Samsung AM080FXWANR, Service Manual

Page: 246 / 295

P ipin g Di ag r a m
Sa m s u n g El ec troni c s 2 4 5
Electronic Expansion Valve(EEV) Control
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Purpose
G e n e r a l c ontro l: M a int a in th e a m o u nt o f r ef ri ge r a nt f l o w in g into th e in d oor u nits a t th e a ppropri a t e l e v e l .
I n ac ti v e in d oor u nit c ontro l: P r e v e nt ins uff i c i e nt r ef ri ge r a nt due to r ef ri ge r a nt st ag n a tin g in th e pipin g c onn ec t ed to in ac -
ti v e in d oor u nits .
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Concept
G e n e r a l c ontro l: Contro l is p e r f or m ed w ith th e s u p e rh ea t deg r ee in c oo l in g m o de. I n h ea tin g m o de , c ontro l is p e r f or m ed
w ith th e s ubc oo l in g deg r ee.
I n ac ti v e in d oor u nit c ontro l: T h e ga s pip e is k e pt op e n s l i g ht ly in h ea tin g m o de to pr e v e nt r ef ri ge r a nt f ro m st ag n a tin g in
th e pipin g.
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Control specifications in detail
∙ Con d ition ( s ) r e q u ir ed to u s e m o de s
- G e n e r a l c ontro l : T h e r m os on in d oor u nits a r e on
- I n ac ti v e in d oor u nit EE V c ontro l: ( Co m p O FF ) or ( Co m p O N a n d I n d oor u nit T h e r m o - O FF )
∙ Op e r a tion sp ec i f i ca tions
- G e n e r a l c ontro l: Contro l is p e r f or m ed w ith th e s u p e rh ea t deg r ee a t th e e x it o f in d oor h ea t e x c h a n ge s in c oo l in g m o de.
I n h ea tin g m o de , c ontro l is p e r f or m ed w ith th e s ubc oo l in g deg r ee.
- I n ac ti v e in d oor u nit EE V c ontro l: Contro l is p e r f or m ed a s sho w n in th e f o ll o w in g t ab l e.
O u t d oor u nit op e r a tion COM P O N COM P O FF
I n d oor u nit op e r a tion Coo l in g H ea tin g
COM P stops
- 3 m in
COM P stops
3 - 5 m in
COM P stops
5 m in e l a ps e s
( A u to ) c oo l in g /
D e h u m i d i f i ca tion /
Fa n
T h e r m o On Coo l in g EE V c ontro l 0 0 3 5
T h e r m o O ff 0 N ot e 1* 0 0 3 5
( A u to ) h ea tin g
Op e r a tion On H ea tin g EE V c ontro l 3 5 3 5 3 5
Op e r a tion O ff 0 N ot e 1* 3 5 3 5 3 5
* N ot e 1 : Contro l o f in ac ti v e h ea tin g u nits (l o w e r nois e / ge n e r a l)
O u t d oor u nit f or f irst priorit y
o u t d oor u nit
CAM E DM hi g h - h ead E DM ge n e r a l
0
ఁ
or l o w e r 8 0 1 30 200
A b o v e 0
ఁ͑
8 0 1 20 18 0
Cooling
Con de ns ed l i q u i d
G a s
H ot ga s
Con de ns ed l i q u i d
Heating
7-3 Functions ( c ont . )
7-3-2-6 Indoor unit control ( c ont . )
7-3-2 Control ( c ont . )