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”
30
Power Supply Fault Finding
Is 240VAC present at the
power point?
No power supply.
Check fuse/circuit breaker/GPO
NO
Is 240VAC present at the
transformers primary
winding?
TEST 1
YES
Check:
Heater internal wiring - repair
Cordset open circuit - replace
Power filter open circuit - replace
NO
Is 90 -110VAC
present at the PCB?
TEST 2
YES
Transformer failed – replaceNO
Can maintenance information
be displayed on remote
controller?
YES
Remote controller cable open
circuit? – replace
Remote controller failed? - replace
NO
YES
PCB failed - replaceNO
When maintenance information
appears but operational lamp
doesn‟t light, replace controller
Is 12V DC present
at the PCB?
TEST 3
YES