050406.01
11
vetus®
Automatic demand water pressure pump WP
ENGLISH
5 Trouble shooting
W
arning
Disconnect the power and drain the system be-
fore beginning work on the pump!
Problem
Possible cause
Solution
Motor runs but
there is no flow of
water.
Empty water tank
Fill the tank or disconnect the
power to the pump.
Inlet / outlet tube restriction.
Remove restriction.
Strainer clogged with debris.
Clean strainer.
Leak in the suction pipe.
Tighten the hose clamps and check
the fittings.
Motor does not
run
No power on pump circuit.
Check wiring, fuse or circuit
breaker.
Loose or corroded electrical con-
nections.
Check the electrical connections.
Short circuit in wiring.
Check condition of wires.
Thermal protection of motor has
been activated (motor is too hot).
Wait until there is an automatic
reset.
Faulty motor.
Replace pump.
Faulty pressure switch.
Replace pressure switch assembly.
Locked drive.
Replace pump.
Pump continues
to run after all taps
have been closed.
Empty water tank
Refill.
Pump cycles while
tap is closed.
Leak in the system.
Tighten leaking hose clamps /
fittings.
Faulty pressure switch.
Replace pressure switch assembly.
Incorrect voltage.
Check voltage (± 10 %).
Air trapped in system.
Open a tap as close to the pump as
possible.
Leak in outlet tubing.
Check plumbing for leakage.