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Toshiba MMY-MAP1404 Series Quick Reference

Super modular multi system
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FILE NO. :A11-005
Q
uick reference
R410A

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Summary of Contents for Toshiba MMY-MAP1404 Series

  • Page 1 FILE NO. :A11-005 uick reference R410A...

  • Page 2: Refrigerant Piping

    Refrigerant Piping Allowable Length of Refrigerant Pipes and Allowable Height Difference between Units Follower unit Outdoor unit Header Follower Follower Height unit unit unit difference between outdoor units H3 ≤ 5 m Outdoor unit connection piping kit (For linking of outdoor units) The longest piping between outdoor units: L0 ≤...

  • Page 3: Cautions For Installation

    System Restriction Outdoor unit combination Up to 4 units Total capacity of outdoor units Up to 48 HP Indoor unit connection Up to 48 units H2 ≤ 15m 135% of outdoor units’ capacity Total capacity of indoor units (varies depending on the height difference between indoor units.) 15m <...

  • Page 4: Adding Refrigerant

    Adding Refrigerant After finishing vacuuming, exchange the vacuum pump with a refrigerant cylinder and start additional charging of refrigerant. Calculation of additional refrigerant charge amount Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipes at the local site. For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.

  • Page 5: Refrigerant Piping Systematic Drawing

    Refrigerant Piping Systematic Drawing Outdoor Unit (14, 16HP) Model: MMY-MAP1404∗ ∗ ∗ ∗ ∗ , MMY-MAP1604∗ ∗ ∗ ∗ ∗ Fan motor Right side (TO) Heat exchanger Left side Heat exchanger (TE1) (SV5) Reducer PMV1 4-way valve PMV2 (TS1) Check valve High-pressure sensor Low-pressure sensor (TL)
  • Page 6 Refrigerant Piping Systematic Drawing (continue) Outdoor Unit (8, 10, 12HP) Model: MMY-MAP0804∗ ∗ ∗ ∗ ∗ , MMY-MAP1004∗ ∗ ∗ ∗ ∗ , MMY-MAP1204∗ ∗ ∗ ∗ ∗ Fan motor Right side (TO) Main heat exchanger PMV1 Sub heat exchanger at right side PMV2 Left side (TE1)
  • Page 7 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 8 Check Codes Displayed on Remote Controller and SMMS-i Outdoor Unit Check Code List (7-Segment Display on I/F Board) and Locations to Be Checked Main Main remote remote Description Description controller controller Indoor-remote controller communication error Compressor breakdown (detected at remote controller end) Compressor error (lockup) MG-CTT error Remote controller transmission error Current detection circuit error...

  • Page 9: Address Setup

    Address Setup 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 10: Address Setup And Check Procedure

    Address Setup (continue) 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 11: Address Setup Procedure

    Address Setup Procedure No central control: go to Address setting procedure 1 Central control of 2 or more refrigerant lines: go to Address setting procedure 2 When controlling a single refrigerant line When controlling 2 or more refrigerant lines (Example) centrally centrally Address setting...
  • Page 12 Address Setup (continue) (Example) Controlling 2 or more refrigerant lines as a group Outdoor Outdoor System wiring diagram Indoor Indoor Indoor Indoor (Group control) Remote controller Address setting procedure 2 Set a system address for each system using SW 13 and 14 on the interface P.C. board on the header outdoor unit of each system.
  • Page 13 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 OUTDOOR INDOOR 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 14 Address Setup (continue) Set the central control address. (For the setting of the central control address, refer to the installation manuals of the central control devices.) Header unit interface P.C. board SW15 SW05 SW04 D600 D601 D602 D603 D604 7-segment display SW13 SW14 SW01 SW02 SW03...
  • Page 15 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 16 Address Setup (continue) 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. Arrange one indoor unit and one remote controller set to 1 by 1.
  • Page 17 Resetting the Address (Resetting to the Factory Default (Address Undecided)) Method 1 Clearing each address separately using a wired remote controller. 0099 Set the system address, indoor unit address and group address to “ ” using a wired remote controller. (For the setting procedure, refer to the address setting procedures using the wired remote controller on the previous pages.) Method 2 Clearing all the indoor unit addresses on a refrigerant line at once from the outdoor unit.
  • Page 18 Address Setup (continue) 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 19: Check After Address Setup When Central Control System Is Connected

    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. entral remote controller U1 U2 U3 U4 To other refrigerant line Line address = 2 Line address = 1 Other Header...

  • Page 20: Troubleshooting In Test Operation

    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. A Check Code Is Displayed on the Remote Controller Check the code Header unit displayed on the...
  • Page 21 Operation from the Indoor Remote Controller is not Accepted, and a Check Code is Displayed on the 7-Segment Display of the Interface P.C. Board of the Header Unit Indoor Header unit remote controller 7-segment Cause Countermeasures status display Line addresses and indoor addresses of all the connected Set up addresses.
  • Page 22 Troubleshooting in Test Operation (continue) 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.) Cause Countermeasures Status...
  • Page 23 Monitoring Function of Remote Controller Switch When usiug a remote comtroller with the model name RBC-AMT32E CODE No. Data name Display format Unit Remote controller display example Room temperature (During control) ×1 °C Room temperature (Remote controller) ×1 °C Indoor suction temperature (TA) ×1 °C Indoor coil temperature (TCJ)
  • Page 24 Monitoring Function of Remote Controller Switch (continue) 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.
  • Page 25 l To check all the indoor unit addresses using an arbitrary wired remote controller. (When communication wirings of 2 or more refrigerant lines are CODE No. interconnected for central control) SET DATA SETTING UNIT R.C. (Execute it while the units are stopped.) TEMP.
  • Page 26 Monitoring Function of Remote Controller Switch (con- tinue) l To change all the indoor unit addresses using an arbitrary wired remote controller. (The method is available when the addresses have already been set automatically.) (When communication wirings of 2 or more refrigerant lines are interconnected for central control) NOTE You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller.

  • Page 27: Error Clearing Function

    Error Clearing Function Clearing From the Main Remote Controller l 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 28: Method To Set Indoor Unit Function Dn Code

    Method to Set Indoor Unit Function DN Code When Performing this Task, be sure to Use a Wired Remote Controller <Procedure> To be performed only when system at rest Push the TEST buttons simultaneously and hold for at least 4 seconds. The unit No.
  • Page 29 Function CODE No. (DN Code) Table (Includes All Functions Needed to Perform Applied Control on Site) Item Description At shipment Filter display delay timer 0000: None 0001: 150H According to type 0002: 2500H 0003: 5000H 0004: 10000H Dirty state of filter 0000: Standard 0000: Standard 0001: High degree of dirt (Half of standard time)
  • Page 30 Function to Start/Stop (ON/OFF) The following functions of the indoor unit can start or stop by the switches on the interface P.C. board of the header unit. Function Outline Setup/Release 7-segment display Cooling test Changes the mode of all the [Setup] Section A Section B...
  • Page 31 Indoor Unit from Outdoor Unit (1) Display of System Information (Displayed on Header Outdoor Unit Only) SW01 SW02 SW03 Display detail Unused System capacity A [...8]~[48]:8 to 48 HP B [HP] No. of outdoor units A [...1]~[...4]:1 to 4 B [...P] No.
  • Page 32 Indoor Unit from Outdoor Unit (continue) (2) Display of Outdoor Unit Information (Displayed on Each Outdoor Unit) SW01 SW02 SW03 Display detail Error data A Outdoor unit No.: [U1] to [U4] B Check code (only latest one displayed) If there is no check code, [– – –] is displayed. If there is sub-code, check code [ ∗...
  • Page 33 (3) Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit) SW01 SW02 SW03 Display detail Pd pressure data Pd pressure (MPaG) is displayed in decimal format. (MPaG: Approx. 10 times magnitude of kg/cm2G) ∗ ∗ ∗ ∗ ∗ ∗ Ps pressure data Ps pressure (MPaG) is displayed in decimal format.
  • Page 34 Indoor Unit from Outdoor Unit (continue) (5) Display of Indoor Unit Information (Displayed on Header Unit Only) SW01 SW02 SW03 Display detail Indoor BUS communication B Upon receiving signal: [..1], Other times: [..] signal receiving status Indoor check code B No check code: [–...

  • Page 35: Pulse Motor Valve (Pmv) Forced Open/Close Function In Indoor Unit

    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 36: Abnormal Outdoor Unit Discrimination Method By Fan Operating Function

    Indoor Unit from Outdoor Unit (continue) 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 the normal 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 37: Note For Backup Operation

    BACKUP OPERATION (EMERGENCY OPERATION) This product offers backup modes of operation to get 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 38: Compressor Backup Operation Setting

    BACKUP OPERATION (EMERGENCY OPERATION) (continue) 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>...

  • Page 39: Follower Outdoor Unit Backup Operation Setting (Failure Of Follower Outdoor Unit)

    Outdoor Unit Backup Operation Setting <Outline> This product allows outdoor unit backup operation setting to be performed either at the header unit or a follower unit. If any of the fault modes specified below occurs to one of the outdoor units in a multi-outdoor unit system, proceed with outdoor unit backup operation.
  • Page 40 BACKUP OPERATION (EMERGENCY OPERATION) (continue) (6) Turn on the power supply to all the units connected to the system other than the failed follower unit. Determine what to do with the power supply to the failed follower unit in the following manner. <In case of fault in compressor, electrical part, I/F P.C.

  • Page 41: Header Outdoor Unit Backup Operation Setting (Failure Of Header Outdoor Unit)

    (2) Header Outdoor Unit Backup Operation Setting (Failure of Header Outdoor Unit) <Work procedure> (1) Turn off the power supply to all the units connected to the system at the source. [Setup of failed header outdoor unit] (2) Fully close the gas pipe service valve of the failed outdoor unit. (3) Leave the service valves of the liquid and balance pipes fully open (to prevent refrigerant stagnation in the failed outdoor unit).
  • Page 42 BACKUP OPERATION (EMERGENCY OPERATION) (continue) (8) Set Bits 1 and 2 of SW30 on the interface P.C. board same as that of the failed header unit (terminator resistance setting). Outdoor interface P.C. board of unit selected as new header unit Turn on Bit 2 of SW09.

  • Page 43: Outdoor Unit Refrigerant Recovery Method

    OUTDOOR UNIT REFRIGERANT RECOVERY METHOD 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. (1) Note for Refrigerant Recovery Operation When performing pump-down operation, take note of the following matters: Note 1:...
  • Page 44 OUTDOOR UNIT REFRIGERANT RECOVERY METHOD (continue) (5) [rd] [... FF] will be displayed on the 7-segment display, and pump-down operation will start. ∗ To put the operation on hold midway, turn off the power supply to all the outdoor units, or push SW05 on the interface P.C.
  • Page 45 [Setup of failed outdoor unit] (13) When the low-pressure sensor output of the failed outdoor unit falls below 0.10MPa, fully close the balance pipe packed valve, and push SW05 on the interface P.C. board to finish the pump-down operation. (14) Turn off the power supply to all the outdoor units, and recover the residual refrigerant in the outdoor unit using a refrigerant recovery device.

  • Page 46: Refrigerant Recovery Procedure B (Case Of Outdoor Unit Backup Operation Setting)

    OUTDOOR UNIT REFRIGERANT RECOVERY METHOD (continue) (3) Refrigerant Recovery Procedure B (Case of Outdoor Unit Backup Operation Setting) <Outline> If outdoor unit backup operation setting is performed, use an alternative refrigerant recovery procedure as described below, provided that the power cannot be turned on for the failed outdoor unit. (Refrigerant will be recovered from the failed outdoor unit using the test cooling operation function.) Note 1: If cooling-season outdoor unit backup operation or outdoor unit backup operation is in progress with the...
  • Page 47 [Setup of outdoor units other than header unit and failed unit] (8) Leaving the balance pipes of the unit for pressure adjustment and the failed unit fully open, fully close the balance pipe packed valves of all other outdoor units. [Setup of header unit] (9) While monitoring the low-pressure sensor output, adjust the pressure to around 0.12 MPa by slowly closing the gas pipe service valve.

  • Page 48: How To Operate System While Failed Outdoor Unit Being Repaired

    OUTDOOR UNIT REFRIGERANT RECOVERY METHOD (continue) 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.
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This manual is also suitable for:

Mmy-map1604 seriesMmy-map0804 seriesMmy-map1004 seriesMmy-map1204 series

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