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Troubleshooting, fault analysis and customer service

10.1 Troubleshooting and customer service

The unit and components are manufactured using state-of-the-art production methods and tested several

times to verify their correct function. However, if alarms should occur, please check the functions as detailed

in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Troubleshooting and

customer service" in both operating manuals. Please inform your dealer if the unit is still not working correctly

after all function checks have been performed!

Operational malfunctions

Malfunction

Possible causes

Checks

Remedial measures

The unit does not start or

switches itself off

Power failure, under-

voltage, defective mains

fuse / main switch in

OFF position

Does all other electrical

equipment function cor-

rectly?

Check the voltage and if

necessary, wait for it to

come back on

Damaged power supply

Does all other elec.

equipment function cor-

rectly?

Repair by specialist firm

Wait time after switching

on is too short

Have approx. 5 minutes

elapsed since the

restart?

Schedule longer wait

times

Temperature outside

operating range

Are the fans in the indoor

unit and outdoor unit

working correctly?

Observe temperature

ranges of indoor unit and

outdoor unit

Electrical surges caused

by thunderstorms

Have there been light-

ning strikes in the area

recently?

Switch off the mains

breaker and switch it

back on. Have it

inspected by a specialist

Malfunction of the

external condensate

pump

Has the pump shut down

due to a malfunction?

Check and if necessary

clean the pump

The unit does not

respond to the remote

control

Transmission distance

too far / receiver affected

by interference

Does the indoor unit

beep when pressing a

key?

Reduce the distance to

less than 6 m or change

position

Defective remote control

Is the unit running in

manual mode?

Replace the remote con-

trol

Receiver or transmitter

unit exposed to exces-

sive solar radiation

Does it function correctly

in the shade?

Place the receiver and/or

transmitter unit in the

shade

Electromagnetic fields

are interfering with trans-

mission

Does it function after

removing potential

sources of interference?

Signal is not transmitted

when interference

sources are operational

Key in remote control

jammed / two buttons

pressed at same time

Does the “Transmitting”

symbol appear on the

display?

Release the key / only

press one key

Batteries in remote con-

trol are flat

Have new batteries been

inserted? Is the display

incomplete?

Insert new batteries

The unit works at

reduced or no cooling

capacity

Filter is dirty / air inlet /

outlet opening is blocked

by debris

Have the filters been

cleaned?

Clean the filters

REMKO ML series

Содержание ML 265 DC

Страница 1: ...ting and installation instructions Read the instructions prior to performing any task REMKO ML series ML 265 DC ML 355 DC ML 525 DC ML 685 DC Wall mounted units in split design 0245 2020 01 Edition 1...

Страница 2: ...hese operating instructions carefully before commis sioning using this device These instructions are an integral part of the system and must always be kept near or on the device Subject to modificatio...

Страница 3: ...Instructions for qualified personnel 22 5 1 Important notes prior to installation 22 5 2 Wall openings 22 5 3 Installation materials 22 5 4 Selection of installation location 23 5 5 Minimum clearances...

Страница 4: ...10 2 Indoor unit fault analysis 46 10 3 Resistances of the temperature probes 57 11 Care and maintenance 60 12 Shutdown 62 13 Exploded view and spare parts lists 63 13 1 Exploded view Indoor unit 63...

Страница 5: ...to highlight the magnitude of the danger in question DANGER Contact with live parts poses an immediate danger of death due to electric shock Damage to the insulation or individual components may pose...

Страница 6: ...are safe to use and fully functional at least once yearly Visual inspections and cleaning may be performed by the operator when the units are disconnected from the mains 1 7 Safety notes for installat...

Страница 7: ...parts may invalidate liability for resulting consequences 1 9 Intended use Depending on the model the units and the addi tional fittings with which they are equipped are only intended to be used as a...

Страница 8: ...oved collection points Disposal of equipment and components Only recyclable materials are used in the manufac ture of the devices and components Help protect the environment by ensuring that the devic...

Страница 9: ...4 Energy efficiency ratio SCOP 4 4 0 4 2 4 0 4 0 Electrical rated power consumption heating 2 kW 0 72 1 05 1 45 2 18 Electrical rated current consumption heating 2 A 3 44 4 5 6 4 9 5 Power consumptio...

Страница 10: ...d pressure level per stage 5 dB A 22 30 37 22 30 38 27 33 42 30 44 44 Sound pressure level Silent Turbo mode 5 dB A 20 39 21 41 26 45 26 46 Sound power level max dB A 53 55 57 62 Enclosure class IP X0...

Страница 11: ...54 0 84 1 08 Refrigerant additional quantity 5 m g m 20 40 Refrigerant piping max length m 25 30 50 Refrigerant piping max height m 10 20 25 Refrigerant connection injection pipe Inches mm 1 4 6 35 3...

Страница 12: ...554 333 ML 685 DC AT 845 540 350 702 363 Indoor units B A C Fig 2 Indoor unit dimensions ML 265 DC 685 DC IT All measurements in mm Measurements mm A B C ML 265 DC IT 290 722 187 ML 355 DC IT 297 802...

Страница 13: ...n infrared remote control The outdoor unit consists of a cooling cycle with compressor fin condenser condenser fan reversing valve and throttle element The outdoor unit is controlled by the regulation...

Страница 14: ...received correctly if the remote control is pointed at the receiver and no objects are obstructing the transmission path Two AAA batteries must be inserted into the remote control in preparation To d...

Страница 15: ...pted by pressing the MODE FAN Speed or ON OFF keys 5 FRESH key Press this key to activate deactivate the ion gener ator air freshener 6 TURBO key Activation of the turbo function makes it possible to...

Страница 16: ...i cally deactivated 14 LED key This activates deactivates the display on the indoor unit Indicators on the LCD 2 1 4 3 6 9 8 10 5 7 11 13 12 Fig 9 Indicators on the LCD 1 Mode indicator shows the curr...

Страница 17: ...the Arrow up down key to set the desired temperature The temperature can be set between 17 and 30 C in increments of 1 C 3 Press the ON OFF key to switch on the air conditioning unit 1 3 2 Fig 10 Auto...

Страница 18: ...MER ON key to set the switch on time and the TIMER OFF key to set the switch off time for the unit Setting the switch on time 1 Press the TIMER ON key The remote con trol shows TIMER ON the last switc...

Страница 19: ...to the following settings 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 5 5 6 0 6 5 7 0 7 5 8 0 8 5 9 0 9 5 10 11 12 13 14 15 16 17 18 19 20 21 22 23 and 24 Example TIMER function settings TIMER ON Auto on...

Страница 20: ...is acti vated On Set time Stop Start 2 hours later after setting 10 hours later after setting Fig 16 TIMER OFF TIMER ON example TIMER ON TIMER OFF Off Start Stop Example You want the air conditioning...

Страница 21: ...after 1 hour After one more hour the room temperature is increased by an additional 1 C In heating mode the room temperature is decreased within the first two hours of operation by 2 C After 7 hours...

Страница 22: ...oil return if the outdoor unit is located above the indoor unit see section Oil return measures n Add refrigerant if the basic length of the refrig erant piping exceeds 5 metres For the quantity of ad...

Страница 23: ...on is to build a small roofed area over the unit These measures should not affect the flow of warm outlet air Wind If the unit is being installed in windy areas ensure that the warm outlet air is disc...

Страница 24: ...cess for maintenance and repair work and facilitate optimum air distribution 2 1 2 1 A B C D E E C A B F IT AT Fig 24 Minimum clearances of the indoor unit and outdoor unit AT Outdoor unit IT Indoor u...

Страница 25: ...or indoor units ML 265 DC 685 DC IT rear view Measurements mm A B C D E F G H ML 265 DC IT 372 350 37 50 100 197 542 180 ML 355 DC IT 375 427 43 44 111 204 545 257 ML 525 DC IT 543 423 53 55 111 135 8...

Страница 26: ...erant piping is installed under the plaster If the customer routes the refrigerant piping to the unit underneath the plaster observe the following note The principal connection options can be found in...

Страница 27: ...he unit is attached by means of a wall bracket considering the air discharge side located in the lower part 1 Mark the mounting points on the structurally permissible building sections according to th...

Страница 28: ...erating manual for the indoor unit 3 Use the wall or floor brackets to fit the out door unit against structural parts approved to support the static load refer to the installa tion instructions for th...

Страница 29: ...electrical lines and refrigerant piping The con nections of the individual circuits must not be mixed up Mixing up the assignment of control lines and refrigerant piping can have fatal con sequences c...

Страница 30: ...n made successfully the leak test is carried out with dry nitrogen Leak testing involves spraying a leak detection spray onto the connections If bubbles are visible the connections have not been made...

Страница 31: ...bal warming than those with a high greenhouse potential This unit contains refrigerant with a greenhouse potential of 675 That means the escape of 1 kg of this refrigerant has an effect on global warm...

Страница 32: ...drainage line is laid to protect it against frost The lower part of the housing and condensate tray is also to be kept frost free in order to ensure permanent draining of the condensate If necessary...

Страница 33: ...y that they are seated correctly and make permanent contact Tighten as required 7 2 Connecting the indoor unit n We recommend that a mains repair switch be installed near the outdoor unit n The termin...

Страница 34: ...electrical connection diagram 4 Fix the line in the strain relief and re assemble the unit Fig 38 Connecting the outdoor unit 7 4 Electrical wiring diagram Connection ML 265 DC 685 DC B A 230V 1 50 Hz...

Страница 35: ...N PE L N PE L N WH BK PE A B C 1 2 3 W 1 L 2 N S PE W 1 L 2 N S Fig 40 Electrical wiring diagram A Outdoor unit B Indoor unit C KP6 KP8 condensate pump 1 Power supply cable 2 Condensate pump supply 3...

Страница 36: ...OUT L IN N IN Cn31 Blau Blue CN 24 CN 33 CN 22 CN 19 CN 27 CN 18 B Fig 41 Electrical drawings A Control board B Display circuit board C Control line from outdoor unit 1 DC fan motor 2 Engine trim LED...

Страница 37: ...ck Gelb oder Schwarz Braun Brown Yellow and Green Gelb und Gr n Fig 42 Electrical drawings A Control board B Power supply cable C Lines to indoor unit 1 Reversing valve 2 Crankcase heating 3 Condensat...

Страница 38: ...N 414 M W V U CN 13 CN 12 Blau Blue CN 1 CN 10 L OUT RY 1 9 Fig 43 Electrical drawings A Control board B Power supply cable C Control line to indoor unit 1 Condensate tray heating 2 Crankcase heating...

Страница 39: ...G CN6 1 Y G Rot 1 L 2 N S L N Blau Schwarz L N W 3 CN16HEAT CN5 Rot Schwarz Fig 44 Electrical drawings A Control board 1 Supply line to the indoor unit 2 Power supply cable 3 4 way valve optional 4 Cr...

Страница 40: ...ed Fig 48 Terminals Terminal 5 V Non functional Terminals switch 1 2 For this function you must first jumper remove at the multifunction board Potential free contact for switching the unit off externa...

Страница 41: ...ding settings see Fig 51 Fig 50 DIP switch Fig 51 DIP switch settings The factory setting is programmed to address 0 The DIP switch S1 specifies the address range e g both switches to OFF address 0 15...

Страница 42: ...indoor unit and outdoor unit when commissioning the entire system Once all the components have been connected and tested the system can be put into operation A functional check should be performed to...

Страница 43: ...ximum fan speed and lowest target temperature 8 Check the overheating outside inside outlet and vaporisation temperatures and record the measured values in the commissioning report Check the correct f...

Страница 44: ...f indoor unit and outdoor unit Electrical surges caused by thunderstorms Have there been light ning strikes in the area recently Switch off the mains breaker and switch it back on Have it inspected by...

Страница 45: ...d the pump not running Call out a specialist to replace the pump Condensate has not drained away and has collected in the conden sate drainage line Is there an incline on the condensate drainage line...

Страница 46: ...r actuation error P1 Over voltage or under voltage error P2 Compressor overheating protection heat gas temperature too high P4 Inverter control disabled EC No cooling capacity after 30 minutes CP No e...

Страница 47: ...fluctuate between 25 V and 25 V NO Check electrical connections in the indoor unit Are they OK YES YES Check electrical connections in the outdoor unit Are they OK Replace the control boards of the in...

Страница 48: ...erates normally YES De energise the unit and attempt to turn the fan wheel by hand Does it rotate freely NO Check the motor and the fan wheel bearing and replace the defective parts YES Check the elec...

Страница 49: ...se differ there is a problem with the control board and it must be replaced 1 3 4 5 6 Fig 53 Motor measurements Terminal Colour Voltage 1 Red 280V 380V 2 3 Black 0 V 4 White 14 17 5V 5 Yellow 0 5 6V 6...

Страница 50: ...ing circuit blocked n Evaporator probe T2 defective n Indoor unit control board defective Switch off voltage switch on again 2 minutes later Is the error still present YES Check whether the indoor uni...

Страница 51: ...ction faulty n Temperature probe defective n Control board defective Check the connecting cable between the con trol board and the temperature probe Is it OK and correctly connected NO Establish a pro...

Страница 52: ...ect supply voltage YES Check the cooling circuit for any blockages Is the cooling circuit OK NO Remove the blockage shut off valve open YES Check the winding resistances of the com pressor Are they OK...

Страница 53: ...on page 53 Error rectified NO Replace the control board YES Check the condenser fan motor Is it working correctly NO See troubleshooting fault F5 YES Check the winding resistances of the com pressor A...

Страница 54: ...eck the electrical connections Are they OK NO Replace the electrical connections YES Switch the power on and put the unit into standby mode Measure the voltage on the board at contacts P and N This sh...

Страница 55: ...ey blocked or dirty YES Clean the filter or heat exchanger and ensure a sufficient air flow volume NO Switch off the power supply to the unit and switch it on again after 10 mins Does the unit start u...

Страница 56: ...these cor rectly implemented YES Establish a proper connection NO Check the inverter controller Is this functional NO Replace the control board YES Check the condenser fan motor Is this OK NO Follow...

Страница 57: ...13 5 26 88 37 5 87 6 25 50 38 5 63 7 24 19 39 5 40 8 22 57 40 5 18 9 21 81 41 4 96 10 20 72 42 4 76 11 19 69 43 4 57 Temp C Resistance kW Temp C Resistance kW 44 4 39 79 1 21 45 4 21 80 1 17 46 4 05 8...

Страница 58: ...4 11 104 6 6 247 8 12 99 69 5 234 9 13 95 05 4 222 8 14 90 66 3 211 4 15 86 49 Temp C Resistance kW Temp C Resistance kW 16 82 54 51 18 96 17 78 79 52 18 26 18 75 24 53 17 58 19 71 86 54 16 94 20 68 6...

Страница 59: ...113 2 56 91 4 85 114 2 49 92 4 70 115 2 42 93 4 56 116 2 36 94 4 43 117 2 29 95 4 29 118 2 23 96 4 17 119 2 17 97 4 05 120 2 12 98 3 93 121 2 06 99 3 81 122 2 01 100 3 70 123 1 96 101 3 60 124 1 91 10...

Страница 60: ...that you take out a mainte nance contract with an annual service from an appropriate specialist firm This enables you to ensure the operational reli ability of the plant at all times NOTICE Statutory...

Страница 61: ...so turn the dirty side so it is facing upwards 5 Dirt can also be removed by carefully cleaning with lukewarm water and mild cleaning agents Fig 58 The dirty side should be face down 6 If water is us...

Страница 62: ...rical power supply to the unit 4 Cover the unit as far as possible with plastic foil in order to protect it from the influences of weather Permanent shutdown Ensure that units and components are dispo...

Страница 63: ...Indoor unit 11 6 4 9 10 13 12 1 3 7 8 5 2 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Fig 59 Exploded view of the unit ML 265 DC 685 DC IT We reserve the right to modify the dimensions and desi...

Страница 64: ...rd 11 IR remote control 12 Room temperature probe T1 13 Temperature probe evaporator T2 14 Housing front 15 Plastic covering terminal block 16 Plastic covering board 17 Housing part electronics module...

Страница 65: ...nit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 17 18 16 21 19 15 20 22 Fig 60 Exploded view of the outdoor units ML 265 DC 685 DC AT We reserve the right to modify the dimensions and design as part of the ongoi...

Страница 66: ...r bracket 6 Corner panel 7 Housing cover 8 Base plate 9 Partitioning panel 10 Air probe condenser 11 Condenser 12 Condenser pipe placement probe 13 Inductor 14 Control board 15 Shut off valve injectio...

Страница 67: ...s 22 Intended use 7 K Keys on the remote control 15 M Maintenance 60 Manual mode 14 Minimum clearances 24 Multifunction board connection 40 O Oil return measures 27 Ordering spare parts 64 66 P Propel...

Страница 68: ...5232 606 260 E mail info remko de URL www remko de REMKO GmbH Co KG Klima und W rmetechnik Im Seelenkamp 12 32791 Lage Hotline within Germany 49 0 5232 606 0 Hotline International 49 0 5232 606 130 W...

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