Stuart Turner 3.2 bar PS - Manual (Page 15)

- 15 -
TROUBLE SHOOTING GUIDE
Symptoms Probable Cause Recommended Action
Pump will not start. Water supply. Check water level in the supply tank and all stopcocks are
open.
Filter blocked. Remove and clean system filters.
Electrical supply. Check wiring connections.
Check all switches are ‘on’.
Check correct fuse fitted.
Check circuit breaker is set.
Incorrect installation. Check inlet and outlet static heads are within permitted limits
(see pump location section).
Integral auto resetting motor
thermotrip activated. Allow to cool and investigate cause of problem before
restarting.
No hot water. Water feed. Check water level in cold water tank and that all stopcocks
are open.
Boiler is switched off. Check boiler is switched ‘on’.
Check cylinder thermostat.
Check immersion heater.
Check cylinder contains hot water.
Faulty thermostatic mixer valve. Consult makers instructions.
Pump starts when outlets are off. Leak in system. Check tap washers, ball 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. 15).
Faulty reed switch/PCB. Refer to circuit test as detailed in Fig. 15.
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.
Reduced flow/performance. Blocked inlet strainers. Clean inlet strainers (see maintenance section).
Cont ...