: MMY-MAP0724FT UL Fan motor Right side (TO) Main heat exchanger Right side sub heat exchanger PMV 1 PMV 2 Left side PMV 4 Main heat exchanger (TE 1) Left side sub heat exchanger (TE 2) (SV 11) 4-way valve...
Page 48 Model: MMY-MAP0964FT UL, MMY-MAP1204FT UL Fan motor Right side (TO) Main heat exchanger Right side sub heat exchanger Left side PMV 1 PMV 2 PMV 4 Main heat exchanger (TE 1) Left side sub heat exchanger (TE 2) 4-way (SV 11) valve (SV 5) (TS 1)
Page 49 Explanation of Functional Parts Functional part name Functional outline (Connector CN321: White) SV3A 1) Supplies oil reserved in the oil header during ON time. (Connector CN321: White) SV3B 1) Returns oil supplied in the balance pipe to the compressor. (Connector CN321: White) SV3C 1) Pressurizes oil reserved in the oil header during ON time.
Page 50 Configuration of outdoor unit heat exchanger Propeller fan Propeller fan Fan motor Fan motor Main heat Main heat exchanger exchanger Wind Wind Wind Wind direction direction direction direction Sub heat Sub heat exchanger exchanger ∗ ∗ MMY-MAP0724FT MMY-MAP0964FT ∗ MMY-MAP1204FT Left side Right side Left side...
Page 51: System Refrigeerant Piping Schematic Diagrams
5. SYSTEM REFRIGERANT PIPING SCHEMATIC DIAGRAMS <Exchange of operation mode> For exchange between each operation mode, follow the table below: When “Momentary stop” is executed, the unit does not operate for 3 minutes after stop of operation before update. After exchange All cooling Mainly cooling Mainly heating...
Page 52: All Cooling Mode (Operation Of Cooling Only) When Outside Temperature Is High (Standard: 50°F Or Higher) / Defrost Mode
5-1. All Cooling mode (Operation of cooling only) when outside temperature is high (Standard: 50°F or higher) / Defrost mode ∗ ∗ Outdoor header unit (MMY-MAP0964FT Outdoor follower unit (MMY-MAP0724FT Fan motor Fan motor Right side Right side Main Main heat exchanger heat exchanger Right side sub heat exchanger...
Page 53: All Cooling Mode (Operation Of Cooling Only) When Outside Temperature Is Low (Standard: 50°F Or Lower)
5-2. All Cooling mode (Operation of cooling only) when outside temperature is low (Standard: 50°F or lower) ∗ ∗ Outdoor header unit (MMY-MAP0964FT Outdoor follower unit (MMY-MAP0724FT Fan motor Fan motor Right side Right side Main Main heat exchanger heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV2...
Page 54: All Heating Mode (Operation Of Heating Only)
5-3. All Heating mode (Operation of heating only) ∗ ∗ Outdoor header unit (MMY-MAP0964FT Outdoor follower unit (MMY-MAP0724FT Fan motor Fan motor Right side Right side Main Main heat exchanger heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV2 PMV2 PMV1...
Page 55: Mainly Cooling Mode (Operating Cooling Function Mainly, Collective Operation Of Cooling And Heating Operation)
5-4. Mainly cooling mode (Operating cooling function mainly, collective operation of cooling and heating operation) ∗ ∗ Outdoor header unit (MMY-MAP0964FT Outdoor follower unit (MMY-MAP0724FT Fan motor Fan motor Right side Right side Main Main heat exchanger heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1 PMV2 PMV1 PMV2...
Page 56: Mainly Heating Mode (Operating Heating Function Mainly, Collective Operation Of Cooling And Heating Operation)
5-5. Mainly heating mode (Operating heating function mainly, collective operation of cooling and heating operation) ∗ ∗ Outdoor header unit (MMY-MAP0964FT Outdoor follower unit (MMY-MAP0724FT Fan motor Fan motor Right side Right side Main Main heat exchanger heat exchanger Right side sub heat exchanger Right side sub heat exchanger PMV1 PMV2 Left side...
Page 57: Emergency Operation (All Cooling Operation At Backup Of The Header Unit)
5-6. Emergency operation (All cooling operation at backup of the header unit) ∗ ∗ Outdoor header unit (MMY-MAP1204FT Outdoor follower unit (MMY-MAP1204FT Temporal set header unit in Trouble emergency operation When PMV leaked, service valve at liquid side = Close fully Fan motor Fan motor Right side...
Page 58: Emergency Operation (All Heating Operation At Backup Of The Header Unit)
5-7. Emergency operation (All heating operation at backup of the header unit) ∗ ∗ Outdoor header unit (MMY-MAP1204FT Outdoor follower unit (MMY-MAP1204FT Temporal set header unit in Trouble emergency operation When PMV leaked, service valve at liquid side = Close fully Fan motor Fan motor Right side...
Page 59: Refrigerant Recovery (During Pump-Down Operation) Of The Troubled Outdoor Unit) (In Case Of Trouble Of Follower Unit)
5-8. Refrigerant recovery (during pump-down operation) of the troubled outdoor unit) (In case of trouble of follower unit) ∗ ∗ Outdoor header unit (MMY-MAP0964FT Outdoor follower unit (MMY-MAP0724FT Trouble Fan motor Fan motor Right side Right side Main Main heat exchanger heat exchanger Right side sub heat exchanger Right side sub heat exchanger...
Page 60: Control Outline
6. CONTROL OUTLINE Item Specification outline Remarks Pulse motor 1. PMV1, 2 control (PMV1 and 2) • During all valve (PMV) heating, collective 1) During air conditioner operation, the pulse count of a PMV (pulse motor valve) is control heating, PMV controlled between 90 and 1000.
Page 61 Item Specification outline Remarks Outdoor fan 1. All cooling fan control control 1) Outdoor fan speed (mode) is controlled on the basis of measurements provided by the Pd pressure sensor. 2) For a specified period after the start of cooling operation, the header outdoor unit controls outdoor fan speed (mode) on the basis of measurements provided by the Pd pressure sensor.
Page 62 Item Specification outline Remarks Capacity 1) The compressors of the header and follower units are controlled on the basis of • Minimum rps of control capacity demand issued by indoor controllers. the compressor is 24 rps. 2) The two or three compressors featured in an outdoor unit operate on a rotational basis, so that, every time they come to a stop, their order of startup changes.
Page 63 Item Specification outline Remarks Oil equation This control function is aimed at preventing compressors from running out of oil by • Oil accumulated control evening out the oil supply to outdoor units, and is basically performed by opening/ in the oil closing solenoid valves SV3A, SV3B, SV3C, SV3D, and SV3F.
Page 64 Item Specification outline Remarks Defrosting 1. Defrosting commencement conditions • Frost formation control temperature is • During heating operation, the cumulative duration of operation in which TE1 (reverse 30°F (–1°C). sensor temperature falls below frost formation temperature is measured, and defrosting when this reaches 55 minutes, defrosting control is introduced.
Page 65 Item Specification outline Remarks Release valve 1. SV2 gas balance control control This control function is aimed at achieving gas balance by opening SV2 while compressors are turned off so as to reduce their startup load the next time they are turned on.
Page 66 Item Specification outline Remarks High pressure This control function is aimed at automatically shutting down a compressor in an • When Pd ≥ P0 = release outdoor unit depending on Pd pressure. It is individually performed by the header 500 psi (3.45 MPa), compressor unit and each follower unit.
Page 67 Item Specification outline Remarks 11 A3-IPDU IPDU controls inverter compressors by issuing commands relating to compressor control speeds, speed increases/decreases, and current release control values via the interface P.C. board. The main control functions of the IPDU P.C. board are described below. 1.
Page 68 <Other points to note> Cooling operation under low outside temperature conditions 1) If pressure falls to extremely low levels, indoor units may be shut down via freeze prevention control based on the indoor TC sensor. 2) If pressure falls to extremely low levels, frequency may be reduced via cooling capacity control. 3) When the discharge temperature sensor reading falls below 140°F (60°C), the frequency may be increased above the level called for by the commandreceived from the indoor unit.
Page 69: Applied Control And Function
7. APPLIED CONTROL AND FUNCTION 7-1. Applied Control for Outdoor Unit The outdoor fan high static pressure support functions are made available by setting relevant switches provided on the interface P.C. board of the outdoor unit. 7-2. Outdoor Fan High Static Pressure Shift Purpose/characteristics This function is used when connecting a duct to the discharge port of an outdoor unit (as part of, for example, unit installation on the floor by floor installation.)
Page 70: Applied Control Using Optional Board For Outdoor Unit
7-3. Applied Control Using Optional Board for Outdoor Unit Optional control P.C. boards provide access to a range of functions as listed below. Outdoor unit Control P.C. board to be used Outdoor unit interface P.C. board setting* for control Function Jumper to be P.C.
Page 71: Power Peak-Cut Control (Standard): Tcb-Pcdm4Ul
7-3-1. Power peak-cut Control (Standard): TCB-PCDM4UL L1: Display lamp suring power peak cut control Header outdoor unit Locally procured Optional PCB Power supply Display Outdoor unit relay interface PCB [OPERATION] Shield wire PJ17 CN513 SW07 [ON] [OFF] 1 2 3 4 Bit 2 OFF Shield Connection cable...
Page 72: Power Peak-Cut Control (Extended) : Tcb-Pcdm4Ul
<SW07 Bit 2 OFF (two-step control)> Power peak-cut control is enabled as long as SW1, as shown on the wiring diagram, is ON (continuously). SW07 Bit 1 Indicator relay Jumper wire Input Bit 1 OFF Bit 1 ON (L1) 100% (normal operation) 100% (normal operation) 0% (forced stop) Approx.
Page 73: Snowfall Fan Control : Tcb-Pcmo4Ul
7-3-3. Snowfall Fan Control : TCB-PCMO4UL Header outdoor unit Locally procured Connection Outdoor unit Optional PCB cable Snowfall sensor interface PCB COOL CN509 PJ17 HEAT Shield wire SW1: Snowfall detection switch (snowfall sensor) Operation An external snowfall signal turns on the outdoor unit fan. Terminal Input signal Operation...
Page 74: Night Operation (Sound Reduction) Control : Tcb-Pcmo4Ul
7-3-5. Night operation (sound reduction) Control : TCB-PCMO4UL Header outdoor unit Locally procured Connection Optional PCB Outdoor unit cable interface PCB COOL CN508 PJ17 HEAT Shield wire SW1: Night time signal switch Operation This function decreases noise at night or other times as necessary. Terminal Input signal Operation...
Page 75: Operation Mode Selection Control : Tcb-Pcmo4Ul
7-3-6. Operation Mode Selection Control : TCB-PCMO4UL Header outdoor unit Locally procured Connection Outdoor unit Optional PCB cable interface PCB COOL CN510 PJ17 HEAT Shield wire SW1: Cooling mode specified input switch SW2: Heating mode specified input switch NOTE SW1: COOL mode selection switch SW2: HEAT mode selection switch Input signal Operation...
Page 76: Error/Operation Output : Tcb-Pcin4Ul
7-3-7. Error/Operation Output : TCB-PCIN4UL Locally procured Header outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB OUTPUT1 SW16 CN511 PJ20 OUTPUT2 1 2 3 4 OUTPUT3 Shield wire Operation In-operation output: An in-operation indication signal is output as long as at least one indoor unit is in operation in the line.
Page 77: Compressor Operation Output : Tcb-Pcin4Ul
7-3-8. Compressor Operation Output : TCB-PCIN4UL Locally procured Outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB CTR1 OUTPUT1 SW16 CTR2 CN514 PJ20 OUTPUT2 1 2 3 4 CTR3 OUTPUT3 Shield wire When a compressor is in operation, a relay connected to the output terminal assigned to it is turned on (closed).
Page 78: Operating Rate Output : Tcb-Pcin4Ul
7-3-9. Operating Rate Output : TCB-PCIN4UL Locally procured Header outdoor unit (See “NOTE”) Optional PCB Outdoor unit interface PCB OUTPUT1 SW16 PJ20 OUTPUT2 MONITOR CN514 1 2 3 4 OUTPUT3 Shield wire At the output terminals, a signal is present (relay closed) or absent (relay open) in various combinations according to the system operation factor, as shown in the diagram.
Page 79: Test Operation
8. TEST OPERATION 8-1. Procedure and Summary of Test Operation A test operation is executed with the following procedure. When problems or an error occurs at any step, remove the causes of the problem or error referring to “9 TROUBLESHOOTING.” Check basic items, mainly the installation work.
Page 80: Check Items Before Test Operation (Before Poweringon)
8-2. Check Items before Test Operation (before poweringon) Prior to the test operation, check the following items to verify there are no problems with the installation work. (1) In the case that a central control system is not connected: (2) (4) Header unit (A) Follower unit (B) Outdoor unit...
Page 81 (2) In the case that a central control system is connected (before address setup) Central remote controller To other refrigerant line Other refrigerant line Header unit (A) Follower unit (B) Outdoor unit To indoor unit Indoor unit Remote Remote Remote controller controller controller...
Page 82 (3) Connection check of FS (Flow Selector) unit with indoor unit To Header unit U1/U2 Cooling/Heating Cooling/Heating Cooling/Heating FS unit FS unit FS unit CN01 CN02 CN01 CN02 CN01 CN02 U1 U2 U1 U2 U1 U2 CN81 CN81 CN81 Indoor unit Indoor unit Indoor unit Remote Controller...
Page 83 Checklist 1 • Check that there are no problems with the installation work. Is the capacity of the Outdoor total capacity Header unit (A) Indoor unit circuit breaker (Earth Follower unit (B) leakage breaker) appropriate? Is the gauge of the Header unit (A) AWG Indoor unit AWG power cable correct?
Page 84 Checklist 2 • Check the additional amount of refrigerant. Calculate the additional amount of refrigerant from the additional amount of refrigerant (A) by the pipe diameter on the liquid side, the pipe length to be connected, and the corrective amount of refrigerant (B) according to system capacity.
Page 85: Check At Main Power-On
8-3. Check at Main Power-on After turning on the main power of the indoor units and outdoor unit in the refrigerant line to conduct a test operation, check the following items in each outdoor and indoor unit. (After turning on the main power, be sure to check in order: indoor unit → outdoor unit.) <Check on the outdoor unit>...
Page 86: Address Setup
8-4. Address Setup This product requires address setup before operation. Follow this procedure for address setup. 8-4-1. Precautions (1) Address setup is not performed simply by turning on the power supply. (2) For indoor units, address setup can be done either by “manual address setup” or “by automatic address setup” Automatic address setup: Setup from SW15 on the interface PC board of the header unit Manual address setup: Setup from the wired remote controller.
Page 87: Address Setup Procedure
8-4-3. Address Setup Procedure Single refrigerant system: go to Address setting procedure 1 Multipul refrigerant system with cetral control: go to Address setting procedure 2 Without central control when controling 2 or more (Example) single refrigerant system with central control refrigerant lines centrally Address setting To procedure 1...
Page 88 NOREQUIREMENTE • When 2 or more refrigerant lines are controlled as a group, be sure to turn on all the indoor units in the group before setting addresses. • If you set the unit addresses of each line separately, each line’s header indoor unit is set separately. In that case, the CODE No.
Page 89 Be sure to disconnect the relay connectors between the [U1U2] and [U3U4] terminals on all the header outdoor units that will be connected to the central control. (Factory default: disconnected) CENTRAL INDOOR OUTDOOR CONTROL UNIT UNIT Turn on indoor units first, and then turn on outdoor units. About 1 minute after turning the power on, confirm that the 7-segment display on the interface P.C.
Page 90 Set the central control address. (For the setting of the central control address, refer to the installation manuals of the central control devices or “Manual address setup from the remote controller” in the next to the following page and after. Header unit interface P.C.
Page 91 Switch setting (setting example when controlling 2 or more refrigerant lines centrally) Outdoor units (setting manually) *The items in bold font must be set manually. Outdoor unit’s interface Header unit Follower unit Header unit Follower unit Header unit Factory default P.C.
Page 92 Manual address setup from the remote controller With indoor wiring work completed and outdoor wiring work not done—in cases where indoor unit addresses are decided in advance from the wired remote controller, or in cases where addresses are change after address setup. (Wiring example for 2 refrigerant lines) Arrange one indoor unit and one remote Line 1...
Page 93: Using The Remote Controller
NOTE (1) When setting the line address from the remote controller, do not use addresses 29 and 30. Addresses 29 and 30 cannot be set up on the outdoor unit. If they are incorrectly used, the code “E04” (indoor/outdoor communication circuit error) is output. (2) When manual address setup has been done from a remote controller, and central control over refrigerant lines is to be done, setup the header unit of each line as follows: •...
Page 94 To find an indoor unit’s position from its address When checking unit numbers controlled as a group CODE No. DATA SETTING UNIT No. R.C. TEMP. ON / OFF TIMER SET TIME FILTER Stop RESET TEST SET CL (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another.
Page 95 Push and hold the TIME and buttons at the same time for more than 4 seconds. At first, the line 1 and CODE No. (Address Change) are indicated on the LCD display. (Select an outdoor unit.) Push the (left side of the button) and buttons repeatedly to select a system SWING/FIX UNIT LOUVER...
Page 96 Push the TIME buttons repeatedly to change the value indicated in the SET DATA section to that you want. Push the button. Push the button (left side of the button) repeatedly to select another indoor UNIT No. UNIT LOUVER to change. Repeat steps to change the indoor unit addresses so as to make each of them unique.
Page 97 CODE No. DATA SETTING UNIT No. R.C. TEMP. ON / OFF TIMER SET TIME FILTER RESET TEST SET CL Finish 5, 7 Push to finish setting. Push the TIME buttons repeatedly to change the value of the indoor unit address in SET DATA.
Page 98 2) Turn on dip switch 2 of SW30 on the interface P.C. board of the header outdoor unit if the switch is OFF. (Leave it as it is if it has already been set to ON.) Central remote controller Header Header Header Follower unit...
Page 99 In the case of an increase in address-undefined indoor units (extension, etc.) To set up the indoor address of a unit with an address that is undefined due to the extension of indoor units or replacement of PC board, etc., follow the methods below. Method 1 Set up an address individually from a wired remote controller.
Page 100: Check After Address Setup When Central Control System Is Connected
8-4-4. Check after Address Setup when Central Control System Is Connected When the central control system is connected, check that the following setup has finished after address setup. Central remote controller To other refrigerant line Line address = 2 Line address = 1 Other refrigerant line Header unit (A) Header unit (A)
Page 101: Setting When Connecting Multiple Indoor Units To A Fs (Flow Selector) Unit
8-4-5. Setting when connecting multiple indoor units to a FS (Flow Selector) unit Cautions to connection of indoor unit How to set up CODE No. • When connecting the multiple indoor units to a single FS unit, it is necessary to set up the CODE No..
Page 102: How To Set Up The Cooling Only Indoor Unit
8-4-6. How to set up the cooling only indoor unit When setting the specific indoor unit to Cooling Only Select an indoor unit of which setting is to be unit without connecting to the flow selector unit, setup changed. to the indoor unit to become the Cooling Only unit is CODE No.
Page 103: Troubleshooting In Test Operation
8-5. Troubleshooting in Test Operation If there are phenomena such as the output of a check code or the remote controller is not accepted when poweredon after wiring work or during address setup operation, the following causes are considered. 8-5-1. A Check Code Is Displayed on the Remote Controller Check the code Header displayed on the...
Page 104: Operation From The Indoor Remote Controller Is Not Accepted, And A Check Code Is
8-5-2. Operation from the indoor remote controller is not accepted, and a check code is displayed on the 7-segment display of the interface PC board of the header unit. Indoor remote Header unit controller 7-segment Cause Countermeasures status display Line addresses and indoor addresses of all the connected Set up addresses.
Page 105: In Checking The Number Of Connected Outdoor Units And Connected Indoor Units After
8-5-4. In checking the number of connected outdoor units and connected indoor units after address setup, a lower number of connected units is displayed. (There are outdoor/indoor units that do not operate in a test operation.) Status Cause Countermeasures Miswiring of communication lines between outdoor units After modification of wiring, set up the addresses again and The number of or an unconnected wire ( Fig.
Page 106 Miswiring example Remote Header unit Figure controller 7-segment Miswiring example status display Header unit Header unit U3 U4 U5 U6 Fig. 1 E19-00 response U1 U2 U1 U2 U1 U2 U1 U2 Header unit Follower unit U1 U2 U5 U6 U1 U2 U5 U6 Fig.
Page 107: Test Operation Check
8-6. Test Operation Check 8-6-1. Fan Check START Check code appears When a check code has been Push the Start/Stop button on the remote controller. displayed on the remote controller, remove the cause of the error, referring to "Check code and check Check code position displayed on remote appears...
Page 108: Cooling/Heating Test Operation Check
8-6-2. Cooling/heating test operation check The cooling/heating test operation check can be performed on both the indoor remote control and the outdoor header unit interface PC board. (1) Test operation start/stop operation Test operation from the indoor remote control • Wired remote control: Refer to the items below in “Test operation” of the wired remote control. •...
Page 109 Wireless remote control (4-way Cassette type) Wireless remote control (Ceiling type) Procedure Operation content Procedure Operation content Turn off the air conditioner fs power. Turn on the air conditioner fs power. Remove the adjustment corner cap attached to This operation is not accepted for 5 minutes when the sensor section from the ceiling panel.
Page 110 (2) Test operation START Refer to "Test operation procedure" Test operation for one indoor unit of the indoor remote controller. The operation does not start for approximately 3 minutes after Operation starts powering-on or stopping operation. Note: After powering-on, it may require up to 10 minutes to start the operation due to the initial communications of the system.
Page 111 Note 1: Criteria for the difference between suction and discharge temperatures (1) Individual cooling operation After operating for a minimum of 30 minutes in “COOL” mode, if the ΔT dry bulb temperature difference between suction and discharge air of the indoor unit is 46.4°F (8°C) or more, it is normal. (2) Individual heating operation After operating for a minimum of 30 minutes in “HEAT”...
Page 112: Confirmation Of Test Operation
8-7. Confirmation of Test Operation 8-7-1. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit The following functions of the indoor unit can start or stop by the switches on the interface P .C. board of the header unit. No. Function Outline Setup/Release 7-segment display...
Page 113 (1) All cooling test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the cooling test operation mode, by using switches on the interface P.C. board of the header unit. <Operation procedure>...
Page 114 (2) All heating test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the heating test operation mode, by using switches on the interface P.C. board of the header unit. <Operation procedure>...
Page 115 (3) Single fan test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the fan test operation mode by using switches on the interface P.C. board of the header unit. <Operation procedure>...
Page 116 (4) Batch start/stop (ON/OFF) function This function is provided to start/stop collectively all the indoor units connected to the same system by using switches on the interface P.C. board of the header unit. <Operation procedure> Be sure to turn on power at the indoor side Power ON before power-ON of outdoor unit.
Page 117 (5) Individual start/stop (ON/OFF) individual test operation function This function is provided to start/stop (ON/OFF) individually each indoor unit connected to the same system by using switches on the interface P.C. board of the header unit. Set SW01 [16] and set SW02, SW03 to indoor address No. (1 to 40) to be started (Refer to the following table*) - only the setup indoor unit starts operation.
Page 118: Error Clearing Function
8-7-2. Error Clearing Function (1) Clearing from the main remote controller Error clearing in outdoor unit Error of the outdoor unit currently detected is cleared by the unit of one refrigerant circuit system to which the indoor units operated by the remote controller is connected. (Error of the indoor unit is not cleared.) For clearing errors, the service monitor function of the remote controller is used.
Page 119 (2) Clearing error by using switches on the interface board of the header unit Using the switches on the interface P.C. board of the header unit, this function is to clear the currently detected error for each refrigerant circuit system without resetting the power supply. Errors in both outdoor and indoor units are once cleared, and error detection is performed again.
Page 120: Remote Controller Distinction Function
8-7-3. Remote Controller Distinction Function This function is provided to distinguish the remote controller connected to the indoor unit from the outdoor unit for a refrigerant circuit system by using switches on the interface P.C. board of the header unit. <Distinction procedure>...
Page 121: Pulse Motor Valve (Pmv) Forced Open/Close Function In Indoor Unit
8-7-4. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit This function is provided to open or close forcedly PMV for 2 minutes in all the indoor units by the switch operation on the interface P.C. board of the header unit. This function is also used to open PMV fully when turning off the power and executing an operation.
Page 122: Solenoid Valve Forced Open/Close Function In Outdoor Unit
8-7-6. Solenoid Valve Forced Open/Close Function in Outdoor Unit This function is provided to forcedly open each solenoid valve mounted in the outdoor unit by the switch operation on the interface P.C. board in the outdoor unit. Use this function to check there is no refrigerant clogging with ON/OFF operation of the solenoid valve.
Page 123: Fan Operation Check In Outdoor Unit
8-7-7. Fan Operation Check in Outdoor Unit This function is provided to check the fan operation of the outdoor unit by using switches on the interface P.C. board in the outdoor unit. The frequency of the fan speed can be controlled by setting of the switches. Use this function to check the operation or abnormal sound in the fan system.
Page 124: Abnormal Outdoor Unit Discrimination Method By Fan Operating Function
8-7-8. Abnormal Outdoor Unit Discrimination Method By Fan Operating Function This function is provided to forcedly operate the fan of the outdoor unit in which an error occurred or the fan of thevnormal outdoor unit by the switch operation on the interface P.C. board in the header unit. To specify which one of the follower units connected to the system was faulty, use this function for the system stop due to a follower unit fault (Check code [E28]).
Page 125: Manual Adjustment Function Of Outside Temperature (To) Sensor
8-7-9. Manual Adjustment Function of Outside Temperature (TO) Sensor This function is provided to fix TO sensor value manually by the switch operation on the interface P.C. board in the outdoor unit. When the unit stops abnormally due to TO sensor failure, etc, an emergent operation is available by setting up the value manually to position near the current outside temperature.
Page 126 <Service support function list> SW01 SW02 SW03 7-segment display [A] Function contents [J . C] Refrigerant circuit and control communication line check function (Cooling operation) [J . H] Refrigerant circuit and control communication line check function (Heating operation) [P . ] Indoor PMV forced full open function [A .
Page 127: Monitor Function Of Remote Controller Switch
8-7-10. Monitor Function of Remote Controller Switch When using a remote controller with the model name RBC-AMT32UL, the following monitor functions can be used. Calling of display screen <Content> The sensor temperature or operation status of the remote controller, indoor unit, or the outdoor unit can be known by calling up the service monitor mode from the remote controller.
Page 128 CODE No. Data name Display format Unit Remote controller display example Room temperature (During control) ×1 ˚C [0027] = 27˚C Room temperature (Remote controller) ×1 ˚C Indoor suction temperature (TA) ×1 ˚F Indoor coil temperature (TCJ) ×1 ˚F Indoor coil temperature (TC2) ×1 ˚F [0080] = 80˚F...
Page 129: Troubleshooting
9. TROUBLESHOOTING 9-1. Overview (1) Before engaging in troubleshooting (a) Applicable models All Super Heat Recovery Multi (SHRM-i) models. ∗ (Indoor units: MMO-APOOO, Outdoor units: MMY-MAPOOO4F (b) Tools and measuring devices required • Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. •...
Page 130: Troubleshooting Method
9-2. Troubleshooting Method The remote controllers (main remote controller and central control remote controller) and the interface P.C. board of an outdoor unit are provided with an LCD display (remote controller) or a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the fault site/faulty part may be identified in the event of a fault by following the method described below.
Page 131 (Error detected by main remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Main Typical fault site Description of error remote Operation Timer Ready Sub-code Flash controller No master remote controller, Signals cannot be received from indoor unit; —...
Page 132 List of Check Codes (Outdoor Unit) (Errors detected by SHRM-i outdoor interface - typical examples) If “HELLO” is displayed on the outdoor 7-segment for 1 minute or more, turn off the power supply once and then turn on the power supply again after passage of IPDU: Intelligent Power Drive Unit (Inverter P.C.
Page 133 Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block central control Typical fault site Description of error or main remote Operation Timer Ready Sub-code Flash controller display 01: TS1 Outdoor suction temperature Outdoor suction temperature sensor (TS1, TS2) has 02: TS2 sensor (TS1, TS2) error been open/short-circuited.
Page 134 Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block central control Typical fault site Description of error or main remote Operation Timer Ready Sub-code Flash controller display Outdoor liquid backflow detection State of refrigerant cycle circuit indicates liquid —...
Page 135: Troubleshooting Based On Information Displayed On Remote Controller
9-3. Troubleshooting Based on Information Displayed on Remote Controller Using main remote controller (RBC-AMT32UL) (1) Checking and testing When a fault occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation.
Page 136 Using indoor unit indicators (receiving unit light block) (wireless type) To identify the check code, check the 7-segment display on the header unit. To check for check codes not displayed on the 7-segment display, consult the “List of Check Codes (Indoor Unit)” in “9-2. Troubleshooting Method”.
Page 137 Light block Check code Cause of fault Operation Timer Ready Heat exchanger temperature sensor (TCJ) error Heat exchanger temperature sensor (TC2) error Heat exchanger temperature sensor (TC1) error Indoor unit temperature sensor errors Ambient temperature sensor (TA) error Alternate blinking Discharge temperature sensor (TD1) error Operation Timer Ready...
Page 138 Other (indications not involving check code) Light block Check code Cause of fault Operation Timer Ready — Test run in progress Synchronized blinking Operation Timer Ready Setting incompatibility — (automatic cooling/heating setting for model incapable of it and heating setting for cooling-only model) Alternate blinking –...
Page 139: Check Codes Displayed On Remote Controller And Smms-I Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked
9-4. Check Codes Displayed on Remote Controller and SMMS-i Outdoor Unit (7- Segment Display on I/F Board) and Locations to Be Checked For other types of outdoor units, refer to their own service manuals. Check code Location Error detection Main Outdoor 7-segment display Description System status...
Page 140 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Indoor unit not All stop Indoor unit cannot be • Check connection of found during detected after indoor indoor-outdoor communication automatic automatic address setting is...
Page 141 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Detected Outdoor All stop Outdoor header unit receives • Check check code displayed outdoor unit follower unit error code from outdoor on outdoor follower unit.
Page 142 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code TO sensor error All stop Sensor resistance is infinity • Check connection of TO or zero (open/short circuit). sensor connector.
Page 143 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Outdoor All stop *1 Outdoor P.C. board • Check power supply voltage. EEPROM error (I/F) does not • Check power supply noise. —...
Page 144 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Detected Low oil level All stop Operating compressor detects <All outdoor units in outdoor unit No. protection continuous state of low oil level corresponding line to be Display of for about 2 hours.
Page 145 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code 01: TK1 oil Oil level All stop No temperature • Check for disconnection of TK1 sensor. circuit error detection change is detected •...
Page 146 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Indoor unit Outdoor units Stop of In case of different outdoor unit. • Check outdoor unit model. model corresponding —...
Page 147 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Extended IC error Continued There is part failure Check outdoor P.C. board (I/F). — — operation in P.C. board (I/F). Indoor unit Indoor fan motor Stop of...
Page 148 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Detection of open All stop • Open phase is detected when • Check for defect in outdoor phase/phase power is turned on.
Page 149 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code 01: TS condition All stop Protective shutdown due to • Check for insufficiency in leakdetection sustained suction refrigerant quantity. (TS1 condition) temperature at or above •...
Page 150 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Discharge All stop Discharge temperature (TD3) • Check outdoor service valves temperature TD3 exceeds 239˚F (115˚C). (discharge gas side, suction error gas side, liquid side) to confirm full opening.
Page 151 Check code Location Error detection Main Outdoor 7-segment display Description System Check items (locations) condition(s) remote detection Check Sub-code status controller code Activation of All stop Pd sensor detects pressure • Check for defect in Pd pressure sensor. high-pressure equal to or greater than •...
Page 152 Check code Location Error detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code 01: Compressor IPDU G-TR short-circuit All stop Overcurrent is momentarily • Check connector connection 1 side protection error detected during startup of and wiring on A3-IPDU P.C.
Page 153 Points to Note When Servicing Compressor (1) When checking the outputs of inverters, remove the wiring from all the compressors. How to Check Inverter Output (1) Turn off the power supply. (2) Remove compressor leads from the IPDU P.C. board (A3-IPDU). (Be sure to remove all the leads.) (3) Turn on the power supply and start cooling or heating operation.
Page 154: Diagnosis Procedure For Each Check Code
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Page 184: 7-Segment Display Function
9-6. 7-Segment Display Function 7-segment display on outdoor unit (interface P.C. board) The interface control P.C. board features a 7-segment LED display designed to check operational status. Display items can be changed by changing the combination of the number settings of rotary switches provided on the P.C.
Page 185 (1) Display of System Information (Displayed on Header Outdoor Unit Only) SW01 SW02 SW03 Display detail Unused System capacity [..6. 0 t ]~[... 2 0. 0 t ] 6 to 20 Ton No. of outdoor units [...1]~[...2]:1 to 2 B [...P] No.
Page 186 (2) Display of Outdoor Unit Information (Displayed on Each Outdoor Unit) SW01 SW02 SW03 Display detail Error data Outdoor unit No.: [U1] to [U2] B Check code (only latest one displayed) If there is no check code, [– – –] is displayed. ∗...
Page 187 (3) Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit) SW01 SW02 SW03 Display detail Pd pressure data Pd pressure (psi) is displayed in decimal format. ∗ ∗ ∗ P d. ∗ ∗ ∗ Ps pressure data Ps pressure (psi) is displayed in decimal format. P s.
Page 188 (4) Display of Outdoor Cycle Data (Displayed at Header Unit) * This method is used when displaying follower unit information on the 7-segment display of the header unit. SW01 SW02 SW03 Display detail Error data [U.2] B Check code is displayed (latest one only). If there is no check code: [–...
Page 189 (6) Display of Outdoor EEPROM Writing Error Code (Displayed on Header Unit Only) * The latest error code written in the EEPROM of each outdoor unit is displayed. (This function is used to check the error code after the resetting of the power supply.) To display the error code, push SW04 and hold for at least 5 seconds after setting SW01 to 03 as shown in the table below.
Page 190: Oil Level Judgment Display
9-7. Oil Level Judgment Display The current compressor oil level judgment results can be accessed by setting the switches provided on the interface P.C. board of an outdoor unit. Perform the checks in accordance with the procedure described below. Operation Procedure (1) Start the operation.
Page 191 SHRM-i Outdoor Interface P.C. Board Function Setting Exchange Table Switch/Function Setting Exchange Initial setting Part type Exchange contents at shipment bit 1 Compressor 1 backup OFF: Normal, ON: Backup when compressor 1 was in trouble bit 2 Compressor 2 backup OFF: Normal, ON: Backup when compressor 2 SW06 DIP SW 4 bit...
Page 192 Switching of Jumper Wire/Function Setup Function switching setup × : With jumper, : Without jumper (Cut) Initial setting jumper Part type Exchange contents at shipment Optional function Indoor unit at not selected side is kept with waiting status. Operation mode selection The mode is changed a mode which selected the operation mode of the ×...
Page 193 Interface Board Switches and jumper wire positions to be used in the Function setup switching table CN30 CN31 CN32 SW30 Interface P.C.board SW06 SW07 SW09 SW10 SW11 SW12 SW13 SW14 SW16 SW17 – 193 –...
Page 194: Leakage/Clogging Of Refrigerating Cycle Circuit
9-8. Leakage/Clogging of Refrigerating Cycle Circuit List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part ∗ (MMY-MAP0724FT Clogging Site of fault Part Check target unit Detected fault and check code Symptom (see next page) Outdoor PMV1, 2, 4 Corresponding unit Activation of high-pressure protection...
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Page 196 List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part ∗ (MMY-MAP0964FT , 1204FT) Clogging Site of fault Part Check target unit Detected fault and check code Symptom (see next page) Outdoor PMV1, 2, 4 Corresponding unit Activation of high-pressure protection Rise of abnormal pressure...
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Page 198: Flow Selector Unit (Fs Unit)
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Page 200 <REFERENCE> An Example of Refrigerant Flow in FS Unit When Trouble Occurred Indoor unit Cool/Heat FS unit – 200 –...
Page 201: Troubleshooting When Multiple Indoor Units Are Connected To Cool/Heat Fs Unit
9-8-2. Troubleshooting when Multiple Indoor Units are Connected to Cool/Heat FS Unit When multiple indoor units are connected to a Cool/Heat FS unit, it is necessary to set the Code No. [0E]. If this setting is forgotten, normal operation is impossible. [Case that Code No.
Page 202: Sensor Characteristics
9-9. Sensor Characteristics Outdoor Unit Temperature sensor characteristics Temperature [˚F (˚C)] Resistance [kΩ] Outdoor TS1, TS2 and TL sonsor -4 (-20) 108.1 5 (-15) 80.0 14 (-10) 59.8 23 (-5) 45.3 32 (0) 34.6 41 (5) 26.6 50 (10) 20.6 Resistance Resistance 59 (15)
Page 203 Outdoor Unit Pressure sensor characteristics • Input/output wiring summary High pressure side (Pd) Low pressure side (Ps) Pin No. Input/output name Lead wire color Input/output name Lead wire color OUTPUT White — — — — OUTPUT White Black Black • Output voltage vs. pressure Input/output name Input/output name 0.5~4.3V...
Page 204 Temperature [˚F (˚C)] Resistance [kΩ] Indoor TC1 sensor -4 (-20) 98.3 5 (-15) 73.7 14 (-10) 55.8 23 (-5) 42.6 32 (0) 32.8 41 (5) 25.5 Resistance Resistance 50 (10) 20.0 [ kΩ] [ kΩ] 59 (15) 15.7 ( 50˚F (10˚C) ( 50˚F (10˚C) 68 (20) 12.5...
Page 205: Pressure Sensor Output Check
9-10.Pressure sensor output check Outdoor Unit Pd sensor characteristics 0 to 639 psi (4.41 MPa) (0.5 to 5 V output for 0 to 639 psi (4.41 MPa)) Voltage readings across pins 2 and 3 of CN501 on indoor unit main P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT...
Page 206 Outdoor Unit Ps sensor characteristics 0 to 215 psi (1.47 MPa) (0.5 to 5 V output for 0 to 215 psi (1.47 MPa)) Voltage readings across pins 2 and 3 of CN500 on indoor unit main P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT...
Page 207: Backup Operation (Emergency Operation)
10. BACKUP OPERATION (EMERGENCY OPERATION) This product offers backup modes of operation to tide over certain emergency situations. If a fault occurs in one of the compressors, it is possible to operate the system on an emergency basis by operating only the remaining compressor(s), (compressor backup operation).
Page 208: Compressor Backup Operation Setting
10-2.Compressor Backup Operation Setting <Outline> If a fault occurs to one of the compressors installed in outdoor unit, follow the procedure described below to back up the faulty compressor by using the remaining, normal compressor(s). <Work Procedure> (1) Turn off the power supply to all the outdoor units connected to the system. (2) Set the DIP switches of SW06, provided on the interface P.C.
Page 209: Backup Setup For Outdoor Unit
10-3.Backup Setup for Outdoor Unit Outline In this model, setup of the backup operation is available in either the header unit or the follower unit in a situation where the outdoor units are defective. In a system in which two or more outdoor units are connected, carry out the backup operation on the outdoor unit if the error modes described below occur.
Page 210: Outdoor Unit Refrigerant Recovery Method
11. OUTDOOR UNIT REFRIGERANT RECOVERY METHOD 11-1. Refrigerant Recovery from Failed Outdoor Unit (Pump-Down) This product supports refrigerant pump-down, a function which allows refrigerant to be recovered from an outdoor unit in need of repair using a normal outdoor unit in a system featuring multiple outdoor units. 11-1-1.
Page 211 (6) Approx. 10 minutes after the system starts up, fully close the gas pipe service valve of the failed outdoor unit. (7) Push SW04 of the failed outdoor unit to have pressure data psi (MPa) displayed. (The display switches each time SW04 is pushed.) Display Example [rd] […11] [Pd] [1.20]...
Page 212 [Setup of the power cannot be turned on the failed outdoor unit] If the power cannot be turned on the failed outdoor unit, the solenoid valves and PMVs of the unit cannot be turned on, so that it reduces the amount of recovered refrigerant compared to a standard pump-down operation.
Page 213 [Setup of failed outdoor unit] (10) When the manifold gauge pressure of the failed outdoor unit falls below 14.5 psi (0.10 MPa), fully close the balance pipe packed valve, and push SW05 on the interface P.C. board to finish the test cooling operation.
Page 214: How To Operate System While Failed Outdoor Unit Being Repaired
11-2. How to Operate System While Failed Outdoor Unit Being Repaired <Outline> After refrigerant is recovered from the failed outdoor unit through a pump-down operation, the overall amount of refrigerant held by the system becomes excessive, and this makes it impossible to operate the remaining outdoor units even though they are not faulty.
Page 215: Work Procedure After Repair
11-3. Work procedure after Repair When vacuuming in the repaired outdoor unit, follow the procedure described below. <Work procedure> (1) Fully open PMV1 and 2 and PMV4 in accordance with the table below. Note: PMV full-opening operation via short-circuiting of the CN30 pins is automatically undone after 2 minutes, causing the valves to fully close.
Page 216: Replacing Compressors
12. REPLACING COMPRESSORS 12-1. Compressor Replacement Procedure (Outline) WARNING In situations such as indoor unit relocation and START repairs, it is not possible to recover all the refrigerant held by the system in the outdoor units. It could cause a serious accident, such as blow out or Is the outdoor unit the only one in the system? injury.
Page 217: Replacement Of Compressors
12-2. Replacement of Compressors <Checking color of oil in faulty compressor> • Lay the faulty compressor down, draw a small amount of oil via the oil equalization pipe, and check its color against color samples. • Determine the number of compressors to be replaced according to the color checking result. ASTM grade: Below 4 →...
Page 218 ∗ [When replacing normal as well as faulty compressor] - applicable to MMY-MAP072 <Dismantling normal compressor> • Dismantle the normal compressor in the same way as the faulty compressor. Note: • Be sure to insulate the removed compressor leads using insulation tape, etc. WARNING When detaching a pipe by heating with a burner a welded joint, take care as any oil left in the piping may burn in a momentary flash of fire when the weld filler metal melts.
Page 219 ∗ [When replacing normal as well as faulty compressors] - applicable to MMY-MAP096 ∗ MAP120 <Dismantling normal compressors> • Dismantle the normal compressors in the same way as the faulty compressor. Note: • Be sure to insulate the removed compressor leads using insulation tape, etc. WARNING When detaching a pipe by heating with a burner a welded joint, take care as any oil left in the piping may burn in a momentary flash of fire when the weld filler metal melts.
Page 220 <Installing compressor> • Install a compressor by following the dismantling procedure in reverse. WARNING The dismantling process may have loosened compressor leads and faston connectors. Prior to installation, therefore, tighten them a little with a pair of pliers, and verify that they are tight after reconnection. Notes: •...
Page 221: Check Procedure To Search Cause Of Compressor Oil Shortage
12-3. Check Procedure to Search Cause of Compressor Oil Shortage Are the balance pipes of all outdoor units connected to the Open the balance pipe valves fully. same refrigerant line fully open? Are there Correct the miswiring or connection. any miswiring or incorrect TK1: CN531 TK2: CN532 connection of TK1, TK2, TK3, TK4 and TK3: CN533 TK4: CN534...
Page 222 ∗ ∗ ∗ <MMY-MAP072 , MAP096 and MAP120 > Check items and procedures to follow when checking oil circuit with compressor(s) disconnected Check item Location Procedure 1) Pressure nitrogen from check joint of the liquid pipe under condition that PMV1, 2 and 4 are fully closed, confirm the pressure using high-pressure check joint.
Page 223: Outdoor Unit Parts Replacement Methods
13. OUTDOOR UNIT PARTS REPLACEMENT METHODS No. Part to be replaced Work procedure Remarks Cabinet WARNING Discharge cabinet Screws (4 corners) Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1.
Page 224 No. Part to be replaced Work procedure Remarks Cabinet 8) Remove the hook of the protective plate (side) from 8) Remove the hook of (continued) the hole of the middle partition plate. the protective plate (2 locations) (side) from the hole of the middle partition plate (2 locations) 8) Protective plate (side)
Page 225 No. Part to be replaced Work procedure Remarks Propeller fan WARNING Fan motor 2) Screws (4 corners) Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Stop the air conditioner operation, and turn off the Discharge cabinet side cover circuit breaker.
Page 226 No. Part to be replaced Work procedure Remarks Propeller fan 2. CAUTION for replacement or attachment D-cut surface of fan Fan motor 1) Insert the propeller fan while aligning the D-cut motor shaft (Continude) surface of the fan motor shaft with the arrow mark ) on the fan.
Page 227 No. Part to be replaced Work procedure Remarks Heat exchanger WARNING 3) Discharge cabinet anchor plate 2) Motor base Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. Before the work, be sure to recover the refrigerant of outdoor unit into cylinders or another unit connected to the same system.
Page 228 No. Part to be replaced Work procedure Remarks Inverter assembly WARNING 4) Screw (with arrow mark) Wear a pair of gloves. Removable design Otherwise, you will risk an injury involving a replacement part or some other object. 4) Screw (with arrow mark) 1.
Page 229 No. Part to be replaced Work procedure Remarks Inverter assembly 2. Attachment (continued) Before pushing lower part in, pull Carry out installation by following the dismantling leads out through hole. procedure in reverse (8) → 1)). Before pushing the lower part in, pull the reactor leads out.
Page 230 No. Part to be replaced Work procedure Remarks Assembling inverter - WARNING Replacing boards / 1) I/F board (Control board) electric components (208/230 V FT9UL) 3) IPDU board for fan 1) Noise filtering board Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object.
Page 231 No. Part to be replaced Work procedure Remarks Reactor assembly • 096 type, 120 type (208/230 V FT9UL) WARNING 3) Screw Fixing claw (slide stopper to right) Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1.
Page 232 No. Part to be replaced Work procedure Remarks Inverter assembly - Replacing circuit WARNING boards and Transformer relay board Interface board (control board) electrical Wear gloves. FAN IPDU board Noise filter board components Failure to wear gloves creates the risk (460 V FT6UL) of personal injury by part replacement and other objects.
Page 233 No. Part to be replaced Work procedure Remarks Reactor assembly • 096type, 120type WARNING (460V FT6UL) 3) Screw Claw (Slide to the right.) Wear gloves. Failure to wear gloves creates the risk of personal injury by part replacement and other objects. 1) Stop operation and turn off the breaker switch.
Page 234 No. Part to be replaced Work procedure Remarks 2-way valve coils Pressure sensors Rear locations SV3B SV3A 072 type SV14 SV3C Liquid tank SV3E SV3D SV11 Oil separator SV41 SV42 Accumulator PS sensor PD sensor Front 096 type SV14 SV3F SV3E SV3D SV3B...
Page 235 No. Part to be replaced Work procedure Remarks Temperature Product Front View sensors - locations and TD1 sensor TD2 sensor identification colors (yellow) (red) 072 type TE2 sensor (red) Accumulator Compressor 1 Compressor 2 Front side Product Rear View TK4 sensor (white) TS1 sensor (gray) TK1 sensor (black) TS2 sensor (black)
Page 236 No. Part to be replaced Work procedure Remarks Temperature Product Front View sensors - locations and TD1 sensor TD2 sensor identification colors TD3 sensor (black) (yellow) (red) (continued) 096 type 120 type TE2 sensor (red) Accumulator Compressor 2 Compressor 3 Compressor 1 Front side Product Rear View...
Page 237 No. Part to be replaced Work procedure Remarks Pipe fixing rubber This product employs pipe fixing rubber (eyeglass type), combined with a SUS band, to restrain pipes - detachment/ subject to vibration to improve reliability. attachment <Use of SUS band - total 5 locations> 072 type Oil header ⇔...
Page 238 No. Part to be replaced Work procedure Remarks Pipe fixing rubber WARNING - detachment/ attachment (common) Wear a pair of gloves. Otherwise, you will risk an injury involving a replacement part or some other object. 1. Detachment 1) Hold the pipe fixing rubber in such a manner that your fingers and thumb are in contact with the two Squeeze rubber to create small gap.
Page 239 No. Part to be replaced Work procedure Remarks 4-way valve WARNING - detachment/ attachment 072 type Wear a pair of gloves. Otherwise, you will risk an injury involving a 4) Brazed point replacement part or some other object. Before starting the work, be sure to recover the refrigerant of outdoor unit by removing it with a refrigerant recovery device.
Page 240 No. Part to be replaced Work procedure Remarks 4-way valve WARNING - detachment/ attachment (continued) Wear a pair of gloves. 096 type Otherwise, you will risk an injury involving 120 type 4) Brazed point a replacement part or some other object. Before starting the work, be sure to recover the refrigerant of outdoor unit by removing it with a refrigerant recovery device.
Page 241 No. Part to be replaced Work procedure Remarks Transformer WARNING (460V FT6UL) Screw tightening locations for housing • Wear gloves. 2) M5 screws Failure to wear gloves creates the risk of personal injury by part replacement and other objects. • Do not attempt to modify the transformer. Anchor plate 1.
Page 242 No. Part to be replaced Work procedure Remarks Transformer (460V FT6UL) 10) Remove the transformer housing back screws and Screw tightening locations for transformer housing back then remove the housing. (M4 x 0.2” (6mm), 4 pcs) Right side Left side Transformer housing 10) Screws...
Page 243: Board Exchange Procedures
14-1.List of service P.C. boards Parts code Description Applicable model P.C. board type code Product code 4316V519 Interface P.C. board MCC-1606 ASM-PCB (I/F) MMY-MAP0724FT9UL Inverter P.C. board for 4316V451 MCC-1595 ASM-PCB (A3 IPDU) MMY-MAP0964FT9UL compressor MMY-MAP1204FT9UL 4316V520 Inverter P.C. board for fan...
Page 244 MMY-MAP0724FT6UL MMY-MAP0964FT6UL MMY-MAP1204FT6UL Interface P.C. board [Outdoor control P.C. board] Interface P.C. board Relay terminal block (MCC-1606) [Outdoor control P.C. board] Inverter P.C. board for fan for reactor [FAN IPDU] (MCC-1606) Noise Filter Noise Filter (MCC-1610) P.C. board Inverter P.C. board for fan Power supply P.C.
Page 245: Interface Board Replacement Procedure
14-3. Interface board replacement procedure Parts code Description Applicable model P.C. board type code Product code MMY-MAP0724FT9UL MMY-MAP0964FT9UL MMY-MAP1204FT9UL 4316V519 Interface P.C. Board MCC-1606 ASM-PCB(I/F) MMY-MAP0724FT6UL MMY-MAP0964FT6UL MMY-MAP1204FT6UL This Interface board is commonly installed in different models before shipment. When the board assembly is to be replaced, check the displayed inspection contents below and replace the board in accordance with the model, following the below procedure.
Page 246: Comp-Ipdu P.c. Board (Mcc-1595) Replacement Procedure
(4) Remove the Compressor IPDU from the four spacers ( ) by pinching the top of the spacers by round-nose pliers. Compressor IPDU Black Wire Ex. MMY-MAP0724FT9UL White Wire Pinch this part by round-nose pliers for Screw removing the PCB.
Page 247 (6) Set the dip switch (SW800) setting of the service board to match the switch setting from the original PCB. Set the dip switch (SW800) depending on the position of the IPDU within the electrical box, as shown in the following diagram. Ex. MMY-MAP0724FT9UL Ex. MMY-MAP1204FT9UL Dip Switch...
Page 248: Comp-Ipdu P.c. Board (Mcc-1595) Replacement Procedure
14-5. Comp-IPDU P.C. Board (MCC-1596) replacement procedure Parts code Description Applicable model P.C. board type code Product code MMY-MAP0724FT6UL Inverter P.C. board for ASM-PCB 4316V489 MCC-1596 MMY-MAP0964FT6UL Compressor (A3I PDU) MMY-MAP1204FT6UL This board is commonly installed in different models before shipment. Set the dip switch (SW800) setting of the service board to the switch setting before replacement.
Page 249 (7) Set the dip switch (SW800) setting of the service board to match the switch setting from the original PCB. Set the dip switch (SW800) depending on the position of the IPDU within the electrical box, as shown in the following diagram.
Page 250: Fan Ipdu P.c. Board (Mcc-1610) Replacement Procedure
14-6. Fan IPDU P.C. board (MCC-1610) replacement procedure Parts code Description Applicable model P.C. board type code Product code MMY-MAP0724FT9UL MMY-MAP0964FT9UL MMY-MAP1204FT9UL 4316V520 Inverter P.C. Board for fan MCC-1610 ASM-PCB(FAN IPDU) MMY-MAP0724FT6UL MMY-MAP0964FT6UL MMY-MAP1204FT6UL Replacement steps: (1) Turn off the power supply of the outdoor unit and allow at least one minute for the capacitor to discharge.
Page 251: Noise Filter P.c. Board (Mcc-1608 A, B) Replacement Procedure
14-7. Noise Filter P.C. Board (MCC-1608 A, B) Replacement Procedure Parts code Description Applicable model P.C. board type code Product code MMY-MAP0724FT9UL 4316V453 Noise filter P.C. board MMY-MAP0964FT9UL MCC-1608-A, B ASM-PCB (N/F) MMY-MAP1204FT9UL <1. Preparation (model selection)> All P.C. boards of this type leave the factory with default settings that are common to all applicable models.
Page 252 (3) Disconnect all the connectors and fast-on terminals used to connect wiring to the noise filter P.C. board. • The line filter ( ) and its leads, both connected to the screw-on terminals ( ) of the noise filter P.C. board (A) will be removed in step 6.
Page 253 (7) Install the service P.C. boards (A) and (B) in the outdoor unit controller. (Make sure that they are firmly secured to the card edge spacers ( (8) Securely connect the service P.C. boards to the chassis using the earthing screws ( ), ( ) removed in step 4.
Page 254: Noise Filter P.c. Board (Mcc-1625 A, B, C)
14-8. Noise Filter P.C. Board (MCC-1625 A, B, C) Parts code Description Applicable model P.C. board type code Product code MMY-MAP0724FT6UL 4316V497 Noise filter P.C. board MMY-MAP0964FT6UL MCC-1625-A, B, C ASM-PCB (N/F) MMY-MAP1204FT6UL Replacement Procedure <1. Preparation (model selection)> All P.C. boards of this type leave the factory with default settings that are common to all applicable models. When replacing a P.C.
Page 255 (3) Disconnect all the connectors and fast-on terminals used to connect wiring to the noise filter P.C. board. • The line filter ( ) and its leads, both connected to the screw-on terminals ( ) of the noise filter P.C. board (A) will be removed in step 6.
Page 256 (7) Install the service P.C. boards (A), (B) and (C) in the outdoor unit controller. (Make sure that they are firmly secured to the card edge spacers ( (8) Securely connect the service P.C. boards to the chassis using the earthing screws ( ), ( ) removed in step 4.
Page 257: Exploded Diagram / Parts List
15. EXPLODED DIAGRAM / PARTS LIST Outdoor unit 15-1. MMY-MAP0724FT9UL – 257 –...
Page 258 15-1. MMY-MAP0724FT9UL – 258 –...
Page 259 15-1. Refrigeration Circuit Diagram MMY-MAP0724FT9UL MOTOR FAN PULSE MOTOR CONDENSER VALVE RIGHT SIDE (TO) PULSE MOTOR VALVE 2 PULSE SUB CONDENSER RIGHT SIDE MOTOR VALVE 1 CONDENSER LEFT SIDE (TE1) SUB CONDENSER LEFT SIDE (TE2) (SV11) VALVE (SV5) (TS1) PRESSURE...
Page 260 15-1. MMY-MAP0724FT9UL Ref.No. Part No. Description MMY-MAP0724FT9UL 37547751 VALVE, CHECKED 43F47401 BONNET, 3/8 IN 43F47491 TUBE, CAPILLARY, I.D 1.5 43147195 BONNET, 1/2 IN 43194029 BONNET, 5/8 IN 43100471 CABINET, AIR OUTLET 43100472 CABINET, AIR INLET, FRONT 43100473 CABINET, AIR INLET, BACK...
Page 261 15-1. MMY-MAP0724FT9UL Ref.No. Part No. Description MMY-MAP0724FT9UL 4314N049 VALVE, 4WAY 43146711 VALVE, 2WAY 4314Q053 STRAINER 4314Q054 STRAINER 4314Q055 STRAINER 4314Q056 STRAINER 4314Q057 STRAINER 4314Q093 STRAINER 43151308 SWITCH, PRESSURE ACB-4UB105W 43157276 HEATER, CASE, 29W 240V 43157290 HEATER, CASE, 55W 240V 43163063...
Page 262 15-1. Inverter Assembly MMY-MAP0724FT9UL – 262 –...
Page 263 15-1. MMY-MAP0724FT9UL Ref.No. Part No. Description MMY-MAP0724FT9UL 43050425 SENSOR ASSY, SERVICE 43F63248 SUPPORTER, ASSY 43150315 SENSOR, TD (F6) TERMINAL BLOCK, 3P, 100A 43160623 (Power supply terminal block) REACTOR 43158228 (Reactor (For fan) ) REACTOR 43158225 (Reactor (For comp.) ) TERMINAL BLOCK, 3P, 60A...
Page 264: Mmy-Map0964Ft9Ul Mmy-Map1204Ft9Ul
15-2. MMY-MAP0964FT9UL MMY-MAP1204FT9UL – 264 –...
Page 265 15-2. MMY-MAP0964FT9UL MMY-MAP1204FT9UL – 265 –...
Page 266 15-2. Refrigeration Circuit Diagram MMY-MAP0964FT9UL MMY-MAP1204FT9UL MOTOR FAN PULSE CONDENSER MOTOR RIGHT SIDE (TO) PULSE VALVE MOTOR VALVE 2 SUB CONDENSER RIGHT SIDE PULSE MOTOR VALVE 1 CONDENSER LEFT SIDE (TE1) SUB CONDENSER LEFT SIDE (TE2) VALVE (SV11) 4WAY (SV5) (TS1) PRESSURE SENSOR...
Page 267 15-2. MMY-MAP0964FT9UL MMY-MAP1204FT9UL MMY-MAP Ref.No. Part No. Description 0964FT9UL 1204FT9UL 37547751 VALVE, CHECKED 43F47401 BONNET, 3/8 IN 43F47491 TUBE, CAPILLARY, I.D 1.5 43147195 BONNET, 1/2 IN 43100471 CABINET, AIR OUTLET 43100474 CABINET, AIR INLET, FRONT CABINET, AIR INLET, BACK 43100475 4310A061 CABINET, SIDE, UP 4310A011...
Page 268 15-2. MMY-MAP0964FT9UL MMY-MAP1204FT9UL MMY-MAP Ref.No. Part No. Description 0964FT9UL 1204FT9UL 4314N073 VALVE, PACKED, 12.7 4314N075 VALVE, CHECK 43146739 COIL, SOLENOID, STF-01AQ1939UA1 43146676 JOINT,CHECK 4314N049 VALVE, 4WAY 43146711 VALVE, 2WAY 4314Q052 STRAINER STRAINER 4314Q054 4314Q055 STRAINER 4314Q056 STRAINER 4314Q094 STRAINER 4314Q095 STRAINER 4314Q096 STRAINER...
Page 269 15-2. Inverter Assembly MMY-MAP0964FT9UL MMY-MAP1204FT9UL – 269 –...
Page 270 15-2. MMY-MAP0964FT9UL MMY-MAP1204FT9UL MMY-MAP Ref.No. Part No. Description 0964FT9UL 1204FT9UL 43050425 SENSOR ASSY, SERVICE 43F63248 SUPPORTER, ASSY 43150315 SENSOR,TD (F6) TERMINAL BLOCK, 3P, 100A 43160623 (Power supply terminal block) REACTOR 43158228 (Reactor (For fan) ) TERMINAL, 6P 43160617 (Relay terminal block for reactor) TERMINAL BLOCK, 3P, 60A 43160609 (Relay terminal block for power supply)
Page 271: Mmy-Map0724Ft6Ul
15-3. MMY-MAP0724FT6UL – 271 –...
Page 272 15-3. MMY-MAP0724FT6UL – 272 –...
Page 273 15-3. Refrigeration Circuit Diagram MMY-MAP0724FT6UL MOTOR FAN PULSE MOTOR CONDENSER VALVE (TO) RIGHT SIDE PULSE MOTOR VALVE 2 PULSE SUB CONDENSER RIGHT SIDE MOTOR VALVE 1 CONDENSER LEFT SIDE (TE1) SUB CONDENSER LEFT SIDE (TE2) SV (SV11) VALVE (SV5) (TS1) PRESSURE SENSOR (TL)
Page 274 15-3. MMY-MAP0724FT6UL Ref.No. Part No. Description MMY-MAP0724FT6UL 37547751 VALVE, CHECKED 43F47401 BONNET, 3/8 IN 43F47491 TUBE, CAPILLARY, I.D 1.5 43147195 BONNET, 1/2 IN 43194029 BONNET, 5/8 IN 43100471 CABINET, AIR OUTLET 43100472 CABINET, AIR INLET, FRONT 43100473 CABINET, AIR INLET, BACK 4310A011 PANEL 43100481...
Page 275 15-3. MMY-MAP0724FT6UL Ref.No. Part No. Description MMY-MAP0724FT6UL 4314N049 VALVE, 4WAY 43146711 VALVE, 2WAY 4314Q053 STRAINER 4314Q054 STRAINER 4314Q055 STRAINER 4314Q056 STRAINER STRAINER 4314Q057 4314Q093 STRAINER 43151308 SWITCH, PRESSURE ACB-4UB105W 43157276 HEATER, CASE, 29W 240V 43157290 HEATER, CASE, 55W 240V 43163063 HOLDER, SENSOR, TO 43197175 NUT, FLANGE...
Page 276 15-3. Inverter Assembly MMY-MAP0724FT6UL – 276 –...
Page 277 15-3. MMY-MAP0724FT6UL Ref.No. Part No. Description MMY-MAP0724FT6UL 43050425 SENSOR ASSY, SERVICE 43F63248 SUPPORTER, ASSY 43150315 SENSOR, TD (F6) TERMINAL BLOCK, 3P, 100A 43160623 (Power supply terminal block) REACTOR 43158228 (Reactor (For fan) ) 43152520 CONTACTOR, MAGNETIC TERMINAL, 6P 43160583 (Communication terminal block) 43F69524 SUPORT, SPACER 43182011...
Page 278: Mmy-Map0964Ft6Ul Mmy-Map1204Ft6Ul
15-4. MMY-MAP0964FT6UL MMY-MAP1204FT6UL – 278 –...
Page 279 15-4. MMY-MAP0964FT6UL MMY-MAP1204FT6UL – 279 –...
Page 280 15-4. Refrigeration Circuit Diagram MMY-MAP0964FT6UL MMY-MAP1204FT6UL MOTOR FAN PULSE CONDENSER MOTOR RIGHT SIDE (TO) PULSE VALVE MOTOR VALVE 2 SUB CONDENSER RIGHT SIDE PULSE MOTOR VALVE 1 CONDENSER LEFT SIDE (TE1) SUB CONDENSER LEFT SIDE (TE2) VALVE (SV11) 4WAY (SV5) (TS1) PRESSURE SENSOR...
Page 281 15-4. MMY-MAP0964FT6UL MMY-MAP1204FT6UL MMY-MAP Ref.No. Part No. Description 0964FT6UL 1204FT6UL 37547751 VALVE, CHECKED 43F47401 BONNET, 3/8 IN 43F47491 TUBE, CAPILLARY, I.D 1.5 43147195 BONNET, 1/2 IN 43100471 CABINET, AIR OUTLET 43100474 CABINET, AIR INLET, FRONT 43100475 CABINET, AIR INLET, BACK 4310A061 CABINET, SIDE, UP 4310A011...
Page 282 15-4. MMY-MAP0964FT6UL MMY-MAP1204FT6UL MMY-MAP Ref.No. Part No. Description 0964FT6UL 1204FT6UL 4314N073 VALVE, PACKED, 12.7 4314N075 VALVE, CHECK 43146739 COIL, SOLENOID, STF-01AQ1939UA1 43146676 JOINT,CHECK 4314N049 VALVE, 4WAY 43146711 VALVE, 2WAY 4314Q052 STRAINER 4314Q054 STRAINER 4314Q055 STRAINER 4314Q056 STRAINER 4314Q094 STRAINER 4314Q095 STRAINER 4314Q096 STRAINER...
Page 283 15-4. Inverter Assembly MMY-MAP0964FT6UL MMY-MAP1204FT6UL – 283 –...
Page 284 15-4. MMY-MAP0964FT6UL MMY-MAP1204FT6UL MMY-MAP Ref.No. Part No. Description 0964FT6UL 1204FT6UL SENSOR ASSY, SERVICE 43050425 SUPPORTER, ASSY 43F63248 SENSOR, TD (F6) 43150315 TERMINAL BLOCK, 3P, 100A 43160623 (Power supply terminal block) REACTOR 43158228 (Reactor (For fan) ) TERMINAL, 6P 43160621 (Relay terminal block for reactor) CONTACTOR, MAGNETIC 43152520 TERMINAL, 6P...
Page 285: Flow Selector Unit
15-5. Flo w Selector unit RBM-Y0383FUL, RBM-Y0613FUL Location Part No. Description RBM-Y0383FUL RBM-Y0613FUL 43149418 BODY ASSY, SERVICE 43149417 BODY ASSY, SERVICE 4316V338 PC BOARD ASSY, MCC-1431 43146716 COIL, SOLENOID , VPV 4314N088 COIL, SOLENOID , SR53 43F60029 FILTER,NOISE 43135013 CABLE ASSY, POWER 43135017 CABLE ASSY –...
Page 286 RBM-Y0963FUL Location Part No. Description RBM-Y0963FUL 43149419 BODY ASSY, SERVICE 4316V338 PC BOARD ASSY, MCC-1431 43146716 COIL, SOLENOID , VPV 4314N088 COIL, SOLENOID , SR53 43F60029 FILTER,NOISE 43135013 CABLE ASSY, POWER 43135017 CABLE ASSY – 286 –...
Page 287 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas NOTE 2 : leaking out, it s concentration will not exceed a set limit. The standards for minimum room volume are as The refrigerant R410A which is used in the air conditioner is follows.
Page 288 TOSHIBA CARRIER CORPORATION 72-34 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8585, JAPAN Copyright © 1999 to 2014 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved. Revision record First issue — — Jun., 2013 Revision 1 Numeric correction of Specifications Page 20, 24 Jun., 2013...

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Carrier MMY-MAP0724FT9UL Service Manual

Precautions for Safety

New Refrigerant (R410A)

1 Specifications

2 Wiring Diagram

3 Parts Rating

4 Refrigerant Piping Systematic Drawing

5 System Refrigeerant Piping Schematic Diagrams

6 Control Outline

7 Applied Control and Function

8 Test Operation

9 Troubleshooting

10 Backup Operation (Emergency Operation)

11 Outdoor Unit Refrigerant Recovery Method

12 Replacing Compressors

13 Outdoor Unit Parts Replacement Methods

14 Board Exchange Procedures

15 Exploded Diagram / Parts List

Quick Links

SERVICE MANUAL

Troubleshooting

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Summary of Contents for Carrier MMY-MAP0724FT9UL

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Table of Contents