Troubleshooting
Guide
13|
Page
ERROR
CODE
031
[510
(T
‐
D2)],
ONE
FLASH/03
[110
(T
‐
KJR2),
310
(T
‐
K4)]
INCORRECT
DIPSWITCH
SETTINGS
1)
Turn
off
the
power
supply.
2)
Remove
front
cover
and
locate
the
dipswitches
on
the
center
of
the
computer
board.
3)
Check
the
dipswitch
settings
on
the
left
and
right
banks.
Refer
to
p.19
for
the
correct
dipswitch
positions.
a.
Gas
type
is
a
common
dipswitch
error.
b.
Most
other
switches
should
be
on
default
setting
UNLESS
the
particular
setup
requires
otherwise.
c.
Easy
‐
Link
systems:
The
master
heater
shall
have
the
number
10
dipswitch
on
the
right
bank
in
the
ON
position
(left).
The
remaining
heaters
(the
slave
heaters)
will
have
the
number
10
dipswitch
in
the
OFF
position
(right)
and
the
communication
wires
will
be
attached
to
the
slave
in/out
plugs.
ERROR
CODE
101[510
(T
‐
D2)],
FIVE
FLASHES/10
[110
(T
‐
KJR2),
310
(T
‐
K4)]
ABNORMAL
COMBUSTION
1)
Blockage
in
the
airway.
Check
the
following
areas:
a.
Venting
length
obstruction
(Birds’
nests,
trash,
etc.)
b.
Backflow
preventer
installed
backwards
c.
Heat
exchanger
d.
Fan
2)
Check
the
manifold
pressure
(p.
22).
Adjust
the
manifold
pressure
to
the
correct
values
if
necessary.
3)
If
intake
air
is
contaminated
with
dust,
lint
(laundry
machine
nearby),
grease
(kitchens),
or
other
contaminants,
clean
the
burner.
See
p.
26
on
procedures
for
cleaning
the
burner
&
rod
assembly.
4)
Weather
related
issues:
high
winds,
frozen
vent
termination
flap,
etc.
5)
Installations
at
altitudes
around
or
over
3000
feet:
Change
dipswitches
on
the
computer
board
for
FM+
modes.
See
dipswitch
explanations
on
page
19.
6)
Make
sure
all
dipswitches
are
set
properly
for
the
type
of
installation.
7)
If
the
cause
of
the
101
error
code
has
been
determined
and
solved,
reset
the
computer
board
to
clear
the
error
code
(p.
23).
ERROR
CODE
111
[510
(T
‐
D2)],
THREE
FLASHES/11
(110
[T
‐
KJR2),
310
(T
‐
K4)]
IGNITION
FAILURE
Heater
does
not
fire
after
three
failed
attempts
at
ignition.
1)
Verify
that
the
hi
‐
limit
switch
is
not
tripped.
Turn
the
power
off
to
the
unit.
Push
the
white
button
in.
The
switch
will
reset
when
you
hear
and
feel
the
button
click.
Turn
the
power
back
on
and
test
the
heater.
If
the
unit
fires
on,
the
cause
of
the
hi
‐
limit
trip
must
be
determined.
Please
contact
the
Technical
Service
Department
for
further
technical
support.
2)
Check
the
gas
supply.
Verify
that
sufficient
gas
is
being
supplied
to
the
heater
and
the
gas
line
is
clear
of
debris
or
any
air.
Purge
the
line
of
air
if
needed
(p.
22).
a.
It
is
possible
there
is
a
faulty
pressure
regulator
at
the
Figure
6
