Four Times
If HSI boar
d does no
t reset, then replace the boar
d. (Int
ernal boar
d f
ault.)
Ha
ve
q
ualif
ied electrician check po
w
er sour
ce f
or po
w
er q
uality pr
oblems.
(F
req
uency
, line noise, or line spik
es.)
Fiv
e Times
R
ap
id
O
n/
O
ff
C
yc
lin
g
of
th
e
B
ur
ne
r.
See Flame Sensor R
elat
ed Pr
oblems
in “Three Time” Flash Patt
ern.
Six Times
Lo
w Micr
oam
p Output F
or Flame Sensing. Check Micr
oam
p
Output f
or Pr
oper Flame Pr
oving of Flame Sensor
.
(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 HSI 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
orking pr
operly
.
(3)
To
det
ermine if par
t is def
ectiv
e, place a jum
per wire acr
oss the tw
o t
erminals that the wires are connect
ed t
o. Use
the jum
per wire only t
o det
ermine if par
t is def
ectiv
e. R
eplace the par
t IMMEDIA
TEL
Y or do no
t operat
e unit until
pr
operly ser
viced. NEVER
operat
e a heat
er with a jum
per wire used t
o b
ypass a saf
ety de
vice as a t
em
porar
y f
ix.
(NO
TE: The sail switch canno
t be jum
pered prior t
o ignition taking place as the contr
ol syst
em must “pr
ov
e” the
switch contacts close and open during the prepurge cy
cle.)
(4)
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
er 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
te
m
perature and then turn thermostat abo
ve
r
oom t
em
perature. When t
esting is com
plet
ed, reset thermostat t
o
desired t
em
perature.
(5)
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 and 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
.
(6)
With a six time flash patt
ern, the heat
er will continue t
o operat
e as normal. This flash patt
ern means, ho
w
ev
er
, that
flame sense is lo
w and that flame f
ailure or im
pr
oper operation can occur at an
y time.
22
