L.B. White AD100 - Manual (Page 25)

F
our Times
If DSI boar
d does no
t reset, then replace the boar
d. (Int
ernal boar
d f
ault.)
If DSI boar
d resets, then ha
v
e
q
ualif
ied electrician check po
w
er sour
ce f
o
r
po
w
er q
uality pr
oblems. (F
req
uency
, line noise, line spik
es, loose connections,
too small wire gauge.)
Fiv
e Times
Rapid On/Of
f
cy
cling of the
burner
.
Flame Sense Degradation. See flame sensor relat
ed pr
oblems in three time flash patt
ern.
(1)
With an
y electrical pr
oblem, all wiring should be check
ed f
or good connections and pr
oper v
oltage and repaired if a pr
oblem
is f
ound.
(2)
IMPOR
TANT
: R
emember
, the ignition contr
ol boar
d sends and receiv
es v
oltages thr
oughout the entire operation seq
uence.
The ignition contr
ol boar
d t
erminals should also be check
ed f
or deliv
ering pr
oper v
oltages, in addition t
o
the individual
com
ponents as indicat
ed b
y the respectiv
e flash patt
ern, t
o
mak
e sure the boar
d itself is w
o
rking pr
operly
.
(3)
In or
der t
o
v
erify the diagnosis of the flashing LED or t
o
reset the unit and retr
y ignition, disconnect the unit fr
om po
w
e
r and
then reconnect t
o
po
w
er or if y
our heat
er uses a thermostat, turn do
wn thermostat belo
w r
oom t
e
m
perature and then turn
thermostat abo
v
e
r
oom t
e
m
perature. When t
esting is com
plet
ed, reset thermostat t
o
desired t
e
m
perature.
(4)
The high-limit switch will open or “trip” f
or a v
ariety of reasons, such as high gas pressure, lo
w v
oltage, e
xcessiv
e dust a
nd
dir
t build-up within the heat
er
, dir
ty f
an assembly
, f
an is no
t tight
ened ont
o mo
tor shaf
t, and obstructions in air inlets or
discharge outlet of heat
er
.
24