7
7
.
.
C
C
H
H
E
E
C
C
K
K
I
I
N
N
G
G
C
C
O
O
M
M
P
P
O
O
N
N
E
E
N
N
T
T
S
S
33
Cooling mode
Test system
pressure.Does the low
pressure normal at
service part ?
The pressure on the
high side.
The pressure on the
low side.
Recharge refrigerant
after air purging with
the vacuum
pump.Does the low
pressure nomal over
again?
Air remaining at the
refrigerant system.
yes
The system wants
refrigerant.The service
people must be ration
refrigerant
(about 100g/
per)in the cooling
mode fixed
frequency
.Is the low
pressure rise ?
NO
Recharge refrigerant .
yes
The refrigerant system
blocked.Please check
the Capillary Tube( or
electronic expansion
valve)Is it blocked?
Unsolder the capillary tube
ASS'Y(or electronic expansion
valve).The capillary tube1 is blown
by N
2
.
Check check valve and 4-
way valve.
If the pressure is
close to static
pressure?
NO
NO
4-way valve collude or
compressor exhaust very
ebb.
yes
NO
yes
Heating mode
Test system
pressure.Does the
high pressure normal
at service part ?
The pressure on the
high side.
The pressure on the
low side.
Recharge refrigerant
after air purging with
the vacuum
pump.Does the high
pressure normal over
again?
Air remaining at the
refrigerant system.
yes
The system wants
refrigerant.The service
people must be ration
refrigerant
(about 100g/
per)in cooling mode fixed
frequency state
.Is the
high pressure rise in
heating mode?
NO
Recharge refrigerant
yes
If the pressure is close
to static pressure?
4-way valve collude or
compressor exhaust every
ebb.
yes
Check heat exchanger and
4-way valve.
NO
The capillary tube
blocked.Unsolder the
capillary tube ASS'Y.The
capillary tube1 and capillary
tube2 is blown by N
2
.
NO
Remove the back
panel."see"the
capillary tube1 and
capillary tube2.Is it
defrosting?
yes
NO
Summary of Contents for AS-09UR4SVNVG1 (UP1)
Page 1: ...AS 09UR4SVNVG1 UP1 AS 12UR4SVNVG1 UP1...
Page 8: ...3 3 I IN NS ST TA AL LL LA AT TI IO ON N 7 5 Outdoor unit feet distance...
Page 9: ...4 4 E EL LE EC CT TR RI IC CA AL L D DA AT TA A 7 4 1 Electrical wiring diagrams 4 1 1 INDOOR...
Page 10: ...4 4 E EL LE EC CT TR RI IC CA AL L D DA AT TA A 8 4 1 2 OUTDOOR...
