Mitsubishi Heavy Industries KXZ Series Technical Manual
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Mitsubishi Heavy Industries KXZ Series Technical Manual

Vrf inverter multi-system air-conditioners indoor unit
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Manual No. '15
KX-T-235
•
TECHNICAL MANUAL
VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS
(INDOOR UNIT)
KXZ series
Ceiling suspended type
FDE36KXZE1
45KXZE1
56KXZE1
71KXZE1
112KXZE1
140KXZE1
Note:
•
(1) Regarding the outdoor unit KXZ series, refer to the No.'14
KX-DB-
199, No.'14
KX-DB-201,
•
•
No.'14
KX-DB-203, No.'14
KX-DB-207 No.'14
,
KX-DB-220
and
No.
'09
KXR-DB-129
.
•
•
•
•

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Summary of Contents for Mitsubishi Heavy Industries KXZ Series

  • Page 1 (INDOOR UNIT) KXZ series Ceiling suspended type FDE36KXZE1 45KXZE1 56KXZE1 71KXZE1 112KXZE1 140KXZE1 Note: • (1) Regarding the outdoor unit KXZ series, refer to the No.'14 KX-DB- 199, No.'14 KX-DB-201, • • No.'14 KX-DB-203, No.'14 KX-DB-207 No.'14 KX-DB-220 KXR-DB-129 •...

  • Page 2: Table Of Contents

    10.2 Simple wired remote control (RCH-E3) ..............104 ■ How to read the model name Example: FDE 36 Series No. Application power source...See the specifications Multi KXZ series Nominal capacity (Nominal cooling capacity : 3.6kW) Model name〔Ceiling suspended type〕 – –...
  • Page 3 FDE36KXZE1 FDE45KXZE1 FDE56KXZE1 FDE71KXZE1 220-240V　50Hz / 220V　60Hz 220-240V　50Hz / 220V　60Hz 220-240V　50Hz / 220V　60Hz 220-240V　50Hz / 220V　60Hz Cooling 0.05 0.05 0.05 0.07 Heating 0.05 0.05 0.05 0.07 Cooling 0.45 0.45 0.45 0.65 Heating 0.45 0.45 0.45 0.65 Sound pressure level P-Hi : 46 Hi : 38 Me : 31 Lo : 26 P-Hi : 46 Hi : 38 Me : 36 Lo : 31 P-Hi : 46 Hi : 38 Me : 36 Lo : 31 P-Hi : 47 Hi : 39 Me : 37 Lo : 32...
  • Page 4 FDE112KXZE1 FDE140KXZE1 220-240V　50Hz / 220V　60Hz 220-240V　50Hz / 220V　60Hz Cooling 0.10 0.13 Heating 0.10 0.13 Cooling 0.90 1.20 Heating 0.90 1.20 Sound pressure level P-Hi : 45 Hi : 42 Me : 38 Lo : 34 P-Hi : 48 Hi : 43 Me : 40 Lo : 35 Plaster white Plaster white Electronic expansion valve...

  • Page 8: Wired Remote Control (Option Parts)

    '15 • KX-T-235 Wired remote control (option parts) Model RC-EX1A Installation space Dimensions (Viewed from front) Exterior appearance Pearl White (Munsell color) (N8.5) near equivalent R/C cable：0.3mm × 2-core RoHS Adapted to directive PJZ000Z297 – –...
  • Page 9 '15 • KX-T-235 Model RC-E5 Wiring outlet Cut off the upper thin part of remote control lower case with a nipper or knife, and grind burrs with a file etc. Exposed mounting In case of pulling out In case of pulling out from upper left from center 0.3mm...

  • Page 10: Electrical Wiring

    Control PCB Remote control ThI-R1 t° t° Signal line （ Shielded cord） ThI-R2 CNK1 t° Signal line Connector for branching between indoor units controller of heat recovery 3-pipe systems t° ThI-R3 Power source （Single-phase） Power PCB CNW0 220 - 240V 50Hz/ LED・2 LED・3 220V  60Hz YE／GN...

  • Page 11: Noise Level

    '15 • KX-T-235 4. NOISE LEVEL Notes(1) The data are based on the following conditions. Ambient air temperature: Indoor unit 27℃WB. Outdoor unit 35℃DB. (2) The data in the chart are measured in an anechoic room. Unit (3) The noise levels measured in the field are usually higher than the data because of reflection. Measured based on JIS B 8616 (1) Indoor units Mike position...

  • Page 12: Temperature And Velocity Distribution

    '15 • KX-T-235 5. TEMPERATURE AND VELOCITY DISTRIBUTION Indoor temperature Cooling °CDB/°CWB, Heating 0°CDB 〔 Note 〕 These figures represent the typical main range of temperature and velocity distribution at the center of air outlet within the published conditions. In the actual installation, they may differ from the typical figures under the influence of air temperature conditions, ceiling height, operation conditions and obstacles. Models FDE36,45,56KXZE1 Cooling Air flow：...
  • Page 13 '15 • KX-T-235 Model FDE71KXZE1 Cooling Air flow： P-Hi Temperature distribution Louver position (℃) 5° Velocity distribution (m/sec) Heating Air flow： P-Hi Temperature distribution Louver position (℃) 45° Velocity distribution (m/sec) – –...
  • Page 14 '15 • KX-T-235 Model FDE112KXZE1 Cooling Air flow： P-Hi Temperature distribution Louver position (℃) 5° Velocity distribution (m/sec) Heating Air flow： P-Hi Temperature distribution Louver position (℃) 45° 29 26 Velocity distribution (m/sec) – –...
  • Page 15 '15 • KX-T-235 Model FDE140KXZE1 Cooling Air flow： P-Hi Temperature distribution Louver position (℃) 5° Velocity distribution (m/sec) Heating Air flow： P-Hi Temperature distribution Louver position (℃) 45° Velocity distribution (m/sec) – –...

  • Page 16: Capacity Tables

    1.7 SELECTION CHART Correct the cooling and heating capacity in accordance with the operating conditions. The net cooling and heating capacity can be '15 • KX-T-235 obtained in the following way. 6. CAPACITY TABLES Net capacity = Capacity shown in the capacity tables (1.7.1) × Correction factors shown in the table (1.7.2) (1.7.3) (1.7.4). Caution: In case that the cooling operation during low outdoor air temperature below -5°C is expected, install the outdoor unit where it is not influenced by natural wind.
  • Page 17 '15 • KX-T-235 (kW) (kW) FDE45KXZE1 Model Cooling mode Heating mode Indoor air temperature Outdoor air Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature Air flow Air flow temperature air temp. 14 ℃WB 16 ℃WB 18 ℃WB...
  • Page 18 '15 • KX-T-235 (kW) (kW) FDE56KXZE1 Model Cooling mode Heating mode Indoor air temperature Outdoor air Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature Air flow temperature Air flow air temp. 14 ℃WB 16 ℃WB 18 ℃WB...
  • Page 19 '15 • KX-T-235 (kW) (kW) FDE71KXZE1 Model Cooling mode Heating mode Indoor air temperature Outdoor Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature Air flow Air flow temperature air temp. 14 ℃WB 16 ℃WB 18 ℃WB...
  • Page 20 '15 • KX-T-235 (kW) (kW) FDE112KXZE1 Model Cooling mode Heating mode Indoor air temperature Outdoor Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature Air flow Air flow temperature air temp. 14 ℃WB 16 ℃WB 18 ℃WB...
  • Page 21 '15 • KX-T-235 (kW) (kW) FDE140KXZE1 Model Cooling mode Heating mode Indoor air temperature Outdoor Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature Air flow Air flow temperature air temp. 14 ℃WB 16 ℃WB 18 ℃WB...

  • Page 22: Application Data

    '15 • KX-T-235 7. APPLICATION DATA INSTALLATION MANUAL FOR CEILING SUSPENDED PFA012D628 7.1 lnstallation of indoor unit TYPE (FDE) ①Bef This manual is for the installation of an indoor unit. CAUTION Install c For electrical wiring work (Indoor), refer to page 25. For remote control installation, Con rm refer to page 29.
  • Page 23 '15 • KX-T-235 A012D628 ①Before installation ③Preparation before installation (continued) ※Pipes can be taken out in 3 directions (rear, right or Install correctly according to the installation manual. top). (mm) Con rm the following points: Series type ・ Cut out holes using nippers, etc. Unit type/Power source speci cation Pipes/Wires/Small parts Accessory items...
  • Page 24 '15 • KX-T-235 ⑤Refrigerant pipe ⑥Drain pipe ⑦Wiri ●The drain pipes may pull out either from back, right or left side. Caution FDE (sm ●Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product Caution or a nut compatible with JIS B 8607, Class 2.
  • Page 25 '15 • KX-T-235 ⑪How to set the airflow direction ⑦Wiring-out position and wiring connection (continued) Clip It is possible to change the movable range of the louver on the air outlet from FDE (small) the wired remote control. Once the top and bottom position is set, the louver ain properly.

  • Page 26: Electric Wiring Work Instruction

    '15 • KX-T-235 PSC012D001 7.2 Electric wiring work instruction ELECTRIC WIRING WORK INSTRUCTION Electrical Wiring Connection Addre ① ② Electrical wiring work must be performed by an electrician qualified by a local power provider according to ●Electrical wiring work must be performed by an electrician an qualified by a local power the electrical installation technical standards and interior wiring regulations applicable to the installation site.
  • Page 27 '15 • KX-T-235 2D001 ② Address setting ③ Remote Control, Wiring and functions (continued) cal power Address setting is done by (1) Manual address setting or (2) Automatic address setting. Master/slave setting when more than one remote control unit are used following In the case of (2) "Automatic address setting", it is possible to change address setting by wired remote control after once complete setting.
  • Page 28 '15 • KX-T-235 ⑥ Operation and setting from remote controller ⑥ Operati A: Refer to the instruction manual for RC-EX series. Setting B: Refer to the installation manual for RC-EX series. C: Loading a utility software vie Internet 11． Administ ○: Nearly same function setting and operations are possible.
  • Page 29 '15 • KX-T-235 ⑥ Operation and setting from remote control (continued) RC-EX RC-E4 Setting & display item Description series RC-E5 Ａ  11． Administrator settings [Administrator password] ・ Enable/Disable setting of operation can be set. [On/Off] [Change set temp.] [Change operation mode] [Change air flow direction] 1 Enable/Disable setting [Individual flap control setting][Fan speed] [High power operation] [Energy-saving operation] [Timer settings] [Weekly timer setting] Ａ ...

  • Page 30: Installation Of Wired Remote Control (Option Parts)

    '15 • KX-T-235 7.3 Installation of wired remote control (option parts) PJZ012D077 (1) Model RC-EX1A eco touch REMOTE CONTROL RC-EX1A INSTALLATION MANUAL – –...
  • Page 31 '15 • KX-T-235 1 . Safety precautions This installation manual describes the installation methods and precautions related to the remote control. Use this manual together with the user’s manuals for the indoor unit, outdoor unit and other option equipment. Please read this manual carefully before starting the installation work to install the unit properly.
  • Page 32 '15 • KX-T-235 When installing the unit at a hospital, telecommunication facility, etc., take measures to suppress electric noises. It could cause malfunction or break-down due to hazardous effects on the inverter, private power generator, high frequency medical equipment, radio communication equipment, etc. The influences transmitted from the remote control to medical or communication equipment could disrupt medical activities, video broadcasting or cause noise interference.
  • Page 33 '15 • KX-T-235 2 . Accessories & prepare on site R/C main unit, wood screw (ø3.5 x 16) 2 pcs Accessories User’s Manual, Installation Manual Parts procured at site When the cable length is longer than Item name Q’ty Remark 100 m, the max size for wires used Switch box in the R/C case is 0.5 mm...
  • Page 34 '15 • KX-T-235 Request Be sure not to install R/C at a place where temperatures around the installation surface of R/C may differ largely from actual room temperature. Difference between detected temperature and actual room temperature could cause troubles. The correction for detected temperature by the R/C cannot offset such temperature difference because it corrects the detected temperatures itself.
  • Page 35 '15 • KX-T-235 ④   W hen wires are passed through the bottom case, fix the bottom case at 2 places on the switch box. Upper side Upper side Switch box Switch box for 1 pc for 2 pcs Cut out the thin wall part at the screw mounting Bottom case...
  • Page 36 '15 • KX-T-235 If the hole is cut too large, moisture, dust or insects may enter. Seal gaps with putty or the like. ④     Fix the bottom R/C case on a flat surface with wood screws. ⑤   I n case of the upper center, p a s s t h e w i r i n g b e h i n d 120mm...
  • Page 37 '15 • KX-T-235 Note: Connection to personal computer It can be set from a personal computer via the USB port (mini-B). Connect after removing the cover for USB port of upper case. Replace the cover after use. If dust, insect, etc. enters, it could cause electric shocks or breakdown.

  • Page 38: Model Rc-E5

    '15 • KX-T-235 PJA012D730 (2) Model RC-E5 Installation manual for wired remote controller Connect the remote cont terminal block. Connect the terminal of r Read together with indoor unit's installation manual. with the terminal of indoo (X and Y are no polarity) WARNING Wiring route is as shown Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the...
  • Page 39 '15 • KX-T-235 ote controller Connect the remote control cord to the Sheath Sheath The range of temperature settin terminal block. When shipped, the range of set te Connect the terminal of remote control (X,Y) Upper case Upper case Board Board Heating : 16 ~ 30˚C (55 ~ 86˚F with the terminal of indoor unit (X,Y).
  • Page 40 '15 • KX-T-235 PJA012D730 Sheath The range of temperature setting When shipped, the range of set temperature differs depending on the operation mode as below. Upper case Board Heating : 16 ~ 30˚C (55 ~ 86˚F) Except heating (cooling, fan, dry, automatic) : 18 ~ 30˚C (62 ~ 86˚F) Upper limit and lower limit of set temperature can be changed with remote control.
  • Page 41 '15 • KX-T-235 The functional setting The initial function setting for typical using is performed automatically by the indoor unit connected, when remote Note 1: The initial setting marked “ ” is decided by connected indoor and outdoor unit, and is automatically defined as following table. control and indoor unit are connected.
  • Page 42 '15 • KX-T-235 PJA012D730 omatically defined as following table. Operation message How to set function ndoor unit. Function description: Function No. Stop air-conditioner and press (SET) (MODE) setting description: " mode buttons at the same time for over three seconds, and the ep of air flow setting "FUNCTION SET "...

  • Page 43: Outline Of Operation Control By Mycrocomputer

    '15 • KX-T-235 8. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 8.1 Remote control (option parts) Wired remote control Model RC-EX1A All icons are shown for the sake of explanation. ⑦ Clock, R/C name display ⑤ LCD display (With backlight) A tap on the LCD lights the backlight. Displays the current time and The backlight turns off automatically if there is no the name of R/C...
  • Page 44 '15 • KX-T-235 Wired remote control 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 45 '15 • KX-T-235 Wireless remote control Indication section Indicates set temperature. Indicates the status of swing louver. Indicates selected operation with Indicates the selected airflow volume Indicates for two seconds when FILTER button is pressed. Indicates when ON-TIMER is set. Indicates when OFF-TIMER is set.

  • Page 46: Operation Control Function By The Wired Remote Control

    '15 • KX-T-235 (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. 8.2 Operation control function by the wired remote control (c) When the operation mode is selected, the display returns to the TOP screen.
  • Page 47 '15 • KX-T-235 • Since it memorizes always the condition of remote control, it starts operation according to the contents of memory no sooner than normal state is recovered after the power failure. Although the auto swing stop position and the timer mode are cancelled, the weekly timer setting is restored with the holiday setting for all weekdays.
  • Page 48 '15 • KX-T-235 Model RC-E5 Switching sequence of the operation mode switches of remote control 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. Power failure compensation function (Electric power source failure) •...

  • Page 49: Operation Control Function By The Indoor Control

    '15 • KX-T-235 8.3 Operation control function by the indoor control (1) Auto operation (Heat recovery 3-pipe combintion systems only) (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 indoor air temperature.
  • Page 50 '15 • KX-T-235 (ii)  R egardless 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". )  I n case of "Room temperature/Cooling < Indoor return air temperature" and "Outdoor temperature/Cooling < Outdoor air tem- perature"...
  • Page 51 '15 • KX-T-235 Timer operation (a) RC-EX1A 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 52 '15 • KX-T-235 (b) RC-E5 Sleep timer Set the duration of time from the present to the time to turn off the air-conditioner. It can be selected from 10 steps in the range from “OFF 1 hour later” to “OFF 10 hours later”. After the sleep timer setting, the remaining time is displayed with progress of time in the unit of hour.
  • Page 53 '15 • KX-T-235 Once the fan motor is changed from OFF to ON during the thermostat ON, the indoor fan motor is not turned OFF even if the heat exchanger thermistor detects lower than 25°C. Note (1) When the defrost control signal is received, it complies with the fan control during defrosting. Once the hot start is completed, it will not restart even if the temperature on the heat exchanger thermistor drops.
  • Page 54 '15 • KX-T-235 (b) RC-E5 (i) Louver control Press the “LOUVER” button to operate the swing louver when the air-conditioner is operating. “SWING ” is displayed for 3 seconds and then the swing louver moves up and down continuously. To fix the swing louver at a position, press one time the “LOUVER” button while the swing louver is moving so that four stop positions are displayed one after another per second.
  • Page 55 '15 • KX-T-235 (c) Fan control during heating thermostat OFF (i) Following fan controls during the heating thermostat OFF can be selected with the indoor function setting of the wired remote control. ① Low fanspeed (Factory default), ② Set fan speed, ③ Intermittence, ④ Fan OFF (ii) When the “Low fan speed (Factory default)”...
  • Page 56 '15 • KX-T-235 (10) Filter sign As the operation time (Total ON time of ON/OFF switch) accumulates to 180 hours , “FILTER CLEANING” is displayed on the remote control. (This is displayed when the unit is in trouble and under the centralized control, regardless of ON/OFF) Note (1) Time setting for the filter sign can be made as shown below using the indoor function of wired remote control “FILTER SIGN SET”.
  • Page 57 '15 • KX-T-235 (14) Anomalous fan motor After starting the fan motor, if the fan motor speed is 200min or less is detected for 30 seconds continuously and 4 times within 60 minutes, then fan motor stops with the anomalous stop (E16). (b) If the fan motor fails to reach at -50 min less than the required speed, it stops with the anomalous stop (E20).
  • Page 58 '15 • KX-T-235 (a) Output for external control (remote display) Following output connectors (CnT) are provided on the indoor control PCB for monitoring operation status. ① Operation output: Outputs DC12V signal for driving relay during operation ② Heating output: Outputs DC12V signal for driving relay during heating operation ③...
  • Page 59 '15 • KX-T-235 (18) Operation permission/prohibition (In case of adopting card key switches or commercially available timers) When the indoor function setting of wired remote control for “Operation permission/prohibition” is changed from “Invalid (Factory default)” to “ Valid”, following control becomes effective. ・...
  • Page 60 '15 • KX-T-235 (b) In case of CnT ③ Operation permission/prohibition level + CnTA ③ Operation permission/prohibition level Operation permission Operation permission Operation Operation permission permission prohibition setting Operation CnTA Operation permission permission Operation Operation permission/ permission prohibition setting Operation Operation permission permission Operation permission/...
  • Page 61 '15 • KX-T-235 (d) If the cooling/heating selection signal is given by the external input, the operation mode is transmitted to the remote control. ■ Selection of cooling/heating external input function External input selection Operation External input method External terminal input (CnT or CnTA) Cooling zone Heating zone...
  • Page 62 '15 • KX-T-235 (c) Control of the branching control when the heating/cooling is switched with the CnT2 output ① 20S control (CnT2-2: XB1) ② SVH control (CnT2-3: XB2) ③ SVG control (CnT2-4: XB3) ④ SVE control (CnT2-5: XB4) • Combination of XB1 – XB4 outputs (The branching control is controlled in the state of operations (I) – (V).) State of operation (I) Cooling <High pressure...
  • Page 63 '15 • KX-T-235 (24) High power operation (RC-EX1A only) It operates at with the setting temperature fixed at 16°C for cooling, 30°C for heating and maximum indoor fan speed for 15 minutes maximum. (25) Energy-saving operation (RC-EX1A only) It operates with the setting temperature fixed at 28°C for cooling, 22°C for heating or 25°C for auto. (Maximum capacity is restricted at 80%.) (26) Warm-up control (RC-EX1A only) Operation will be started 5 to 60 minutes before use according to the forecast made by the microcomputer which calculates...
  • Page 64 '15 • KX-T-235 (32) Indoor unit overload alarm (RC-EX1A only) If the following condition is satisfied at 30 minutes after starting operation, RC-EX1A shows maintenance code "M07" and the signal is transmitted to the external output (CnT-5). (a) Receipt of the signal by the external output is indicated by lighting an LED or other prepared on site. ・...

  • Page 65: System Troubleshooting Procedure

    '15 • KX-T-235 9. SYSTEM TROUBLESHOOTING PROCEDURE 9.1 Basics of troubleshooting Basic troubleshooting is to check/analyze/save data by connecting the Mente PC. Whenever arriving at the site, always connect the Mente PC before starting work. Method of error data analysis (Basic procedure) •...

  • Page 66: Contents Of Troubleshooting

    '15 • KX-T-235 '14 • KX-T-222 9.2 Contents of troubleshooting 9.2 Contents of troubleshooting (1) List of inspection displays (indoor units) (a) List of inspection displays (indoor units) Remote control Name of inspection Classification Page error code None Operates but does not cool System error System error None...
  • Page 67 '15 • KX-T-235 (2) Troubleshooting Green Error code Content Keeps flashing Stays OFF None Indoor Operates but does not cool 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 suction air of indoor unit.
  • Page 68 '15 • KX-T-235 Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not heat Remote control: Keeps flashing Stays OFF Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure Check the indoor fan operation. Check the temperature difference between return and suction air of indoor unit.
  • Page 69 '15 • KX-T-235 Green Content Error code – – Indoor None Excessive noise/vibration (1/3) Remote control: – – Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure If excessive noise/vibration persists when sufficient time has elapsed after Does noise/ vibration occur during stopping the unit, it is or soon after stopping...
  • Page 70 '15 • KX-T-235 Green Content Error code – – Indoor None Excessive noise/vibration (2/3) Remote control: – – Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure From previous page Rearrange the piping to Are the pipes avoid contact with the contacting with the casing.
  • Page 71 '15 • KX-T-235 Green Content Error code – – Indoor None Excessive noise/vibration (3/3) Remote control: – – Outdoor . Troubleshooting . Applicable model All models 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...
  • Page 72 '15 • KX-T-235 Green Content Error code Louver motor failure Keeps flashing Stays OFF Indoor None Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure � Check at the indoor unit side. Operate after waiting for more than 1 minute.
  • Page 73 '15 • KX-T-235 Green Power source system anomaly Content Error code Stays OFF Stays OFF Indoor None Remote control: (Power source to indoor unit PCB) Stays OFF 2-time flash Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure AC 220-240V detected between L-N on the indoor terminal block?
  • Page 74 '15 • KX-T-235 Green Content Error code Power source system error Stays OFF Keeps lighting Indoor None Remote control: (Power source to remote control) Stays OFF Keeps lighting Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure Isn't there any Correct it.
  • Page 75 '15 • KX-T-235 Green Content Error code WAIT Keeps flashing Stays OFF Indoor WAIT Remote control: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that is kept WAIT on displaying on the remote control for more than 2 minutes is kept on WAIT...
  • Page 76 '15 • KX-T-235 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model FDC224, 280KXZPE1 only Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse.) Isn't there any short circuit...
  • Page 77 '15 • KX-T-235 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote control after power ON.) No display on the remote control after power ON.
  • Page 78 '15 • KX-T-235 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that is kept WAIT on displaying on the remote control for more than 2 minutes is kept on WAIT...
  • Page 79 '15 • KX-T-235 Green Content Error code Stays OFF Stays OFF Indoor Remote control: WAIT WAIT Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that LED on outdoor control PCB stays OFF.) In case that LED on outdoor control PCB stays OFF.
  • Page 80 '15 • KX-T-235 Green Content Error code Stays OFF Stays OFF Indoor Remote control: WAIT WAIT Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDC224, 280KXZPE1 only Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse.) From previous page.
  • Page 81 '15 • KX-T-235 Green Content Error code Stays OFF Stays OFF Indoor Remote control: [No display] [No display] Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote control after power ON.) No display on the remote control after power ON.
  • Page 82 '15 • KX-T-235 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: communication error Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is it possible to Malfunction by temporary reset normally by the power noise.
  • Page 83 '15 • KX-T-235 Green Content Error code Keeps flashing Keeps flashing Indoor Duplicated indoor unit address Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the number of Review number of connected indoor units up connected units.
  • Page 84 '15 • KX-T-235 Green Content Error code Keeps flashing 2-time flash Indoor E3/5 Outdoor unit signal line error Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E3 is a communication error that occurs when communication between indoor and outdoor units is not established at all.
  • Page 85 '15 • KX-T-235 Green Content Error code Keeps flashing *See below Indoor Communication error during operation Remote control: Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * In case that indoor red LED flashes 2 times Note (1) Check the connection (disconnection, looseness) of signal wires at outdoor terminal block.
  • Page 86 '15 • KX-T-235 Green Indoor heat exchanger Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature thermistor anomaly (ThI-R) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Insert the connector the connector of thermistor connected securely.
  • Page 87 '15 • KX-T-235 Green Indoor return air Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature thermistor anomaly (ThI-A) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely.
  • Page 88 '15 • KX-T-235 Green Content Error code Excessive number of indoor units (more than 17 units) Keeps flashing Stays OFF Indoor Remote control: by controlling one remote control Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Aren't more...
  • Page 89 '15 • KX-T-235 Green Green Content Error code Content Error code Address setting error between Address setting error between Keeps flashing Stays OFF Indoor Remote control: Remote control: master and slave indoor units Indoor master and slave indoor units Keeps flashing Keeps flashing Keeps flashing Stays OFF Outdoor 5.
  • Page 90 '15 • KX-T-235 Green Content Error code Address setting error Keeps flashing Keeps flashing Indoor Remote control: by mixed setting method Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't the automatic setting and Review address setting.
  • Page 91 '15 • KX-T-235 Green Content Error code Indoor DC fan motor anomaly Keeps flashing 1-time flash Indoor Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? 2.
  • Page 92 '15 • KX-T-235 Green Content Error code Address setting error of Keeps flashing 1-ime flash Indoor Remote control: master and slave indoor units Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the address setting for the master indoor Correct the address setting of unit correct?
  • Page 93 '15 • KX-T-235 Green Content Error code Indoor unit operation Keeps flashing 1-time flash Indoor Remote control: check mode anomaly Keeps flashing Stays OFF Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure E19 occurs when the power ON Is SW7-1 Indoor control PCB on the indoor control...
  • Page 94 '15 • KX-T-235 Green Content Error code Indoor DC fan motor rotation Keeps flashing 1-time flash Indoor Remote control: speed anomaly Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? 2.
  • Page 95 '15 • KX-T-235 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: temperature thermistor anomaly (Thc) Keeps flashing Stays OFF Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely.
  • Page 96 '15 • KX-T-235 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: Emergency stop 7-segment display: – Keeps flashing 1-time flash Outdoor . Troubleshooting . Applicable model All models Diagnosis Countermeasure Check and save the data of operating conditions. Save data for 30 minutes before stopping in Mente PC.

  • Page 97: Instruction Of How To Replace Pcb

    '14 • KX-T-222 '15 • KX-T-235 9.3 Instruction of how to replace PCB 9.3 Instruction of how to replace PCB PSB012D991B (1) 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. ●...
  • Page 98 '14 • KX-T-222 '15 • KX-T-235 (iii) Replace the PCB 1) Exchange PCB after detaching all connectors connected with the PCB. 2) Fix the pwb so as not to pinch the wirings. 3) Connect connectors to the PCB. Match the wiring connector to the connector color on the PCB and connect it. 4) Match the setting switches (include "J1") with the former PCB.

  • Page 99: Power Pcb

    '14 • KX-T-222 '15 • KX-T-235 (2) Power PCB PSB012D992 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 100: Indoor Pcb Setting

    '15 • KX-T-235 9.4 Indoor PCB setting (3) Indoor PCB setting Code Input Default setting Remarks Indoor unit address No.(Order of 10) Indoor unit address No.(Order of 1) Outdoor unit address No.(Order of 10) Outdoor unit address No.(Order of 1) SW5-1 Superlink selection Automatic*/Previous SL...

  • Page 101: Option Parts

    '15 • KX-T-235 10. OPTION PARTS PFA012D620 10.1 Wireless kit (RCN-E1R) WIRELESS REMOTE CONTROLLER INSTALLATION MANUAL PFA012D620 Notes : Following functions of FDE indoor unit series are not able to be set with this wireless remote control (RCN-E1R). 1. Flap control system WIRELESS REMOTE CONTROLLER INSTALLATION MANUAL 2.
  • Page 102 '15 • KX-T-235 ③   FDE Setting on site To change setting PCB on the receiver has the following 1. Remove the front panel. switches to set the function. 2. Remove four screws located on the back of the receiver and Default setting is shown with mark.
  • Page 103 '15 • KX-T-235 ③   FDE (continued) Wireless remote control operation distance ① Standard signal receiving range ② Points for attention in connecting a plural [Condition] number of indoor units [Condition] Illuminance at the receiver area: 360 lux. (When no lighting xture is located within 1m of Illuminance at the receiver area: 360 lux.
  • Page 104 '15 • KX-T-235 ③   FDE (continued) How to read the two-digit display A two-digit indicator (7-segment indicator) is provided on the receiver section. (1) An indication will be displayed for one hour after power on. (2) An indication appears for 3.5 seconds when a “Stop” command is sent from the wireless remote control while the air-conditioner is not running.

  • Page 105: Simple Wired Remote Control (Rch-E3)

    '15 • KX-T-235 10.2 Simple wired remote control (RCH-E PJZ000Z272 Names and functions of sections Remote control sensor ON/OFF button Operation/Inspection lamp Button to start/stop the air � conditioner During operation: Green failure: Red MODE button Use to select the mode. FAN SPEED button Button to set the fan speed TEMP button...
  • Page 106 '15 • KX-T-235 MITSUBISHI HEAVY INDUSTRIES,LTD. AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS In case of embedding wiring Remote control installation dimensions Wall surface Wiring Wiring outlet Electrical box (In case of embedding wiring) （Prepare on site） 12×7 Slot hole Installation hole 9×4.5 Slot hole （2 places）...
  • Page 107 '15 • KX-T-235 In case of exposing cord Simple Remote Control Installation Manual PJZ012D069 ⑴   M ake certain to remove a screw on the bottom surface of the remote control. Read together with indoor unit's installation manual. WARNING ⑴ ●   F asten the wiring to the terminal securely and hold the cable securely so as not to apply Screw ⑵ Remove the upper case of the remote control.
  • Page 108 '15 • KX-T-235 3. Master/ slave setting when more than one remote control are used ⑴   U p to two remote controls can be connected to one unit (or one group) of indoor unit. Switch Setting Function detail Slave remote control indoor unit SW1-1 Master remote control...
  • Page 109 connecting section. Be careful about contact failure. unit. (No polarity of X and Y) 100 - 200m･････････････････0.5mm × 2 cores Under 300m･････････････････0.75mm × 2 cores ⑹   M ount the upper case for restoring to its former state so as not to crimp the remote control cord, Under 400m･････････････････1.25mm ×...
  • Page 110 ct failure. “88” blinks on the temperature setting indicator. (blinking for approximately 2 to 10 seconds while × 2 cores data is read) Then, the return air temperature is displayed. When AIR CON NO. is pressed, return × 2 cores to the indoor unit selection display (example, “U 000”).
  • Page 111 VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS Air-Conditioning & Refrigeration Division 16-5, Konan 2-chome, Minato-ku, Tokyo, 108-8215 Japan http://www.mhi.co.jp Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Copyright MITSUBISHI HEAVY INDUSTRIES, LTD.

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