Mitsubishi Heavy Industries SRF25ZS-W User Manual Download

Page: 35 / 37

EN-33

Self diagnosis function

■

We are constantly trying to do better service to our customers by installing such judges that show abnormality of each function as follows:

Description of trouble

Room temperature sensor error

Cause

•

Broken heat exchanger sensor 1 wire, poor connector
connection

connection

Heat exchanger sensor 1 error

•

Broken heat exchanger sensor 3 wire, poor connector

Heat exchanger sensor 3 error

•

TIMER light ON

2-time flash

1-time flash

RUN light

3-time flash

Outdoor temperature sensor error

•

Broken outdoor sensor wire, poor connector connection

•

Discharge pipe sensor error

•

Broken discharge pipe sensor wire, poor connector connection

Rotor lock

•

Defective compressor

•

Open phase on compressor

•

Defective outdoor unit boards

•

Broken power transistor, broken compressor wire

•

Broken discharge pipe sensor wire, poor connector connection

•

Compressor blockage

•

Power transistor error

•

Broken power transistor

Current cut

Trouble of outdoor unit

Over current

•

Overload operation, overcharge of refrigeration

Over heat of compressor

Error of signal transmission

Outdoor fan motor error

•

Defective fan motor, poor connector connection

Cooling high pressure protection

•

Overcharge of refrigeration, short circuit of outdoor unit

RUN light keeps flashing

RUN light ON

RUN light 2-time flash

2-time flash

1-time flash

TIMER light

4-time flash

2-time flash

4-time flash

1-time flash

2-time flash

3-time flash

5-time flash

6-time flash

Keep flashing

Suction pipe sensor error

•

Broken suction pipe sensor wire, poor connector connection

5-time flash

Closed service valve

•

Closed service valve

RUN light 7-time flash

1-time flash

7-time flash

Outdoor heat exchanger fluid pipe
sensor error

Defective power source, Broken signal wire, defective
in/outdoor unit boards

Gas shortage, defective discharge pipe sensor, closed
service valve

Compressor locking, open phase on compressor
output, shortcircuit on power transistor, closed service
valve

Broken heat exchanger fluid pipe sensor wire, poor
connector connection

Broken room temperature sensor wire, poor connector
connection

Refrigerant is insufficient
Closed service valve
Heat exchanger sensor 1 error

•

Defective fan motor, poor connector connection

•
•
•

Indoor fan motor error

Refrigerant is insufficient, leaking
Closed service valve
Broken heat exchanger sensor 1 wire, poor connector
connection

Active filter voltage error

•

Defective outdoor unit boards

5-time flash

7-time flash

6-time flash

RFB012A009F_EN.indd 33

4/25/2020 9:30:17 PM

Summary of Contents for SRF25ZS-W

Page 1: ...RFB012A009F ORIGINAL INSTRUCTIONS USER S MANUAL AIR CONDITIONER 202004 SRF25ZS W SRF35ZS W SRF50ZSX W ...

Page 2: ......

Page 3: ...a certain concentration This will be indicated as follows Hg mercury 0 0005 Cd cadmium 0 002 Pb lead 0 004 Please dispose of batteries correctly at your local community waste collection or the recycling center The emission sound pressure level from each Indoor and Outdoor unit is under 70 dB A Contents Safety precautions 2 Name of each part and its function 7 Remote control handling 9 Operation fa...

Page 4: ...uld be handing this equipment with reference to the installation manual There is information included in the user s manual and or installation manual Following precaution is only for R32 This equipment uses Àammable refrigerants If the refrigerant is leaked together with an external ignition source there is a possibility of ignition ௗWARNING xStrict compliance of the domestic laws must be observed...

Page 5: ...et an electric shock xMake sure to install the drain hose properly so that all the water is drained out Improper installation may lead to water drop in the room resulting in wet furniture xMake sure that the system has been properly earthed Earth wire should never be connected to a gas pipe water pipe lightning conductor or telephone earth wire Improper installation of the earth wire may cause an ...

Page 6: ...from the indoor unit If the indoor unit falls down you may get injured xDo not place a flammable insecticide or paint spray near the air conditioner nor spray it directly on the system This may result in a fire xDo not expose any combustion appliance directly to the air stream of the air conditioner The combustion appliance may malfunction xDo not wash the air conditioner with water This could cau...

Page 7: ...ppliance you must regularly ventilate the indoor air Insufficient ventilation may cause accidents due to oxygen deficiency xWhen you clean air conditioner stop the unit and turn off the power source Never open the panel while the internal fan is rotating xDo not place objects near the outdoor unit or allow leaves to gather around the unit If there are objects or leaves around the outdoor unit smal...

Page 8: ...em turn off the power source and consult your dealer Continued use of the system in abnormal circumstances can result in malfunctioning electric shock fire etc xIf the air conditioner fails to cool or warm the room it may have a refrigerant leakage Contact your dealer If refrigerant needs to be added check with your dealer for proper instructions If the refrigerant comes in contact with the bare s...

Page 9: ...indoor air Unit operation switch Up down airÀow direction adjustment Àap Lower air outlet Air blows out of here Drain hose Drains water from the indoor unit Refrigerant piping connection and electric wire Left right airÀow adjustment louver Page 15 Left right airÀow adjustment louver Page 15 Page 15 Air inlet panel removed Air lter Removes dust or dirt from the inlet air Page 28 Air cleaning lter ...

Page 10: ...light green 0 5 sec ON OFF 1 5 sec HOT KEEP Remote control signal receiver TIMER light yellow Illuminates during TIMER operation 3 sec 1 sec ON OFF SELF CLEAN operation 0 5 sec ON OFF 1 5 sec Illuminates during HIGH POWER operation Blinks during heating preparation Use this button to switch between the combination of upper and lower air outlets and upper air outlet Illuminates during upper air out...

Page 11: ...control check that the air conditioner receives the signals properly For installing or removing the remote control move it up or down in the holder Warning note for remote control handling x Are the batteries running down Replacing the batteries above Replace the batteries with new ones and retry the operation Operation failure with the remote control x If the operation fails operate the unit with...

Page 12: ...l Check that the reception buzzer sound pip is emitted from the indoor unit At completion of the setting the indoor unit emits a buzzer sound pip If no reception tone is emitted start the setting from the begin ning again Setting an indoor unit 1 2 3 Since the signal is sent in about 6 seconds after the ACL switch is pressed point the remote control at the indoor unit for some time Child Lock This...

Page 13: ...he current time and timer function ACL switch Switch for resetting microcomputer Page 9 PROGRAM button This button sets WEEKLY TIMER Page 19 HI ECO button This button changes the HIGH POWER ECONOMY operation Page 23 SILENT button This button changes the SILENT operation Page 24 OFF TIMER button This button selects OFF TIMER operation Page 16 WEEKLY button This button switches the WEEKLY TIMER to O...

Page 14: ...switch Press with the tip of a ballpoint pen etc The day of the week display blinks enabling the setting of a day of the week Press the or TIMER button Set to Sat Press the SET button The day of the week display changes from blinking to steady lighting com pleting the setting of a day of the week and the time display blinks Make sure to press the button within 60 seconds from the last operation in...

Page 15: ...OTE Operation capacity by your choice FAN SPEED Set automatically by microcomputer AUTO Silent operation ULo Energy saving operation Lo Standard operation Me Powerful operation with high capacity Hi 1 Press the or TEMP button Each time the button is pressed the switch over occurs in the following order 18 ĺ 19 ĺ 23 ĺ 24 ĺ 25 ĺ 30 When 30 is indicated even if the button is pressed the indicator doe...

Page 16: ... operation Mechanism x The unit draws heat from the cold outside air transfers it to indoors and heats the room As a characteristic of heat pump system the heating capacity reduces when the outside air temperature gets colder x It may take some time to supply hot air after turning on the air conditioner x If the outside temperature becomes extremely low it would be better to use an additional sour...

Page 17: ...perating it stops swinging at the position Since this angle is memori zed in the microcomputer the Àap will automatically be set at this angle when the next operation is started WARNING Do not expose directly to airÀow from the air conditioner for a long time Recommended angle of the flap when stopping NOTE FOR HEATING OPERATION HEAT Horizontal blowing Slant forward blowing COOL DRY Swing Flap sto...

Page 18: ...ditioner turned off start the operation from Step 1 With the air conditioner running start from Step 2 Example You prefer it to stop 22 30 Press the ON OFF button Press the OFF TIMER button OFF TIMER display is blinking Press the or TIMER button Every time the button is pressed the display is switched in the order of 0 00 0 10 0 20 Units of ten minutes 1 00 1 10 Every time the button is pressed th...

Page 19: ...ess the or TIMER button Every time the button is pressed the display is switched in the order of 0 00 0 10 0 20 Units of ten minutes 1 00 1 10 Every time the button is pressed the display is switched in the order of 0 00 23 50 23 40 Units of ten minutes 23 00 22 50 Set at 8 00 Press the SET button The display changes from blinking to steady lighting and the setting is complete The timer light yell...

Page 20: ...TIMER In COOL operation Stop Operation starts Check the room temp 60 mins before Set time When SLEEP TIMER is selected the set temperature is automatically adjusted after a while ensuring that the room is not too cold during cool ing or too warm during heating x During cooling The preset temperature is lowered by 1 C at the start of SLEEP operation when the timer is set After that the temperature ...

Page 21: ...hether the air conditioner is running or not When the ON TIMER setting time is reached the remote control operates according to the contents that are set The remote control display is also switched to the operation contents that are set The setting can be changed from the remote control after ON TIMER operation of the WEEKLY TIMER The following contents can be set by the ON TIMER Operation mode fa...

Page 22: ...play is switched in the order of Every time the button is pressed the display is switched in the order of 3 Press the SET button The day of the week is determined and the program number blinks Press the PROGRAM button and current day of the week blink Press the or TIMER button Select a day of the week to be reserved Every time the button is pressed the display is switched in the order of Mon Tue W...

Page 23: ... of ten minutes 23 00 22 50 When ON TIMER is selected go to Step 8 When OFF TIMER is selected go to Step 9 Setting mode Collective setting Set the same operation contents to the same program number of all the days of the week In Step 2 above select all of the days of the week When the contents that were individually set exist in the same program number the contents are overwritten x If no operatio...

Page 24: ...3 P4 Tue Sun P1 P2 P3 P4 P1 P2 P3 P4 Display of all of the days of the week Press the or TIMER button Select a day of the week and a program number to be con rmed Display starts from the current day of the week For the program without set ting is displayed When the PROGRAM button is pressed in Con rm mode a setting mode is set Press the or TIMER button Select a day of the week to be canceled 4 Pre...

Page 25: ...e following operations are set HIGH POWER opera tion will be canceled 1 When the HI ECO button is pressed again The operation mode will be changed to the ECONOMY operation 2 When the operation mode is changed 3 When it has been 15 min since HIGH POWER operation has started 4 When the SILENT button is pressed 5 When the NIGHT SETBACK button is pressed x Not operable while the air conditioner is OFF...

Page 26: ... x When NIGHT SETBACK operation is canceled by pressing the NIGHT SETBACK button the operation mode is reset to the mode immediately prior to the NIGHT SETBACK operation NOTE How to cancel Press the SILENT button to turn off the SILENT display x During SILENT operation the maximum cooling and heating capacities deteriorate x SILENT operation will not function during DRY and FAN operation x In case...

Page 27: ...hours in SELF CLEAN operation x The RUN light illuminates during SELF CLEAN operation x Pressing the SLEEP button or NIGHT SETBACK button during SELF CLEAN operation cancels the SELF CLEAN operation and then the unit is set to SLEEP or NIGHT SETBACK operation x This is not a function for removing mold germs or grime that have already adhered to the unit SELF CLEAN operation SELF CLEAN operation sh...

Page 28: ...ed 1 Timer settings 2 HIGH POWER operations x Auto restart function is set at on when the air conditioner is shipped from the factory Consult with your dealer if this function needs to be switched off x When power failure occurs the timer setting is canceled Once power is resumed set the timer again NOTE Tips for effective operation Please observe the following for the most economic and comfortabl...

Page 29: ...e air outlet will change to the upper outlet That state will be maintained until switch is turned off In case both outlets operation with Auto fan speed mode is selected the upper outlet will be kept for ten minutes after the start or until room temperature is close to reaching the setting point And then the air outlet will change to both outlets in order to spread comfort air to every corner Auto...

Page 30: ...panel remove the string and then pull it forward Installation Secure the upper edge of the air inlet panel by lightly pushing it in place the string as illustrated and then close the panel Do not use the following articles Hot water 40 C or more It may deform or discolour the unit Petrol paint thinner benzine or cleanser etc They may deform or scratch the unit Standard interval is once every two w...

Page 31: ...talytic washable deodorizing lter is particularly dirty it may be washed with water However the lter is fragile so be sure to wash it installed in the lter holder to avoid damaging it After washing the lter place it in sunlight to dry Placing the lter in sunlight revitalizes the deodori zing effect Remove the allergen clear filter Light orange from filter holder and inspect the filter Use a vacuum...

Page 32: ...shop appointed by the manufacturer because special purpose tools are required Suitable installation position Do not put any obstruction in front of the indoor unit preventing proper ventilation and functioning Do not install the unit in any of the following places Where there is a danger of leaking Àammable gases Where there is substantial splashing of oil Malfunctioning due to corrosion may occur...

Page 33: ... unit does not restart immediately after you have stopped it RUN light is on Not operating Restart is blocked for 3 minutes after you have stopped the operation to protect the unit Please wait for three minutes The three minute protection timer in the microcomputer automatically starts it up again Some steam escapes during COOL operation This may occur if the room s temperature and humidity are ve...

Page 34: ...u want to give priority to the air conditioner that was started later either stop the air conditioner that has priority or cause the operation type of the unit operated rst to match that of the unit operated second When other indoor units are operating in different modes the RUN light illuminates When the remote control operation switch is in the AUTO mode the air conditioner automatically selects...

Page 35: ...r connector connection Cooling high pressure protection Overcharge of refrigeration short circuit of outdoor unit RUN light keeps flashing RUN light ON RUN light 2 time flash 2 time flash 1 time flash TIMER light 4 time flash 2 time flash 4 time flash 1 time flash 2 time flash 3 time flash 5 time flash 6 time flash Keep flashing Suction pipe sensor error Broken suction pipe sensor wire poor connec...

Page 36: ...deteriorate over time The outdoor unit of this air conditioner is equipped with a terminal block for DRED input and supports ELV Extra Low Voltage complying with AS NZS60335 1 Under DRED mode RUN light and TIMER light blink alternately as shown When the Defrost function becomes effective during DRED operation the TIMER light blinks quickly Display in DRED mode Display in DRED mode during Defrost o...

Page 37: ... AIR CONDITIONING EUROPE LTD 5 The Square Stockley Park Uxbridge Middlesex UB11 1ET United Kingdom Tel 44 333 207 4072 Fax 44 333 207 4089 http www mhiae com MITSUBISHI HEAVY INDUSTRIES AIR CONDITIONERS AUSTRALIA PTY LTD Block E 391 Park Road Regents Park NSW 2143 PO BOX 3167 Regents Park NSW 2143 Tel 61 2 8774 7500 Fax 61 2 8774 7501 http www mhiaa com au ...

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