Bradford White U2TW75T*RN, Руководство по обслуживанию

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U TTW S ERV I CE PROCEDURE X I
11 5 VAC Trace
W AR N I N G
11 5 volt potential e x posure. Use caution
m akin g volta g e checks to avoi d personal injur y .
D i sc onne c t c ord s et a s
s hown in photo 2 7.
L E D s tatu s
N one , C ontrol L E D not
on or fla s hin g .
S t e p 1. V e r ify 115VAC a nd p r op e r pol a r i t y a t w a ll ou t l e t .
S t e p 2 . With unit plugged in and control power switch in the “ON” position verify LED status .
L E D s tatu s
Short fla s h , on c e e v er y
four s e c ond s.
L E D s tatu s
“H eartbeat ”, alternate s
bri g ht / dim .
L E D s tatu s
V ariou s fla s hin g error
c ode s.
Waitin g for
c all for heat .
Thermo s tat c allin g
for heat
V erif y error c ode a s
li s ted on pa g e 1 2
Us in g a v olt meter s et to
v olt s AC, i s there 11 5 VAC
a c ro ss terminal s s hown
in photo 2 8 ?
N
Y
2 7
2 8
Re c onne c t c ord s et
s hown in photo 2 7.
Repair dama g e
C he ck for dama g e to AC
s uppl y power c ord .
Y
N
Repla c e B lower
3 1
C he ck for 11 5 VAC between bla ck & white wire s.
-NO TE -
Ele c troni c meter probe s re q uired . Us e c are not to
dama g e c onne c tor durin g thi s c he ck.
Wire s heath pulled ba ck to
identif y wire c olor s
3 0
Wire harne ss
D i sc onne c t wire harne ss
from g a s c ontrol
(s ee photo 3 0).
L o c ate bla ck & white wire s at c onne c tor , It
ma y be ne c e ss ar y to pull ba ck wire s heath
to identif y wire c olor s
(s ee photo 3 1).
Y
N
Repla c e g a s
c ontrol .
I s there 11 5 VAC a c ro ss
bla ck & white wire s a s
s hown in photo 3 1 ?
C all for te c hni c al
s upport .
I s there 11 5 VAC a c ro ss
terminal s s hown in
photo 2 9 ?
N
Y
In c orre c t s uppl y
v olta g e polarit y
2 9
P a g e 32
115 VAC C ircuit T race
R
32