Troubleshooting
Guide
24|
Page
CHECKING
THE
OVERHEAT
CUTOFF
FUSE
(OHCF):
1)
Locate
the
white
OHCF
which
wraps
around
the
heat
exchanger.
2)
Find
the
white
clip
at
the
end
of
the
two
blue
braided
wires
coming
from
the
OHCF.
3)
Unplug
the
connection.
4)
Test
for
continuity
at
the
end
of
the
OHCF
with
an
ohmmeter.
If
there
is
continuity,
the
OHCF
is
still
intact.
Reconnect
the
plug.
If
there
is
no
continuity,
the
OHCF
has
been
compromised.
If
compromised,
contact
the
Technical
Service
Department
for
further
assistance.
5)
If
an
ohmmeter
is
not
available,
jump
the
plug
connection
on
the
opposite
side
of
the
OHCF
with
a
wire,
paper
clip,
or
other
metal
material.
6)
Restore
power
and
test
unit.
Be
very
cautious
with
this
step.
Do
not
touch
the
jumper
or
other
electrical
components.
7)
If
the
unit
fires
up,
it
shows
that
the
OHCF
has
been
compromised
and
the
problem
was
with
the
OHCF.
If
so,
contact
the
Technical
Service
Department
for
further
assistance.
If
the
unit
does
not
fire
up,
it
shows
that
the
cause
of
the
111
or
121
error
code
is
something
else.
Continue
with
the
111
or
121
error
code
sections
of
this
guide
for
further
troubleshooting.
Figure
23
Figure
22
