Lennox GWM-050IE, Installation Instructions Manual

Page: 57 / 84

57
Is
field
wiring
loose
or
fa
ulty?
Is
power
su
pply
betw
een
59
and
61
Hz?
N
O
YE
S
_ P
_ _ _
Blocking Error
E 4 5
Net frequency error
Correct
wiring
Is
p
ow
er
s
up
pl
y
ci
rcu
it
br
ea
ke
r
loose
or
fa
ulty?
Prov
ide
frequency
st
abilize
d
power
supp
ly
rated at 60 Hz
+
/-
2
%
Replace
Control
M
o
d
u
le
Y
ES
YE
S
N
O
N
O
Replace
circuit
b
re
a
k
e
r
13 - TROUBLE SHOOTING
Fix
the
connection.
These error messages are displa
yed
when the control board detects fault in
blower
motor
system.
Check
wire
connector
to
blower
.
Check
connector
J9
on
control
board.
Is
an
y
connection
loose?
YES
NO
Replace blower motor
. Does
this correct the problem?
YES
NO
Boiler
is
oper
ating
properly
Replace
Control
Module