Bedienungsanleitung REMKO MXD350 (Seite 17 von 28) (Englisch)

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Troubleshooting and customer service

Malfunctions

The equipment and components are manufactured using state-of-the-art production methods and tested sev-

eral times to verify their correct function. If malfunctions should occur, please check the functions as detailed in

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

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

functional checks have been performed!

Fault Possible cause Checks Remedy

The unit does not start

or switches itself off

off.

Power outage, undervoltage, defec-

tive mains fuse / main switch in off

position

Are all other electrical installations

functioning correctly?

Check voltage if necessary wait

until turned on again.

Damaged mains cable

Are all other electrical installations

functioning correctly?

Repair by a specialist

Wait time after switching on is too

short

Have approx. 5 minutes

elapsed since the restart?

Schedule longer waiting periods

Temperature outside operating

range.

Are the fans in the indoor unit

and outdoor component working

correctly?

Take into account the temperature

range for the indoor unit and out-

door component

Electrical surges caused by thun-

derstorms

Have there been lightning strikes in

the area recently?

Switch off the mains breaker and

switch it back on. Have it checked

by a specialist

Fault in external condensation

pump

Did the pump shut down due to

a fault?

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 button?

Reduce the distance to less than 6

m or change position

Defective remote control

Is the unit running in manual mode?

Replace the remote control

Receiver or transmitter unit ex-

posed to excessive solar radiation

Does it function correctly in the

shade?

Place the receiver & transmitter unit

in the shade

Electromagnetic ﬁelds are interfer-

ing with transmission

Does it function when switching off

possible sources of interference?

Signal is not transmitted when

interference sources are operational

Button in remote control jammed /

two buttons pressed at same time

Does the “Send” symbol appear

on the display?

Release the button / press only one

button

Batteries in remote control are ﬂat

Have new batteries been inserted?

Is the display incomplete?

Insert new batteries

The unit is running with

reduced or without

cooling / heating output

Filter is unclean / air inlet / outlet

blocked by foreign objects

Have the ﬁlters been cleaned? Clean the ﬁlters

Windows and doors open. Heating/

cooling loads increased

Have there been any structural /

usage-related changes?

Close windows and doors / install

additional units

Neither cooling nor heating mode

has been set

Does the cooling symbol appear on

the display?

Correct the settings for the unit

Fins on outdoor component

blocked by foreign objects

Is the fan on the outdoor com-

ponent running? Are the ﬁns

unobstructed?

Check the fan or winter controller,

reduce the air resistance

Leaking refrigerant circuit

Are there signs of frost on the ﬁns

of the indoor unit?

Repair by specialist

Outdoor component iced up

Check outdoor component.

Has the cassette sensor on the

outdoor component been correctly

positioned?

De-ice and ﬁt the sensor at the

point where the most ice forms

Condensation discharge

on unit

Drainage pipe on collection con-

tainer clogged / damaged

Can the condensation drain off

without any obstruction?

Clean the drainage pipe and collec-

tion container

Faulty external condensation pump

or ﬂoat

Is the collection tray full of water

and the pump not running?

Call out a specialist to replace the

pump

Condensation has not drained away

and has collected in the condensa-

tion line

Is there a steady fall on the con-

densation pipe? Check there is no

blockage in the pipe.

Ensure there is a fall when laying

the condensation pipe and clean

the pipe.

Condensation does not drain off

Are the condensation lines un-

blocked and laid on a slope? Are the

condensation pump and ﬂoat switch

functioning correctly?

The condensation line must have

a fall. If necessary, clean the pipe.

A faulty condensation pump and

ﬂoat switch should be replaced.

Float is stuck or jammed due to

excessive dirt.

Are the LEDs on the receiver unit of

the indoor unit ﬂashing?

Should be cleaned by specialist ﬁrm

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