Samsung AM072FXVAFH series, Service Manual

Page: 169 / 293

Trou b l e shootin g
S a msun g El e c troni c s 4-7 3
S -n e t m ea sur ed v a lu e a n d M a ni f ol d
G a u g e v a lu e a r e th e s a m e ?
Ar e th e in d oor unit a n d out d oor
unit EEV norm a lly op e r a tin g ?
Ar e th e r e a ny b lo c k a g e insi de th e
pip e ? ( f ilt e r e t c .)
Ch e c k th e r e f ri g e r a nt a mount
Tri a l Op e r a tion
Op e n th e s e rvi c e v a lv e
R e pl a c e hi g h pr e ssur e s e nsor
Ch e c k th e r e l e v a nt EEV
Pip e insp e c tion
Y e s
Y e s
Y e s
No
Ar e a ll s e rvi c e v a lv e s op e n?
Conn e c t S -n e t a n d M a ni f ol d G a u g e .
( e ss e nti a l r e quir e m e nt)
No
No
1. How to c h e c k
غ
AM038/048/055KXWD
✳✳
C omp. Down due to high pressure protection control
(cont.)
Out d oor unit d ispl a y
In d oorunit d ispl a y × (Op
e r a tion)
◑
(Tim e r)
◑
(F a n)
◑
(Filt e r) × (D e f rost)
Ju d g m e nt M e tho d ∙ V a lu e o f th e hi g h pr e ssur e s e nsor is de t e c t ed a t 41k g / c m² or mor e
C a us e o f pro b l e m
< C ooling Operation>
∙ Out d oor unit f a n motor pro b l e m ( c onstr a in ed , de f e c tiv e )
∙ Motor d riv e r de f e c tiv e or wir e short c ir c uit
∙ Cont a min a t ed out d oor h ea t e x c h a n g e r
∙ S e rvi c e v a lv e lo c k ed / Ex c e ssiv e r e f ri g e r a nt
<Heating Operation>
∙ Out d oor unit f a n motor pro b l e m ( c onstr a in ed , de f e c tiv e )
∙ F a n motor c a p a c itor de f e c tiv e or wir e short c ir c uit
∙ S e rvi c e v a lv e lo c k ed / Ex c e ssiv e r e f ri g e r a nt