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Cont ...
7 TROUBLE SHOOTING GUIDE
Symptoms
Probable Cause
Recommended Action
Pump will not start.
No water.
Check required flow of liquid is available to the fittings of
approx. 0.6 l/min.
Water supply.
Check water supply from mains and all stopcocks are open.
Electrical supply.
Check wiring connections.
If flow exists inline with requirements - check that all electric
switches are on.
Is the correct fuse fitted?
Check circuit breaker is set.
Faulty reed switch/PCB
Refer to circuit test as detailed in Fig. 5.
Internal motor thermotrip
activated.
Wait for thermotrip to auto reset and check that duty point
and run time is within specification (see Technical Section).
Pump starts when outlets are
off.
or
Pump cycles (hunts) on/off
frequently.
Leak in system
Check tap washers, w/c valve washers, pipe joints.
Pump runs on when all terminal
outlets are closed.
Leak in system.
Check tap washers, w/c valve washers, pipe joints.
Reed clamp out of position.
Ensure reed clamp is fitted correctly in location groove
(Fig. 5).
Jammed flow switch.
Remove flow switch reed clamp whilst pump is running. If
pump stops proceed to isolate the pump electrically and
hydraulically and remove brass housing that contains float.
Check for free movement.
Faulty reed switch or P.C.B.
Remove flow switch reed clamp whilst pump is running.
If pump continues to run, this indicates a closed circuit in
either the flow switch reed or P.C.B. in the terminal box, these
should be checked electrically.
