46
13 - TROUBLE SHOOTING
Is co
rrect ha
rne
s
s co
nne
cted
to
re
tu
rn sensor (2 Bro
wn
Wire
s)?
NO
YE
S
_ _ _ _
_
Blocking Error E 4 0
Return Temp
Disconn
ect ha
rne
s
s from
Return
Water S
e
nsor.
Measure re
sistance using
digital ohm met
e
r.
Is
re
sistance be
twee
n 950 to
33
,0
00 oh
ms?
Is
Hea
t Exch
ange
r Pump
orie
nted prop
erly?
(Pum
p Arro
w po
inting do
wn?
)
YE
S
NO
YE
S
NO
Correct wiring
Ins
ta
ll He
at
Exch
anger Pump
in
prope
r o
rie
nta
tion
Replace Control
Module
Replace Return
Water
Se
nsor
M
easure incoming
p
ower with
volt meter.
Is terminal 120
VAC (L) approximately
120
VAC?
Is
120 VAC (N)
approxim
ately 0 VAC?
NO
YE
S
_ P _ _ _
Blocking Error E 4 4
Phase error
Replace Control
Module
Correct field
wir
ing
Summary of Contents for OLSSC-075
Page 45: ...45 13 TROUBLE SHOOTING...
Page 52: ...52 14 WIRING DIAGRAM 14 1 Connection Diagram...
Page 53: ...53 14 WIRING DIAGRAM 14 2 Schematic Diagram of Ladder Form...
Page 70: ...70 NOTES...
Page 71: ...71 Date Service Performed Company Name Tech Initials Company Address Phone...
Page 72: ...ECR International Inc 2201 Dwyer Avenue Utica NY 13504 4729 web site www ecrinternational com...