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TM090 12-26 Series II CFGWH Service Instructions
REV AB
– Issued February 2019
This document is stored and maintained electronically by Rheem Technical Support. All printed copies
are deemed “uncontrolled”
28
MAINTENANCE INFORMATION
Information relating to both the current and past operation of the water heater can be
obtained from the memory; this information is referred to as the maintenance information.
The table below details the information that can be recalled from the memory i.e. to view the
current temperature being measured by the outlet thermistor select 5Y, refer to page 30 for
the procedure to display maintenance information.
Maintenance Table
Temp. adjust key

(Left digit in LED display (Numerical)
0 1 2 3 4 5 6 7 8 9
Te
m
p Adj
ustin
g
key

R
igh
t
di
gi
t
in LED
di
spl
ay
(
A
lph
ab
etica
l)
E Null Error Code for the previous 8 faults Null
F
Electrification
Years **Years
Sequence number of the previous 8 faults Null
C
Total combustion
starts X 10,000
Total combustion operations since last error X 10,000 hours Null
D
Total combustion
starts X 100
Total combustion operations since last error X 100 hours Null
H
Total combustion
period X 1000 hrs
Total combustion period since last error X 1,000 hours Null
J
Total combustion
period X 10 hrs
Total combustion period since last error X 10 hours Null
Y
Flame
s
e
n
s
o
r
s
ta
tu
s
(R
e
fe
r
p
a
g
e
11
)
W
at
er F
low
S
e
ns
or
Li
tr
es
/
mi
nu
te
A
mb
ie
nt
A
ir
Ther
mi
s
tor
tem
p.
º
C
W
at
er Inl
et
T
h
ermi
s
tor
tem
p.
º
C
Heat
E
x
c
ha
n
ge
r
T
he
rmi
s
tor
tem
p º
C
Hot
W
ate
r O
u
tl
e
t
T
he
rmi
s
tor
tem
p º
C
Fa
n s
pe
e
d
X
10
0 R
P
M
P
ower
for P
.G
.F.R
V
al
v
e
%
Null
O
pe
ni
ng
an
g
le
of
W
at
er Vo
lu
me
C
on
tr
o
l
mo
tor
in
de
gre
es
X
1
0
A
R
e
mot
e
c
o
n
tr
o
l
c
o
n
n
e
c
tion
s
ta
tu
s
ON
:
1
OFF:
0
Null
F
an
M
oto
r
c
urr
en
t
v
al
u
e
-
F
an
M
oto
r
Cur
ren
t
X
10
0m
A
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
S
eq
ue
nc
e
nu
mb
er
P
R
e
mot
e
c
o
n
tr
o
l
c
o
n
n
e
c
tion
s
ta
tu
s
ON
:
1
O
FF
:
0
P
ower
for
P
.G
.F.R.
V
al
v
e
x
10
mA
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
Null
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
F
an
M
oto
r
c
urr
en
t v
al
u
e
-
Null
U
E
x
h
a
u
s
t
s
e
tt
ing
1
:A
2
:B
3
:C
0
:Failur
e
Null Null Null
F
an
M
oto
r
c
urr
en
t
v
al
ue
-
F
an
M
oto
r
c
urr
en
t
v
al
ue
-
Null
B
ath
fi
ll
fl
o
w
x
10
Li
tr
e/
mi
n
ute
F
an
M
oto
r
c
urr
en
t
va
lue
-
Null