12
Troubleshooting
This unit has been designed using state-of-the-art manufacturing processes and it has been tested repeatedly to
ensure that it is working properly. However, should problems occur, refer to the following list.
If all functional checks have been performed and the unit is still not operating properly, contact the closest dealer or get in
touch directly with REMKO GmbH & Co. KG.
G
G
The power cord must be disconnected from the power source (fuse and repair switch) and
secured against being accidentally switched on before any work is done on the unit!
Problem
Possible cause
Check
Remedy
The device does not start or
switches itself off automatically.
Power failure, low current, electri-
cal supplier network problems
Are all other electrical components
working? Is the green LED on the
indoor unit blinking? Was the power
supply interrupted temporarily?
After power returns:
RKS 327 to 371: starts again in the
selected mode after 3 minutes.
Defective power fuse / main switch
is off
Are all currents for lighting
functional?
Replace power fuse /
Switch on main switch
Power supply line damaged
Are all other electrical components
working?
Maintenance by authorised service
centre
Amount of time waited after switch-
ing the unit on was too short
Did approximately five minutes
elapse after starting the device?
Schedule longer waiting periods
Temperature during operation is
either too high or too low
Are the fans on the indoor unit and
the outdoor part working ?
Pay attention to the temperature
ranges of the indoor unit and the
outdoor part
Excess current from thunderstorms Was there recently lightning in the
area?
Switch off the power fuse and re-
start / maintenance by authorised
personnel
Problem with the external conden-
sation pump
Did the pump switch trigger an
automatic shut-down ?
Check pump and clean if neces-
sary
Board, fuse or sensors have inter-
nal defect
LEDs for Operation, Pre.Def. or
Timer blinking 5 times per second?
Maintenance by authorised service
center
The indoor unit does not respond
to the remote control.
Timer setting to “On”
Is the timer set?
Delete programming and wait for
the unit to start
New batteries have been incor-
rectly inserted
Are the ends lined up properly?
Insert batteries correctly
Transmission distance is too far /
reception disrupted
Transmission signal when the but-
ton is pressed at a distance of ap-
prox . 3 m ?
Reduce distance to less than 6 m
and change location
Remote control is defective
Does the unit operate in manual
mode?
Replace remote control
The sun is too strong on the re-
ceiver or transmitter
Does the unit work in the shade?
Cover the transmitter or receiver
Electromagnetic fields are disrupt-
ing transmission
Does the unit function after elimi-
nating possible sources of disrup-
tion?
No signal transmission when de-
vices which are potentially disrup-
tive are operated simultaneously
Remote control button is stuck / two
buttons being pressed simultane-
ously
Does this symbol appear on the
display?
Unstick button / only press one
button
Remote-controlled batteries are
dead
Have new batteries been inserted?
Is the display incomplete?
Replace batteries
Temperature setting too high
Is the selected temperature higher
than the temperature of the room?
Lower selected temperature
Dirty filter / input or output opening
blocked by foreign objects
Have the filters been cleaned?
Clean filters
Windows and doors open / In-
creased need for heating / cooling
capacity
Has there been a change in the
design or use of the unit?
Close windows and doors / assem-
ble additional units
“Cool” function not set
Is the cooling symbol ( )
activated on the display?
Correct the unit setting
“Heat” function not set
Is the heating symbol (
)
activated on the display?
Correct the unit setting
Plate fins of the outdoor part
blocked by foreign objects
When the fan of the outdoor part is
running, can the exchanger plate
fins move freely?
Check fan or winter regulation
mechanism, reduce air resistance
Condensation is leaking from the
indoor unit.
Drainage hose of the collection
container is blocked / damaged
Can condensation drain freely from
the unit?
Clean drainage hose and collec-
tion container
External condensation pump or
float regulator defective
Is the collection container full of wa-
ter and the pump is not working?
Have pump replaced by authorised
service centre
The unit is either not cooling/
heating at all or only a little bit.
COOL
HEAT
