REMKO MVT 600 DC - Manual (Page 10)

The unit has been manufactured using state-of-the-art production methods and tested several times to ensure its
correct function. If malfunctions should occur, please check the unit 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!
Troubleshooting and customer service
Malfunction
The unit is running
with reduced or no
cooling output.
Exchange refrigerant lines
Are the injection pipes and
suction pipes of circuits A, B and
C correspondingly connected?
Check by a specialist
Exchange the electrical control
cable
Are the control pipes and
refrigerant pipes of circuits
A, B and C correspondingly
connected?
Check by a specialist
Air inlet and/or air outlet are
blocked by debris. Debris in air inlet and air outlet
area? Clean the fins.
Reduce the air resistance.
Thermal or wind load
was increased.
Have there been any
constructional / application-
related changes? Reduce the thermal/wind loads
by implementing appropriate
measures.
No heat output possible.
Is the fan on the outdoor unit
running? Fan / winter controller should be
checked.
Leaking refrigerant circuit
Are there signs of severe frost
on the large stop valve?
Repair by a specialist.
Fault Possible cause Check Remedial measures
The unit does not start
or switches itself off.
Power outage, undervoltage
Are all electrical installations
functioning correctly? Check voltage if necessary wait
before switching back on
Defective mains fuse
Main circuit breaker is open Are all lighting circuits
functioning correctly? Replace mains fuse
Close main circuit breaker
Damaged mains cable
Are all electrical installations
functioning correctly?
Repair by a specialist
Waiting time after switch-on too
short Is there a restart after approx. 5
minutes?
Schedule longer waiting periods
Temperature outside operating
range Are the fans in the unit still
working?
Observe the temperature ranges
Occasional overvoltage or
undervoltage
Check by a specialist
Turn the equipment off and back
on
Switch-off contact in external
condensation pump has opened
Is the external condensation
pump on the indoor unit
"faulty”? Clean the condensation pump
drain
Have the pump replaced
The suction pipe and /
or liquid separator on
the compressor have
iced up
Thermal load has increased
Is the outdoor unit running
continuously?
Reduce the thermal load If
necessary, install an additional
device / insulate iced up
components
REMKO MVT
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