Mitsubishi Heavy Industries SRK15ZTL-W Service Manual
  1. Manuals
  2. Brands
  3. Mitsubishi Heavy Industries Manuals
  4. Air Conditioner
  5. SRK15ZTL-W
  6. Service manual

Mitsubishi Heavy Industries SRK15ZTL-W Service Manual

Inverter wall mounted type residential air-conditioners
Hide thumbs Also See for SRK15ZTL-W:
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL
INVERTER WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
Wireless LAN interface is standard equipment.
SRK15ZTL-W
20ZTL-W
25ZTL-W
35ZTL-W
50ZTL-W
Manual No.'22・SRK-SM-349

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SRK15ZTL-W and is the answer not in the manual?

Questions and answers

Related Manuals for Mitsubishi Heavy Industries SRK15ZTL-W

Summary of Contents for Mitsubishi Heavy Industries SRK15ZTL-W

  • Page 1 Manual No.'22・SRK-SM-349 SERVICE MANUAL INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR-CONDITIONERS (Split system, air to air heat pump type) Wireless LAN interface is standard equipment. SRK15ZTL-W 20ZTL-W 25ZTL-W 35ZTL-W 50ZTL-W...

  • Page 2: Table Of Contents

    '22 • SRK-SM-349 CONTENTS 1. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ......3 (1) Operation control function by wireless remote control ........3 (2) Unit ON/OFF button ..................4 (3) Auto restart function ..................4 (4) Installing two air-conditioners in the same room ...........4 (5) Selection of the annual cooling function ............5 (6) Heating only function ..................5 (7) High power operation ..................5...
  • Page 3 '22 • SRK-SM-349 3. ELECTRICAL WIRING ..................43 4. PIPING SYSTEM ....................46 5. INDOOR UNIT DISASSEMBLY METHOD ............48 6. APPLICATION OPERATION MANUAL ..............54...

  • Page 4: Outline Of Operation Control By Microcomputer

    '22 • SRK-SM-349 1. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Operation control function by wireless remote control Operation section Transmission section LCD screen Press the button of the remote control lights the backlight. ON/OFF (luminous) button The backlight can be turned on/off. Press to start operation, press again to stop.

  • Page 5: Unit On/Off Button

    '09•SRK-DB-087D '09•SRK-DB-087D '22 • SRK-SM-349 (2) Unit ON/OFF button (2) Unit ON/OFF button wireless wireless (a) Operation (a) Operation (b) Details of operation (b) Details of operation room whether to go into the COOL or HEAT modes. Function Indoor temperature Function Fan speed Flap/Louver Timer Switch Room temperature...

  • Page 6: Selection Of The Annual Cooling Function

    '22 • SRK-SM-349 (5) Selection of the annual cooling function (a) The annual cooling control is valid from factory default setting. It is possible to Jumper wire (J3) disable by cutting jumper wire (J3), or changing the setting of DIP switch (SW2- 4) on the interface kit (option) PCB if it is connected.

  • Page 7: Economy Operation

    '22 • SRK-SM-349 (8) Economy operation Pressing the HI POWER/ECONOMY button initiates a soft operation with the power suppressed in order to avoid an excessive cooling or heating. The unit operate 1.5℃ higher than the setting temperature during cooling or 2.5℃ lower than that during heating. The wireless remote control displays ECONOMY mark and the FAN SPEED display disappears.

  • Page 8: Auto Operation

    control display Left approx. 30° Left approx. 20° Center Right approx. 20° Right approx. 30° Center installation Right end installation Left approx. 30° Left approx. 20° Left approx. 10° Center Center '22 • SRK-SM-349 Center Center Right approx. 10° Right approx. 20° Right approx. 30° Left end installation (c) Swing (ii)

  • Page 9: Timer Operation

    Cooling Heating '22 • SRK-SM-349 Flap Up/down swing Louver Center (Fixed) Cooling Heating Flap Horizontal blowing (Fixed) Slant forwardl blowing (Fixed) Louver Wide (Fixed) room Operation mode Air flow direction contorol < = < = Room temp. – Setting temp. 2°C 2°C <...

  • Page 10: Silent Operation

    '22 • SRK-SM-349 (12) Silent operation When the silent operation is set, the unit operates by dropping the outdoor fan speed and the compressor speed. SRK15ZTL-W SRK20ZTL-W SRK25ZTL-W Mode1 Mode2 Mode1 Mode2 Mode1 Mode2 Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating...

  • Page 11: Display Brightness Adjustment

    '22 • SRK-SM-349 (Center installation) (Right end installation) (Left end installation) Air flow range Air flow range Air flow range (Left end installation) (Center installation) (Right end installation) (iv) Press the ON/OFF button. (15) Display brightness adjustment This function can be used when it is necessary to adjust the brightness of unit display. Brightness level Run light Timer light...

  • Page 12: Outline Of Heating Operation

    '22 • SRK-SM-349 (18)　Outline of heating operation (a) Operation of major functional components in heating mode Heating Thermostat ON Thermostat OFF Failure Compressor ON(HOT KEEP)* Indoor fan motor Outdoor fan motor (few minutes ON) 4-way valve (3 minutes ON) *When a wired remote control is connected, a signal of a wired remote control is priority. HOT KEEP, Fireplace, Interval and Stop can be established.

  • Page 13: Outline Of Cooling Operation

    − C or less for 3 minutes continuously. is as following. '22 • SRK-SM-349 In case satisfied all of following conditions. • Connect compressor speed 0 rps 10 times or more. • Satisfy 1), 2) and 3) conditions above. • Outdoor air temperature is 3°C or less. (ii) is satisfied.) (TH1)

  • Page 14: Outline Of Dehumidifying (Dry) Operation

    '22 • SRK-SM-349 '09•SRK-DB-087D (20)　Outline of dehumidifying (DRY) operation (d) Countermeasure for excessive temperature rise If it feels excessive temperature rise in heating operation, setting temperature can be lower. (a) Purpose of DRY mode The purpose is "Dehumidification", and not to control the humidity to the target condition. Indoor/outdoor unit control the operation condition to reduce the humidity, and also prevent over cooling.

  • Page 15: Protective Control Function

    '22 • SRK-SM-349 (22) Protective control function Dew prevention control (During cooling) Prevents dewing on the indoor unit Operating conditions When the following conditions have been satisfied for more than 30 minutes after starting operation Compressor’s speed is 26 (model SRK50:28) rps or higher. Detected value of humidity is 68% or higher.
  • Page 16 Keep the fan speed before Indoor fan Indoor fan frost prevention control frost prevention control Indoor heat exchanger Outdoor fan Depends on compressor speed Indoor heat exchanger Depends on compressor speed Outdoor fan temperature (°C) 4-way valve temperature (°C) 4-way valve '22 •...
  • Page 17 It checks the outdoor air temperature (TH2) once every hour to judge the operation range. Range A Compressor speed: Upper/lower limit (rps) Lower 1 Range B Upper 1 Lower 2 Upper 2 Lower 3 Upper 3 Range B Range A '22 •...
  • Page 18 '22 • SRK-SM-349 (g) Heating overload protective control Outdoor unit side • Models SRK15-35 Operating conditions When the outdoor air temperature (TH2) is 22°C or higher for 30 seconds continuously while the compressor speed other than 0 rps. Detail of operation Taking the upper limit of compressor speed at 60 rps, if the output speed obtained with the fuzzy calculation exceeds the upper limit, the upper limit value is maintained.
  • Page 19 Outdoor air temperature(°C) '22 • SRK-SM-349 Reset conditions: (h) Heating low outdoor temperature protective control • Models SRK15-35 (i)  Operating conditions When the outdoor air temperature (TH2) is lower than 2°C for 30 seconds continuously while the compressor speed is other than 0 rps  Detail of operation (ii) The lower limit compressor speed is change as shown in the figure below.
  • Page 20 '22 • SRK-SM-349 Discharge pipe temperature (˚C) 100 -110°C 90 -100°C 90 -100°C Mode Cooling Heating Model SRK15 - 35 15 rps 20 rps Lower limit speed 20 rps 20 rps SRK50 has elapsed Current safe Purpose (ii) Detail of operation (k) Current cut Purpose (ii)
  • Page 21 Rotor lock Outdoor fan motor protection '22 • SRK-SM-349 Outdoor fan motor protection Outdoor fan control at low outdoor temperature Cooling Outdoor fan control at low outdoor temperature Operating conditions Cooling (TH2) continuously Operating conditions (TH2) continuously Detail of operation Detail of operation Outdoor fan Outdoor temperature >...

  • Page 22: Maintenance Data

    '09•SRK-DB-087D '22 • SRK-SM-349 Reference Reference 2. MAINTENANCE DATA 2 TROUBLESHOOTING PROCEDURES FOR ELECTRICAL EQUIPMENT (1) Cautions (2) Items to check before troubleshooting source (3) Troubleshooting procedure (If the air-conditioner does not run at all) satisfied Important source wireless proced-...

  • Page 23: Troubleshooting Procedure (If The Air-Conditioner Runs)

    '09•SRK-DB-087D '22 • SRK-SM-349 (4) Troubleshooting procedure (If the air-conditioner runs) 24-30. 24-30.

  • Page 24: Self-Diagnosis Table

    '22 • SRK-SM-349 (5) Self-diagnosis table Wired Indoor unit display panel Description remote Cause Display (flashing) condition control TIMER of trouble display light light When a heat exchanger temperature sensor 1 wire disconnection is detected • Broken heat exchanger temperature Heat exchanger 1-time sensor 1 wire, poor connector...

  • Page 25: Service Mode (Trouble Mode Access Function)

    '09•SRK-DB-087D '22 • SRK-SM-349 (6) Service mode (Trouble mode access function) (a) Explanation of terms Explanation Term The service mode is the mode where service data are displayed by flashing of the display lights Service mode when the operations in item (b) below are performed with the indoor control. These are the contents of error displays and protective stops which occurred in the past in the air- conditioner system.
  • Page 26 '09•SRK-DB-087D '22 • SRK-SM-349 4-time flash 2-time flash. wireless mode mode Self-diagnosis data wireless mode mode Wireless remote control setting Contents of output data Operation mode Fan speed mode wireless Indicates the number of Wireless remote control setting occasions previous to the present Temperature setting the error display data are from.
  • Page 27 '09•SRK-DB-087D '22 • SRK-SM-349 (Example) Wireless remote control setting Operation Displayed data Fan speed Temperature mode mode setting Displays the reason for the stop (error code) the previous time an error was displayed. 21ºC Displays the reason for the stop (error code) 2 times previous when an error was displayed. 22ºC Cooling 23ºC...
  • Page 28 '09•SRK-DB-087D '22 • SRK-SM-349 (c) Error code, stop code table Number of flashes when in service mode Stop code Error Auto TIMER Error content Cause Occurrence conditions display recovery light light Error code (10's digit) (1's digit) Normal Error of wired remote control The wired remote control wire Y is open.
  • Page 29 '09•SRK-DB-087D '22 • SRK-SM-349 (See the example shown below.) 4-time flash 2-time flash. (d) Operation mode, Fan speed mode information tables (ii) mode mode Display pattern when Display pattern when Fan speed in service mode in service mode Operation mode mode when when there is an there is an...
  • Page 30 '09•SRK-DB-087D '22 • SRK-SM-349 (e) Temperature information (i) Room temperature sensor, indoor heat exchanger temperature sensor, outdoor air temperature sensor, outdoor heat exchanger temperature sensor Unit: °C TIMER light (1’s digit) RUN light (10’s digit) Buzzer sound (sounds for 0.1 second) (does not sound) temperature information Sensor value displayed when the error code is normal...
  • Page 31 '09•SRK-DB-087D '22 • SRK-SM-349 (ii) Discharge pipe temperature sensor Unit: °C TIMER light (1’s digit) RUN light (10’s digit) Buzzer sound (sounds for 0.1 second) (does not sound) temperature information Sensor value displayed when the error code is normal -64ºC temperature sensor data ×...
  • Page 32 '09•SRK-DB-087D '22 • SRK-SM-349 Service data record form Wireless r Operation mode Fan speed mode Wireless r Wireless r Wireless r Wireless r Wireless r wireless 25.)

  • Page 33: Inspection Procedures Corresponding To Detail Of Trouble

    '09•SRK-DB-087D '22 • SRK-SM-349 (7) Inspection procedures corresponding to detail of trouble Sensor error Broken sensor wire, connector poor connection Temperature sensor characteristics (Room air Discharge pipe temperature sensor characteristics temperature, indoor heat exchanger temperature, outdoor heat exchanger temperature, outdoor air temperature) (Short-circuit) (Short-circuit) - 10...
  • Page 34 '09•SRK-DB-087D '22 • SRK-SM-349 Current cut Compressor lock, Compressor wiring short-circuit, Compressor output is open phase, Outdoor unit PCB is faulty, Service valve is closed, EEV is faulty, Compressor faulty. Is there any short-circuit? Defective outdoor unit PCB ＊   Defective outdoor unit PCB ＊...
  • Page 35 '09•SRK-DB-087D '22 • SRK-SM-349 Overheat of compressor Gas shortage, defective discharge pipe temperature sensor temperature temperature Defective outdoor unit PCB Error of signal transmission Wiring error including power cable, defective indoor/ outdoor unit PCB ② ③ unit ② ③ unit ①...
  • Page 36 '09•SRK-DB-087D '22 • SRK-SM-349 Trouble of outdoor unit Insufficient refregerant amount, Faulty power transistor, Broken compressor wire Service valve close, Defective EEV, Defective outdoor unit PCB unit ◆  unit     defrost operation   minutes or more Notes (1) (2) Check resistance between terminals, see page 33. unit between terminals ．...
  • Page 37 '22 • SRK-SM-349 Rotor lock Defective compressor, defective outdoor unit PCB unit between terminals. See page 82. Service valve (gas side) closed, Service valve (gas side) closed operation (8) Phenomenon observed after shortcircuit, wire breakage on sensor Defective outdoor unit PCB (a) Indoor unit Phenomenon Operation...

  • Page 38: Phenomenon Observed After Short-Circuit, Wire Breakage On Sensor

    '22 • SRK-SM-349 (8) Phenomenon observed after short-circuit, wire breakage on sensor (a) Indoor unit Phenomenon Operation Sensor mode Short-circuit Disconnected wire Cooling Room air temperature sensor Heating Heat exchanger Cooling Freezing cycle system protection trips and stops the compressor. temperature sensor Heating...
  • Page 39 '22 • SRK-SM-349 (b) Indoor fan motor check procedure 1) Indoor unit PCB output check ① ④ ⑤ DC several V (–) DC 308-336V (4-6 V) Measuring Voltage range when DC15V point normal ①  −  ③ − Indoor unit PCB ⑥...

  • Page 40: How To Make Sure Of Wireless Remote Control

    Operation SW ON Measure in this section '22 • SRK-SM-349 (10) How to make sure of wireless remote control wireless wireless wireless wireless wireless wireless Simplified check method of wireless remote control   It is normal if the signal transmission section of the wireless remote control emits a whitish light at each transmission on the monitor of digital camera.

  • Page 41: Outdoor Unit Inspection Points

    '22 • SRK-SM-349 (12) Outdoor unit inspection points Models SRC15ZTL-W, 20ZTL-W, 25ZTL-W, 35ZTL-W ◆Check point of outdoor unit WARNING- HIGH VOLTAGE ◆Power source and serial signal inspection High voltage is produced in the control box. Don't touch electrical parts in the control box for 5 minutes after the : AC 220/230/240V unit is stopped.
  • Page 42 '22 • SRK-SM-349 Model SRC50ZTL-W ◆Check point of outdoor unit WARNING- HIGH VOLTAGE High voltage is produced in the control box. Don't touch ◆Power source and serial signal inspection electrical parts in the control box for 5 minutes after the : AC 220/230/240V unit is stopped.
  • Page 43 '22 • SRK-SM-349 (a) Inspection of electronic expansion valve (ii) (iii) unit (iv) • Inspection of electronic expansion valve as a separate unit Measuring point Resistance when normal (b) Outdoor fan motor check procedure unit unit source ② unit unit Measuring Voltage range when point...

  • Page 44: Electrical Wiring

    '22 • SRK-SM-349 3. ELECTRICAL WIRING (1) Indoor units Models SRK15ZTL-W, 20ZTL-W, 25ZTL-W, 35ZTL-W, 50ZTL-W RWA000Z424...
  • Page 45 '22 • SRK-SM-349 (2) Outdoor units Models SRC15ZTL-W, 20ZTL-W, 25ZTL-W, 35ZTL-W RWC000Z346...
  • Page 46 '22 • SRK-SM-349 Models SRC50ZTL-W RWC000Z347...

  • Page 47: Piping System

    '22 • SRK-SM-349 4. PIPING SYSTEM Models SRK15ZTL-W, 20ZTL-W Cooling cycle Indoor unit Outdoor unit Heating cycle temperature Flare Service valve connection (Gas) (TH2) temperature Gas pipe Muffler (TH3) (φ9.52) Check joint temperature temperature (Th1) (Th3) 4-way valve Heat exchanger...
  • Page 48 '22 • SRK-SM-349 Model SRK50ZTL-W Cooling cycle Indoor unit Outdoor unit Heating cycle temperature Flare Service valve connection (Gas) (TH2) temperature Gas pipe Muffler (TH3) (φ12.7) Check joint temperature temperature (Th1) (Th3) 4-way valve Muffler Heat exchanger Heat exchanger Compressor Humidity temperature sensor...

  • Page 49: Indoor Unit Disassembly Method

    '22 • SRK-SM-349 5. INDOOR UNIT DISASSEMBLY METHOD (1) Remove the cover. (2) Remove the screw (The following 2 places). (3) Remove the end cover.
  • Page 50 '22 • SRK-SM-349 (4) Remove nails (3 places). (5) Remove the cover. (6) Remove the control cover. (7) Remove the screw (The following 3 places). (8) Unplug the connector.
  • Page 51 '22 • SRK-SM-349 (9) Pull out control. (10) Pull out the drain. (11-1) Remove the screw (The following 3 places).
  • Page 52 '22 • SRK-SM-349 (11-2) Remove the screw (The following 3 places). (12) Pull out heat exchanger. (13) Remove the fan motor fixing screw. (14) Remove the screw (The following 2 places).
  • Page 53 '22 • SRK-SM-349 (15) The end (16) Wireless LAN interface Put your finger on the edge of the board. Bend the hooks outwards.
  • Page 54 '21 • SRK-SM-335 '22 • SRK-SM-349 SRK15–50ZTL-W Operation table Operation by Function Setting Operation by remote control Operation by Smart M-Air wired remote control (SC-BIKN2) *1 ON/OFF ○ ○ ○ ○ ○ ○ OPERATION AUTO ○ ○ ○ MODE select COOL ○...

  • Page 55: Application Operation Manual

    '22 • SRK-SM-349 6. APPLICATION OPERATION MANUAL Smart M-Air Operation Manual [EN] RKZ012A107D RKZ012A107...
  • Page 56 '22 • SRK-SM-349 Table of contents Application features ..............Manipulation modes ..............Remote operation mode ..............59 Home restricted mode ..............59 Demo mode ..................59 Preparation for use ............... Smartphone setting ................ 60 Application initial setting ..............60 Creating user account ..............
  • Page 57 '22 • SRK-SM-349 Setting Weekly Timer ..............Setting Timer by Specifying Date via Calendar ......Clear the timer set from the calendar ..........88 Displaying Electricity Bill Graph ..........(10) Updating Firmware ............... Main Menu (11) ..................Canceling demo mode ..............

  • Page 58: Application Features

    '22 • SRK-SM-349 (1) Application features You can operate the air conditioner in each room at home or from outside. • Setting operation reservation of every day of the week for each air conditioner • Checking the power consumption of an air conditioner •...
  • Page 59 '22 • SRK-SM-349 Figure 1-1 Figure 1-2 Note Depending on the function of the connected air conditioner, the following operation will not be reflected in the operation of the air conditioner. ・Left/Right, 3D AUTO, Home leave mode, Electricity Bill Graph Depending on the function of the connected air conditioner, the following operation will not appear on the screen: ・Home leave mode setting, LED ON...

  • Page 60: Manipulation Modes

    '22 • SRK-SM-349 (2) Manipulation modes • Remote operation mode This mode allows you to operate the registered air conditioner via the smartphone application when you are out of the office. Also, you can register and operate the air conditioner at home through a smartphone application.

  • Page 61: Preparation For Use

    '22 • SRK-SM-349 (3) Preparation for use • Smartphone setting Turn on Wi-Fi of your smartphone. Figure 3-1 • Application initial setting Tap the Smart M-Air icon. Figure 3-2 The application starts. Figure 3-3 - 7 -...
  • Page 62 '22 • SRK-SM-349 After startup, the “Language/Time Zone Settings” screen appears. Select a language to use in the application. Select a time zone. Select the time zone in which the air conditioner to operate via the application exists. Choose the unit of temperature. Finally, tap on the top right to complete the setting.

  • Page 63: Creating User Account

    '22 • SRK-SM-349 On the startup screen, select a mode to use. ■ Operate Air Conditioner (Remote operation mode) Tap "Operate Air conditioner" for remote control or to use optional functions such as weekly timer. → To “Creating user account” ■...
  • Page 64 '22 • SRK-SM-349 Read the text of Handling of Personal Information to the bottom and check the description. If you agree it and use the application, tap [Agree]. Figure 3-8 The “Create an Account” screen appears. Enter your e-mail address and password and tap the [Create an Account] button.
  • Page 65 '22 • SRK-SM-349 When the pop-up message “Create an Account” appears, tap [OK]. The email containing the URL of the authentication screen will be sent to the email address you entered, so please click the URL within 24 hours to complete the account creation.

  • Page 66: Registering Air Conditioner

    '22 • SRK-SM-349 • Registering air conditioner Use the “Air Conditioner List” screen to register an air conditioner to operate. Tap the "Find unregistered Air Conditioners" button to display air conditioners that are not registered on your smartphone. Figure 3-12 The air conditioner name ( locations) displays ◯...

  • Page 67: Wireless Lan Settings Of Air Conditioner

    '22 • SRK-SM-349 • Wireless LAN settings of air conditioner If your wireless LAN router does not support WPS, manually make wireless LAN settings of your air conditioner. Set the wireless LAN interface to the AP mode, and then change the Wi-Fi connection destination of your smartphone to “Smart-M-Air-XXXX”.
  • Page 68 '22 • SRK-SM-349 When you tap the network you want to set from the displayed list, the SSID appears in the "SSID" entry field at the bottom of the screen, enter "Your home Wi-Fi password" below it, and tap in the top right. If the network you want to set is not displayed in the list, enter "SSID"...

  • Page 69: Naming Air Conditioner

    '22 • SRK-SM-349 • Naming air conditioner If you want to change the name of the air conditioner displayed in the application such as the air conditioner list screen, tap "Details" to display the detailed screen of the air conditioner. Figure 3-19 Press and hold down (1 second) an air conditioner name.
  • Page 70 '22 • SRK-SM-349 Figure 3-21 Enter a new air conditioner name and tap [YES]. Figure 3-22 Figure 3-23 - 16 -...

  • Page 71: Basic Usage

    '22 • SRK-SM-349 (4) Basic usage • Starting / Stopping air conditioner operation To start or stop the operation, tap the [ON] / [OFF] button of the air conditioner that you want to operate on the “Air Conditioner List” screen. When the button color changes, switching is complete.

  • Page 72: Changing Temperature

    '22 • SRK-SM-349 To change the “Operation mode”, tap each mode from “Auto” to “Dry”. appears when the air conditioner is in clean mode. To cancel clean mode, tap appears when the weekly timer is set by this application. appears when the application is used at home where the air conditioner is set and connected to the application.

  • Page 73: Changing Fan Speed And Air Flow Direction

    '22 • SRK-SM-349 When the operation mode is Fan, Set temp. shows "-". Figure 4-5 • Changing fan speed and air flow direction to change settings. Figure 4-6 - 19 -...

  • Page 74: Switching Vacant Property Mode

    '22 • SRK-SM-349 • Switching Vacant Property Mode When Vacant Property Mode is ON, operation mode and Set temp. can be set as follows. ■ Cool : Set temp. 31°C to 33°C (at 1°C intervals) ■ Heat : Set temp. 10°C to 17°C (at 1°C intervals) Only "Cool"...

  • Page 75: Using Favourites

    '22 • SRK-SM-349 (5) Using Favourites Register your desired settings of “Set temp”, “Operation mode”, “Fan”, “Up / Down” and “Left / Right” with Favourite. Tapping the [Favourite] button changes the current settings to the registered settings. On the air conditioner details screen, press and hold down (1 sec) the [Favourite 1] or [Favourite 2] button.
  • Page 76 '22 • SRK-SM-349 When you tap the [Favourite 1] or [Favourite 2] button, the current settings are changed to the favourite settings you tapped. Figure 5-3 - 22 -...
  • Page 77 '22 • SRK-SM-349 To change the name of the "Favourite" button, press and hold down the "Favourite" button for approximately 1 second. "Edit Favourite name" dialog appears to change the name. Figure 5-4 Figure 5-5 - 23 -...
  • Page 78 '22 • SRK-SM-349 Enter the new favourite name and tap [YES]. Figure 5-6 Figure 5-7 - 24 -...

  • Page 79: Using Options

    '22 • SRK-SM-349 (6) Using Options You can make various option settings such as alerts and LED lighting, and check the number of accounts registered with an air conditioner. Home restricted mode : Only “Home Leave Mode”, “Cooling specific” and “LED ON” are operable. Demo mode : Options are not operable.

  • Page 80: Shut-Off Reminder Alert

    '22 • SRK-SM-349 Only "LED ON" is ON by default. Switch between [ON] and [OFF], and tap on the top right of the screen to save the settings you changed. Note • Shut-off reminder alert, AC error notification, Hi temp/low temp alert, Watching function can be used with "Remote operation mode".

  • Page 81: Air Conditioner Error Notification

    '22 • SRK-SM-349 ■ To not to receive alerts, tap [OFF]. When the pop-up message “If your external location is disabled, it cannot be retrieved. Do you want to disable the external location?” appears, tap [YES] and then tap on the top right.

  • Page 82: Hi Temp/Low Temp Alert

    '22 • SRK-SM-349 • Hi temp/low temp alert When the air conditioner reaches the specified high/low temperature condition, a push notification is sent to the smartphone application. ■ To receive alerts, tap [ON] and enter the high and low temperatures and then tap on the top right.

  • Page 83: Watching Function

    '22 • SRK-SM-349 • Watching function When the air conditioner is controlled other than your smartphone, an e-mail is sent to the registered e-mail address. Note Note • The notification also applies to the operation with the timer of the air conditioner itself and the end of internal clean operation.
  • Page 84 '22 • SRK-SM-349 ■ To change the setting of home leave mode, tap . To hide them, . The following settings can be changed. ・Determine temp : Set the preferred outside temperature to start the operation of the air conditioner in cooling/heating mode.

  • Page 85: Cooling Specific

    '22 • SRK-SM-349 • Cooling specific If you set it as an air conditioner for cooling only, you won't be able to use the heating in the smartphone application. ■ To use “Cooling specific”, tap [ON] and then tap on the top right. •...

  • Page 86: Setting Weekly Timer

    '22 • SRK-SM-349 (7) Setting Weekly Timer Makes the timer setting for every day of the week. Tap [Weekly Timer] on the lower part of the air conditioner details screen. The “Weekly Timer” screen appears. Figure 7-1 on the top right of the screen to save the settings you changed. Tap the day of the week you want to set to display the timer list for that day of the week.
  • Page 87 '22 • SRK-SM-349 A disabled timer shows the time and operation mode only. Tap the switch at to enable and edit. Edit each item and tap on the top right to set the timer on the target day. Figure 7-3 When at least one timer setting is ON, the timer icon appears on the air conditioner detail screen.

  • Page 88: Setting Timer By Specifying Date Via Calendar

    '22 • SRK-SM-349 (8) Setting Timer by Specifying Date via Calendar When you set the weekly timer, the same timer is applied to the same day every week. To turn off the timer or set the timer of a different day on a certain day, set individually from the “Calendar”...

  • Page 89: Clear The Timer Set From The Calendar

    '22 • SRK-SM-349 Tap the date of the calendar. Select the timer of the day of the week that you want to apply from “Weekly Timer Settings” and tap on the top right of the screen. If you select “OFF” from “Weekly Timer Settings”, the weekly timer is not applied.
  • Page 90 '22 • SRK-SM-349 From “Weekly Timer Settings”, select the same day of the week as the date to clear and tap Figure 8-4 When cleared, the background of the date is displayed in white. Figure 8-5 - 36 -...

  • Page 91: Displaying Electricity Bill Graph

    '22 • SRK-SM-349 (9) Displaying Electricity Bill Graph Displays an electricity bill by month on a graph. You can also set the electricity unit cost. Note Depending on the type of air conditioner you connect, the function may be disabled. Tap [Electricity Bill Graph] on the lower part of the air conditioner details screen.

  • Page 92: Updating Firmware

    '22 • SRK-SM-349 (10) Updating Firmware If the firmware of your wireless LAN interface is not up to date, an exclamation mark appears on the “Air Conditioner List” screen. ！ Tap [Details] to display the air conditioner details screen. Figure 10-1 Tap the [Firmware update] button.
  • Page 93 '22 • SRK-SM-349 Tap [YES] to update the firmware to the latest one. The firmware update takes 10 minutes (Max). The operation from the application is not accepted during that period. If after 10 minutes (Max) the "Firmware update" button appears, retry the firmware update. Figure 10-3 When the firmware becomes up to date, the firmware version appears instead of the...

  • Page 94: Main Menu

    '22 • SRK-SM-349 (11) Main Menu Tap the menu button ( ) that appears on the top left in the screen such as “Air Conditioner List”, to display the main menu. ■ Air Conditioner List : Operates or sets an Air conditioner.

  • Page 95: Canceling Demo Mode

    '22 • SRK-SM-349 • Canceling demo mode In the demo mode Cancel demo : Exits the demo mode. Figure 11-2 - 41 -...

  • Page 96: Checking Alerts

    '22 • SRK-SM-349 (12) Checking Alerts Open the main menu and tap [Alerts]. Figure 12-1 A list of alerts appears. Tap each alert to display the alert details screen and check it. appears to the alert that is not checked in the alert details screen.
  • Page 97 '22 • SRK-SM-349 Figure 12-3 - 43 -...

  • Page 98: Changing Application Settings

    '22 • SRK-SM-349 (13) Changing Application Settings Open the main menu and tap [App Settings]. Figure 13-1 The “Application Settings” screen appears. ■ Switch Operation Modes: Switches between the remote operation mode and home restricted mode. → To “Switch Operation Modes” ■...

  • Page 99: Switch Operation Modes

    '22 • SRK-SM-349 Note • In "Home restricted mode", you cannot operate "Password Settings". In "Try a Demo", only "Language/Time Zone Settings" and "Application Version Display" can be operated. Functions that cannot be operated are displayed in gray, and nothing is displayed even if you tap them.

  • Page 100: Switching To "Home Restricted Mode

    '22 • SRK-SM-349 When the account creation pop-up message appears, tap [OK], agree with the handling of personal information, and create an account. → To “Creating user account” Figure 13-4 • Switching to “Home restricted mode” Tap [Home restricted mode] → Tap on the top right to switch the mode.
  • Page 101 '22 • SRK-SM-349 The popup for remote control disabled and the popup for deleting server data will appear, so tap [YES]. Figure 13-6 Figure 13-7 When the operation mode switching completion pop-up message appears, tap [OK]. Figure 13-8 - 47 -...

  • Page 102: Reset Password

    '22 • SRK-SM-349 • Reset Password Enter the registered e-mail address and tap the [Issue code] button. Note • After tapping the [Issue code] button, keep this screen displayed until the password resetting is completed. If you tap and return to the previous screen, these operations are canceled.
  • Page 103 '22 • SRK-SM-349 An e-mail with a security code will be sent to the e-mail address you entered. Enter “Security code” and “New password” and tap [Reset Password] ××××××××××@×××××.jp to update your password. Note • A password must be between 8 to 16 012345 characters including at least one alphabetic character and one numeric character.

  • Page 104: Language/Time Zone Settings

    '22 • SRK-SM-349 • Language/Time Zone Settings The “Language/Time Zone Settings” screen appears. Select a language to use in the application. Select a time zone. Select the time zone in which the air conditioner to operate via the application exists. Choose the unit of temperature.

  • Page 105: Application Initialization

    '22 • SRK-SM-349 • Application Initialization Initializes the smartphone application. Note • Note that if you initialize the application in “Remote operation mode”, the information of the account logged in is deleted. Tap [Initialize the application]. Figure 13-14 - 51 -...
  • Page 106 '22 • SRK-SM-349 When the pop-up message “Your account information will be deleted. Do you want to initialize the application?” appears, tap [YES]. Figure 13-15 When the pop-up message "Initialization is complete. Close the application." appears, tap [OK] to close the application. Figure 13-16 - 52 -...

  • Page 107: Application Version Display

    '22 • SRK-SM-349 • Application Version Display Displays the version of your smartphone application. Figure 13-17 - 53 -...

  • Page 108: Troubleshooting

    '22 • SRK-SM-349 (14) Troubleshooting • When the air conditioner that you want to register does not appear in the air conditioner list screen Tap the [Find unregistered Air Conditioners] Button to search unregistered air conditioners and update the “Air Conditioner List” screen. Figure 14-1 When asked for "search your local network"...

  • Page 109: How To Delete A Registered Air Conditioner

    '22 • SRK-SM-349 • How to delete a registered air conditioner To delete a registered air conditioner, press and hold down (2 seconds) the icon of the target air conditioner. Figure 14-3 When the deleting air conditioner pop-up Message appears, tap [YES]. Figure 14-4 - 55 -...

  • Page 110: When An Abnormality Notification Appears In The Air Conditioner List

    '22 • SRK-SM-349 • When an abnormality notification appears in the air conditioner list When an abnormality notification appears, air conditioner abnormality has been detected. Contact your dealer. When “AC error notification” of the option settings is enabled, an e-mail is sent to the registered e-mail address.

  • Page 111: When Operation Is Performed By Another Account

    '22 • SRK-SM-349 • When operation is performed by another account The message shows in the following cases: • When the application is operated from other smartphones at the same time • When the air conditioner is changing its operation status by its set control The equipment is not malfunctioning, so please try again after a while.
  • Page 112 MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. 2-3, Marunouchi 3-chome, Chiyoda-ku, Tokyo, 100-8332, Japan http://www.mhi-mth.co.jp/en/ 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.

This manual is also suitable for:

Srk20ztl-wSrk25ztl-wSrk35ztl-wSrk50ztl-w

Table of Contents