Specifications

TM025 Rheem Heat Pump Service Instructions REV: B
Date of Issue: 02/08/07
This document is stored and maintained electronically by
Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”.
42
Fault Finding – Chart 6
6
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 52dB at 1.5 metres.
If this level is affecting neighbors a timer
should be fitted to prevent operation
during the affected 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
Noisy water heater