REMKO CMF-80 v.2 - Manual (Page 33)

Troubleshooting
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. Please in-
form your dealer if the unit is still not working correctly after all of the functional checks have been performed.
Control lamp Meaning Remedial measures
red Heat pump fault
Briefl y switch the system off and wait for re-
start / inform dealer or installation engineer
yellow Flow monitor fault
Check the function of the condenser pump or
fl ow monitor / check system pressure and fl ow
white Energy supply company off-period
The heat pump can be confi gured to switch on
automatically as required according to a con-
tractually regulated power off period.
Fault Possible causes Remedial measures
The heat pump does
not start or switches
itself off
Power outage, under voltage
Check the voltage and, if necessary, wait for it
to come back on
Defective mains fuse
Main circuit breaker is open Exchange circuit breaker, switch on master
switch
Damaged mains cable Repair by specialist fi rm
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
Heating circuit pump
fails to switch off
Incorrect pump switching
Have the pump switching system checked in
expert mode "heating circuit"
Heating circuit pumps
fail to switch on
Incorrect mode set Check mode
Control PCB fuse 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. out-
door temperature greater than room
temperature
Observe temperature ranges
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