Samsung AG042KSVANH, Service Manual

Page: 66 / 142

6 2
4-3-22. : COMP DOWN due to low pressure protection control
Inv e rt e r / Hy d ro c ontrol p a rt d ispl a y
Ju dg m e nt M e tho d Insp ec tion wh e n th e v a lu e o f low pr e ssur e s e nsor is 1.8k gf / c m², or l e ss f or a ir c on d itionin g a n d 0.8k gf / c m² f or h ea tin g .
C a us e o f pro b l e m
∙ R ef ri ge r a nt short age
∙ El ec troni c e xp a nsion v a lv e b lo c k ed
∙ Low pr e ssur e s e nsor defec tiv e
∙ L ea k age o f c ompr e ssor d is c h a r ge c h ec k v a lv e o f not- g o- e n d out d oor unit
∙ Error m a y be f oun d wh e n us ed in t e mp e r a tur e r a n ge outsi de th e c on d itions o f us e
(Op e r a tin g outsi de t e mp e r a tur e a t - 2 5°C or l e ss f or h ea tin g a n d op e r a tin g outsi de t e mp e r a tur e a t -15°C or l e ss f or Coolin g )
예
예
예
아니오
예
아니오
아니오
예
아니오
Is th e S -n e t
e stim a t ed v a lu e a n d th e M a ni f ol d G a u ge v a lu e
in r a n ge ?
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 age
insi de th e pip e ? ( f ilt e r e t c .)
Ch ec k th e r ef ri ge r a nt a mount
Is th e r e a ny l ea k age
in th e liqui d pip e v a lv e or th e d is c h a r ge
c h ec k v a lv e o f th e not- g o- e n d out d oor unit wh e n
only som e out d oor units
a r e op e r a tin g ?
Tri a l Op e r a tion
R e pl ace low pr e ssur e s e nsor
Ch ec k th e r e l e v a nt EEV
Ch ec k th e pipin g
R e pl ace r e l e v a nt p a rts
Conn ec t S -n e t a n d M a ni f ol d G a u ge
(Ess e nti a l r e quir e m e nt)
No
No
Y e s
Y e s
Y e s
1. Insp
ec tion M e tho d
No
No
Y e s
Y e s