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Troubleshooting and Customer service

The units and components are manufactured with the most up-do-date manufacturing methods and are checked 
several times for proper function. However, should a functional problems occur, please check the function 
according to the chart below. When all functional checks have been completed and the unit still does not work 
properly, please contact your dealer!

Problem

Possible cause

Check

Remedy

The unit does not start or does 
not turn off by itself.

Power failure, low voltage, main 

fuse defective / main switch 

turned off.

Are all other electrical devices 

working?

Check voltage, possible wait until 

turned on again.

Power line damaged.

Are all other electrical devices 

working?

Repair by certified service center.

Waiting time after turn on too 

short.

Have 5 minutes passed after 

restart? 

Plan for longer waiting period.

Operating temperature fallen 

below / exceeded.

Do the fans on interior unit and 

exterior unit work?

Observe temperature ranges of 

interior unit and exterior unit.

Power surge due to thunderstorm. Were there any lightning strikes 

nearby lately?

Shut off main fuse and turn on 

again.  

Inspection by certified service 

center.

Problem of external condensation 

pump.

Did the pump turn off due to a 

problem?

Check or clean the pump, if 

necessary.

The unit does not react to 
remote control.

Transmission distance too large / 

receiving problem.

Is there a signal sound on the 

interior unit when pressing the 

button?

Reduce the distance to less than  

6 m and change location.

Remote control is defective.

Is the unit working in manual 

operation?

Replace remote control.

Receiver and transmitter are 

exposed to too much sun 

exposure.

Is it working in shade?

Shade the transmitter and receiver.

Electromagnetic fields disrupt the 

transmission.

Is it working after turning any 

possible interfering sources off?

No signal transfer at simultaneous 

operation of interfering sources.

Button of  remote control stuck / 

dual button control.

Does the “Send” symbol appear in 

the display?

Release the button / press only 

one button.

Batteries of remote control are 

discharged.

Have new batteries been inserted? 

Is the display incomplete?

Insert new batteries.

The unit works at reduced or 
no cooling output.

Filter is dirty / air inlet / outlet 

opening is blocked by debris.

Have the filters been cleaned?

Clean filters.

Windows and doors are open. 

Heating or cooling load has 

increased.

Have there been any 

constructional / user changes?

Close windows and doors  / install 

additional systems.

No cooling operation is set.

Is the cooling symbol in the 

display activated?

Correct the adjustment of the unit.

Fins of the exterior unit are 

blocked by foreign matter.

Does the fan of the exterior unit 

work? Are the evaporator fins 

clear?

Check fan or winter regulation, 

reduce air resistance.

Leaks in refrigerant circuit.

Is frost formation visible on 

connections of the exterior unit?

Repair by certified service center.

Condensation discharge on unit.

Drain pipe of collector reservoir 

plugged / damaged.

Is unrestricted condensation 

discharge ensured?

Cleaning of drain pipe and 

collector reservoir.

External condensation pump or 

floater defective.

Is the catch pan full of water and 

the pump is not working?

Have pump replaced by certified 

service center.

Non-discharged condensation is in 

the condensation line.

Is the condensation line routed 

downward or not plugged?

Route the condensation line 

downward or clean it.

Condensation cannot be 

discharged.

Are the condensation lines clear 

and routed downward? Does the 

condensation pump and the floater 

switch work?

Route the condensation line 

downward or clean it. If the floater 

switch or the condensation pump is 

defective, have them replaced.

Functional problem

REMKO ATY

16

Summary of Contents for ATY 260

Page 1: ...Edition GB T08 REMKO ATY ATY 260 ATY 350 Wall room air conditioner in split design Operation Technology Spare parts...

Page 2: ......

Page 3: ...recycling 4 Warranty 4 Transport and packaging 5 Product description 5 Operation 6 13 Shut down 14 Care and maintenance 14 15 Troubleshooting and customer service 16 17 Assembly instructions for tech...

Page 4: ...can cause malfunctions The units and components may not be operated in areas with increased danger of damage The minimum clearances must be observed The electrical power supply must be matched to the...

Page 5: ...tor evaporator fan regulation and condensation pan Floor consoles wall consoles refrigerant lines and condensation pumps are available as accessories Unit description The units are delivered in strong...

Page 6: ...stomer service Note Replace discharged batteries immediately with a new set to prevent battery leakage For longer down times we recommend removal of the batteries Note Display on interior unit The dis...

Page 7: ...rature 4 Air circulation mode In this mode the air in the room is recirculated 5 Dehumidification mode In this mode the room is mainly dehumidified the adjusted temperature is retained FAN button With...

Page 8: ...and heating mode In automatic mode the fixed temperature is reduced with the button from 24 C by 1 or 2 C and increased by 1 or 2 C with button The current setting is shown next to the temperature dis...

Page 9: ...s the cooling function off To protect the compressor the regulation only turns the cooling on again after a waiting period of 3 minutes Cooling mode COOLING OPERATION MODE In the air circulation mode...

Page 10: ...illating function The air distribution in the room is improved with the swing function SWING button covered SWING SWING SWING The fan speed can be adjusted with this button A selection can be made bet...

Page 11: ...IMER button several times the turn on the turn off and the combined turn on and off timer is activated The turn on or turn off time blinks The timer display on the interior unit lights up The desired...

Page 12: ...the timer can be set to 30 minutes 1 hour 2 hours 3 hours or 5 hours The current time is replaced by the still remaining time OFF OFF OFF With this button the air volume flow in cooling and heating o...

Page 13: ...t the nominal temperature does not change DISP button covered DISP C C The unit is equipped with an ion generator to create negative ions A high concentration of negative ions is found for example in...

Page 14: ...isconnected CAUTION Care Keep the interior unit and the exterior unit free of dirt plant covers and other deposits Clean the units only with a damp cloth Do not use harsh abrasive or solvent containin...

Page 15: ...an with lukewarm water 2 Open the lower display cover on the front side of the unit by pressing both latches and carefully fold the cover downward and remove it from the bracket Fig 3 3 Push the clips...

Page 16: ...e transmission Is it working after turning any possible interfering sources off No signal transfer at simultaneous operation of interfering sources Button of remote control stuck dual button control D...

Page 17: ...r circulation sensor on interior unit is defective triggered Contact dealer E3 blinks Antifreeze sensor interior unit defective triggered Contact dealer E4 blinks Evaporator fan motor speed too low de...

Page 18: ...rs then refrigerant has to be added For the quantity of additional refrigerant refer to chapter Add refrigerant Only use the union nuts for the refrigerant lines provided in the delivery scope and rem...

Page 19: ...he ground Rain For attic or roof set up the unit should be installed with at least 10 cm ground clearance A floor bracket is available as optional equipment Sun The evaporator fins of the exterior uni...

Page 20: ...ugh opposite sufficiently large air openings Fig 7 Minimum clearances The minimum clearances are to be provided for maintenance and repair work and for optimum air distribution ATY 260 AT ATY 350 AT A...

Page 21: ...ow 8 Recheck the horizontal alignment of the unit 9 Reassemble the unit Installation of the interior unit The wall bracket for the unit must be attached with suitable screws and anchors Installation T...

Page 22: ...ention to the installation instructions for the brackets 6 Make sure that no body vibration is transferred to part of the building Body vibration transfers are reduced by vibration dampers 7 Remove th...

Page 23: ...f the interior unit and the length of the refrigerant lines however the procedure takes at least 60 minutes When foreign gases and moisture have been completely removed from the system the valves on t...

Page 24: ...supply to the interior unit and a control line to the exterior unit with appropriate safeguards We recommend to install a main repair switch on the building near the interior unit The power supply is...

Page 25: ...t cover 2 Remove the side wall at the connection 3 Guide the line through the edge protection ring of the fixed connection plate 4 Connect the line according to the wiring schematic 5 Anchor the line...

Page 26: ...s and insulation for damage Check the electrical connection between the interior unit and the exterior unit for correct polarity Check all mountings suspensions etc for proper support and correct leve...

Page 27: ...ant and rework the defective connection In this case a new vacuum and drying procedure is imperatively required 5 Turn the main switch on the building or the fuse on 6 Turn the unit on via the remote...

Page 28: ...AT ATY 350 AT Dimensional and design changes to advance technical progress are reserved ATY 260 IT ATY 350 IT 265 245 532 148 567 567 All measurements in mm All measurements in mm 720 623 495 470 396...

Page 29: ...12 7 Associated interior unit ATY 260 IT ATY 350 IT Operating range C 16 to 32 16 to 32 Adjustment range Cooling C 18 to 30 18 to 30 Adjustment range Heating C 16 to 28 16 to 28 Air volume per stage m...

Page 30: ...05 1107405 7 Air outlet fins set 1107406 1107406 8 Condensation pan 1107439 1107439 9 Fin evaporator 1107408 1107409 10 Fan wheel evaporator 1107410 1107410 11 Fan motor evaporator 1107442 1107443 12...

Page 31: ...22 1107422 3 Fan motor evaporator 1107423 1107424 4 Evaporator fin 1107425 1107426 5 Side section right 1107427 1107427 6 Compressor cpl 1107428 1107429 7 Condenser compressor evaporator fan 1107430 1...

Page 32: ...les staff REMKO staff members in the field are more than just sales people Above anything they are able to advise our customers about cooling and heating technology Customer service Our units operate...

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