Page 1 MICRO INVERTER PACKAGED AIR-CONDITIONERS (Split system, air to air heat pump type) CEILING CASSETTE-4 WAY TYPE CEILING CASSETTE-4 WAY COMPACT TYPE Twin type Triple type Double twin type Double twin type FDT200VSAWPVH FDT200VSAWTVH FDT200VSAWDVH FDTC200VSAWDVH 250VSAWPVH 250VSAWDVH 250VSAWDVH 280VSAWPVH 280VSAWDVH...
Page 2 '21 • PAC-SM-383 CONTENTS 1. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ....1.1 Remote control (Option parts) ..............1.2 Operation control function by the wired remote control ....... 1.3 Operation control function by the indoor control ........10 (1) Auto operation ................... 10 (2) Operations of functional items during cooling/heating ......
Page 3 '21 • PAC-SM-383 1.4 Operation control function by the outdoor control ....... 29 (1) Determination of comressor speed (Frequency) ........29 (2) Compressor start control ................30 (3) Compressor soft start control ..............30 (4) Outdoor fan control..................31 (5) Defrost operation ..................34 (6) Protective control/anomalous stop control by compressor,s number of revolutions ..
Page 4 '21 • PAC-SM-383 ■How to read the model name Example: FDT 250 VSAW P VH Series code : Single type (blank) P : Twin type T : Triple type D : Double twin type Applicable power source ... See the specification Product capacity Model name : Ceiling cassette-4 way type...
Page 5 '16 • PAC-T-251 '21 • PAC-SM-383 1.10 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1.10.1 Remote control 1.1 Remote control (Option parts) Wired remote control (1) Wired remote control Model RC-EX3A Model RC-EX3A ⑤ LCD (with backlight) ③...
Page 6 '21 • PAC-SM-383 Wired remote control Model RC-E5 Model RC-E5 The figure below shows the remote control with the cover opened. Note that all the items that may be displayed in the liquid crystal display area are shown in the figure for the sake of explanation. Characters displayed with dots in the liquid crystal display area are abbreviated.
Page 7 '16 • PAC-T-251 '21 • PAC-SM-383 Wireless remote control (2) Wireless remote control RCN-E2 Indication section ① OPERATION MODE display Indicates selected operation mode. SET TEMP display Indicates set temperature. SLEEP TIMER time display Indicates the amount of time remaining on the sleep timer. ②...
Page 8 '16 • PAC-T-251 '21 • PAC-SM-383 1.10.2 Operation control function by the wired remote control 1.2 Operation control function by the wired remote control ● Model RC-EX3A ●Model RC-EX3A (1) Switching sequence of the operation mode switches of remote control (1) Switching sequence of the operation mode switches of remote control (a) Tap the change operation mode button on the TOP screen.
Page 9 '21 • PAC-SM-383 ●Content memorized with the power failure compensation are as follows. Note(1) Items (f) and (g) are memorized regardless whether the power failure compensation is effective or not while the setting of silent mode is cancelled regardless whether the power failure compensation is effective or not. At power failure –...
Page 10 '21 • PAC-SM-383 ● Model RC-E5 (1) Switching sequence of the operation mode switches of remote control COOL HEAT AUTO (2) CPU reset This functions when “CHECK” and “ESP” buttons on the remote control are pressed simultaneously. Operation is same as that of the power source reset.
Page 11 '21 • PAC-SM-383 1.3 Operation control function by the indoor control (1) Auto operation (a) If “Auto” mode is selected by the remote control, the heating and the cooling are automatically switched according to the difference between outdoor air temperature and setting temperature and the difference between setting temperature and return air temperature.
Page 12 '21 • PAC-SM-383 (ii) Regardless of the setting temperature, the cooling or heating operation mode is judged according to the "Judgment based on (ii) Regardless of the setting temperature, the cooling or heating operation mode is judged according to the "Judgment Room temperature/Cooling or Heating and Outdoor temperature/Cooling or Heating".
Page 13 '21 • PAC-SM-383 (b) FDU, FDUM, FDE series Return air temperature sensor [Thi-A (by the remote control when the remote control temperature sensor is enabled)] controls the indoor temperature environment simultaneously. (i) Operation is started in the cooling mode. When the difference between the return air temperature and the setting temperature is 2°C or less, the indoor fan speed is brought down by one.
Page 14 '21 • PAC-SM-383 (v) Combination of patterns which can be set for the timer operations Item Sleep timer OFF timer ON timer Weekly timer Item Sleep timer Í Í OFF timer Í Í ON timer Í Weekly timer Í Í Í...
Page 15 '21 • PAC-SM-383 (6) Hot keep Hot keep control is performed at the start of the defrost operation. (a) Contents of operation (i) When the indoor heat exchanger temperature (detected with Thi-R1 or R2) drops to less than 35°C, the speed of indoor fan follows fan setting at the time of thermostat OFF.
Page 16 '21 • PAC-SM-383 (8) Thermostat operation (a) Cooling (i) Thermostat is operated with the room temperature control. (ii) Thermostat is turned ON or OFF relative to the setting room temperature as shown below. Thermostat ON Temperature drop Thermostat OFF Temperature rise Setting room temperature (iii) Thermostat is turned ON when the room temperature is in the range of -1 <...
Page 17 '21 • PAC-SM-383 (d) Fan control during cooling thermostat OFF (i) Following fan controls during the cooling thermostat OFF can be selected with the indoor function setting of the wired remote control. ① Low fanspeed ② Set fan speed (Factory default) ③ Intermittence ④ Fan OFF (ii) When the “Low fan speed”...
Page 18 '21 • PAC-SM-383 (11) Drain pump control (a) This control is operated when the inverter frequency is other than 0 Hz during the cooling operation and automatic cooling and dehumidifying operations. (b) Drain pump ON condition continues for 5 minutes even when it enters the OFF range according to (a) above after turning the drain pump ON, and then stops.
Page 19 '21 • PAC-SM-383 (c) Operation check mode There is no communication with the outdoor unit but it allows performing operation in respective modes by operating the remote control. (d) Drain pump test run mode As the drain pump test run is established, the drain pump only operates and during the operation protective functions by the microcomputer of indoor unit become ineffective.
Page 20 '21 • PAC-SM-383 (17) Plural unit control – Control of 16 units group by one remote control (a) Function One remote control can control a group of multiple number of unit (Max. 16 indoor units). “Operation mode” which is set by the remote control can operate or stop all units in the group one after another in the order of unit. No. Thermostat and protective function of each unit function independently.
Page 21 '21 • PAC-SM-383 (19) Abnormal temperature sensor (return air/indoor heat exchanger) broken wire/short-circuit detection (a) Broken wire detection When the return air temperature sensor detects -50°C or lower or the heat exchanger temperature sensor detect -50°C or lower for 5 seconds continuously, the compressor stops. After 3-minute delay, the compressor restarts but, if it is detected again within 60 minutes after the initial detection for 6 minutes continuously, stops again (the return air temperature sensor: E7, the heat exchanger temperature sensor: E6).
Page 22 '21 • PAC-SM-383 (b) Input for external control The external input for the indoor unit can be selected from the following input. Input name Content 1 Run/Stop Refer to [(20) (c) Remote operation input] 2 Premission/Prohibition Refer to [(21) Operation permission/prohibition] 3 Cooling/Heating Refer to [(23) Selection of cooling/heating external input function] 4 Emergency stop...
Page 23 '21 • PAC-SM-383 Individual operation (Factory default) All units operation (Local setting) Only the unit Only the unit All units in one All units in one directly connected CnT-6 or directly connected remote control remote control to the remote CnTA to the remote control system can be system can be...
Page 24 '21 • PAC-SM-383 (a) In case of CnT ① Operation stop level > CnTA ③ Operation permission/prohibition level Operation Operation Operation Stop Stop Stop Level input Operation permission Operation permission CnTA Operation prohibition Operation permission/ prohibition setting Operation Operation( ) Operation Stop Stop...
Page 25 '21 • PAC-SM-383 (22) Temporary stop input In case of temporary stop, operation lamp of remote control lights, but indoor/outdoor unit stop the operation. (a) In case of “level input” setting (Factory default) Input signal to CnT-6 or CnTA is OFF → ON : Temporary stop Input signal to CnT-6 or CnTA is OFF → ON : Normal operation CnT-6 or CnTA input Actual operation Temporary stop Temporary stop Remote control...
Page 26 '21 • PAC-SM-383 (24) Fan control at heating startup (a) Starting conditions At the start of heating operation and after the end of hot start control, if the difference of setting temperature and return air temperature is 5°C or higher, this control is performed. (b) Contents of control (i) Sampling is made at each minute and, when the indoor heat exchanger temperature (detected with Thi-R) is 37°C or higher, present number of revolutions of indoor fan speed is increased by 10min...
Page 27 '21 • PAC-SM-383 (32) Fan circulator operation (RC-EX3A only) When the fan is used for circulation, the unit is operated as follows depending on the setting with the remote control. (a) If the invalid is selected with the remote control, the fan is operated continuously during the fan operation. (normal fan mode) (b) If the valid is selected with the remote control, the fan is operated or stopped when on the difference of the remote control temperature sensor and the return air temperature sensor becomes bigger than 3°C.
Page 28 '21 • PAC-SM-383 (37) Motion sensor control (RC-EX3A and RCN-E2 only) The sensor determines the presence of people and the amount of activity, and the following controls are done by the motion sensor. Following settings are necessary to activate motion sensor control. (a) Infrared (motion) sensor setting: Installation setting of remote control RC-EX3A The indoor unit which is set to “Enable”...
Page 29 '21 • PAC-SM-383 (i) Power saving / comfort control The set temperature is adjusted according to the presence of people and their amount of activity detected by the infrared (motion) sensor. MODE:AUTO/COOL/HEAT mode operation Heat Source & Activity High None Normal When the extent of human 33ºC...
Page 30 '21 • PAC-SM-383 1.4 Operation control function by the outdoor control Models FDC200, 250, 280VSA-W (1) Determination of compressor speed (Frequency) Required frequency Cooling/dehumidifying operation. Unit: rps Model FDC200 FDC250 FDC280 Usual operation Outdoor air temperature ≦ 15°C or Max. required indoor return air temperature ≦...
Page 31 '21 • PAC-SM-383 (2) Compressor start control Compressor starts upon receipt of the thermostat ON signal from the indoor unit. (b) However, at initial start of heating mode after turning on the power source breaker, it may enter the standby state for maximum 30 minutes (“...
Page 32 '21 • PAC-SM-383 (4) Outdoor fan control (a) Outdoor fan speed and fan motor revolution Unit: min Model Mode Fan motor revolution Speed ➀ Speed ➁ Speed ➂ Speed ➃ Speed ➄ Speed ➅ Speed ➆ FDC200, 250 Cooling/Dehumidifying Heating Speed ➀...
Page 33 '21 • PAC-SM-383 (c) Fan speed control during heating operation Fan speeds are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A). Note (1) It is detected by Tho-R1 or R2, whichever the lower. 【...
Page 34 '21 • PAC-SM-383 (d) Outdoor fan control at cooling low outdoor air temperature When all the following conditions are established after the start of compressor, the following control is implemented. If the outdoor air temperature (Tho-A) is in the zone in the cooling/dehumidifying mode, it has elapsed 20 seconds from the start of outdoor fan and the outdoor fan is at the speed ➀, the outdoor fan speed is controlled according to the outdoor heat exchanger temperature (Tho-R1, R2).
Page 35 '21 • PAC-SM-383 (5) Defrost operation (a) Starting conditions If all of the following defrost conditions A or conditions B are satisfied, the defrost operation starts. Defrost conditions A Cumulative compressor operation time after the end of defrost operation has elapsed 37 minutes, and the cumulative compressor operation time after the start of heating operation (remote control ON) has elapsed 30 minutes.
Page 36 '21 • PAC-SM-383 (6) Protective control/anomalous stop control by compressor’s number of revolutions (a) 　 Compressor discharge pipe temperature protection Discharge pipe temperature control (Solenoid valve SV1 control(At heating mode)) The solenoid valve SV1 opens to suppress the rise of discharge pipe temperature. 1) SV1 open condition In case the following conditions and other certain conditions are satisfied.
Page 37 '21 • PAC-SM-383 (b) 　 Cooling high pressure protection (i) Protective control 1 (Compressor speed control) Outdoor heat exchanger temperature (Tho-R) exceeds the control value A. Value A is changed from 59°C to 53°C by number of 63H1 operations. When the outdoor air temperature (Tho-A) is 40°C or higher. If outdoor heat exchanger temperature (Tho-R) is less than the control value A continuously for 6minutes, protective control finishes.
Page 38 '21 • PAC-SM-383 (c) Heating high pressure protection (i) Protective control As the indoor heat exchanger temperature (Thi-R) exceeds the setting value, the compressor speed (frequency) is controlled to suppress the rise of high pressure. Control value A is changed from 57°C to 51°C by number of 63H1 operations. Model Control value A (°C) Reduces compressor frequency...
Page 39 '21 • PAC-SM-383 (g) Over-current protection current safe controls I, II Detecting the outdoor inverter input (primary) current and the output (secondary) current, if the current values exceed setting values, the compressor speed (frequency) is controlled to protect the inverter. Reduces frequency Cooling Heating...
Page 40 '21 • PAC-SM-383 ( l ) Dewing prevention control [Control condition] During cooling and dehumidifying operation, if all the following conditions are established, the compressor speed (frequency) is reduced to prevent dewing and water splash. (i) Cooling electronic expansion valve aperture (EEVC) is 500 pulses. (ii) Suction superheat is more than 10°C.
Page 41 '21 • PAC-SM-383 (7) Silent mode As “Silent mode start” signal is received from the remote control, it operates by dropping the outdoor fan speed and the compressor speed (frequency). (b) For details, refer to items (1) and (4) above. (8) Test run It is possible to operate from the outdoor unit using the DIP switch on the outdoor unit control PCB.
Page 42 '21 • PAC-SM-383 (10) Base heater ON/OFF output control (Option) (i) Base heater ON conditions When all of following conditions are satisfied, the base heater is turned ON. ・Outdoor air temperature (detected with Tho-A) is 1ºC or lower. ・In the heating mode ・When the compressor is turned ON (ii) Base heater OFF conditions When either one of following conditions is satisfied, the base heater is turned OFF.
Page 43 '21 • PAC-SM-383 2. MAINTENANCE DATA 2.1 Diagnosing of microcomputer circuit (1) Selfdiagnosis function (a) Check indicator table Whether a failure exists or not on the indoor unit and outdoor unit can be know by the contents of remote control error code, indoor/outdoor unit green LED (power pilot lamp and microcomputer normality pilot lamp) or red LED (check pilot lamp).
Page 44 '21 • PAC-SM-383 (ii) Outdoor unit FDC200, 250, 280VSA-W Outdoor Remote control Indoor control PCB Outdoor control PCB inventer Reference Location of trouble Description of trouble Repair method page Green Green Yellow Error code Red LED Red LED Red LED LED (1) LED (1) Installation or operating...
Page 45 '21 • PAC-SM-383 (iv) Display sequence of error codes or inspection indicator lamps ■ Occurrence of one kind of error Displays are shown respectively according to errors. ■ Occurrence of plural kinds of error Section Category of display Error code on remote •...
Page 46 '21 • PAC-SM-383 ■ Error log and reset Error indicator Memorized error log Reset Remote control display • Higher priority error is memorized. • Stop the unit by pressing the ON/OFF switch of remote control. Red LED on indoor unit control PCB •...
Page 47 '21 • PAC-SM-383 (ii) Instruction of how to replace indoor unit control PCB SAFETY PRECAUTIONS Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the replacement in order to protect yourself. The precautionary items mentioned below are distinguished into two levels, WARNING and CAUTION. Both mentions the important items to protect your health and safety so strictly follow them by any means.
Page 48 '21 • PAC-SM-383 2) Model FDTC series PSC012D050 Replace and set up the PCB according to this instruction. i) Set to an appropriate address and function using switch on PCB. 　 Select the same setting with the removed PCB. Item Switch Content of control Address...
Page 49 '21 • PAC-SM-383 3) Models FDU, FDUM, FDE series PSB012D990 a) Control PCB PSB012D990B Replace and set up the PCB according to this instruction. i) Set to an appropriate address and function using switch on PCB. 　 Select the same setting with the removed PCB. Item Switch Content of control...
Page 50 '21 • PAC-SM-383 b) Power PCB FDU series PSC012D035 This PCB is a general PCB. Replace the PCB according to this instruction. i) Replace the PCB ①. Unscrew terminal(Arrow A) of the "E2" wiring(yellow/green) that is connected to PCB. ②. Replace the PCB only after all the wirings connected to the connector are removed. ③.
Page 51 '21 • PAC-SM-383 FDUM, FDE series This PCB is a general PCB. Replace the PCB according to this instruction. i) Replace the PCB ① Unscrew terminal of the wiring(yellow/green) connected to terminal block (CNWO) from the box. ② Replace the PCB only after all the wirings connected to the connector are removed. ③...
Page 52 '21 • PAC-SM-383 c) Motor control PCB (FDU200VH, 250VH, 280VH) PSC012D036 ① Replace the PCB i) Take off the connection of connector and remove the screw of power transistor then remove the PCB. Wipe off the silicon grease neatly on the control’s radiation heat fins. ii) Before installing the power transistor on the new PCB, apply uniformly a bundled of silicon grease first on the surface of power transistor.
Page 53 '21 • PAC-SM-383 ●DIP switch setting list ●DIP switch setting list • FDT, FDTC, FDUM, FDE series Switch Description Default setting Remark Switch Description Default setting Remark Address No. setting at plural indoor units control by 1 R/C SW5-1 Master * /Slave Master/Slave setting See table 2.
Page 54 '21 • PAC-SM-383 Troubleshooting at the outdoor unit When troubleshooting the outdoor unit, firstly assess the overview of malfunction and try to presume the cause and the faulty part by checking the error code dispalyed on the remote control and flashing pattern of indicator lamps (Red LED and Green LED), and then proceed further inspection and remedy it. Self-diagnosis system by microcomputor on indoor unit and outdoor unit PCB can assist to find the cause of malfunction smoothly by making a diagnosis of not only the anomaly of microcomputer, but also the anomaly in power source system, installation space, overload resulting from improper charging amount of refrigerant and etc.
Page 55 '21 • PAC-SM-383 • Models FDC200, 250, 280VSA-W PCA012D110 Exchange the control PCB according to the following procedure. 1. Exchange the PCB after elapsing 3 minutes from power OFF. 2. Measurement was done on both ends of connector (CNA1) during measurement, the voltage (DC) might charged the electrolytic capacitor, be sure that the voltage is discharged sufficiently (10V of less).
Page 56 '21 • PAC-SM-383 (c) Outdoor inverter PCB replacement procedure (c) Outdoor inverter PCB replacement procedure Precautions for Safety Precautions for Safety • Since the following precaution is the important contents for safety, be sure to observe them. • Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: WARNING and CAUTION are described as follows: WARNING...
Page 57 '21 • PAC-SM-383 (A) Power source for control PCB : CNA1, 1 –3 pin or CNA2, 1 - 4 pin (－) (＋) (＋) (－) (＋) (＋) (－) (－) ※：Presence and shape of electric component may vary according to a model. (B) Power source for fan motor (DC) : CNA2, 1 - 3 pin or CNA1, 1 - 4 pin Fig.2 Voltage measurement points ※：Presence and shape of electric...
Page 58 '21 • PAC-SM-383 ● DIP switch setting list (Outdoor unit)
Page 59 '21 • PAC-SM-383 (5) Check of anomalous operation data with the remote control (a) In case of RC-EX3A remote control [Operating procedure] ➀ On the TOP screen, touch the buttons in the order of “Menu” ➝ “Service setting” ➝ “Service & Maintenance” ➝ “Service password”...
Page 60 '21 • PAC-SM-383 (b) In case of RC-E5 remote control Number Data Item Operation data can be checked with remote control unit operation. (Operation Mode) (Set Temperature) ➀ Press the button. (Return Air Temperature) The display change “ ” (Remote Control Temperature Sensor) ➁...
Page 61 '21 • PAC-SM-383 Power transistor module (Including the driver PCB) inspection procedure Is the power transistor module cracked or burnt? Is there a short circuit between the power transistor module ∗ terminals? Compressor operation Is there any difference in the compressor current If there is a 10% or greater difference between phases? in the current in different phases.
Page 62 '21 • PAC-SM-383 (7) Inverter checker for diagnosis of inverter output Models FDC200, 250, 280VSA-W 　●Checking method (i) Setup procedure of checker. 1) Power OFF (Turn off the breaker). 2) Remove the terminal cover of compressor and disconnect the wires (U, V, W) from compressor. 3) Connect the wires U (Red) , V (White) and W (Black) of checker to the terminal of disconnected wires (U, V, W) from compressor respectively.
Page 63 '21 • PAC-SM-383 (8) Outdoor unit control failure diagnosis circuit diagram Models FDC200, 250, 280VSA-W...
Page 64: Table Of Contents
'21 • PAC-SM-383 2.2 Troubleshooting flow (1) List of troubles Models FDC200, 250, 280VSA-W Remote control display Description of trouble Reference page None Operates but does not cool None Operates but does not heat 65 · 66 None Earth leakage breaker activated None Excessive noise/vibration (1/3) None...
Page 65: Operates But Does Not Cool
'21 • PAC-SM-383 (2) Troubleshooting Green Content Error code Keeps flashing Stays OFF Indoor None Remote control: Operates but does not cool Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor fan operation. Check the temperature difference between return and supply air.
Page 66: Operates But Does Not Heat
'21 • PAC-SM-383 Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not heat (1/2) Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure ・ Is there any fouling, clogging on indoor and outdoor heat exchanger? ・...
Page 67 '21 • PAC-SM-383 Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not heat (2/2) Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page Is there any problem with the coil of SV1 function? Is the coil removed from the body of SV1? Fix abnormal condition.
Page 68: Earth Leakage Breaker Activated
'21 • PAC-SM-383 Green Content Error code Stays OFF Stays OFF Indoor None Earth leakage breaker activated Remote control: Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are OK the insulation resistance and Replace compressor. resistance between terminals(1) of compressor? (1) See page 105.
Page 69: Excessive Noise/Vibration
'21 • PAC-SM-383 Green Content Error code – – Indoor None Excessive noise/vibration (1/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure If excessive noise/vibration persists when sufficient Does time has elapsed after noise/vibration stopping the unit, it is occur during or soon after stopping operation considered that the air-...
Page 70: Excessive Noise/Vibration
'21 • PAC-SM-383 Green Content Error code – – Indoor None Excessive noise/vibration (2/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model Diagnosis Countermeasure From previous page Rearrange the piping to Are the pipes avoid contact with the contacting the casing.
Page 71: Excessive Noise/Vibration
'21 • PAC-SM-383 Green Content Error code – – Indoor None Excessive noise/vibration (3/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model Diagnosis Countermeasure From previous page If insufficient cooling/ 〔 Adjustment heating problem happens during commissioning 〕 due to anomalous operating Does noise/vibration occur when the conditions at cooling/ cooling/heating operation is in...
Page 72: Louver Motor Failure (Fdt, Fdtc, Fde Series)
'21 • PAC-SM-383 Green Content Error code Louver motor failure Keeps flashing Stays OFF Indoor None Remote control: (FDT, FDTC, FDE series) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDE series Diagnosis Countermeasure L Check at the indoor unit side. Operate after waiting for more than 1 minute.
Page 73 '21 • PAC-SM-383 Green Error code Content Power source system error Indoor Stays OFF Stays OFF Remote control: None (Power source to indoor unit control PCB) Outdoor 2-time flash Keeps flashing 5. Troubleshooting 1. Applicable model FDT, FDTC series only Diagnosis Countermeasure AC220/240V...
Page 74 '21 • PAC-SM-383 Green Error code Content Power source system error Indoor Stays OFF Stays OFF Remote control: None (Power source to indoor unit control PCB) Outdoor 2-time flash Keeps flashing 5. Troubleshooting 1. Applicable model Except FDT, FDTC series Diagnosis Countermeasure AC220/240V...
Page 75: Power Source System Error (Power Source To Remote Control)
'21 • PAC-SM-383 Green Content Error code Power source system error Keeps flashing 3-time flash Indoor None Remote control: (Power source to remote control) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection of the Correct it.➞Insert connector remote control's wiring OK? securely.
Page 76: Inspect I/U
'21 • PAC-SM-383 Green Content Error code INSPECT I/U Keeps flashing Stays OFF Indoor INSPECT I/U Remote control: (When 1 or 2 remote controls are connected) Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are 2 units of remote control connected? ⑴，...
Page 77: Inspect I/U (Connection Of 3 Units Or More Remote Controls)
'21 • PAC-SM-383 Green Content Error code INSPECT I/U Keeps flashing Stays OFF Indoor INSPECT I/U Remote control: (Connection of 3 units or more remote controls) Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are more than Reduce to 2 units or less.
Page 78: Communication Error At Initial Operation
'21 • PAC-SM-383 Green Content Communication error at Error code Keeps flashing Stays OFF Indoor Remote control: WAIT initial operation (1/2) Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure “ ” is still displayed on the WAIT remote control LED 2 minutes after power ON.
Page 79 '21 • PAC-SM-383 Green Content Communication error at Error code Keeps flashing Stays OFF Indoor Remote control: WAIT initial operation (2/2) Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Diagnosis for when the outdoor unit control PCB LED is turned off From previous Shut down the breaker and back on page...
Page 80: No Display
'21 • PAC-SM-383 Green Content Error code No display Stays OFF Stays OFF Indoor None Remote control: Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Remote control does not display anything after the power on. Is DC10V or higher detected at remote control connection Defective remote control...
Page 81: Remote Control Communication Circuit Error
'21 • PAC-SM-383 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: communication circuit error Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is it possible to Malfunction by noise reset normally by the power reset? Check peripheral environment.
Page 82: Communication Error During Operation
'21 • PAC-SM-383 Green Content Error code Keeps flashing 2-time flash Indoor Communication error during operation Remote control: Keeps flashing See below Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure ● In case that the outdoor unit red LED flashes 2-time Note (1) Inspect faulty connections (disconnection, looseness) on the outdoor unit terminal block.
Page 83: Indoor Heat Exchanger Temperature Sensor Anomaly
'21 • PAC-SM-383 Green Content Error code Indoor heat exchanger Keeps flashing 1-time flash Indoor Remote control: temperature sensor anomaly Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection of indoor heat Correct it. ➞ Insert connector exchanger temperature sensor securely.
Page 84: Return Air Temperature Sensor Anomaly
'21 • PAC-SM-383 Green Content Error code Return air temperature Keeps flashing 1-time flash Indoor Remote control: sensor anomaly Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection of return Correct it. ➞ Connect air temperature sensor connector.
Page 85: Heating Overload Operation
'21 • PAC-SM-383 Green Content Error code Heating overload operation Keeps flashing 1-time flash Indoor Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the air filter clogged? Wash. 2. Error detection method Is the indoor heat exchanger Defective indoor heat temperature sensor...
Page 86: Drain Trouble
'21 • PAC-SM-383 Green Content Error code Drain trouble Keeps flashing 1-time flash Indoor Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDU, FDUM Diagnosis Countermeasure series Check the error data in the remote control. Is there any overflow? Is DC12V at CNI connector? Check float switch.
Page 87: E10 Excessive Number Of Connected Indoor Units (More Than 17 Units) By Controlling With One Remote Control
'21 • PAC-SM-383 Excessive number of connected Green Content Error code indoor units (more than 17 units) Keeps flashing Stays OFF Indoor Remote control: by controlling with one remote control Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are more than 17...
Page 88: Address Setting Error Of Indoor Units
'21 • PAC-SM-383 Green Content Error code Address setting error of Keeps flashing Stays OFF Indoor Remote control: indoor units Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E11 occurs Is “Master IU address set” function of remote 2.
Page 89 '21 • PAC-SM-383 Communication error Green Content Error code between master and slave indoor units Keeps flashing 3-time flash Indoor Remote control: (Except for FDU series) Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model Except for FDU series Diagnosis Countermeasure Is it OK the unit Correct unit address setting.
Page 90: Indoor Fan Motor Anomaly (Except For Fdu Series)
'21 • PAC-SM-383 Green Content Error code Indoor fan motor anomaly Keeps flashing 1-time flash Indoor Remote control: (Except for FDU series) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model Except for FDU series Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? Does the fan...
Page 91 '21 • PAC-SM-383 Green Content Error code Indoor fan motor anomaly (1/2) Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: (FDU series) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1. Applicable model FDU series Diagnosis Countermeasure...
Page 92 '21 • PAC-SM-383 Green Content Error code Indoor fan motor anomaly (2/2) Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: (FDU series) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1. Applicable model FDU series Diagnosis Countermeasure...
Page 93: E18 Address Setting Error Of Master And Slave Indoor Units (Except For Single Type)
'21 • PAC-SM-383 Address setting error of Green Content Error code master and slave indoor units Keeps flashing 1-time flash Indoor Remote control: (Except for single type) Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model Except for single type Diagnosis Countermeasure E18 occurs Is “Master IU address set”...
Page 94: Indoor Unit Operation Check, Drain Pump Motor Check Setting Error
'21 • PAC-SM-383 Green Content Error code Indoor unit operation check, Keeps flashing 1-time flash Indoor Remote control: drain pump motor check setting error Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E19 occurs when the power ON Is SW7-1 Defective indoor unit on the indoor unit control...
Page 95: Indoor Fan Motor Rotation Speed Anomaly (Except For Fdu Series)
'21 • PAC-SM-383 Indoor fan motor rotation Green Content Error code speed anomaly Keeps flashing 1-time flash Indoor Remote control: (Except for FDU series) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model Except for FDU series Diagnosis Countermeasure Does any foreign material Remove foreign material.
Page 96: Indoor Fan Motor Rotation Speed Anomaly (Fdu Series)
'21 • PAC-SM-383 Indoor fan motor Green Content Error code rotation speed anomaly (1/2) Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: (FDU series) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1.
Page 97 '21 • PAC-SM-383 Indoor fan motor Green Content Error code rotation speed anomaly (2/2) Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: (FDU series) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1.
Page 98 '21 • PAC-SM-383 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: temperature sensor anomaly Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the remote Correct connector. control temperature sensor connected properly? 2.
Page 99 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Cooling overload operation Outdoor control PCB Keeps flashing 1-time flash Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * For the characteristics of outdoor heat exchanger temperature...
Page 100 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Discharge pipe Remote control: Outdoor control PCB Keeps flashing 1-time flash Yellow LED temperature error Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model Diagnosis Countermeasure All models * For the characteristics of discharge pipe temperature...
Page 101: Outdoor Heat Exchanger Temperature Sensor Anomaly
'21 • PAC-SM-383 Green Outdoor heat Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: exchanger temperature Outdoor control PCB Keeps flashing 1-time flash Yellow LED sensor anomaly Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...
Page 102 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Outdoor air temperature Remote control: Outdoor control PCB Keeps flashing 1-time flash Yellow LED sensor anomaly Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the outdoor air...
Page 103 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Discharge pipe temperature Outdoor control PCB Keeps flashing 1-time flash Yellow LED sensor anomaly Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model Diagnosis Countermeasure All models Is the...
Page 104: High Pressure Error (63H1 Activated)
'21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF High pressure error Remote control: Outdoor control PCB Keeps flashing 1-time flash (63H1 activated) Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure If the power source breaker is turned OFF and ON too quickly,...
Page 105 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Outdoor control PCB Keeps flashing 1-time flash Power transistor overheat Yellow LED Outdoor inverter 8-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is it possible to reset the error for 10 minutes after...
Page 106 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Outdoor control PCB Keeps flashing 1-time flash Current cut (1/2) Yellow LED Outdoor inverter 9-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the power source...
Page 107 '21 • PAC-SM-383 Green Error code Content Indoor Keeps flashing Stays OFF Remote control: Outdoor control PCB Keeps flashing 1-time flash Current cut (2/2) Yellow LED Outdoor inverter 9-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page Is the checked result of power Defective inverter...
Page 108 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Liquid back error Remote control: Outdoor control PCB Keeps flashing 1-time flash Yellow LED (Cooling mode) Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure ・...
Page 109 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Liquid back error Remote control: Outdoor control PCB Keeps flashing 1-time flash Yellow LED (Heating mode) Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model Diagnosis Countermeasure All models ・...
Page 110 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Communication error between Remote control: Outdoor control PCB Keeps flashing 1-time flash Yellow LED inverter PCB and outdoor unit control PCB Outdoor inverter Keeps flashing 5. Troubleshooting 1.
Page 111 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Outdoor control PCB Keeps flashing 1-time flash Outdoor fan motor anomaly Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign...
Page 112 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Low pressure error or Remote control: Outdoor control PCB Keeps flashing 1-time flash low pressure sensor anomaly (1/2) Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1.
Page 113 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Low pressure error or Remote control: Outdoor control PCB Keeps flashing 1-time flash low pressure sensor anomaly (2/2) Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1.
Page 114 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Inverter or power transistor anomaly Outdoor control PCB Keeps flashing 1-time flash Yellow LED Outdoor inverter 8-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Replace inverter PCB.
Page 115 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Suction pipe Remote control: Outdoor control PCB Keeps flashing 1-time flash temperature sensor anomaly Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection...
Page 116 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Low pressure sensor anomaly Outdoor control PCB Keeps flashing 1-time flash Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are the...
Page 117 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Compressor under-dome Remote control: Outdoor control PCB Keeps flashing 1-time flash temperature sensor anomaly Yellow LED Outdoor inverter Keep flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the...
Page 118 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Insufficient refrigerant amount Remote control: Outdoor control PCB Keeps flashing 1-time flash or detection of service valve closure Yellow LED Outdoor inverter Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...
Page 119 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Compressor startup failure (1/2) Outdoor control PCB Keeps flashing 5-time flash Yellow LED Outdoor inverter 4-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure In case that the compressor...
Page 120 '21 • PAC-SM-383 Green Error code Content Indoor control PCB Keeps flashing Stays OFF Remote control: Compressor startup failure (2/2) Outdoor control PCB Keeps flashing 5-time flash Yellow LED Outdoor inverter 4-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page...
Page 121 '21 • PAC-SM-383 3. ELECTRICAL WIRING (1) Indoor units (a) Ceiling cassette-4 way type (FDT) Models FDT50VH, 60VH, 71VH, 100VH, 125VH, 140VH PJF000Z735...
Page 122 '21 • PAC-SM-383 (b) Ceiling casette-4 way compact type (FDTC) Models FDTC50VH, 60VH PJF000Z739...
Page 123 '21 • PAC-SM-383 (C) Duct connected-High static pressure type (FDU) Models FDU200VH, 250VH, 280VH PJG000Z755...
Page 124 '21 • PAC-SM-383 (d) Duct connected-Low/Middle static pressure type (FDUM) Model FDUM71VH PJG000Z489...
Page 125 '21 • PAC-SM-383 Models FDUM100VH, 125VH, 140VH PJG000Z490...
Page 126 '21 • PAC-SM-383 (e) Ceiling suspended type (FDE) Models FDE50VH, 60VH, 71VH, 100VH, 125VH, 140VH PFA004Z087...
Page 127 '21 • PAC-SM-383 (2) Outdoor units Models FDC200VSA-W, 250VSA-W, 280VSA-W PCB004Z471...
Page 128 '21 • PAC-SM-383 4. PIPING SYSTEM (1) Single type Models 200, 250, 280 Indoor unit Outdoor unit Cooling cycle Heating cycle Check joint 4-way valve Temperature sensor (Tho-A) Muffler Gas line Service valve Model 200 (Flare connecting) Gas branch pipe Check joint (φ15.88) Temperature sensor...
Page 129 '21 • PAC-SM-383 (3) Triple type Model 200 Gas branch pipe 15.88) φ Indoor unit Indoor unit Indoor unit Outdoor unit Cooling cycle Heating cycle Check joint 4-way valve Temperature sensor (Tho-A) Muffler Gas line Flare connecting Service valve (Flare connecting) Temperature sensor Check joint (Heat exchanger)
Page 130 '21 • PAC-SM-383 (4) Double twin type Models 200, 250, 280 2nd branch pipe of gas ( φ 12.7) Outdoor unit Cooling cycle Heating cycle 1st branch Indoor unit Indoor unit pipe of gas Check joint 4-way valve Temperature sensor Gas line ( φ...
Page 131 '21 • PAC-SM-383 Preset point of the protective devices Equipped Parts name Mark 200, 250, 280 model unit Temperature sensor OFF 63˚C (for protection over- Th i -R ON 56˚C loading in heating) Indoor unit Temperature sensor OFF 1.0˚C Th i -R (for frost prevention) ON 10˚C Temperature sensor OFF 64˚C...
Page 132 '21 • PAC-SM-383 5. APPLICATION DATA 5.1 Installation of indoor unit PJF012D051 ①B (1) Ceiling cassette-4 way type(FDT) ●Ins This manual is for the installation of the indoor unit. CAUTION For electrical wiring work (Indoor unit), refer to page 161. For electrical wiring work (Outdoor unit) and ●Co refrigerant pipe work installation for outdoor unit, refer to page 165.
Page 133 '21 • PAC-SM-383 2D051 ①Before installation ③Preparation before installation ●Install correctly according to the installation manual. ●If suspension bolt becomes longer, do reinforcement of earthquake resistant. When moving the indoor unit, hold only ●Conﬁrm the following points: 　○For grid ceiling the hanging hardware (4 places) only, 　○Unit type/Power source speciﬁcation with care not to apply forces to any other...
Page 134 '21 • PAC-SM-383 ⑤Refrigerant pipe (continued) ④Installation of indoor unit (continued) ⑥D ● Protection of the indoor unit Caution: Refrigerating machine oil should not be applied to the threads of union or external surface of ﬂare. It ● If it is not possible to install the panel for a while or if attaching the ceiling board after is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction installing the indoor unit, protect the indoor unit by using upper carton.
Page 135 '21 • PAC-SM-383 ⑥Drain pipe (continued) ⑦Wiring-out position and wiring connection (continued) As wide as possible Wiring between indoor Indoor power ●When sharing a drain pipe for more than 1 Single Split (PAC) series VRF (KX) series (about100mm) and outdoor units source line Band Band...
Page 136 '21 • PAC-SM-383 PJF012D037 • Panel installation Read this manual together with the indoor unit’s installation manual. ⑤ Orientation of the panel installation ⑦ Ele Take note that there is an orientation to install the panel. The wiring WARNING Install the panel with the orientation shown on the right. The connec •...
Page 137 '21 • PAC-SM-383 2D037 ⑦ Electrical wiring ⑨ Installing the inlet grille To attach the inlet grille, follow the procedure described in ③ Removing the inlet grille in the reverse order. The wiring work varies depending on the panel type. Select the wiring work appropriate for the panel type. The connection positions of the indoor unit are as shown below irrespective of the panel type.
Page 138 '21 • PAC-SM-383 (2) Ceiling cassette-4 way compact type(FDTC) PJF012D509 ①B This manual is for the installation of the indoor unit. ●Ins For electrical wiring work (Indoor unit), refer to page 161. For electrical wiring work (Outdoor unit) and CAUTION ●Co refrigerant pipe work installation for outdoor unit, refer to page 165.
Page 139 '21 • PAC-SM-383 D509 ①Before installation ③Preparation before installation ●Install correctly according to the installation manual. ●If suspension bolt becomes longer, do reinforcement of earthquake resistant. When moving the indoor unit, hold only 　○For grid ceiling ●Confirm the following points: the hanging hardware (4 places) only, 　　When suspension bolt length is over 500mm, or the gap between the ceiling and roof is 　○Unit type/Power source specification...
Page 140 '21 • PAC-SM-383 ⑤Refrigerant pipe (continued) ④Installation of indoor unit (continued) ⑥D ● Protection of the indoor unit Caution: Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It ● If it is not possible to install the panel for a while or if attaching the ceiling board after is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction installing the indoor unit, protect the indoor unit by using upper carton.
Page 141 '21 • PAC-SM-383 ⑧Panel installation ⑥Drain pipe (continued) ● When sharing a drain pipe for more than 1 ● Install the panel on the indoor unit after electrical wiring work. As wide as possible (about100mm) ● Refer to the attached manual for panel installation for details. unit, lay the main pipe 100mm below the e.
Page 142 '21 • PAC-SM-383 ・ Panel installation PJF012D503 Read this manual together with the indoor unit’s installation manual. ③ <Removal> * Caution before use Removing the inlet grille ①Be careful the installation height when installing the indoor unit. ① Also note that the installation height of this indoor unit is different from that of current (old) unit. and pressing it in the direction of arrow ①, pull the Installation height from the ceiling surface to the indoor unit.
Page 143 '21 • PAC-SM-383 D503 201808 For the Draft prevention panel 6 Orientation of the panel installation Take note that there is an orientation to install the panel. ① (Wiring color: Red, Black) Install the panel with the orientation shown on the right. •...
Page 144 '21 • PAC-SM-383 FRESH AIR INTAKE (Location for installation) FOR FDTC At the time of installation use the duct hole (cut out) located at the positions shown in follwing diagram, as and when required. If the temperature conditions of intake outdoor air do not satisfy, process the outdoor air before intaking.
Page 145 '21 • PAC-SM-383 CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC Models FDTC50VH, 60VH Models FDTC50VH, 60VH Models FDTC50VH, 60VH All air flow (Hi) All air flow (Hi) All air flow (Hi) All air flow (P-Hi)
Page 146 '21 • PAC-SM-383 PJG012D039 (3) Duct connected-High static pressure type (FDU) ○This m (a) Indoor unit blow t •This manual is for the installation of an indoor unit and an outdoor air processing unit (FDU-F). CAUTION ① •For electrical wiring work (Indoor), refer to page 161. For electrical wiring work (Outdoor) and refrigerant pipe work installation for outdoor unit, ●...
Page 147 '21 • PAC-SM-383 202101 ○This model is middle static ducted type air-conditioning unit. Therefore, do not use this model for direct ③Cautions for the handling and installation place of outdoor air processing unit blow type air-conditioning unit. 1 This unit monitors the outdoor air temperature at the position of sensor A in the ﬁgure, and controls the start and ①Before installation stop with the thermostat based on the value of sensor A and the setting temperature by the remote control.
Page 148 '21 • PAC-SM-383 ⑥Duct work (continued) ⑤Installation of indoor unit ⑧ Work procedure FDU-F Air conditioner unit 1. Prepare a hole of speciﬁed size on the ceiling. ● 2. Install suspension bolts at speciﬁed positions. ● 3. Make sure to use four suspension bolts. Outdoor air 4.
Page 149 '21 • PAC-SM-383 ⑧Drain pipe ⑧Drain pipe (continued) Caution 4. Insulate the drain pipe. ● Install the drain pipe according to the installation manual in order to drain properly. ● Be sure to insulate the drain socket and rigid PVC pipe installed indoors otherwise it may Imperfection in draining may cause ﬂood indoors and wetting the household goods, etc.
Page 150 '21 • PAC-SM-383 ⑨Wiring-out position and wiring connection ⑩External static pressure setting If SW8-4 is turned to “ON”, E.S.P. setting range can be changed to 10 – 200 Pa (E.S.P. setting No. ● Electrical installation work must be performed according to the installation manual by an 1 –...
Page 151 '21 • PAC-SM-383 (b) Replacement procedure of the fan unit (c) Replacement procedure of the fan unit (c) Replacement procedure of the fan unit Notes(1) The unit is a heavy item. It must be supported securely and handled with care not to drop when it is necessary to replace. (2) For the maintenance space, refer to page 146.
Page 152 '21 • PAC-SM-383 PJG012D021 (4) Duct connected-Low/Middle static pressure type (FDUM) (a) Indoor unit ○This mo blow typ This manual is for the installation of an indoor unit. CAUTION For electrical wiring work (Indoor), refer to page 161. For electrical wiring work (Outdoor) and refrigerant ①B pipe work installation for outdoor unit, refer to page 165.
Page 153 '21 • PAC-SM-383 D021 ○This model is middle static ducted type air-conditioning unit. Therefore, do not use this model for direct ③Preparation before installation blow type air-conditioning unit. ●If suspension bolt becomes longer, do reinforcement of earthquake resistant. ①Before installation 　○For grid ceiling 　　When the suspension bolt length is over 500mm, or the gap between the ceiling and roof is ●Install correctly according to the installation manual.
Page 154 '21 • PAC-SM-383 ⑤Duct work (continued) ⑤Duct work ⑥R ① A corrugated board (for preventing sputtering) is attached to the main body of the air-conditioner Connecting the air intake/vent ducts 4. R (on the outlet port). Do not remove it until connecting the duct. ①Fresh Air Intake ●An air ﬁlter can be provided on the main body of the air-conditioner (on the inlet port).
Page 155 '21 • PAC-SM-383 ⑥Refrigerant pipe (continued) ⑦Drain pipe (continued) 4. Refrigerant is charged in the outdoor unit. 3. Make sure to make descending slope of greater than 1/100 and do not make up-down bend As for the additional refrigerant charge for the indoor unit and piping, refer to the installation and/or trap in the midway.
Page 156 '21 • PAC-SM-383 ⑧Wiring-out position and wiring connection ⑨External static pressure setting (continued) ● Electrical installation work must be performed according to the installation manual by an ● How to start automatic setting ① , ② Same setting as MANUAL SETTING. electrical installation service provider qualiﬁed by a power provider of the country, and be ③...
Page 157 '21 • PAC-SM-383 (b) Replacement procedure of the fan unit Notes(1) The unit is a heavy item. It must be supported securely and handled with care not to drop when it is necessary to replace. (2) For the maintenance space, refer to page 152. ( i ) Model FDUM71VH (ii) Models FDUM100VH, 125VH, 140VH 1) Remove the control box and the side panel, and remove the...
Page 158 '21 • PAC-SM-383 '21 • PAC-T-390 (5) Ceiling suspended type (FDE) PFA012D636B ① This manual is for the installation of an indoor unit. Insta For electrical wiring work (Indoor), refer to page 161. For electrical wiring work CAUTION (Outdoor) and refrigerant pipe work installation for outdoor unit, refer to page 165. ●...
Page 159 '21 • PAC-T-390 '21 • PAC-SM-383 Before installation Before installation Preparation before installation (continued) ① ③ ※Pipes can be taken out in 3 directions (rear, right or (mm) Install correctly according to the installation manual. top). Series type Air return grille ・...
Page 160 '21 • PAC-T-390 '21 • PAC-SM-383 Refrigerant pipe Drain pipe ⑤ ⑥ ⑦ ●The drain pipes may pull out either from back, right or left side. Caution ●Be sure to use new pipes for the refrigerant pipes. Use the ﬂare nut attached to the product. Caution Regarding whether existing pipes can be reused or not, and the washing method, refer to the instruction manual of the Install the drain pipe according to the installation manual in order to drain properly.
Page 161 '21 • PAC-T-390 '21 • PAC-SM-383 ⑦ Wiring-out position and wiring connection (continued) Clip FDE (small) operly. Wiring ,etc. ur, the Clip Clip FDE (medium) Wiring Clip Screw ① Screw ① Clip FDE (large) /or trap Wiring roperly Clip Control box Sliding Method Ⓐ...
Page 162 '21 • PAC-SM-383 5.2 Electric wiring work installation PSC012D117A PSC012D049 PSC012D117A 201609 • FDT, FDTC, FDU, FDUM, FDE series 201903 Electrical wiring work must be performed by an electrician qualiﬁed by a local power provider according to Electrical wiring connection the electrical installation technical standards and interior wiring regulations applicable to the installation site.
Page 163 '21 • PAC-SM-383 AIR CON NO ② Remote control, wiring and functions ③ Operation and conﬁrmation from remote control ● Do not install it on the following places Operation from the eco touch remote Operation from the standard remote AIR CON NO Item controller (RC-EX series) control (RC-E series)
Page 164 '21 • PAC-SM-383 ⑤ Operation and setting from remote control A : Refer to the instruction manual for RC-EX series ○：Nearly same function setting and operations are possible. *1: Remote controls before RC-EX1A don't have this function. B : Refer to the installation manual for RC-EX series △：Similar function setting and opperations are possible. *2: Remote controls before RC-EX3 don't have this function. C : Loading a utility software vie Internet Setting ＆ display item Description RC-EX3A RC-E5 1.Remote Control network 1 Control plural indoor units by a single remote control A remote control can control plural indoor units up to 16 (in one group of remote control network). ○...
Page 165 '21 • PAC-SM-383 ⑤ Operation and setting from remote control (continued) Setting ＆ display item Description RC-EX3A RC-E5 2 Administrator settings Temp increment setting The temp increment setting can be changed by 0.5˚C or 1.0˚C. Set temp display Ways of displaying setting temperatures can be selected. [Administrator password] R/C display setting Register [Room name] [Name of I/U] [Zone name]...
Page 166 '21 • PAC-SM-383 5.3 Installation of outdoor unit 1. HA PSC012D154B Models FDC200VSA-W, 250VSA-W, 280VSA-W Inverter driven split PAC 1) De FDC200VSA-W, FDC250VSA-W, FDC280VSA-W ● ● Designed for R32 refrigerant ◎This installation manual deals with outdoor units and general installation speciﬁcations only. For indoor units, refer to page 131. ◎When install the unit, be sure to check whether the selection of installation place, power supply speciﬁcations, usage limitation (piping length, height 3) Se differences between indoor and outdoor units, power supply voltage and etc.) and installation spaces...
Page 167 '21 • PAC-SM-383 1. HAULAGE AND INSTALLATION (Take particular care in carrying in or moving the unit, and always perform such an operation with two or more persons.) When a unit is hoisted with slings for haulage, take into consideration the offset of its gravity CAUTION Heavy center position.
Page 168 '21 • PAC-SM-383 4) Refrigerant pipe wall thickness and material NOTE ● Select refrigerant pipes of the table shown on the right wall thickness and material as Pipe diameter 6.35 9.52 12.7 15.88 22.22 25.4 28.58 [mm] speciﬁed for each pipe size. Minimum pipe wall thickness [mm] ●...
Page 169 '21 • PAC-SM-383 ※ In case of FDUM indoor unit combination. s larger Power cable size MAX. over current Power cable length Indoor-outdoor Power cable size MAX. over current Power cable length Indoor-outdoor Model Power supply Earth wire size Model Power supply Earth wire size ickness.
Page 170 '21 • PAC-SM-383 5.4 Method for connecting the accessory pipe PSC012D028H Models FDC200VSA-W, 250VSA-W, 280VSA-W ● Be sure to use the accessory pipe to connect the service valve on the gas side with the field pipe. ● Be sure to use the straight pipe （Procured at the field） shown in the table 1 applicable to the model 　...
Page 171 '21 • PAC-SM-383 About brazing ● Be sure to braze while supplying nitrogen gas. 　 If no nitrogen gas is supplied, a large amount of impurity 　（oxidized film）will be generated, which may clog the capillary 　 tube and the expansion valve, resulting in fatal malfunction. Accessory pipe A x 1 pc.
Page 172 '21 • PAC-SM-383 2-1 D INSTRUCTIONS FOR BRANCHING PIPE SET INSTALLATION FOR TWIN/TRIPLE/ W-TWIN CONFIGURATION SYSTEMS Suppo 5.5 Instructions for branching pipe set (DIS-WA1G, WB1G, TA1G, TB1G) Outdoor unit PSB012D865 PSB012D865 WARNING / CAUTION ● This set is for R410A and R32 refrigerant. ● Select a branching pipe set correctly rated for the combined total capacity of connected indoor units and install it according to this manual. An improperly installed branching pipe set can cause degraded performance or an abnormal unit stop.
Page 173 '21 • PAC-SM-383 2-1 DIS-WA1G 2-2 DIS-WB1G STEMS Supported combinations Supported combinations Liquid branching pipe Gas branching pipe Liquid branching pipe Gas branching pipe Outdoor unit model Indoor unit model Outdoor unit model Indoor unit model ID15.88 ID9.52 ② 3HP＋5HP ② ID12.7 ①...
Page 174 '21 • PAC-SM-383 2-6. Triple type for same model/different capacity or different model/different capacity Applicable to the difference in length of pipes after the branch being less than 3m * Connection is not allowed when the difference in length of pipes is larger than 3m. Outdoor unit model Indoor unit model Branching pipe...
Page 176 Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Copyright MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. © Copyright MITSUBISHI HEAVY INDUSTRIES, LTD.

Mitsubishi Heavy Industries FDT200VSAWPVH Service Manual

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