REMKO EFS 25, Assembly And Operating Instructions Manual

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Error description Cause Remedial measures
The controller does not function
The display is blank or dark The power supply to the controller
is interrupted
n Check the power supply to the
controller
n Check the power supply's fuse
The controller continually displays 12:00
"12" flashes The power supply to the controller
was interrupted for more than 15
minutes
Set the time; saved functions that
are not connected to a time setting
remain set even after an extended
power failure. The circulation (if the
time window "cc" was activated")
and thermal disinfection functions
are inactive
The primary pump does not run even though domestic water is being dispensed
The pump symbol rotates The power supply or control signal
to the pump is interrupted
Check the mains power and control
line to the pump
The pump is stuck Unblock the pump, replace it if nec-
essary
The pump symbol does not
rotate
The domestic hot water maximum
temperature is temporarily
exceeded
This is not an error
n The pump symbol does not
rotate
n
The display is red
n Flashes
Manual operation is switched on,
output R1 is set to 0 (off)
Switch on automatic operating
mode
n The pump symbol does not
rotate
n The display is red
A short circuit or an interruption for
the temperature probe
n Query the current value of the
connected temperature probe
on the controller
n Check the probes and cables
The primary pump runs even though no domestic water is being dispensed
The pump symbol rotates n The comfort function is active
n Thermal disinfection is active
n Circulation is active
n The probe identifies dispensing
n The pump runs due to blocking
protection
n This is not necessarily an error
n Deactivate the functions if nec-
essary
n Probe error E.1 (continual dis-
play of a flow)
n The pump symbol rotates
n The display is red
n
is displayed
Manual operation is switched on,
output H1 is set to > 10%
Switch on automatic operating
mode
The primary pump is running, domestic water is being dispensed, heat is not transported to the
heat exchanger
The pump symbol rotates There is air in the primary circuit Check the primary circuit for air
Shut-off valve closed Check the shut-off valve
The heat exchanger is dirty or
scaled
Flush/clean the heat exchanger
according to the manufacturer's
instructions.
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