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”
23
Hot water tap closed
Operational Flow Chart 3
G.I.S.V (SVO) off
or
[S.V. 1-2 (SV1-2) off]
YES
YES
NO
YES
Approx. 6 minutes later
P.G.F.R Valve at
minimum
4
5
Post Purge Shut Down Function
Water flow sensor off
Check gas cut off function by
alternating the closing order of
gas valves SVO and SV1-2 at
each shut down
Fan motor at minimum
I.U.I off
S.V. 1-2 (SV1-2)
failure
80(F) Flashing
8 seconds later
NO
G.I.S.V (SV0) failure
51(F) Flashing
G.I.S.V (SVO) off
[S.V. 1-2 (SV1-2) off]
P.G.F.R Valve off
Fan off
YES
Abnormal combustion
NO
99(G) Flashing
Fan off
Isolate power
Locate and repair fault.
Refer to procedure on page
23 to clear error code 99.
S.V. 1 (SV1) off
S.V. 2 (SV2) off
Fan off
G.I.S.V (SV0) off
P.G.F.R valve off
Isolate power
Locate and repair fault
and restore power
10 seconds later
10 seconds later
Flame current
detected less than
0.1uA?
Fan motor speed
checked during
operation?
Fan
motor current check
ok?
Note: Refer to page 20 for details on interpreting chart abbreviations. Refer to page 27 for details on interpreting LED flashing pattern.