
Test system flow
Cooling mode
Test system pressure.
Is
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.
Is
the low
pressure no
r
mal
over again?
Air remain
s
at the
refrigerant system.
yes
The system
needs
refrigerant.The
service people must
add
refrigeran
t
.
Doe
s
the low pressure
rise ?
NO
Recharge
refrigerant .
yes
The refrigerant system
is
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.
Is
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.
Is
the high
pressure normal over
again?
Air remain
s
at the
refrigerant system.
yes
The system
need
s
refrigerant.
The service
people must
add
refrigerant
.
Doe
s 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
is
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
- 2
3
-
Содержание WHU09CTA21S
Страница 55: ...Cassette grille Optional parts WH AG4CT1 1 2 3 4 5 54 Parts list ...
Страница 57: ...Cassette grille Optional parts WH AG4CT2 1 2 3 4 5 6 7 8 9 56 ...
Страница 59: ...Indoor unit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 WHU09CTA21S 58 ...
Страница 61: ... 60 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Indoor unit WHU12CTA21S ...
Страница 63: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 62 Indoor unit WHU18CTA21S ...
Страница 65: ... 64 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 Indoor unit WHU24CTA21S ...
Страница 67: ...2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 66 Indoor unit WHU36CTA21S ...
Страница 69: ...Outdoor unit WHU09SZA21S 68 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 ...
Страница 70: ... Refrigerant cycle 69 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ...
Страница 71: ... Electrical parts 70 32 33 34 35 36 37 38 39 40 31 41 ...
Страница 73: ...Outdoor unit WHU12SZA21S 72 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 ...
Страница 74: ... Refrigerant cycle 73 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ...
Страница 75: ... Electrical parts 74 32 33 34 35 36 37 38 39 40 31 41 ...
Страница 77: ...Outdoor unit WHU18SZA21S 76 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 ...
Страница 78: ... Refrigerant cycle 77 17 18 19 20 21 22 23 24 25 26 27 28 29 30 35 31 34 48 32 33 ...
Страница 79: ... Electrical parts 78 36 37 38 39 40 41 42 43 45 46 47 44 ...
Страница 81: ...Outdoor unit WHU24SZA21S 80 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 ...
Страница 82: ... Refrigerant cycle 22 23 24 25 26 27 28 29 30 32 33 34 35 36 31 81 37 ...
Страница 83: ... Electrical parts 82 38 39 40 42 43 44 45 46 47 48 49 41 ...
Страница 85: ...Outdoor unit WHU36SZA21S 84 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 ...
Страница 86: ... Refrigerant cycle 85 17 18 19 20 21 22 23 24 25 26 27 28 29 30 32 33 31 ...
Страница 87: ... Electrical parts 86 34 35 36 37 38 39 40 42 43 44 45 46 47 48 49 41 ...
Страница 90: ......