REMKO MXD 200 v.3 - Manual (Page 18)

Fault Possible cause Check Remedial measures
The unit is running
with reduced or
without cooling or
heating output
Filter is dirty / air inlet / outlet
opening is blocked by by debris
Have the filters been cleaned? Clean the filters
Doors and windows open /
heating or cooling load was
increased Have there been any
constructional / application-
related changes?
Close doors and windows /
install additional systems
Neither cooling nor heating
mode has been set Does the "cooling / heating"
symbol appear in the display?
Correct the settings for the unit
Fins of outdoor unit are blocked
by debris
Is the fan on the outdoor
unit running are the fins
unobstructed?
Check fan or winter regulation,
reduce air resistance
Leaking refrigerant circuit
Are there signs of frost on the
fins of the indoor unit?
Repair by a specialist
Condensation
output on the unit
Drain pipe of the collection
container blocked / damaged Is unobstructed condensation
drainage ensured? Clean the drainage pipe and
collection container
Faulty external condensation
pump or float
Is the condensation pan full
of water and the pump is not
working?
Call out a specialist to replace the
pump
Condensation has not drained
away and has collected in the
condensation line
Is the condensation line routing
sloped downhill and is it clear?
Route the condensation line in
a downhill slope or clean it if
necessary
Condensation does not drain
off
Are the condensation lines
unblocked and is there a steady fall?
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.
Leaking refrigerant circuit
Are there signs of severe frost
on the large stop valve?
Repair by certified service centre.
Problem display by blinker code
Display Cause Required action
E0 EEPROM error
Switch off the power to device for
1 min.
Contact specialist dealer
E1 Communication error between outdoor unit and indoor unit Contact specialist dealer
E2 Phase monitoring has responded Check wiring
E3 Evaporator fan motor speed too low / defective Contact specialist dealer
E5 Sensor discharge hot gas AT faulty / connection interrupted Check connection and plug
E6 Sensor recirculated air IT faulty / connection interrupted Check connection and plug
P0
Rotational speed monitoring on compressor has responded
(Inverter module)
Check connections CN4, CN1 on the AT
PCB / contact specialist dealer
P1 Overvoltage protection AT tripped (250V) Check the voltage of the mains cable
P2 Excessive temperature (Klixon) compressor has tripped
Check refrigerant
Check the resistance of the compressor
sensor (normal 0 Ω)
P3 Overcurrent compressor has responded
Check winding resistance of the com-
pressor (1 Ω = U-V / U-W / V-W)
REMKO MXW
18