Mitsubishi Heavy Industries FDUA160AVSAVH Service Manual
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Mitsubishi Heavy Industries FDUA160AVSAVH Service Manual

Mitsubishi Heavy Industries FDUA160AVSAVH Service Manual

Duct connected-high static pressure type
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Manual No.'21 • PAC-SM-398
SERVICE MANUAL
For Australian market only
MICRO INVERTER PACKAGED AIR-CONDITIONERS
(Split system, air to air heat pump type)
DUCT CONNECTED-HIGH STATIC PRESSURE TYPE
FDUA160AVSAVH
200AVSAVH

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  • Page 1 Manual No.'21 • PAC-SM-398 SERVICE MANUAL For Australian market only MICRO INVERTER PACKAGED AIR-CONDITIONERS (Split system, air to air heat pump type) DUCT CONNECTED-HIGH STATIC PRESSURE TYPE FDUA160AVSAVH 200AVSAVH...
  • Page 2 '21 • PAC-SM-398 TABLE OF CONTENTS 1. MICRO INVERTER PACKAGED AIR-CONDITIONERS ........2. ZONE CONTROL INSTALLATION MANUAL (FDUA160VH only) ....114...
  • Page 3 '21 • PAC-SM-398 1. MICRO INVERTER PACKAGED AIR-CONDITIONERS CONTENTS 1.1 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ....1.1.1 Remote control (Option parts) .............. 1.1.2 Operation control function by the wired remote control ....1.1.3 Operation control function by the indoor control ....... 10 (1) Auto operation ...................
  • Page 4 '21 • PAC-SM-398 (34) Indoor unit overload alarm (RC-EX(Z)3A only).......... 25 (35) Peak-cut timer (RC-EX(Z)3A only) ............25 (36) Motion sensor control (RC-EX(Z)3A and RCN-E2 only)......26 (37) Dew drop prevention control 1 (FDUA160VH only)........27 (38) Dew drop prevention control 2 (FDUA160VH only)........27 1.1.4 Operation control function by the outdoor control ......
  • Page 5 '16 • PAC-T-251 '21 • PAC-SM-398 1.10 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1.1 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1.10.1 Remote control 1.1.1 Remote control (Option parts) Wired remote control (1) Wired remote control Model RC-EX3A Model RC-EX(Z)3A ⑤ LCD (with backlight) ③...
  • Page 6 '21 • PAC-SM-398 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-398 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-398 1.10.2 Operation control function by the wired remote control 1.1.2 Operation control function by the wired remote control ●Model RC-EX(Z)3A (1) Switching sequence of the operation mode switches of remote control (a) Tap the change operation mode button on the TOP screen. (b) When the change operation mode screen is displayed, tap the button of desired mode.
  • Page 9 '21 • PAC-SM-398 ●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-398 ● 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-398 1.1.3 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-398 (ii) Regardless of the setting temperature, the cooling or heating operation mode is judged according to the "Judgment based on Room temperature/Cooling or Heating and Outdoor temperature/Cooling or Heating". 1)  I n case of "Room temperature/Cooling < Indoor return air temperature" and "Outdoor temperature/Cooling < Out- door air temperature"...
  • Page 13 '21 • PAC-SM-398 (4) Timer operation (a) RC-EX(Z)3A (i) Sleep timer Set the time from the start to stop of operation. The time can be selected in the range from 30 to 240 minutes (in the unit of 10-minute). Note (1) Enable the “Sleep timer” setting from the remote control. If the setting is enabled, the timer operates at every time. (ii) Set OFF timer by hour Set the time to stop the unit after operation, in the range from 1 to 12 hours (in the unit of hour).
  • Page 14 '21 • PAC-SM-398 (5) Hot start (Cold draft prevention at heating) (a) Operating conditions When either one of following conditions is satisfied, the hot start control is performed. (i) From stop to heating operation (ii) From cooling to heating operation (iii) Form heating thermostat OFF to ON (iv) After completing the defrost operation (only on units with thermostat ON) (b) Contents of operation (i) Indoor fan motor control at hot start 1) Within 7 minutes after starting heating operation, the fan mode is determined depending on the condition of...
  • Page 15 '21 • PAC-SM-398 (7) Thermostat operation (a) Cooling (i) Thermostat is operated with the room temperature control. (ii) Thermostat is turned ON or OFF relative to the set room temperature as shown below. Thermostat ON Temperature drop Thermostat OFF Temperature rise Set room temperature (iii) Thermostat is turned ON when the room temperature is in the range of -1 <...
  • Page 16 '21 • PAC-SM-398 (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 17 '21 • PAC-SM-398 (10) 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 18 '21 • PAC-SM-398 (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 19 '21 • PAC-SM-398 (16) 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 20 '21 • PAC-SM-398 (18) 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 21 '21 • PAC-SM-398 (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 [(19) (c) Remote operation input] 2 Premission/Prohibition Refer to [(20) Operation permission/prohibition] 3 Cooling/Heating Refer to [(22) Selection of cooling/heating external input function] 4 Emergency stop...
  • Page 22 '21 • PAC-SM-398 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 23 '21 • PAC-SM-398 (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 24 '21 • PAC-SM-398 (21) 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 25 '21 • PAC-SM-398 (23) 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 26 '21 • PAC-SM-398 (31) Fan circulator operation (RC-EX(Z)3A 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 27 '21 • PAC-SM-398 (36) Motion sensor control (RC-EX(Z)3A 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-EX(Z)3A The indoor unit which is set to “Enable”...
  • Page 28 '21 • PAC-SM-398 (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 29 '21 • PAC-SM-398 1.1.4 Operation control function by the outdoor control (1) Determination of compressor speed (Frequency) Required frequency Unit: rps (a) Cooling/dehumidifying operation Model Usual operation Outdoor air temperature ≦ 15°C or Max. required Indoor return air temperature ≦ 20°C frequency Silent mode 70（85）...
  • Page 30 '21 • PAC-SM-398 (2) Compressor start control (a) 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 31 '21 • PAC-SM-398 (b) Fan tap control during Cooling/Defumidifying operation Fan taps are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A). • Silent mode only Note (1) It is detected by Tho-R1 or R2, whichever the higher. zone zone zone...
  • Page 32 '21 • PAC-SM-398 (e) Snow protection fan control If the DIP switch (SW3-2) on the outdoor unit control PCB is turned ON, the outdoor fan is operated for 30 seconds at 4 tap speed once in every 10 minutes depending on the outdoor air temperature (detected with Tho-A) in the stop mode or anomalous stop mode.
  • Page 33 '21 • PAC-SM-398 (c) Switching of defrost control with SW3-1 (i) If SW3-1 on the outdoor unit control PCB is turned to ON, it becomes easier to enter the defrost operation. Use this when installing a unit at snowing regions. (ii) Control contents 1) It allows entering the defrost operation under the defrost condition A when the cumulative heating operation time becomes 30 minutes.
  • Page 34 '21 • PAC-SM-398 (c) Heating high pressure protection (i) Protective control 1) 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. 2) Control value A is updated to an optimum value automatically according to the operating conditions. Existing piping adaptation switch: SW5-1 Reduces compressor frequency Model...
  • Page 35 '21 • PAC-SM-398 (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 36 '21 • PAC-SM-398 ( 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. ➀ Cooling electronic expansion valve aperture (EEVC) is 500 pulses. ➁...
  • Page 37 '21 • PAC-SM-398 (7) Silent mode (a) As “Silent mode start” signal is received from the remote control, it operates by dropping the outdoor fan tap and the compressor speed (frequency). (b) For details, refer to items (1) and (4) above. (8) Test run (a) It is possible to operate from the outdoor unit using the DIP switch on the outdoor unit control PCB.
  • Page 38 '21 • PAC-SM-398 (10) Base heater ON/OFF output control (Option) (a) 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. (b) Base heater OFF conditions When either one of following conditions is satisfied, the base heater is turned OFF.
  • Page 39 '21 • PAC-SM-398 Display in DRED mode during defrost operation Display in DRED mode RC-EX Series (From RC-EX(Z)3) RC-EX Series (From RC-EX(Z)3) RC-E Series (From RC-E5) RC-E Series (From RC-E5)
  • Page 40 '21 • PAC-SM-398 1.2 MAINTENANCE DATA 1.2.1 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 41 '21 • PAC-SM-398 (ii) Outdoor unit FDCA160, 200VSA Outdoor Indoor unit control Outdoor unit control Remote control 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 42 '21 • PAC-SM-398 (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 43 '21 • PAC-SM-398 ■ 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 44 '21 • PAC-SM-398 (ii) Instruction of how to replace indoor 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. ●...
  • Page 45 '21 • PAC-SM-398 b) Power PCB • Model FDUA160VH 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. This PCB is a general PCB.
  • Page 46 '21 • PAC-SM-398 • Model FDUA200VH 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 47 '21 • PAC-SM-398 c) Motor control PCB i ) Replace the PCB ① 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. ②...
  • Page 48 '21 • PAC-SM-398 ●DIP switch setting list Switch Description Default setting Remark Address No. setting at plural indoor units control by 1 R/C SW6-1 SW6-2 Model selection As per model See table 1. SW6-3 SW6-4 Normal * /Test run SW7-1 Test run, Drain pump motor Normal Refer to Page 16.
  • Page 49 '21 • PAC-SM-398 (4) 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 50 '21 • PAC-SM-398 Models FDCA160, 200VSA PCA012D050 Replace the control PCB according to the following procedure. after elapsing 3 minutes from power OFF. 1) Replace the PCB 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.
  • Page 51 '21 • PAC-SM-398 (c) Outdoor inverter PCB replacement procedure Precautions for Safety • Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: WARNING Indicates an imminently hazardous situation which will result in death or serious injury if proper safety procedures and instructions are not adhered to.
  • Page 52 '21 • PAC-SM-398 Models FDCA160, 200VSA PCB012D057A Replace the inverter PCB (Fig.1) according to the following procedure. 1) Replace the PCB after elapsing 3 minutes from power OFF. In the situation that harnesses are connected to control PCB, be sure to measure voltage (DC) of two places ((A), (B)) and check that the voltage is discharged sufficiently.
  • Page 53 '21 • PAC-SM-398 ※：Presence and shape of electric component may vary according to a model. Remove screws. (4 places) (C) Voltage measurement point of power source for inverter : DM (+) – DM (–) Inverter PCB Snubber capacitor Control PCB Remove harnesses from bands.
  • Page 54 '21 • PAC-SM-398 (d) Outdoor DRED PCB replacement procedure (Models FDCA-VSA) PCA012D062 Precautions for Safety ・Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: WARNING Indicates an imminently hazardous situation which will result in death or serious ！...
  • Page 55 '21 • PAC-SM-398 Target DRED PCB Target DRED PCB ● FDCA160, 200VSA Target DRED PCB Fig.2 PCB arrangement points...
  • Page 56 DIP switch setting list (Outdoor unit) '21 • PAC-SM-398 Models FDCA160, 200VSA DIP switch setting list (Outdoor unit) 1) Control PCB Switch Description Default setting Remark Pump down operation Normal*/Pump down Normal JSW1-1 JSW1-2 Model selection As per model See table 1. JSW1-3 JSW1-4 Defrost condition...
  • Page 57 '21 • PAC-SM-398 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 58 '21 • PAC-SM-398 (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 59 '21 • PAC-SM-398 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 60 '21 • PAC-SM-398 (7) Inverter checker for diagnosis of inverter output Models FDCA160, 200VSA ●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 61 '21 • PAC-SM-398 Outdoor unit control failure diagnosis circuit diagram Models FDCA160VSA, 200VSA...

  • Page 62: Table Of Contents

    '21 • PAC-SM-398 1.2.2 Troubleshooting flow (1) List of troubles Models FDCA160, 200VSA Remote control display Description of trouble Reference page None Operates but does not cool. None Operates but does not heat. None Earth leakage breaker activated None Excessive noise/vibration (1/3) None Excessive noise/vibration (2/3) None...

  • Page 63: Operates But Does Not Cool

    '21 • PAC-SM-398 (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 64: Operates But Does Not Heat

    '21 • PAC-SM-398 Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not heat. Remote control: 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 65: Earth Leakage Breaker Activated

    '21 • PAC-SM-398 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 96.

  • Page 66: Excessive Noise/Vibration

    '21 • PAC-SM-398 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 67: Excessive Noise/Vibration

    '21 • PAC-SM-398 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 68: Excessive Noise/Vibration

    '21 • PAC-SM-398 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 69: Power Source System Error (Power Source To Remote Control)

    '21 • PAC-SM-398 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 All models Diagnosis Countermeasure AC220/240V detected between on the terminal block...
  • Page 70 '21 • PAC-SM-398 Green Content Error code Power source system error Keeps flashing 3-time flash Indoor None Remote control: (Power source to remote control) Keeps flashing 2-time flash 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 71: Inspect I/U

    '21 • PAC-SM-398 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 72: Inspect I/U (Connection Of 3 Units Or More Remote Controls) (Fdua200Vh Only)

    '21 • PAC-SM-398 INSPECT I/U Green Content Error code (Connection of 3 units or more remote controls) Keeps flashing Stays OFF Indoor INSPECT I/U Remote control: (FDUA200VH only) Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model FDUA200VH only Diagnosis Countermeasure Are more than Reduce to 2 units or less.

  • Page 73: Communication Error At Initial Operation

    '21 • PAC-SM-398 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 74 '21 • PAC-SM-398 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 75: No Display

    '21 • PAC-SM-398 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 76 '21 • PAC-SM-398 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 77: E5 Communication Error During Operation

    '21 • PAC-SM-398 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 78: Indoor Heat Exchanger Temperature Sensor Anomaly

    '21 • PAC-SM-398 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 79: Return Air Temperature Sensor Anomaly

    '21 • PAC-SM-398 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 80: Heating Overload Operation

    '21 • PAC-SM-398 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 81: Drain Trouble

    '21 • PAC-SM-398 Green Content Error code Drain trouble Keeps flashing 1-time flash Indoor Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the error data in the remote control. Is there any overflow? Is DC12V at CNI connector? Check float switch.

  • Page 82: E10 Excessive Number Of Connected Indoor Units (More Than 17 Units) By Controlling With One Remote Control

    '21 • PAC-SM-398 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 FDUA200VH only Diagnosis Countermeasure Are more than 17...

  • Page 83: Address Setting Error Of Indoor Units

    '21 • PAC-SM-398 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 84 '21 • PAC-SM-398 Green Content Indoor DC fan motor Error code Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: anomaly (1/2) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...
  • Page 85 '21 • PAC-SM-398 Green Content Indoor DC fan motor Error code Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: anomaly (2/2) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...

  • Page 86: E19 Indoor Unit Operation Check, Drain Pump Motor Check Setting Error

    '21 • PAC-SM-398 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 87: Indoor Dc Fan Motor Rotation Speed Anomaly

    '21 • PAC-SM-398 Green Content Indoor DC fan motor Error code Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: rotation speed anomaly (1/2) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1.
  • Page 88 '21 • PAC-SM-398 Green Content Indoor DC fan motor Error code Keeps flashing 1 ( 2 ) -time flash Indoor Remote control: rotation speed anomaly (2/2) Keeps flashing Stays OFF Outdoor Note (1) Value in ( 　 ) is for FMi2. 5. Troubleshooting 1.
  • Page 89 '21 • PAC-SM-398 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 90 '21 • PAC-SM-398 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 91 '21 • PAC-SM-398 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 All models Diagnosis Countermeasure * For the characteristics of discharge...
  • Page 92 '21 • PAC-SM-398 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 93 '21 • PAC-SM-398 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 94 '21 • PAC-SM-398 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 95 '21 • PAC-SM-398 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 96 '21 • PAC-SM-398 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 97 '21 • PAC-SM-398 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 98 '21 • PAC-SM-398 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 (or...
  • Page 99 '21 • PAC-SM-398 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 100 '21 • PAC-SM-398 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 101 '21 • PAC-SM-398 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 102 '21 • PAC-SM-398 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 103 '21 • PAC-SM-398 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 104 '21 • PAC-SM-398 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 105 '21 • PAC-SM-398 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 106 '21 • PAC-SM-398 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 107 '21 • PAC-SM-398 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 108 '21 • PAC-SM-398 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 109 '21 • PAC-SM-398 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 110 '21 • PAC-SM-398 1.3 ELECTRICAL WIRING (1) Indoor units Model FDUA160VH PJG000Z758...
  • Page 111 '21 • PAC-SM-398 Model FDUA200VH PJG000Z777...
  • Page 112 '21 • PAC-SM-398 (2) Outdoor units Models FDCA160VSA, 200VSA PCB003Z866...
  • Page 113 '21 • PAC-SM-398 1.4 PIPING SYSTEM PIPING SYSTEM Model 160 Indoor unit Outdoor unit Cooling cycle Heating cycle Check joint 4-way valve Temperature sensor (Tho-A) Muffler Gas line Service valve (Flare connecting) Check joint Lower pressure Temperature sensor Check (Heat exchanger) sensor valve High pressure...
  • Page 114 '21 • PAC-SM-398 Preset point of the protective devices Equipped Parts name Mark 160, 200 model unit Temperature sensor ON 63˚C (for protection over- Th i -R OFF 56˚C loading in heating) Indoor unit ON 1.0˚C Temperature sensor Th i -R OFF 10˚C (for frost prevention) Temperature sensor ON 65˚C Outdoor unit...
  • Page 115 '21 • PAC-SM-398 2. ZONE CONTROL INSTALLATION MANUAL (FDUA160VH only) ① b) In the case of 3 zones System outline Please refer to the following information to design your ducted air-conditioning system. Master Zone Attention Remote Control Relay Parts Ducted indoor unit •...
  • Page 116 '21 • PAC-SM-398 '19 • PAC-SM-316 ⑤  ④ ④ Method to set the large air volume of FDUA Wirings Wirings (FDUA160 only) a) Connecting of indoor unit and relay parts a) Connecting of indoor unit and relay parts • Connect the accessory wiring to CNJ on the indoor control board. •...
  • Page 117 '21 • PAC-SM-398 ZONE CONTROL INITIAL SETTING ⑥ Initial setting (Contiued) ⑥ Select Zone settings ⑥ Initial setting Performs zone settings. When using zone control, configure the following settings from the zone remote control. (1) Zone setting ① Tap Menu button on the top screen.
  • Page 118 '21 • PAC-SM-398 ⑥ ⑥ Initial setting (Contiued) Initial setting (Contiued) Resets all zone settings. The zone name input screen is displayed. The zone name can be set with up to 8 If this is acceptable, tap the button. 2-byte letters (16 1-byte letters). You can enter alphanumeric or Cyrillic.
  • Page 119 '21 • PAC-SM-398 Troubleshooting Symptoms Assumed Causes Solutions Faulty damper motor Replace damper motor. Relay and damper motor Check wiring, ensure zone opens and closes ∙No air flow incorrectly wired. correctly. ∙  I f there is no common zone, Fuse blown Investigate cause and replace blown fuse.
  • Page 120 '21 • PAC-SM-398 Names and functions of sections on the R/C (Display) ＊All icons are shown for the sake of explanation. ② Icon display TOP screen ③ Menu button ① Clock, Room name display ⑤ Change set temp button ④ Change operation ⑥...
  • Page 121 '21 • PAC-SM-398 Zone ON/OFF operation (for zone control) The "Zones" button appears on the TOP screen when zone settings were performed by Menu ⇒ Service setting ⇒ Installation setting ⇒ Duct unit setting ⇒ Zone setting . Tap the Zones button. Sets ON / OFF (OPEN/CLOSE) for each zone.
  • Page 122 '21 • PAC-SM-398 Tap the zone you want to set a zone name for. The zone name input screen is displayed. The zone name can be set with up to 8 2-byte letters (16 1-byte letters). You can enter alphanumeric or Cyrillic. Tap the Back or Next button to display next character group.
  • Page 123 '21 • PAC-SM-398 ■Set ON timer by hour When the set time elapses, the air conditioner starts. ⇒ Timer ⇒ Tap the Menu button on the TOP screen and select Useful functions Set ON timer by hour . The Set ON timer by hour setting Set the following operating conditions.
  • Page 124 '21 • PAC-SM-398 ■Set OFF timer by hour When the set time elapses, the air-conditioner stops. ⇒ Timer ⇒ Tap the Menu button on the TOP screen and select Useful functions Set OFF timer by hour The Set OFF timer by hour setting screen is displayed. ▲...
  • Page 125 '21 • PAC-SM-398 Advice Warming up · o l c t t r i t a t t r i t a s a l i t a starts the operation 5 to 60 minutes earlier. · l r a r e i t r a i t a...
  • Page 126 '21 • PAC-SM-398 ■Set OFF timer by clock Stops the operation of the unit at the set clock time. ⇒ Timer ⇒ Tap the Menu button on the TOP screen and select Useful functions Set OFF timer by clock The Set OFF timer by clock setting screen is displayed. ▲...
  • Page 127 '21 • PAC-SM-398 Weekly timer You can set four on timer and off timer operations for each day of the week. Advice · The Clock setting must be made when the weekly timer is used. · The weekly timer can be set from the main R/C only. ⇒...
  • Page 128 '21 • PAC-SM-398 Set the following operating conditions. Tap a desired operation mode. ① Warming up ON/OFF When the No setting button is Weekly timer Weekly timer (Operation starts 5 to 60 minutes Details tapped, it operates with the same Cooling earlier in order to warm up the room Cooling...
  • Page 129 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.

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