REMKO LWM IM 300, Инструкция по эксплуатации и установке, Страница: 32 / 40

14 Troubleshooting and customer service
14.1 General troubleshooting
The unit has been manufactured using state-of-the-art production methods and has been tested several
times to ensure that it works properly. However, in the event that malfunctions should occur, the unit should
be checked against the following list. Please inform your dealer if the unit is still not working correctly after all
of the functional checks have been performed.
Malfunction Possible causes Remedial measures
The heat pump does
not start or switches
itself off
Power failure, under-voltage
Check the voltage and, if necessary,
wait for it to come back on
Defective mains fuse/main switch
turned off
Exchange mains fuse, master switch on
Damaged power supply Repair by specialist firm
Power company off-period
Wait until the power-company off-period
is over and the heat pump starts up as
required
Operational temperature limits too low
or too high
Observe temperature ranges
Nominal temperature exceeded, incor-
rect operating mode
The set-point temperature has to be
higher than the
heat generator temperature, check
mode
Disconnect the outdoor unit, then
establish the correct terminal sequence
using the connection plan. Re-establish
voltage to the outdoor unit. Also make
sure that the protective earth is con-
nected correctly
Heating cycle pump
does not switch off
Incorrect pump switching action
Have pump switching of the "heating
cycle" checked out at specialist level
Heating cycle pumps
fail to switch on
Incorrect operating mode set Check mode
Control board fuse in indoor units
switching cabinet faulty
Exchange the fuse on the left side of
the control board
Incorrect heating program set
Check heating program. In the cold
heating period, we recommend the
‘heating’ operating mode
Temperature overlapping, e.g. outside
temperature greater than room temper-
ature
Check temperature ranges.
Sample test!
Red warning triangle
flashes
System malfunction
See error messages (depending on
code ID) in the Smart Control Touch
operating instructions
REMKO LWM series
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