AFS120FX
3 – 2
1. Fail to start, Fail to start motor
2. Abnormal noise
When tur ni ng the po wer on .
Is th er e a be ep sou nd fro m
th e u ni t?
Ch eck ci rcu it b re ake r
a nd fuse .
No
Ch eck th e p owe r co rd .
Ch eck th e tr an sfor m er.
Re pl ace the fuse on mai n P CB.
Yes
P re ss the PO WER b utto n, th en
th e fa n b utto n o n th e Co ntr ol
p an el . Do th e l amp s li gh t?
Ch eck th e fa n ca pa cito r.
Ch eck wh eth er the fan
is bl ocke d.
Ch eck wh eth er the
b lo wer is b lo cked .
Re pl ace the di spl ay boa rd .
Ch eck th e vo lta ge
b etwe en P1 , P2 , P3 on
ma in PCB an d N o n
p owe r co rd .
A ny o ne of th re e n o vo lta g e
Re pl ace the moto r.
Ch eck wi ri ng .
No
Yes
Re pl ace the mai n P CB.
Wh en op er ati ng in FA N
O NLY, is th er e sti ll same
n oi se?
Ch eck wh eth er the pi pe s ar e
vib r ati ng or comi ng in to
co nta ct with oth er pi pe s or
co mpr esso r
No
Yes
Ch eck wh eth er the ai r- ou t
fra me is vi br ati ng or the re is
so meth in g b lo c kin g swi ng .
Re pl ace the moto r.
Ch eck wh eth er the fan is
b lo cked .
Ch eck wh eth er the bl owe r
is bl ocke d.
Ch eck th e p ip e.
Ch eck wh eth er the no ise
is fro m in sid e t h e p ip e.
Ch eck th e r ub be r i sol ato r
u nd er the comp re ssor.
Re pl ace the comp re ssor.
Yes
Re cha rg e r efr i g er an t.
Re pl ace the ca p il la ry tu be .
No
