Fault Finding Chart 2 - Rheem TM039 Service Instructions Manual

Fault Finding Chart 2

2
Has the usage
pattern changed
recently, ie.additional
appliances or people
using hot water?
NO
Is the T&PR
valve continuously
discharging
water?
NO
Are there any plumbing
leaks,
crossed connections
or dripping taps?
NO
Measure the water temperature at the T&PR
valve drain by gently lifting the easing lever
Does the cylinder
water temperature
correspond with the
thermostat setting?
YES
Is the transfer valve
allowing water to pass in
both directions?
NO
Is a tempering valve
installed?
TM039 Rheem Water Star Service Instructions REV: A
Date of Issue: 02/09
This document is stored and maintained electronically by
High energy bill/ Insufficient hot water
Is the heater of
sufficient size for the
YES
customer‟s ongoing
needs?
Is the water supply
pressure more than 80%
YES
of the T&PR
valve rating?
NO
Is the correct T&PR valve
fitted?
YES
Has there been a recent
NO large draw off of hot
water
YES
NO
fixtures used for ablution purposes to
YES
14
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
Refer to Rheem sizing guide
NO
YES
YES
NO
YES
NO
YES
AS/NZS 3500 Part 4 only requires
be tempered. If practical a 2-zone
plumbing solution may be offered.
Recommend a water heater
of sufficient capacity to meet
the customer‟s needs.
Recommend a hot water
usage pattern that will suit
the water heater and the
customer‟s needs.
Fit pressure limiting valve
(PLV), if not already installed.
Replace faulty PLV. Replace
faulty T&PR valve.
Replace T&PR valve with one
with the correct pressure
rating. Do not use
reconditioned T&PR valves.
Check for cross water
connection. Replace the
T&PR valve (if required.).
Repair any leaks. Isolate
cross connections.
Replace the thermostat
Allow heater time to recover
Replace the transfer valve
Water Star OK. Possible fault
with continuous flow gas water
heater. (Refer to relevant
service instructions).
Possible fault with tempering
valve