Specifications

TM040 16, 18 & 20L Continuous Flow Gas Water Heater Service Instructions
D.O.I: 2/06/2009
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
29
Fault Diagnosis Sequence
Does the remote control
power up if the on/off button
is depressed?
Follow the „Power Supply Fault
Finding‟ flow chart
NO
Is an error code displayed?
YES
Follow the fault finding flow chart
for the error code displayed
YES
Open a hot tap
NO
Did the fan commence
operation?
Follow the „No Error Code Fault
Finding‟ flow chart
NO
Is an error code displayed?
YES
Follow the fault finding flow chart
for the error code displayed
YES
Follow the fault finding flow chart
for the error code displayed
Does the burner light
NO
Is an error code displayed? NO
NO
Ignition Retry
Close the hot tap
Is an error code displayed?
YES
YES
NO
Is an error code displayed?
Follow the fault finding flow chart
for the error code displayed
YES
Heater operation appears to be
normal
NO
Is remote controller fitted?
YES
It is recommended that a remote
controller be fitted to assist fault-
finding.
NO
Ensure power is turned on.
If a remote control is unavailable, fault diagnosis can
be made via the red LED on PCB (refer to pages 19
& 22 for LED flashing pattern information).
YES
The red LED on PCB can only supply limited information. For specific fault identification use a controller.