ECR International Olsen OLSSC-050, Installation, Operation & Maintenance Manual, Page: 59 / 84

59
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
o
w
e
r
s
u
p
p
ly
c
ir
cu
it
b
re
a
k
e
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