Specifications

Stellar Service Instructions REV: D
Date of Issue: 14/09/2007
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”.
23
FAULT FINDING – CHART 6
Noisy Water Heater
6
Is
the noise
only evident when the
main burner is
on?
Check for:
Noisy burner operation due to
incorrect gas pressure or aeration.
Poor quality water supply i.e dam
water sludge - Flush tank
YES
Is
the noise water
hammer?
NO
Refer to water hammer causes on
page 8 common complaints
YES
Is the
noise only
evident when water
is flowing through
the water
heater?
NO
Check all other appliances that can
generate noise i.e. washing machine,
dishwasher, ball cocks etc.
NO
Is
the water
pressure above
1120kPa?
YES
Check for a faulty stop cock,
non-return valve or T&PR valve
NO
Check for restrictions in pipe work,
faulty valves, loose plumbing, other
appliances i.e washing machine or
dishwasher. Fit 600kPa PLV if
pressure excessive.
YES
Is
the noise
only evident when
the pilot is
burning?
NO
Is
the inlet gas
pressure exceeding
the specified
limit?
YES
Incorrect pilot injector fitted:
Replace with correct injector
Pilot injector dirty:
Remove and clean pilot injector
Refer to installer or gas utility
NO
YES