Trouble Shooting Guide - Stuart Turner Monsoon U1.5 bar Twin Installation, Operation & Maintenance Instructions Manual

13 TROUBLE SHOOTIN G GUIDE
13.1 General Guide
Symptoms
Pump will not
start
Reduced/
intermittent flow
No hot water.
Probable Cause
Electrical supply.
Pump Jammed.
Damaged pressure
switch.
Recommended
static inlet/outlet
heads exceeded.
Integral motor
thermotrip
activated.
Incorrect or no
anti-aeration
flange fitted.
Incorrect pipe
sizes.
Blocked inlet
filters.
Hot water
temperature set
too high.
Blocked shower
head spray plate.
Air locked water
feed.
Recommended Action
Check power supply.
Check fuse (see fuse section).
Check circuit breaker is set.
Check wiring connections.
If motor 'Buzzes' switch off power and
contact Stuart Turner.
Turn off power.
Release system water pressure.
Turn on power, pump should start. If NOT
contact Stuart Turner.
Re-position pump (see pump location
section).
Wait for thermotrip to auto-reset and check
that duty point and run time is within
specification (see technical specification).
Check that the installation complies with
installation instructions.
Check for correct pipe sizing, see Section 7
Clean inlet filters (see maintenance section).
Reduce cylinder stat setting to 60 °C max.
Clean in accordance with manufacturers
instructions.
Vent hot water pump of air.
Check cold feed to hot water cylinder.
Check water level in cold water tank and
that all stopcocks and isolating valves are
open.
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