CONTENTS SAFETY CAUTION ................3 1. OUTLINE OF OUTSIDE AIR UNIT ..........8 1-1. SMMS System Specifications to Connect Outside Air Unit ..........9 2. SPECIFICATIONS................ 12 3. CONSTRUCTION VIEWS (EXTERNAL VIEWS)......13 4. WIRING DIAGRAM ..............15 5. PARTS RATING ................17 6.
SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual and understand the described items thoroughly in the following contents (Indications/Illustrated marks), and keep the manual for reference. The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
WARNING Before troubleshooting or repair work, check the ground wire is connected to the ground terminals of the main unit, otherwise an electric shock is caused when a leak occurs. If the ground wire is not correctly connected, contact an electrician for rework. Check ground wires.
WARNING After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 2MΩ or more between the charge section and the non-charge metal section (Ground position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s Insulator check side.
• Refrigerant (R410A) This air conditioner adopts a HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to Refrigerant (R410A) The pressure of R410A is high 1.6 times of that of the previous refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
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.
UL, MMY-MAP 6HT9P-UL) of Heat pump super modular multi type outdoor unit. • Corresponding system SMMS-i can connect to MMD-AP0481HF2UL for using diversity 30% (cooling basis) or below. Definition The Outside Air Unit means an air control for taken-in outside air.
1-1. SMMS System Specifications to Connect Outside Air Unit 1-1-1. Combination conditions • The Outside Air Unit is connectable to SMMS-i and SMMS-e. • However this is not connectable to SHRM-i and SHRM-e. • The total capacity of the indoor units and the Outside Air Units is restricted to 80% to 100% against the capacity of the outdoor units.
1-1-2. Use conditions Changing the set temperature Push the “TEMP. ” buttons of the wired remote control. Push to increase the temperature, and to decrease the temperature. (The set temperature cannot be changed in the fan mode.) Operation mode Setting range Factory default COOL 64 °F...
• Case to use in SMMS-e Outdoor Air Temperature °F Setup temp. COOL mode Cooling Automatic COOL +5.4°F operation starts Setup temp. Heating HEAT mode Automatic HEAT -5.4°F operation starts REQUIREMENT • In “COOL” or “FAN” mode, if temperature of the outside air is under 41 °F, the operation stop automatically in order to protect the equipment.
5. PARTS RATING Parts name MMD-AP0481HF2UL MMD-AP0721HF2UL, MMD-AP0961HF2UL Fan motor STF200-160U4A Running capacitor for fan motor 400V 6µF 400V 4µF Transformer TT-12 TA sensor Lead wire length: 47.2 in (1200mm) Lead wire length: 32.2 in (818mm) TF sensor Lead wire length: 98.4 in (2500mm) Ø0.16 in (Ø4 mm) size, Lead wire length:...
6. FAN CHARACTERISTIC <MMD-AP0481HF2UL> c i t c i t 230V cfm - A 230V Fan characteristics – 18 –...
<MMD-AP0721HF2UL> c i t c i t 230V V cfm - A 230V V Fan characteristics – 19 –...
<MMD-AP0961HF2UL> c i t c i t 1237 1237 230V V cfm - A 230V V Fan characteristics – 20 –...
Wire connection change of fan motor The motor wires for the fan have been connected to at shipment from the factory. Change the wire connection if change of the external static pressure is required due to the duct resistance. <MMD-AP048 type> Electrical control box Control P.C.
7. REFRIGERATING CYCLE DIAGRAM Liquid side Gas side Sensor (TF) Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Sensor (TCJ) Sensor (TC2) Sensor (TC1) Fan motor Sensor (TA) Functional part name Function outline (Connector CN082 (6P): Blue) 1) Super heat control function in cooling operation Pulse motor valve 2) Subcool control function in heating operation...
8. CONTROL OUTLINE Item Outline of specifications Remarks When power 1) Distinction of outdoor units supply is reset When the power supply is reset, the outdoor units are distinguished, and control is selected according to the distinguished result. 2) If resetting the power during a problem, the check code is cleared.
Item Outline of specifications Remarks Fan control 1) On the Outside Air Unit, HH tap only isprovided. 2) For 1 minute after operation start, the forced fan OFF control is invalid. 3) There is no cool air discharge preventive control. 4) When refrigerant is recovered while cooling or fan operation is selected, and when cooling oil is recovered while heating operation is selected, the...
Item Outline of specifications Remarks Freeze preventive 1) The cooling operation is performed as follows based on control the detected temperature of TC1 sensor, TC2 sensor (Low temperature and TCJ sensor. release) • When [J] zone is detected for 5 minutes, thermostat is forced to turn off.
Item Outline of specifications Remarks Cooling oil When the indoor air conditioner which stops, in which • Recovery (Refrigerant) thermostat is off, or which operates [FAN] performs the operation is recovery control following control by receiving the cooling oil (refrigerant) usually performed recovery signal from the outdoor unit.
Item Outline of specifications Remarks Central control 1) The remote control at indoor air conditioner side In central control mode, mode selection becomes able to select the operable contents ofthe [Central control] display unit by setup at the central control side. (Lights up) 2) Setup contents Display flashes when...
Main (Simple) wired remote control (up to 2 units) Display Display Function setting Key switch EEPROM DC5V Remote control Power communication circuit supply circuit Indoor unit Indoor control P. C. board (MCC-1403) Remote EEPROM control communication DC20V circuit DC12V DC5V TA sensor TC1 sensor H8/3039...
Indoor unit Up to 8 units can be connected. Wireless remote control kit Sensor P. C. board Indoor control P.C. board (MCC-1403) Remote EEPROM Remote control control communication communication circuit circuit DC20V DC12V DC5V Sensor circuit Display section TA sensor TC1 sensor H8/3039 Power supply circuit...
Main (Simple) wired remote control (up to 2 units) Display Display Function setting Key switch EEPROM DC5V Remote control Power communication circuit supply circuit Indoor unit Wireless remote control kit Indoor control P.C. board (MCC-1403) Remote EEPROM Remote control control communication communication circuit...
Power supply transformer (Secondary side) Power supply (AC11V, 14V, 20V) /CN075 /CN067 PMV output /CN082, DC12V Also used for communication of Microcomputer the central control system operation LED /CN040 /D002 Power supply transformer (Primary side) /CN074 Remote control power supply LED /D203 HA (T10) /CN061, DC12V...
9-1-5. P.C. Board Optional Switch/Connector Specifications Connector Function Specifications Remarks Ventilation output Setting at shipment: Linked operation; ON with indoor air CN032 DC12V conditioner operation, OFF with stop * Single operation setting by [VENT] button of remote Output control is performed from remote control. (DN=31) CN061 HA Start/Stop input (J01: Provided/None= Start/Stop input...
9-2. Functions at test run Cooling/Heating test run check The test run for cooling/heating can be performed from either indoor remote control or outdoor interface P.C. board. 1. Start/Finish operation of test run Test run from indoor remote control Wired remote control: Refer to the below item of “Test run” of the wired remote control. In case of wired remote control <RBC-AMT32UL>...
Check function for operation of indoor unit (Functions at indoor unit side) This function is provided to check the operation of the indoor unit singly without communication with the remote control or the outdoor unit. This function can be used regardless of operation or stop of the system. However, if using this function for a long time, a trouble of the equipment may be caused.
9-3. Method to Set Indoor Unit Function DN Code (When performing this task, be sure to use a wired remote control) <Procedure> To be performed only when system at rest Push the buttons simultaneously and hold for at least 4 seconds. The unit No.
Function Select Item No. (DN) Table (Indicates items necessary to perform the applicable control at local site) Item Contents At shipment from factory Filter sign lighting time 0000: None 0001: 150H 0002: 2500H 0002: 2500H 0003: 5000H 0004: 10000H Filter dirty degree 0000: Standard 0000: Standard 0001: Heavy dirt (Half of standard time)
Type DN code “10” Value Type Model ∗∗∗ 0016 Outside Air Unit MMD-AP HF2UL *1Default value stored in EEPROM mounted on service P.C. board Indoor Unit Capacity DN code “11” *1 Default value stored in EEPROM Value Capacity mounted on service P.C. board 0000* Invalid 0017...
9-4. Applied Control in Indoor Unit Remote location ON/OFF control box (TCB-IFCB-4UL) [Wiring and setup] • Use the exclusive connector for connection with the indoor control P.C. board. • In a group control, the system can operate when connecting with any indoor unit (Control P.C. board) in the group.
Ventilating fan control from remote control [Function] • The start/stop operation can be operated from the wired remote control when air to air heat exchanger or ventilating fan is installed in the system. • The fan can be operated even if the indoor unit is not operating. •...
Leaving-ON prevention control [Function] • This function controls the indoor units individually. It is connected with cable to the control P.C. board of the indoor unit. • In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the CODE No. is set to the connected indoor unit.
Address setup (Manual setting from Wired remote control) In case that addresses of the indoor units will be determined prior to piping work after wiring work • Set an indoor unit per a remote control. • Turn on power supply. (Example of 2-lines cabling) (Real line: Wiring, Broken line: Refrigerant pipe) Push...
Confirmation of indoor unit No. position 1. To know the indoor unit addresses though position of the indoor unit is recognized • In case of individual operation (Wired remote control : indoor unit = 1 : 1) (Follow to the procedure during operation) <Procedure>...
How to check all the unit No. from an arbitrary wired remote control <Procedure> Carry out this procedure when the system is turned off. The indoor unit No. and the position in the identical refrigerant piping can be checked. An outdoor unit is selected, the identical refrigerant piping and the indoor unit No. are displayed one after the other, and then its fan is on.
How to change an indoor unit address by using a wired remote control Use this method to change the address of indoor units (one to one or group control) that have had the original address set automatically. This procedure must be done while the units are not operating. Simultaneously push and hold the “SET ”, “CL ”, and “TEST...
How to change all indoor addresses from an arbitrary wired remote control (It is possible when setting has finished by automatic addresses.) Contents: The indoor unit addresses in each identical refrigerant piping line can be changed from an arbitrary wired remote control. Enter in address check/change mode and then change the address.
Function to clear the check code 1. Clearing method from remote control How to clear the check code of outdoor unit The currently detected check code of the outdoor unit is cleared by using the service monitor function of the remote control. (Check code of the indoor unit is not cleared.) (Only the check code of the outdoor unit in one refrigerant line system is cleared.) <Method>...
Monitoring function of remote control switch When using the remote control (Model Name: RBC-AMT32UL), the following monitoring function can be utilized. Calling of display <Contents> The temperature of each sensor of the remote control, indoor unit and outdoor unit and the operating status can be checked by calling the service monitor mode from the remote control.
< Based on the SMMS-e > CODE No. Data name Display format Unit Remote control display example Room temperature(Use to control) ×1 °C  = 27°C Room temperature(Remote control) ×1 °C Indoor suction air temperature (TA)* ×1 °F Indoor coil temperature (TCJ)* ×1 °F  = 80°F...
< Based on the SMMS-i > CODE No. Data name Display format Unit Remote control display example Room temperature(Use to control) ×1 °C  = 27°C Room temperature(Remote control) ×1 °C Indoor suction air temperature (TA)* ×1 °F Indoor coil temperature (TCJ)* ×1 °F  = 80°F...
Changing of settings for Celsius display • Push button if the unit stops. Procedure 1 Push simultaneously buttons for 4 seconds or more. After a while, the display part flashes as shown right. Check the displayed CODE No. is [ •...
10-2. Troubleshooting Method The remote controls (main remote control and central control remote control) and the interface P.C. board of an outdoor unit are provided with an LCD display (remote control) or a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the problem may be identified in the event of a problem by following the method described below.
(Trouble detected by main remote control) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical fault site Description of trouble Main remote control Operation Timer Ready Sub-code Flash No master remote control, Signals cannot be received from indoor unit; –...
List of Check Codes (Outdoor Unit) (Check code detected by SMMS-e and SMMS-i outdoor interface) If “HELLO” is displayed on the oudoor 7-segment for 1 minute or more, turn off the power supply once and then turn on the power supply again after 30 seconds or more. When the same symptom appears, it is considered there is a possibility of I/F board trouble.
Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block Typical problem site Description of problem central control or main remote Operation Timer Ready Sub-code control Flash display Outdoor heat exchanger Outdoor heat exchanger gas side temperature 01: TG1 gas side temperature sensors (TG1, TG2) have been open/...
Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block central control Typical problem site Description of problem or main remote Operation Timer Ready Sub-code Flash control display Fan- Fan- Sub- Sub- IPDU IPDU IPDU IPDU code code There are insufficient number of IPDUs (P.C.
(Check code detected by IPDU featuring in SMMS-e and SMMS-i outdoor unit) Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block Typical problem site Description of proplem central control or main remote Operation Timer Ready Sub-code control Flash display...
10-3. Troubleshooting Based on Information Displayed on Remote Control Using main remote control (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 control. Check codes are only displayed while the air conditioner is in operation.
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 “10-2. Troubleshooting Method”. : Goes off : Lighting : Blinking (0.5 seconds)
Heat exchanger temperature sensor (TCJ) trouble Operation Timer Ready Heat exchanger temperature sensor (TC2) trouble Indoor unit temperature sensor Heat exchanger temperature sensor (TC1) trouble troubles Ambient temperature sensor (TA/TSA) trouble Alternate blinking Discharge temperature sensor (TF) trouble Discharge temperature sensor (TD1) trouble Operation Timer Ready Discharge temperature sensor (TD2) trouble...
Light block Check code Cause of fault Operation Timer Ready Outdoor EEPROM trouble Synchronized blinking 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 –...
10-4. Check Codes Displayed on Remote Control and SMMS-e 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 Trouble detection Main Outdoor 7-segment display Description...
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code Too many All stop • Combined capacity of indoor units • Check capacities of indoor units Overloading indoor units exceeds 135% of combined connected.
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code Fan- IPDU All stop Communication is disrupted • Check wiring and connectors Sub- IPDU IPDU communication between IPDUs (P.C. involved in communication code trouble...
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code Indoor Indoor TF Stop of Sensor resistance is infinity or zero • Check connection of TF sensor unit sensor trouble corresponding (open/short circuit).
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code TD1 sensor All stop Discharge temperature of • Check installation of TD1 sensor. miswiring compressor 1 (TD1) does not •...
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code 01: TK1 oil circuit trouble Oil level All stop No temperature change is detected • Check for disconnection of TK1 02: TK2 oil circuit trouble detection by TK1 despite compressor 1...
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code No. of priority indoor Duplicated All stop More than one indoor units have • Check displays on priority indoor units priority indoor been set up as priority indoor unit.
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code Discharge All stop Discharge temperature (TD1) • Check outdoor service valves temperature exceeds 239°F (115°C). (gas side, liquid side) to confirm TD1 trouble full opening.
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code 01: TS condition All stop Protective shutdown due to • Check for insufficiency in leakdetection sustained suction temperature at or refrigerant quantity.
Check code Location Trouble detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Check Sub-code control code #0:Element short circuit IPDU Outdoor fan All stop (Sub code: #0) • Check fan motor. IPDU trouble Fan IPDU over current protection •...
• Do not install the air conditioner in a location that may be subject to a risk of expire to a combustible gas. If a combustible gas leaks and becomes concentrated around the unit, a fire may occur. • If separately sold products are used, use TOSHIBA/Carrier specified products only. Using unspecified products may cause fire, electric shock, water leak or other failure.
Operation CAUTION • Before opening the intake grille of the indoor unit set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts. Only a qualified Cautions about installation (Confirm the following cautions.) installer or qualified service person is allowed to remove the intake grille of the indoor unit or service panel of the •...
– 3 – Part names Part names and functions of the remote control Outside Air Unit Display section All indicators are displayed in the display example below. Air supply port Air intake port Intakes the outside air Cools / heats the outside air and Actually, only the selected options will be displayed.
Operation section Once the settings have been configured, all you need to do is push the button from then on. TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Set temperature display Service display The selected set temperature is displayed.
– 5 – Basic operation Operation mode and function COOL : Cools the outside air and sends it into the room When you use the air conditioner for the first time or change the settings, follow the procedures below. HEAT : Heats the outside air and sends it into the room From next time, pushing the button starts running of the air conditioner with the chosen settings.
Timer operation Installation Select a timer type from the following three: (Max. 168 hours) Location OFF timer : Stops running after the specified period. Repeat-OFF timer : Stops running after the specified period every time you use the air conditioner. •...
– 7 – Notes on operations and performance Maintenance WARNING Check before operation The protective device may activate in the following cases: For daily maintenance including Air Filter cleaning, make sure to ask the qualified service person particularly • Turn on the power switch at least 12 hours before following models as the maintenance requires high-place work;...
Cleaning the indoor unit and Troubleshooting remote control When the following symptoms are found, check the points described below before asking repair servicing. • Ask qualified service person to clean the indoor units Symptom Cause for the models listed in the warning on the top of this •...
– 9 – CAUTION If any of the following conditions occur, turn off the main power supply switch and immediately contact the dealer: • Switch operation does not work properly. • The main power fuse often blows out, or the circuit breaker is often activated. •...
Precautions for safety • Use the specified wires for wiring connect the terminals. Securely fix them to prevent external forces applied to the terminals from affecting the terminals. • Conform to the regulations of the local electric company when wiring the power supply. Installing, starting up, and servicing air--conditioning equipment can be hazardous due to system pressures, •...
– 3 – Accessory parts System control of Outside Air Unit Part name Q’ty Shape Usage System able to be combined Owner’s Manual — (Be sure to hand over to customers) Installation Manual This manual This manual for installer. The Outside Air Unit is connectable to SMMS (Super Modular Multi system). However this is not connectable to SHRM (Super Heat Recovery Multi system).
Selection of installation place Installation space Keep the space necessary for installation and service. Avoid installing in the following places. REQUIREMENT Select a location for the indoor unit where the cool or warm air will circulate evenly. Avoid installation in the following kinds of locations. The check port should be 23.6"...
– 5 – Installation Treatment of ceiling The ceiling differs according to structure of building. For details, consult your constructor or interior finish contractor. WARNING In the process after the ceiling board has been removed, it is important to reinforce ceiling foundation (frame) and Install the air conditioner certainly to sufficiently withstand the weight.
Installation of indoor unit Duct work Install temporarily the indoor unit. CAUTION Attach the hanging bracket to the hanging bolt. Be sure to fix the hanging bracket from both up and down sides of the hanging bracket by using the nuts Be sure to apply heat insulation to the duct to prevent dewy condition.
– 7 – Connecting flange <Example of construction> Refer to size in the figure attached to the main unit. High-efficiency filter *1 <MMD-AP048 type> <MMD-AP072 type, AP096 type> <Air supply port connecting flange> <Air supply port connecting flange> Long life prefilter *1 1.8"...
Fan characteristics <MMD-AP072 type> (Standard air volume: 989 cfm, Lower limit air volume: 693 cfm, Upper limit air volume: 1088 cfm) 1-2. 230V Fan characteristics 2-2. 208V Fan characteristics Fan characteristics Min 693 (cfm) Standard 989 (cfm) Max 1088 (cfm) Min 693 (cfm) Standard 989 (cfm) Max 1088 (cfm)
– 9 – <MMD-AP096 type> Wire connection change of fan motor (Standard air volume: 1237 cfm, Lower limit air volume: 866 cfm, Upper limit air volume: 1360 cfm) The motor wires for the fan have been connected to at shipment from the factory. 1-2.
Drain piping Check the draining Check the water drainage is surely performed at the test run. Check also no water leakage is found at the pipe connecting part. CAUTION Service panel Following the Installation Manual, perform the drain piping work that water is properly drained, and apply a heat insulation not to cause a dew condensation.
– 11 – Refrigerant piping • Tightening torque of flare pipe connections. • Turn back the pipe heat insulator and tie up with a Pressure of R410A is higher than that of R22. banding band. (Approx. 1.6 times) Therefore, using a torque Projection margin in flaring: B (Unit: in (mm)) Tie up with a banding band.
Keep the connecting terminal free from external procured. force. For the power supply specifications, follow to the right MMD-AP0481HF2UL 2.30 Improper wire connection or clamping may result in table. If capacity is little, it is dangerous because exothermic, fire or malfunction.
– 13 – Wiring between indoor and outdoor units Wire connection REQUIREMENT CAUTION • Connect the wires matching the terminal numbers. Incorrect connection causes a trouble. The Outside Air Unit and indoor unit for air conditioning cannot be controlled as a group. •...
Applicable controls CAUTION Basic procedure for changing Firmly tighten the screws of the terminal block. REQUIREMENT settings Keep the wire length as shown in figure below when it is connected to the terminal block. When the air conditioner is used for the first time, it will take some moments after the power has been turned on Change the settings while the air conditioner is not before the remote control becomes available for...
– 15 – Each time button is pushed, indoor Filter sign setting Test run unit numbers in the control group change cyclically. Select the indoor unit to change According to the installation condition, the filter sign term (Notification of filter cleaning) can be changed. settings for.
Select the operation mode with button, [ Cool] or [ Heat]. Troubleshooting • Do not run the air conditioner in a mode other than [ Cool] or [ Heat]. • The temperature controlling function does not work during test run. •...
– 17 – Check codes and parts to be checked Check code Wireless remote control Sensor block display of Judging Outdoor 7-segment display Check code name Wired remote receiving unit device control display Auxiliary code Operation Timer Ready Flash Check method On the remote control (Wired remote control, Central control remote control) and the interface P.C.
— SIM Duplicated central control addresses Indoor — SIM Over No. of connected outdoor units TCC-LINK : TOSHIBA Carrier Communication Link. L29 The same as E31 SIM No. of IPDU trouble L30 Detected indoor address SIM Indoor outside interlock Indoor —...
13. DETACHMENTS WARNING CAUTION Before replacement of the parts, be sure to stop Be sure to put on the gloves at disassembling operation of the air conditioner and turn off work; otherwise an injury will be caused by a switch of the breaker. part, etc.
Remove the M5 screws from the cabinet and then put them on the electric parts box. Rmove the M5 screws (8 positions). Remove the cover plate. Cover plate Take off the self tapping M4 screws (3 positions). Removed status Pull out the fan toward you. Rmove the self tapping M4 screws (3 positions).
Remove the fan assembly from the air intake unit. Fan motor Fan case, Fan Motor base Relay terminal block cover, there is the relay terminal block inside of it. Replacement of fan and fan motor Remove the relay terminal block cover. Remove the ground screw.
Remove the fan motor assembly from the fan assembly. Take off M4 screws (2 positions). Z view Z view Take off M4 screws (2 positions). Take off M4 screws (2 positions). Take off M8 screws (4 positions) mounting the motor base. –...
Remove parts to be replaced from the fan motor assembly. Take off M4 screws (4 positions) from the bell mouth. Remove the fan Loosen the setscrews. When replacing the fan motor, set it so that the model name label directs upward. Replace the fan motor with a new one.
14. P. C. BOARD EXCHANGE PROCEDURES Indoor unit 14-1. Replacement of indoor P.C. board Part code Model type P.C. board type ∗∗∗ 431-6V-588 MMD-AP HF2UL series MCC-1403 < Set the type code and capacity code and then set DN [C8] = [ 0001 ] > Points to note when replacing indoor P.C.
Procedure 1: reading setting data from EEPROM (Read the setting data from EEPROM, including both the factory settings and any modifications made to them on site.) Push the buttons simultaneously and hold for at least 4 seconds. (This number corresponds to the same number shown on the Remote Control Operation Diagram.) * In the case of group control, the unit No.
Procedure 2: replacing P.C. board Replace the faulty P.C. board with a service P.C. board. Be sure to replicate the old jumper setting (removal), and connector short-circuit setting (e.g. CN34) on the service P.C. board. (See the diagram at below.) CN041 (MCC-1403) CN030...
Procedure 3: writing setting data in EEPROM (The EEPROM of the service P.C. board has been set to the factory default values.) Push the buttons simultaneously and hold for at least 4 seconds. (This number corresponds to the same <Fig. 1 RBC-AMT32UL> number shown on the Remote Control Operation Diagram.) (Under UNIT No., is displayed.)
Table CODE No. table (Please record the objective unit data at field) Item Memo At shipment Filter sign lighting time 0002: 2500 hour Dirty state of filter 0000: Standard Central control address 0099: Unfixed Heating suction temp shift 0002: +3.6˚F (+2˚C) PRE-DEF indication selection 0000: Standard Cooling only...
WARNINGS ON REFRIGERANT LEAKAGE Important Check of Concentration Limit The room in which the air conditioner is to be installed requires a design that in the event of NOTE 2 : refrigerant gas leaking out, its concentration will The standards for minimum room volume are as follows. not exceed a set limit.