Mitsubishi Electric MXZ-2C20NA4 Installation Manual page 8

4 - 4 . T E S T R U N
• Test runs of the indoor units should be performed individually. See the installation manual coming with the indoor unit, and make sure all the units operate properly.
• If t h e t e s t r u n w i t h a l l t h e u n i t s i s p e r f o r m e d a t o n c e
d e t e c t e d . T h u s , b e s u r e t o p e r f o r m
A b o u t t h e r es t a r t p r o t ec t i v e m ec h a ni s m
Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner.
W i r i ng / p i p i ng c o r r ec t i o n f u nc t i o n
T h i s u n i t h a s a w i r i n g / p i p i n g c o
and confirming the combination is difficult, use this function to detect and correct the combination by following the procedures below.
M a k e s u r e t h a t t h e f o l l o w i n g i s d o n e .
• P o w e r i s s u p p l i e d t o t h e u n i t .
• Stop valves are open.
N o t e:
Du r i n g d e t e c t i o n , t h e o p e r a t i o n o f t h e i n d o o r u n i t i s c o
f u n c t i o n .
P r o c e d u r e
P r e s s t h e p i p i n g / w i r i n g c o
s u p p l y .
• Co r r e c t i o n c o m p l e t e s i n 1 0 t o 1 5 m i n u t e s . W h e n t h e c o
b y L ED i n d i c a t i o n . De t a i l s a r e d e s c r
• T o c a n c e l t h i s f u n c t i o n d u r i n g i t s o p e r a t i o n , p r e s s
a g a i n .
• W h e n t h e c o r r e c t i o n c o
en
(S W 8 7 1 ) a g a i n .
W h e n t h e r e s u l t i s " N o t c o
cancel this function. Then, confirm the wiring and piping combination in a conventional manner by
o p e r a t i n g t h e i n d o o r u n i t s o n e b y o n e .
• T h e o p e r a t i o n i s d o n e w h i l e t h e p o w e r i s s u
t h e s w i t c h , i n c l u d i n g t h e P . C. b o a r d . T h i s m a y c a
live parts around the switch. Contacting the live parts may cause P.C. board damage.
• To prevent electronic control P.C. board damage, make sure to perform static elimination before
o p e r a t i n g t h i s f u n c t i o n .
• T h i s f u n c t i o n d o e s n o t o p e r a t e w h e n t h e o u t s i d e t e m p e r a t u r e i s 3 2 ° F ( 0 ° C) o r b e l o w .
4 - 5 . E X P L A N A T I O N T O
• Using the OPERATING INSTRUCTIONS, explain to the user how to use the air conditioner (how to use the remote controller, how to remove the air filters, how to
remove or put the remote controller in the remote controller holder, how to clean, precautions for operation, etc.).
• R e c o m m e n d t h e u s e r t o r e a d t h e O P ER A T IN G IN S T R U CT IO N S c a
5 . P U M P I N G
W h e n r e l o c a t i n g o r d i s p o s i n g o f t h e a i r c o
1 ) T u r n o f f t h e b r e a k e r .
2) Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit.
3) Fully close the stop valve on the liquid pipe side of the outdoor unit.
4 ) T u r n o n t h e b r e a k e r .
5 ) S t a r t t h e e m e r g e n c y CO O L o p e r a t i o n o n a l l t h e i n d o o r u n i t s .
6 ) W h e n t h e p r e s s u r e g a u g e s h
t o t h e i n d o o r u n i t i n s t a l l a t i o n m a n u a l a b o u t t h e m e t h o d f o r s t o p p i n g t h e o p e r a t i o n . )
* If t o o m u c h r e f r i g e r a n t h a s b e e n a d d e d t o t h e a i r c o
may operate due to the pressure increase in the high-pressure refrigerant circuit. If this occurs, use a refrigerant collecting device to collect all of the refrigerant in
the system, and then recharge the system with the correct amount of refrigerant after the indoor and outdoor units have been relocated.
7) Turn off the breaker. Remove the pressure gauge and the refrigerant piping.
W h en t h e r ef r i g er a t i o n c i r c u i t h a s a l ea k , d o no t ex ec u t e p u m p d o w n w i t h t h e c o m p r es s o r .
W h en p u m p i ng d o w n t h e r ef r i g er a nt , s t o p t h e c o m p r es s o r b ef o r e d i s c o nnec t i ng t h e r ef r i g er a nt p i p es .
T h e c o m p r es s o r m a y b u r s t a nd c a u s e i nj u r y i f a ny f o r ei g n s u b s t a nc e, s u c h a s a i r , ent er s t h e p i p es .
7
, p o s s i b l e e r r o n e o u s c o
t h e t e s t r u n o n e b y o n e .
r r e c t i o n f u n c t i o n w h i c h c o r r e c t s w i r i n g a n d p i p i n g c o
n t r o l l e d b y t h e o u t d o o r u n i t . Du r i n g d e t e c t i o n , t h e i n d o o r u n i t a u t o m a t i c a
r r e c t i o n s w i t c h (S W 8 7 1 ) 1 m i n u t e o r m o r e a f t e r t u r n i n g o n t h e p o w e r
r r e c t i o n i s c o
i b e d i n t h e f o l l o w i n g t a b l e .
t h e p i p i n g / w i r i n g c o
m p l e t e d w i t h o u t e r r o r , d o n o t p r e s s t h e p i p i n g / w i r i n g c o
m p l e t e d " , p r e s s t h e p i p i n g / w i r i n g c o
p p l i e d . M a k e s u
u s e e l e c t r i c s h
T H E U S E R
D O W N
n d i t i o n e r , p u m p d o w n t h e s y s t
o w s 0.1 to 0 psi [Gauge] (0.05 to 0 MPa), fully close the stop valve on the gas pipe side of the outdoor unit and stop the operation. (Refer
n d i t i o n e r s y s t
WARNING
n n e c t i o n s o f t h e r e f r i g e r a n t p i p e s a n d t h e i n d o o r / o u t d o o r u n i t c o
m b i n a t i o n . W h e n t h e r e i s p o s s i
m p l e t e d , i t s r e s u l t i s s h o w n
r r e c t i o n s w i t c h (S W 8 7 1 )
r r e c t i o n s w i t c h
r r e c t i o n s w i t c h (S W 8 7 1 ) a g a i n t o
r e n o t t o c o n t a c t p a r t s o t h e r t h a n
o c k o r b u r n b y h o t p a r t s a n d
r e f u l l y .
e m f o l l o w i n g t h e p r o c e d u r e b e l o w s o
e m , t h e p r e s s u r e m a y n o t d r o p t o 0 . 1 t o 0 p s i [ Ga u g e ] (0 . 0 5 t o 0 M P a ), o r t h e p r o t e c t i o n f u n c t i o n
b i l i t y o f i n c o r r e c t w i r i n g a n d p i p i n g c o
l l y s t o p s o p e r a t i o n . T h i s i s n o t a m a l -
L E D i nd i c a t i o n d u r i ng d et ec t i o n:
L ED1 L ED2 L ED3
(R e d ) (Y e l l o w ) (Gr e e n )
L i t L i t O n c e
R es u l t o f p i p i ng / w i r i ng c o r r ec t i o n f u nc t i o n
L ED1 L ED2 L ED3
(R e d ) (Y e l l o w ) (Gr e e n )
Co m p l e t e d
L i t N o t l i t L i t (P r o b l e m
n o r m a l )
N o t c o
O n c e O n c e O n c e
(De t e c t i o n f a i l e d )
R e f e r t o " S A FET Y P R E-
CA U T IO N S W HEN L ED
O t h e r i n d i c a t i o n s
B L IN K S " l o c a
t h e t o p p a n e l .
t h a t n o r e f r i g e r a n t i s r e l e a s e d i n t o t h e a t m o s p
n n e c t i n g w i r e s c a n n o t b e
m b i n a t i o n ,
R e s u l t
c o r r e c t e d o r
m p l e t e d
t e d b e h i n d
h e r e .