REMKO CMF-80 v.1 - Manual (Page 11)

Troubleshooting
The unit has been manufactured using state-of-the-art production
methods and tested several times to ensure its correct function. However,
in the event that malfunctions should occur, the device 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.
Control lamp Meaning Remedy
red Heat pump fault
briefly switch the plant off and wait for restart /
inform your specialist dealer or engineer
yellow Flow monitor fault
Check the function of the condenser pump or
flow monitor / check system pressure and flow
white Energy supply company off-period
The heat pump can be configured to switch
on automatically as required according to
a contractually regulated power off period.
Fault Possible causes Remedy
The heat pump does
not start or switches
itself off
Power outage, undervoltage
Check the voltage and, if necessary, wait for it
to come back on
Defective mains fuse
Master switch off
Exchange mains fuse, switch master switch on
Power cable damaged Repair by specialist firm
Energy supply company off-period
Wait until the off-period is over and the heat
pump starts up as required
Operational temperature range too
low or exceeded
Observe temperature ranges
Setpoint temperature exceeded
Incorrect mode
The setpoint temperature has to be higher than
the heating appliance temperature, check mode
Heat circuit pump
fails to switch off
Incorrect pump switching
Arrange to have pump switching checked in
"heating circuit" expert level
Heat circuit pumps fail
to switch on
Incorrect mode set Check mode
Fuse on control PCB in indoor
module switching cabinet faulty
Exchange the fuse on the left side of the
control PCB
Incorrect heating program set Check heating program
Temperature overlapping, e.g.
external temperature greater than
room temperature
Observe temperature ranges
NOTE
During the power plant
operator off period, "Info 55"
is displayed (heat pump off
period).
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