Troubleshooting
32
│
Page
GENERAL
TROUBLESHOOTING
‐
TEMPER
ATUR
E
and
AMOU
NT
OF
HO
T
WATER
‐
PROBLEM
SOLUTIONS
It
takes
long
time
to
get
hot
water
at
the
fixtures.
The
time
it
takes
to
deliver
hot
water
from
the
water
heater
to
your
fixtures
depends
on
the
length
of
piping
between
the
two.
The
longer
the
distance
or
the
bigger
the
pipes,
the
longer
it
will
take
to
get
hot
water.
The
water
is
not
hot
enough.
Compare
the
flow
and
temperature.
See
the
charts
on
p.
41.
Check
cross
plumbing
between
cold
water
lines
and
hot
water
lines.
Is
the
gas
supply
valve
fully
open?
(p.
25)
Is
the
gas
line
sized
properly?
(p.
18)
Is
the
gas
supply
pressure
enough?
(p.
19)
Is
the
set
temperature
set
too
low?
(p.
28
‐
29)
The
water
is
too
hot.
Is
the
set
temperature
set
too
high?
(p.
28
‐
29)
The
hot
water
is
not
available
when
a
fixture
is
opened.
Make
sure
the
unit
has
120
VAC
/
60
Hz
power
supply.
If
you
are
using
the
remote
controller,
is
the
power
button
turned
on?
Is
the
gas
supply
valve
fully
open?
(p.
25)
Is
the
water
supply
valve
fully
open?
(p.
25)
Is
the
hot
water
fixture
sufficiently
open
to
draw
at
least
0.5
GPM
through
the
water
heater?
(p.
28)
Is
the
unit
frozen?
(p.
30)
Is
there
enough
gas
in
the
tank
/
cylinder?
(For
Propane
models)
The
hot
water
turns
cold
and
stays
cold.
Is
the
flow
rate
enough
to
keep
the
water
heater
running?
(p.
28)
Does
the
recirculation
line
have
enough
check
valves?
(p.
4)
Is
the
gas
supply
valve
fully
open?
(p.
25)
Are
the
fixtures
clean
of
debris
and
obstructions?
Check
if
the
flow
rate
is
too
low.
(p.
28
‐
29)
Fluctuation
in
hot
water
temperature.
Is
the
gas
line
sized
properly?
(p.
18)
Is
the
supply
gas
pressure
sufficient?
(p.
19)
Check
for
cross
connection
between
cold
water
lines
and
hot
water
lines.
