TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”.
28
Noisy Water Heater - Chart 5
5
Fan loose on motor shaft
Remove assembly and tighten
Fan motor faulty - Replace
Is the
noise water
hammer?
NO
NO
Is the
noise only evident
when water is flowing
through the
heater?
YES
Cylinder contracting due to pressure
release when hot tap opened
This can also be accompanied by a
creaking or cracking sound
Normal Operation
NO
Check for restrictions in pipe work, faulty
valves, loose plumbing or other
appliances i.e. washing machine or
dishwasher
Fit 600kPa pressure limiting valve
YES
Is
the noise
mechanical or air
related?
Normal noise level during operation is
approximately 59dB at 1.5 metres
If this level is affecting neighbors a timer
should be fitted to prevent operation
during the affect hours or to comply with
local council regulations
AIR
Is the
noise from the
evaporator
fan?
Is the
noise only evident
during the heating
cycle?
Check for loose fittings or pipe work in
the refrigeration system
Check for possible mechanical failure in
compressor
YES
Is the
water pressure
more than 80% of the
T&PR valve
rating?
Check all other appliances or valves that
can generate noise i.e. washing
machines, dishwashers, ball valves etc
NO
YES
Mechanical
Refer to water hammer causes in the
‘Common Complaints’ section
Check for a faulty stop cock, non-return
valve or T&PR valve
NO
Is the
noise a
metallic popping
sound?
YES
NO
YES