TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by
Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
26
Note: see page 24 for details on interpreting chart abbreviations.
F
F
1
G
.
I
.
S
.
V
(
SVO
)
on
11
Flashing
First
ignition
trial
?
11
Operational Flow Chart
3
Igniter on
P
.
G
.
F
.
R Valve off
12
S
.
V
.
1
(
SV
1
)
on
S
.
V
.
2
(
SV
2
)
on
0
.
1
seconds later
13
14
P
.
G
.
F
.
R Valve on
10
G
.
I
.
S
.
V
(
SVO
)
off
Igniter off
S
.
V
.
3
(
SV
3
)
off
P
.
G
.
F
.
R Valve off
S
.
V
.
2
(
SV
2
)
off
S
.
V
.
1
(
SV
1
)
off
C
.
I
.
Off
Flame
Detected
?
Leakage
>
than
0
.
1
uA
NO
3
seconds later
NO
P
.
G
.
F
.
R Valve off
YES
G
.
I
.
S
.
V
(
SVO
)
off
S
.
V
.
1
(
SV
1
)
off
S
.
V
.
2
(
SV
2
)
off
Igniter off
C
.
I
.
on
[
on
]
displayed
Igniter off
YES
Proportional temperature
adjustment
Gas rate change
-
over
done by solenoid valves
Hot water volume
adjustment
Set
temp
.
46
degrees
or lower
?
16
Solenoid bypass
valve off
YES
NO
Low rate
combustion
?
10
Flashing
YES
3
19
79
Flashing
14
Flashing
31
Flashing
32
Flashing
33
Flashing
34
Flashing
35
Flashing
11
Flashing
12
Flashing
56
Flashing
99
Flashing
16
Flashing
71
Flashing
76
Flashing
61
Flashing
81
Flashing
65
Flashing
52
Flashing
Safety
device
working
?
NO
NO
Z
Fan motor
current
detection
failure
YES
O
.
H
.
L failure
Outlet water
temp exceeded
97
degrees for
more than
15
seconds
15
Flashing
Water inlet
thermistor
disconnected
Outlet water
temperature
too high
Malfunction of
water by
-
pass
solenoid valve
.
Abnormal
combustion
Heat
exchanger
thermistor
disconnected
Flame Failure
Cross 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
Abnormal fan
speed
Post purge
failure
Malfunction of
water volume
control motor
P
.
G
.
F
.
R
control failure
Solenoid bypass
valve o
n
821018, 821020, 821026, 871026-B
871024-B , 871024-C
Mechanical Bypass Models