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”
22
F F1
Operational Flow Chart 2
I.U.I on
Igniter off
Proportional temperature
adjustment
Gas rate change-over
done by solenoid valves
Hot water volume
adjustment
YES
3
79 (G) Flashing
14 (E) Flashing
31 (E) Flashing 32 (E) Flashing 33 (E) Flashing 34 (E) Flashing
35 (E) Flashing
11 (A) Flashing
12 (A) Flashing
99 (G) Flashing16 (E) Flashing
71 (C) Flashing 76 Flashing
61 (B) Flashing
81 (F) Flashing
65 (G) Flashing
52 (C) Flashing
NO
NO
Fan motor
current detection
failure
YES
O.H.L failure
Outlet water temp
exceeded 97 degrees
for more than 15
seconds
15 (E) Flashing
Water inlet
thermistor
disconnected
Outlet water
temperature too
high
Abnormal
combustion
Heat exchanger
thermistor
disconnected
Flame FailureCross light failure
Thermistor
connections
crossed
Ambient air
thermistor
disconnected
Outlet thermistor
disconnected
G.I.S.V control
failure
Communication
problem between
remote controller and
water heater
Fan failure
Post purge failure
Malfunction of
water volume
control motor
P.G.F.R control
failure
Incorrect
combustion
alarm level?
05 Flashing
YES
Decrease of
fan speed?
(warning)?
10 Flashing
Safety device
working?
NO
15 (E) Flashing
29 (G) Flashing
Heat exchanger
outlet temp too low
Heat exchanger water
temp exceeded 97
degrees for more than
15 seconds
I.U.I off
First ignition
trial?
NO
Ignition failure
after flame failure
P.G.F.R Valve off
G.I.S.V (SVO) off
S.V. 1 (SV1) off
S.V. 2 (SV2) off
Igniter off
E
YES
Note: Refer to page 20 for details on interpreting chart abbreviations. Refer to page 27 for details on interpreting LED flashing pattern.