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Toshiba SMMS-e Quick Reference

Eu model cooling type heat pump type
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Quick Reference
R410
EU Model
Cooling type
Heat pump type
Test Operation
in Test Operation
Monitoring Function
NFC (Wave Tool)
Troubleshooting
Q18-001

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Summary of Contents for Toshiba SMMS-e

  • Page 1 Q18-001 Quick Reference EU Model Cooling type Heat pump type Refrigerant Piping Refrigerant Piping Systematic Address Setup Test Operation Troubleshooting in Test Operation Monitoring Function Service Support Function Refrigerant Leakage Detection Outdoor Interface P.C board Leaking/Clogging Backup Operation NFC (Wave Tool) Troubleshooting R410...
  • Page 2 Refrigerant Piping <Cooling,Heat pump type> Additional refrigerant After finishing vacuuming, exchange the vacuum pump with a refrigerant canister 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 3 Refrigerant Piping <Cooling,Heat pump type> For T8P,T7P model 0806 1006 1206 14B6 1406 1606 18B6 1806 2006 2206 Refrigerant amount Cooling only model 10.5kg 10.5kg 10.5kg 10.5kg 11.5kg 11.5kg 11.5kg 11.5kg 11.5kg 11.5kg charged in factory When the system is charged with refrigerant at the factory, the amount of refrigerant needed for the pipes at the site is not included.
  • Page 4 Refrigerant Piping <Cooling,Heat pump type> For HT8P - E Allowable length of refrigerant pipes and allowable height difference between units Follower unit utdoor unit Height Header Follower difference unit unit between outdoor units H3 ≤ 5 m Outdoor unit connection piping kit (For linking of outdoor units) The longest piping between outdoor units: Height...
  • Page 5 Refrigerant Piping <Cooling,Heat pump type> For T8P - E Allowable length of refrigerant pipes and allowable height difference between units Follower unit Outdoor unit Height Header Follower difference unit unit between outdoor units H3 ≤ 5 m Outdoor unit connection piping kit (For linking of outdoor units) The longest piping between outdoor units: Height...
  • Page 6 Refrigerant Piping <Cooling,Heat pump type> Cautions for installation • Set the outdoor unit first connected to the bridging pipe to the indoor units as the header unit. • Install the outdoor units in order of their capacity codes: A (header unit) •...
  • Page 7 Refrigerant Piping <Cooling,Heat pump type> Selection of refrigerant piping Header F ollower F ollower unit A unit B unit C Outdoor unit (2) B alance pipes Ø9.5 (1) Outdoor unit connecting pipes (3) Main (8) Outdoor unit connection piping kit (F or linking of outdoor units ) piping (7) B ranching header (4) B ranching pipe...
  • Page 8 Refrigerant piping (Continued) Refrigerant Piping <Cooling, Heat pump type > <Cooling,Heat pump type> Connecting pipe size of outdoor unit Type Gas side Liquid side Same as connecting MMY-MAP0806* Ø19.1 Ø12.7 pipe size of the Outdoor unit MMY-MAP1006* Ø22.2 Ø12.7 utdoor unit. ↓...
  • Page 9 Refrigerant Piping <Cooling,Heat pump type> Pipe size between branching sections Total capacity codes of Pipe size differs indoor units at downstream side Liquid based on the total Gas side side Equivalent to capacity code value Equivalent to HP capacity of indoor units at the below 2.4 below 6.6 Ø12.7...
  • Page 10 Refrigerant Piping Systematic <Cooling,Heat pump type> Outdoor Unit (8, 10, 12HP) Model: MMY-MAP0806 , MMY-MAP1006 , MMY-MAP1206 Fan motor Right side Main heat exchanger (TO) Reducer Left side (PMV1) Main heat exchanger (TE1) (TL1) (SV52) Reducer 4-way valve High-pressure (TS1) sensor Low-pressure (TS3)
  • Page 11 Refrigerant Piping Systematic <Cooling,Heat pump type> Outdoor Unit (14, 16HP) Model: MMY-MAP1406 , MMY-MAP1606 Fan motor Right side Main heat exchanger (TO) Right side Sub heat exchanger (PMV1) (TG1) Left side (PMV3) Main heat exchanger (TL1) (TE1) (TG2) (TL2) Left side Sub heat exchanger (TE2) 4-way valve High-pressure...
  • Page 12 Refrigerant Piping Systematic <Cooling,Heat pump type> Outdoor Unit (18, 20, 22HP) odel: MMY-MAP1806 , MMY-MAP2006 , MMY-MAP220 Fan motor Fan motor Right side Main heat exchanger (TO) (PMV1) Right side Sub heat exchanger (TG1) Left side (PMV3) (TL1) Main heat exchanger (TE1) (TG2) (TL2)
  • Page 13 Refrigerant Piping Systematic E xplanation of F unc tional P arts <C ooling, Heat pump type> <Explanation of Functional Parts> Functional part name Functional outline (Hot gas bypass) (Connector CN311: White) 1) Low pressure release function 2) High pressure release function 3) Gas balance function during stop time (Connector CN321: White) SV3A...
  • Page 14 Address Setup Chack 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 opera- tion, 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 15 Address Setup Address Setup This product requires address setup before operation. Follow this procedure for address setup. 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 16 Address Setup Cautions for installation 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 procedure Outdoor Outdoor Central Central Central...
  • Page 17 Address Setup (Example) Controlling 2 or more refrigerant lines as a group Outdoor Outdoor System wiring Indoor Indoor Indoor Indoor diagram (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 18 Address Setup 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) 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 19 Address Setup After completing address setting of all systems, turn off DIP switch 2 of SW30 on the interface P.C. boards of all the header outdoor units connected to the same central control, except the unit that has the lowest address. (For unifying the termination of the wiring for the central control of indoor and outdoor units) Connect the relay connectors between the [U1, U2] and [U3, U4] terminals of the header outdoor unit of each refrigerant line.
  • Page 20 Address Setup 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.
  • Page 21 Address Setup Manuai 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 (Wiring example for 2 refrigerant lines) 1 by 1.
  • Page 22 Address Setup 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 23 Address Setup 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 Stop FILTER RESET TEST SET CL (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another.
  • Page 24 Address Setup To check all the indoor unit addresses using an arbitrary wired remote controller. (When communication wirings of 2 or more refrigerant lines are interconnected for central control) CODE No. S E T DAT A S E TTING UNIT No. R .C .
  • Page 25 Address Setup Change the indoor unit address using a remote controller To change an indoor unit address using a wired remote controller. The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one-to-one), or an indoor unit in a group.
  • Page 26 Address Setup 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 Address Setup <Clearing Indoor Unit address> Resetting the address (Resetting to he factory default (address undecided) Method 1 Clearing each address separately using a wired remote controller. 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 previ- ous pages.) Method 2...
  • Page 28 Address Setup <Clearing Indoor Unit address> 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.
  • Page 29 Address Setup <Clearing Indoor Unit address> 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...
  • Page 30 Address Setup <Clearing Indoor Unit address> Chaeck items before Test Operation ( before powering - on) Prior to the test operation, check the following items to verify there are no problems with the installation work. Main check items for electric wiring The communication system differs from that of R22 or R407 refrigerant “Modular Multi System”...
  • Page 31 Test Operation Checklist 1 Using 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) Follower unit (C) appropriate? Is the gauge of the mm²...
  • Page 32 Test Operation <Setup Remote Controller> Check the additional amount of refrigerant. Cooling, Heat pump type Checklist 2 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 Indoor unit horsepower, and the corrective amount of refrigerant (C) according to system horsepower.
  • Page 33 Test Operation <Setup Remote Controller> 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 •...
  • Page 34 Test Operation <Setup Remote Controller> Wireless remote controller Wireless remote controller (4-way Cassette type) (Ceiling type) Test run (Forced cooling operation) Test run (Forced cooling operation) Requirement: Requirement: • Finish the forced cooling operation in a short time • Finish the forced cooling operation in a short time because it applies excessive strength to the air because it applies excessive strength to the air conditioner.

  • Page 35: A Check Code Is Displayed On The Remote Controller

    Troubleshooting in Test Operation <Cooling, Heat pump type> If there are phenomena such as the output of a check code or the remote controller is not accepted when powered on after wiring work or during address setup operation, the following causes are considered. A Check Code is displayed on the remote controller Check code Header...
  • Page 36 Troubleshooting in Test Operation <Cooling, Heat pump type> Operation from the indoor remote controller is not accepted, and a Check Code is displayed on the 7 - seqment display of the interface PC board of header unit. Indoor remote Header unit controller 7-segment status...
  • Page 37 Troubleshooting in Test Operation <Cooling, Heat pump type> In checking the number of connected outdoor units and connected indoor unit after address setup, a lower number of connected units is displayed. (There are outdoor/indoor units that do not operate in a test operation.) Miswiring of communication lines between outdoor units After modification of wiring, set up the addresses again and The number of...
  • Page 38 Troubleshooting Troubles hooting in Tes t Operation in Test Operation (C ontinued) Mis wiring example R emote Header unit F igure c ontroller 7-s egment Mis wiring example s tatus dis play Header unit Header unit U3 U4 U5 U6 F ig.
  • Page 39 Monitor Function When using a remote controller with the model name RBC-AMT32E 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 40 Monitor Function Data name Display format Remote controller display example Unit Room temperature (Use to Indoor suction air temperature (TA) × l i o × l i o × l i o × Indoor discharge air temperature (TF) × Filter sign time ×...
  • Page 41 Monitor 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 42 Monitor Function (1) Display of system Information (Displayed on Header Outdoor Unit Only) Unused System capacity A […8]~[64]:8 to 64 HP B [HP] No. of outdoor units A […1]~[…3]:1 to 3 B […P] No. of indoor units connected / No. A […0.]~[64.]:0 to 64 (No.
  • Page 43 Monitor Function (2) Display of Outdoor Unit Information (Displayed on each Outdoor Unit) Check code Outdoor unit No.: [U1] to [U3] B Check code (only latest one displayed) If there is no check code, [– – –] is displayed. If there is sub-code, check code [ ] and sub-code [–...
  • Page 44 Monitor Function (3) Display of Outdoor Cycle Data (Display at each Outdoor Unit) Display detail SW01 SW02 SW03 Pd pressure data Pd pressure (MPaG) is displayed in decimal format. * ** (MPaG: Approx. 10 times magnitude of kg/cm2G) P d. Ps pressure data Ps pressure (MPaG) is displayed in decimal format.
  • Page 45 Monitor Function (4) Display of Outdoor Cycle Data (Display at Header Unit) * This method is used when displaying follower unit information on the 7-segment display of the header unit. Error data [U. ], : SW03 setting No. + 1 (Outdoor unit No. U2 to U 3) B Check code is displayed (latest one only).
  • Page 46 Monitor Function (5) Display of Indoor Unit information (Display on Header Unit only) SW01 SW02 SW03 Display detail Indoor BUS communication signal Upon receiving signal: [..1], Other times: [..] receiving status Indoor check code No check code: [– – –] Indoor HP capacity 0.
  • Page 47 Service Support Function Check Function for Connecting of Refrigerant and Control Lines This function is provided to check misconnection of the refrigerant pipes and the control transmission line (Wiring over lines) between indoor unit and outdoor unit by using the switch on the interface P.C. board of the header unit. However, be sure to check the following items prior to executing this check function.
  • Page 48 Service Support Function Note 1: Criteria for the difference between suction and discharge temperatures (1) Cooling operation After operating for a minimum of 30 minutes in “COOL” mode, if the T dry bulb temperature difference between suction and discharge air of the indoor unit is 8°C deg or more, it is normal. (2) Heating operation After operating for a minimum of 30 minutes in “HEAT”...
  • Page 49 Service Support Function Operation start (7-segment display) Press the push-switch SW04 on the interface P.C. board of the header unit for 2 seconds or more. The Cooling [ CC ] Operation operation starts. Check that 7-segment display [B] shows [ CC] for Heating [ HH ] cooling and [ HH] for heating.
  • Page 50 Service Support Function 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. 1 Straight Changes the mode of all the [Setup]...
  • Page 51 Service Support Function (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 52 Service Support Function (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 53 Service Support Function (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 54 Service Support Function (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 55 Service Support Function <Check Code Clearing Function> (1) Clearing from the main remote controller Check code clearing in outdoor unit Check code 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.
  • Page 56 Service Support Function <Check Code Clearing Function> (2) Clearing check code 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 check code for each refrigerant circuit system without resetting the power supply.

  • Page 57: Remote Controller Distinction Function

    Service Support Function <Check Code Clearing Function> 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 58 Service Support Function <Check Code Clearing Function> Pulse Motor Valve (PMV) Forced Open / Close Function in Indoor Unit ulse 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.
  • Page 59 Service Support Function <Check Code Clearing Function> 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 60 Service Support Function <Check Code Clearing Function> 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 61 Service Support Function <Check Code Clearing Function> Abnormal Outdoor Unit Discrimination Method by Fan Operation Function This function is provided to forcedly operate the fan of the outdoor unit in which a check code 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 had problem, use this function for the system stop due to a follower unit failure (Check code [ [Operation]...
  • Page 62 Service Support Function <Check Code Clearing Function> Manual Adjustment 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 63 Service Support Function <Check Code Clearing Function> <Service support function list> n i l n i l n i l l l o n i l e l l v i t Check code clear function 1~16 [0 1]~[1 6] Indoor No.
  • Page 64 Refrigerant Leakage Detection The refrigerant leakage and be confirmed by using the switches on interface PCB of the outdoor unit. If there is a leak, the location must be found in order to recover the refrigerant. After that, implement appropriate countermeasure and refill the refrigerant to its standard volume.
  • Page 65 Outdoor Interface P.C board Outdoor Interface P.C. board Function Setting Swithch / 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 66 Outdoor Interface P.C board Switching of Jumper Wire/Function Cooling, Heat pump type Setup Function switching setup O : With jumper, X : 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 67 Leaking/Clogging Li t of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MAP0806 , 1006 , 1206 ) Clogging Location of Unit generating Part Detected failure and check code Symptom problem check code (see next page) Outdoor PMV1 Corresponding unit Activation of high-pressure protection...
  • Page 68 Leaking/Clogging <Cooling, Heat pump type> Refrigerant Cycle Circuit Fan motor Right side Main heat exchanger (TO) Reducer Left side (PMV1) Main heat exchanger (TE1) (TL1) (SV52) Reducer 4-way valve High-pressure (TS1) sensor Low-pressure (TS3) Oil separator sensor Fusible plug (SV2) (SV3D) (SV41) (SV42)
  • Page 69 Leaking/Clogging <Cooling, Heat pump type> <MMY-MAP0806 , MAP1006 and MAP1206 > Check items and procedures to follow when checking oil circuit with compressor(s) disconnected 1) With PMV1 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
  • Page 70 Leaking/Clogging <Cooling, Heat pump type> List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MAP1406 , 1606 ) Clogging Location of Unit generating Part Detected failure and check code Symptom problem check code (see next page) Outdoor PMV1, 3 Corresponding unit...
  • Page 71 Leaking/Clogging <Cooling, Heat pump type> Outdoor Unit (14, 16HP) Model : MMY-MAP1406 , CMMY-MAP1606 Fan motor Right side Main heat exchanger (TO) (PMV1) Right side Sub heat exchanger (TG1) Left side (PMV3) Main heat exchanger (TL1) (TE1) (TG2) (TL2) Left side Sub heat exchanger (TE2) 4-way valve High-pressure...
  • Page 72 Leaking/Clogging <Cooling, Heat pump type> <MMY-MAP1406 and MAP1606 > Check items and procedures to follow when checking oil circuit with compressor(s) disconnected 1) With PMV1 and 3 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
  • Page 73 Leaking/Clogging <Cooling, Heat pump type> List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MAP1406 , 1606 ) Clogging Location of Unit generating Part Detected failure and check code Symptom problem check code (see next page) Outdoor PMV1, 3 Corresponding unit...
  • Page 74 Leaking/Clogging <Cooling, Heat pump type> Outdoor Unit (14, 16HP) Model : MMY-MAP1406 , CMMY-MAP1606 Fan motor Right side Main heat exchanger (TO) (PMV1) Right side Sub heat exchanger (TG1) Left side (PMV3) Main heat exchanger (TL1) (TE1) (TG2) (TL2) Left side Sub heat exchanger (TE2) 4-way valve High-pressure...
  • Page 75 Leaking/Clogging <Cooling, Heat pump type> <MMY-MAP1406 and MAP1606 > Check items and procedures to follow when checking oil circuit with compressor(s) disconnected 1) With PMV1 and 3 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
  • Page 76 Leaking/Clogging <Cooling, Heat pump type> List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MAP1806 , MAP2006 and MAP2206 ) Clogging Location of Unit generating Part Detected failure and check code Symptom problem check code (see next page) Outdoor PMV1, 3...
  • Page 77 Leaking/Clogging <Cooling, Heat pump type> Outdoor Unit (18, 20, 22HP) Model : MMY-MAP1806 , MMY-MAP2006 , MMY-MAP2206 Fan motor Fan motor Right side Main heat exchanger (TO) (PMV1) Right side Sub heat exchanger (TG1) Left side (PMV3) (TL1) Main heat exchanger (TE1) (TG2) (TL2)
  • Page 78 Leaking/Clogging <Cooling, Heat pump type> <MMY-MAP1806 , MAP2006 and MAP2206 > Check items and procedures to follow when checking oil circuit with compressor(s) disconnected 1) With PMV1 and 3 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the pressure at the check joint of discharge pipe.
  • Page 79 Backup Operation This product offers backup modes of operation to tide over certain emergency situations. If a failure occurs in one of the compressors, it is possible to operate the system on an emergency basis by operating only the remaining compressor, (compressor backup operation).

  • Page 80: Compressor Backup Operation Setting

    Backup Operation 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. <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 81 Backup Operation (3) Change the connection of wiring between Comp-IPDU and Fan-IPDU, as shown in the below. Outdoor Unit (8, 10, 12, 14, 16, 18HP) Model: MMY-MAP0806 , MAP1006 , MAP1206 , MAP1406 , MAP1606 , 1.When compressor No.1 (front left) is faulty：No change the connection of wiring 2.When compressor No.2 (front right) is faulty：...
  • Page 82 Backup Operation Outdoor Unit (18, 20, 22HP) Model: MMY-MAP 1806 , MAP2006 , MAP2206 1.When compressor No.1 (front left) is faulty： Change the connection of wiring between Comp-IPDU and Fan-IPDU as shown in the below. CN22 CN21 CN23 CN23 Change the connection of wiring which is connected to the CN21, 23 of Comp-IPDU1 ・Change to CN22 of Comp-IPDU2 from CN21 of Comp-IPDU1 ・Change to CN23 of Comp-IPDU2 from CN23 of Comp-IPDU1 (Tighten two wirings together with screw terminal)

  • Page 83: Outdoor Unit Backup Operation Setting

    Backup Operation 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 84 Backup Operation (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. board, or IPDU P.C. board> Leave the power supply off.
  • Page 85 Backup Operation 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 86 Backup Operation (8) Set Bits 1 and 2 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. SW0 6 SW0 7 SW0 9...
  • Page 87 Backup Operation Cooling-Season Outdoor Unit Backup Operation Setting <Outline> Limited to summer and other situations where there is no need for heating operation, this function makes it possible to get backup operation up and running quickly without going through the normal setup procedure, regardless of which type of outdoor unit has failed, the header unit or a follower unit.
  • Page 88 The NFC TAG DEVICE of the Outdoor unit communicates with SMARTPHONE that simplifies the install, the test operation and the maintenance of the SMMS-e. *NFC (Near Field Communication) As for the details, refer to the Operation Manual of “SMMS WAVE TOOL FOR SMARTPHONE”...
  • Page 89 NFC (Comminication) How to set the NFC operation all time permission Follow the below procedure. Rotaly switch Push switch 7-segment display NFC operation Step setting SW01 SW02 SW03 SW04 [ A ] [ B ] (Default setting) After the power input, :below 48 hours [ nF] [ c.00 ] [NFC operation permit]...

  • Page 90: Troubleshooting Method

    Troubleshooting 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 site/ part may be identified in the event of a...
  • Page 91 Troubleshooting (Check code detected bymain remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical problem site Description of problem Main remote controller Operation Timer Ready Sub-code Flash No master remote controller, Signals cannot be received from indoor unit; –...
  • Page 92 Troubleshooting List of Check Codes (Outdoor Unit) detected by SMMS- outdoor interface - typical examples) IPDU: Intelligent Power Drive Unit (Inverter P.C. board) : Lighting, : Flashing, : Goes off ALT.: Flashing is alternately when there are two flashing LED SIM: Simultaneous flashing when there are two flashing LED Check code Display of receiving unit...
  • Page 93 Troubleshooting Check code Display of receiving unit Outdoor 7-segment display Indicator light block TCC-LINK Typical problem site Description of problem central control or main remote Operation Timer Ready Sub-code Flash controller display 01: T 1 03: T – Outdoor pressure sensor Wiring error in outdoor pressure sensors (Pd, Ps) –...
  • Page 94 Troubleshooting Check code Display of receiving unit Outdoor 7-segment display Indicator light block TCC-LINK Typical problem site Description of problem central control or main remote Operation Timer Ready Sub-code Flash controller display A3-IPDU Fan-IPDU A3-IPDU Fan-IPDU ○ ○ ○ ○ ○...
  • Page 95 Troubleshooting detected by IPDU featuring in SMMS- standard outdoor unit - typical examples) Check code Display of receiving unit Outdoor 7-segment display Indicator light block TCC-LINK Typical problem site Description of proplem central control or main remote Operation Timer Ready Sub-code controller Flash...
  • Page 96 Quick Reference...

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