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EN Faults and remedies
Fault
LED
flashes
repeatedly once.
Pump switches off.
LED
flashes
repeatedly twice.
Pump switches off.
LED
flashes
repeatedly 3 times.
Pump switches off.
LED
comes on.
Pump switches off or
does not run as
planned (Fig. 2).
Pump not running
Pump makes noises.
No night setback
Radiators dot not
become warm
Technical assistance is available from your heating and plumbing specialists and
►
from Deutsche Vortex.
22
Cause
Air in the system.
„
Motor loses commutation.
„
Overheating.
„
Internal fault.
„
Power supply is interrupted.
„
Motor faulty (electrics/
„
electronics).
Rotor blocked by deposits.
„
Air in the system.
„
Cavitation.
„
Pump too strong.
„
Pump installed in return line.
„
Night setback not activated.
„
Pump too weak.
„
Air in the system.
„
Night setback is activated.
„
Remedy
►
Wait for automatic reset.
►
Perform manual reset, press button 1
(see Fig. 1).
►
Vent pump (see p. 12).
►
Perform manual reset, press button 1
(see Fig. 1).
►
Wait for automatic reset.
►
Change operating mode (see p. 16).
►
Replace the pump if the fault is not
remedied.
►
Ensure correct power supply.
►
Replace pump.
►
Perform manual reset, press button 1
(see Fig. 1).
►
Vent system (see p. 8 and 12).
►
Check system pressure and temperature
(see p. 7).
►
Select lower speed (see p. 16).
►
Install pump in the feed line (see p. 8).
►
Activate night setback (see p. 18).
►
Select higher speed (see p. 16) or install
stronger pump
►
Vent system (see p. 8 and 12).
►
Switch off night setback (see p. 18).
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