Daikin 2MXM40M4V1B Installer'S Reference Manual Download Page 67

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Troubleshooting

Installer reference guide

2(A)MXM40+50 + 2(A)MXF40+50
R32 Split series
4P600463-2C – 2020.08

DANGER: RISK OF ELECTROCUTION

▪

When the unit is not operating, the LEDs on the PCB are turned off in order to
save power.

▪

Even when the LEDs are off, the terminal block and the PCB may be powered.

Summary of Contents for 2MXM40M4V1B

Page 1: ...Installer reference guide R32 Split series 2MXM40M4V1B 2MXM50M3V1B9 2AMXM40M4V1B 2AMXM50M4V1B 2AMXF40A2V1B 2AMXF50A2V1B 2MXF40A2V1B 2MXF50A2V1B 2MXM40N2V1B 2MXM50N2V1B...

Page 2: ...1 About mounting the outdoor unit 30 6 3 2 Precautions when mounting the outdoor unit 31 6 3 3 To provide the installation structure 31 6 3 4 To install the outdoor unit 32 6 3 5 To provide drainage...

Page 3: ...n commissioning 59 12 3 Checklist before commissioning 59 12 4 Checklist during commissioning 60 12 5 Trial operation and testing 60 12 5 1 To perform a test run 60 12 6 Starting up the outdoor unit 6...

Page 4: ...igerant piping to the indoor unit connecting the electrical wiring to the indoor unit see the installation manual of the indoor unit Documentation set This document is part of a documentation set The...

Page 5: ...g of warnings and symbols DANGER Indicates a situation that results in death or serious injury DANGER RISK OF ELECTROCUTION Indicates a situation that could result in electrocution DANGER RISK OF BURN...

Page 6: ...your dealer DANGER RISK OF BURNING SCALDING Do NOT touch the refrigerant piping water piping or internal parts during and immediately after operation It could be too hot or too cold Give it time to re...

Page 7: ...rgency Name and address of fire department police and hospital Name address and day and night telephone numbers for obtaining service In Europe EN378 provides the necessary guidance for this logbook 2...

Page 8: ...erating gas appliance or an operating electric heater in case the floor area is less than the minimum floor area A m no auxiliary devices which may be a potential ignition source are installed in the...

Page 9: ...or stored indoors e g winter garden garage machinery room Pipework in unventilated spaces NOTICE Pipework shall be protected from physical damage Installation of pipework shall be kept to a minimum T...

Page 10: ...4 0 5 6 267 2 2 4 34 5 8 21 3 2 2 41 2 5 8 286 2 4 4 74 6 0 22 8 2 4 49 0 6 0 306 2 6 5 13 6 2 24 3 2 6 57 5 6 2 327 2 8 5 53 6 4 25 9 2 8 66 7 6 4 349 3 0 5 92 6 6 27 6 3 0 76 6 6 6 371 3 2 6 48 6 8...

Page 11: ...entrations in a closed room can lead to oxygen deficiency Toxic gas might be produced if refrigerant gas comes into contact with fire DANGER RISK OF EXPLOSION Pump down Refrigerant leakage If you want...

Page 12: ...nto the system Charge the liquid refrigerant as follows If Then A siphon tube is present i e the cylinder is marked with Liquid filling siphon attached Charge with the cylinder upright A siphon tube i...

Page 13: ...ctive 98 83 EC 2 2 6 Electrical DANGER RISK OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover connecting electrical wiring or touching electrical parts Disconnect the pow...

Page 14: ...earth leakage protector CAUTION When connecting the power supply connect the earth cable first before making the current carrying connections When disconnecting the power supply disconnect the curren...

Page 15: ...connected securely Make sure all covers are closed before starting up the unit NOTICE Only applicable if the power supply is three phase and the compressor has an ON OFF starting method If there exis...

Page 16: ...ntinuously operating ignition sources example open flames an operating gas appliance or an operating electric heater Opening the unit see 6 2 Opening the unit 430 DANGER RISK OF ELECTROCUTION Do NOT l...

Page 17: ...valve is open when the compressor is run air will be sucked in This will cause abnormal pressure in the refrigeration cycle which may result in equipment damage and even injury CAUTION Incomplete fla...

Page 18: ...ablish proper earthing Do NOT earth the unit to a utility pipe surge absorber or telephone earth Incomplete earthing may cause electrical shock Install the required fuses or circuit breakers Secure th...

Page 19: ...nect the power supply for more than 10 minutes and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing The voltage MUST be less than 50 V DC befor...

Page 20: ...oves DANGER RISK OF EXPLOSION Use a pipe cutter to remove the compressor Do NOT use the brazing torch Use approved refrigerants and lubricants only DANGER RISK OF BURNING SCALDING Do NOT touch the com...

Page 21: ...uide 21 2 A MXM40 50 2 A MXF40 50 R32 Split series 4P600463 2C 2020 08 DANGER RISK OF ELECTROCUTION When the unit is not operating the LEDs on the PCB are turned off in order to save power Even when t...

Page 22: ...and indoor unit are delivered on site Keep the following in mind At delivery the unit MUST be checked for damage Any damage MUST be reported immediately to the claims agent of the carrier Bring the p...

Page 23: ...it 1 Lift the outdoor unit CAUTION Only handle the outdoor unit as follows 2 Remove the accessories at the bottom of the package 1 1 1 1 1 c d e f g 1 h 1 a b 1 a Outdoor unit installation manual b Ge...

Page 24: ...4 About the box Installer reference guide 24 2 A MXM40 50 2 A MXF40 50 R32 Split series 4P600463 2C 2020 08 g Reducer assembly h Energy label...

Page 25: ...NING MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable WARNING FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable INFORMATION For the operation limits...

Page 26: ...ork place In case of construction works e g grinding works where a lot of dust is created the unit MUST be covered Choose an installation location with sufficient space for carrying the unit in and ou...

Page 27: ...outdoor unit INFORMATION Also read the following requirements 2 General safety precautions 45 7 1 3 Refrigerant piping length and height difference 435 Mind the following spacing guidelines Wall faci...

Page 28: ...llowing places Sound sensitive areas e g near a bedroom so that the operation noise will cause no trouble Note If the sound is measured under actual installation conditions the measured value might be...

Page 29: ...aker a b c d c d a Sea wind b Building c Outdoor unit d Windbreaker The outdoor unit is designed for outdoor installation only and for ambient temperatures within the following ranges Cooling mode Hea...

Page 30: ...lateral snowfall is possible make sure that the heat exchanger coil is NOT affected by the snow If necessary install a snow cover or shed and a pedestal 6 2 Opening the unit 6 2 1 About opening the un...

Page 31: ...s in the following chapters 2 General safety precautions 45 6 1 Preparing the installation site 426 6 3 3 To provide the installation structure Check the strength and level of the installation ground...

Page 32: ...ome slippery in case of ambient freezing temperatures If you install the unit on a frame install a waterproof plate within 150 mm of the bottom side of the unit in order to prevent water from getting...

Page 33: ...m falling over In case the unit is installed in places where strong wind can tilt the unit take following measure 1 Prepare 2 cables as indicated in the following illustration field supply 2 Place the...

Page 34: ...nt piping 42 7 3 1 About checking the refrigerant piping 42 7 3 2 Precautions when checking the refrigerant piping 43 7 3 3 To check for leaks 43 7 3 4 To perform vacuum drying 44 7 1 Preparing refrig...

Page 35: ...midity is higher than RH 80 the thickness of the insulation materials should be at least 20 mm to prevent condensation on the surface of the insulation 7 1 3 Refrigerant piping length and height diffe...

Page 36: ...indoor unit in order to add another indoor unit later WARNING Only use R32 as refrigerant Other substances may cause explosions and accidents R32 contains fluorinated greenhouse gases Its global warmi...

Page 37: ...rigerant cycle e g air Only use R32 when adding refrigerant Only use installation tools e g manifold gauge set that are exclusively used for R32 installations to withstand the pressure and to prevent...

Page 38: ...l or ester oil when connecting a flare nut Tighten 3 or 4 turns by hand before tightening firmly ALWAYS use 2 wrenches together when loosening a flare nut ALWAYS use a spanner and torque wrench togeth...

Page 39: ...type Conventional flare tool Clutch type Ridgid type Wing nut type Imperial type A 0 0 5 mm 1 0 1 5 mm 1 5 2 0 mm 5 Check that the flaring is properly made a b c a Flare s inner surface MUST be flawle...

Page 40: ...pe connection port a b d e c a Outdoor unit connection port b Reducer type 1 c Reducer type 2 d Flare nut for 12 7 mm e Inter unit piping Coat the threaded connection port of the outdoor unit where th...

Page 41: ...s could cause a refrigerant leak a b a Spanner b Torque wrench When it is expected that the operating pressure will be low e g when cooling will be performed while the outside air temperature is low s...

Page 42: ...the outdoor unit Piping length Keep field piping as short as possible Piping protection Protect the field piping against physical damage 1 Connect the liquid refrigerant connection from the indoor uni...

Page 43: ...evacuate to a gauge pressure of 100 7 kPa 1 007 bar 5 Torr absolute Make sure the pump oil does not flow oppositely into the system while the pump is not working NOTICE Use this vacuum pump for R32 e...

Page 44: ...e ports of the gas stop valves 1 Vacuum the system until the pressure on the manifold indicates 0 1 MPa 1 bar 2 Leave as is for 4 5 minutes and check the pressure If the pressure Then Does not change...

Page 45: ...00463 2C 2020 08 INFORMATION After opening the stop valve it is possible that the pressure in the refrigerant piping does NOT increase This might be caused by e g the closed state of the expansion val...

Page 46: ...efore charging additional refrigerant make sure the outdoor unit s external refrigerant piping is checked leak test vacuum drying INFORMATION Depending on the units and or the installation conditions...

Page 47: ...information WARNING FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable WARNING MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable WARNING The applianc...

Page 48: ...f liquid piping 20 m 0 020 R Additional charge kg rounded in units of 0 1 kg INFORMATION Piping length is the one way length of liquid piping 8 5 To determine the complete recharge amount INFORMATION...

Page 49: ...ses label is delivered with the unit see accessories peel off the applicable language and stick it on top of a b Factory refrigerant charge see unit name plate c Additional refrigerant amount charged...

Page 50: ...s of the following stages 1 Making sure the power supply system complies with the electrical specifications of the units 2 Connecting the electrical wiring to the outdoor unit 3 Connecting the electri...

Page 51: ...e breaker with at least 3 mm between the contact point gaps that provide full disconnection under overvoltage category III WARNING If the supply cord is damaged it MUST be replaced by the manufacturer...

Page 52: ...lock j S91 red liquid thermistor lead wire k S92 white gas thermistor lead wire l Multimeter DC voltage range 9 1 2 Guidelines when connecting the electrical wiring Keep the following in mind If stran...

Page 53: ...minal must be longer than the other wires 1 3 9 1 3 Specifications of standard wiring components Component Power supply cable Voltage 220 240 V Phase 1 Frequency 50 Hz Wire type 3 core cable 2 5 mm2 H...

Page 54: ...ct room A to A B to B e A a A a B e B b c d 1 2 3 L N 1 2 3 f a Terminal for room A B b Circuit breaker c Earth leakage circuit breaker d Power supply wire e Interconnection wire for room A B f Wire r...

Page 55: ...NOTICE It is recommended that the refrigerant piping between indoor and outdoor unit is installed in a ducting or the refrigerant piping is wrapped with finishing tape 1 Insulate and fix the refrigera...

Page 56: ...standby electricity saving function 58 11 1 About ECONO mode prohibition setting This setting disables the input control signal from the user interface Use this setting when you wish to block receptio...

Page 57: ...ode Prerequisite The main power supply MUST be turned off 1 Remove the top plate and the electric box cover of the outdoor unit see 11 1 1 To turn on ECONO mode prohibition setting 456 2 Cut the jumpe...

Page 58: ...turns OFF the power supply to the outdoor unit and turns ON the standby electricity saving mode on the indoor unit The standby electricity saving function works with following units FTXM FTXP FTXJ FV...

Page 59: ...ing the first running period of the unit the required power may be higher than stated on the nameplate of the unit This phenomenon is caused by the compressor that needs a continuous run time of 50 ho...

Page 60: ...and piping match for each indoor unit Check if the priority room setting is set for 2 or more rooms Keep in mind that the DHW generator for Multi or the Hybrid for Multi shall not be selected as the...

Page 61: ...ation 4 When test run is finished set the temperature to a normal level In cooling mode 26 28 C in heating mode 20 24 C INFORMATION Test run can be disabled if necessary After the unit is turned OFF i...

Page 62: ...please make sure the following is clear for the user Make sure that the user has the printed documentation and ask him her to keep it for future reference Inform the user that he can find the complete...

Page 63: ...intenance safety precautions The yearly maintenance of the outdoor unit 14 2 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING NOTICE Risk of electrostatic di...

Page 64: ...erformance 14 4 About the compressor When servicing the compressor keep in mind following precautions DANGER RISK OF ELECTROCUTION Use this compressor on a grounded system only Turn the power off befo...

Page 65: ...tive circuit breaker When a safety device was activated stop the unit and find out why the safety device was activated before resetting it NEVER shunt safety devices or change their values to a value...

Page 66: ...hose is complete Improperly connected drainage Secure the drainage 15 3 4 Symptom Electrical leakage Possible causes Corrective action The unit is NOT earthed correctly Check and correct the connecti...

Page 67: ...MXM40 50 2 A MXF40 50 R32 Split series 4P600463 2C 2020 08 DANGER RISK OF ELECTROCUTION When the unit is not operating the LEDs on the PCB are turned off in order to save power Even when the LEDs are...

Page 68: ...wn function with which you can collect all refrigerant from the system into the outdoor unit Possible consequence Self combustion and explosion of the compressor because of air going into the operatin...

Page 69: ...if present on the indoor unit Method 2 Using the indoor unit user interface 16 3 1 To start and stop forced cooling using the indoor unit ON OFF switch 1 Press the ON OFF switch for at least 5 seconds...

Page 70: ...nit Part numbering is by Arabic numbers in ascending order for each part and is represented in the overview below by in the part code Symbol Meaning Symbol Meaning Circuit breaker Protective earth Con...

Page 71: ...P Light emitting diode service monitor green HIGH VOLTAGE High voltage IES Intelligent eye sensor IPM Intelligent power module K R KCR KFR KHuR K M Magnetic relay L Live L Coil L R Reactor M Stepper m...

Page 72: ...sensor S W SW Operation switch SA F1S Surge arrester SR WLU Signal receiver SS Selector switch SHEET METAL Terminal strip fixed plate T R Transformer TC TRC Transmitter V R V Varistor V R Diode bridge...

Page 73: ...T 6 4CuT a b c d e f g g h i j A B A B k l l m n o o p q r s t n m i h g c c A Room A B Room B a 4 way valve ON heating b High pressure switch with automatic reset c Muffler d Discharge pipe thermisto...

Page 74: ...application explaining how to install configure and maintain it Operation manual Instruction manual specified for a certain product or application explaining how to operate it Maintenance instructions...

Page 75: ......

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