L.B. White HW120 Plus Therma Grow - Manual (Page 25)

25
Problem M
o
to
r
D
o
e
s
N
o
t
R
u
n
Is heat
er
connect
ed t
o
electrical supply?
Is
select
or
switch set t
o
VENT?
Connect heat
er t
o
electrical supply
.
Mo
v
e
the
select
or switch
to
the VENT position.
Ye
s
No
Ye
s
Ye
s
Is
pr
oper v
o
ltage
supplied fr
om
select
or switch
to
mo
to
r?
R
eplace
select
or switch
R
eplace mo
to
r
Check all electrical connections.
V
erify pr
oper v
o
ltage.. Contact an
electrician if pr
oper v
oltage is no
t
present.
No
No
Ye
s
Is
pr
oper
v
o
ltage supplied t
o
select
or switch ?
No
VENTILA
TION MODE
M
o
to
r
“H
u
m
s
”.
D
o
e
s
N
o
t
R
u
n
.
Is
fa
n binding
on housing?
Check f
or damage t
o
mo
tor and f
an assembly
and housing. R
epair or replace as necessar
y.
Ye
s
R
econnect wires t
o
capacit
or
.
Def
ectiv
e capacit
or
.
R
eplace the mo
to
r.
No
Ye
s
Are wires
disconnect
ed
fr
om capacit
or?
No
F
iv
e
T
im
e
s
Rapid On/Of
f
cy
cling of the
burner
.
See flame sensor relat
ed pr
oblems in
three time flash patt
ern.
S
ix
T
im
e
s
Lo
w micr
oam
p
output fr
om flame sensor
. The heat
er will
continue t
o
operat
e as normal. Flame sense is lo
w and that
flame f
ailure or im
pr
oper operation can occur at an
y time. See
flame sensor relat
ed pr
oblems in three time flash patt
ern.
F
o
u
r
T
im
e
s
If HSI boar
d does no
t reset, then replace the boar
d. (Int
ernal boar
d f
ault.)
If HSI 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,
to
o small wire gauge.)