Toshiba MMY-MAP0804FT7(Z), Руководство по обслуживанию, Страница: 208 / 333

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Ye
s
Ye
s
Ye
s
Ye
s
No
No
No stagnation
No
Error
No
No leakage or clogging No clogging No clogging
Stagnation No error
Clogging Clogging
Clogging
[H07]
Chec
k code
Cause
Chec
k code name
Oil le
v
el do
wn detection
protection
1.
V
alv
es of balance pipes closed.
(On all outdoor
units in a line) 2.
Mis
wir
ing or misinstallation of
TK1 to
TK5 sensors
3.
TK1 to
TK5 sensor error
4.
Gas leak or oil leak in a line
5.
Refr
iger
ant stagnation of compressor case
6.
SV3A, 3B
, 3C
, 3D
, 3E, 3F v
alv
e error
7.
Clogging of oil retur
n circuit from oil separ
ator
8.
Clogging of oil-equation circuit system
Are balance
pipe v
alv
es of all outdoor
units in same line fully
opened?
Are TK1, TK2,
TK3, TK4
and TK5
sensors
of
the error-detected unit correctly
connected? Are all the sensors
proper
ly connected?
Are
char
acter
istics of
TK1 to
TK5 of error-detected unit
nor
mal?
Chec
k refr
iger
ant
stagnation in
compressor
.
(*1) Chec
k leakage of
v
alv
es (SV3A, SV3C) and
clogging (SV3B
, SV3E,
SV3F).
(*2) Chec
k
clogging of oil retur
n
circuit from oil
separ
ator
. (Capillar
y
tube
, str
ainer)
Chec
k clogging of
SV3D v
alv
e
.
Chec
k clogging
of solenoid v
alv
es (SV3A,
SV3C) of all outdoor units
in the same line
. (*3)
Are all oil le
v
els
correct?
Open balance pipe v
alv
es
fully
, reset po
w
er supply
,
and star
t oper
ation.
Sensor error
→
Replace
Specify gas leak position and repair it. (Recharging, refill oil) Replace f
aulty par
t.
Replace f
aulty par
t.
Replace f
aulty par
t.
Replace f
aulty par
t.
Chec
k gas leak of all outdoor
units in the same line and chec
k soak
ed oil in them.
Correct refr
iger
ant stagnation
in compressor
, reset po
w
er
supply
, and star
t the oper
ation.
Clear cause of stagnation.
Chec
k clogging of oil
equalization circuit.
(*4)
Chec
k oil le
vel judgment of each unit.
The chec
k result is indicated on the 7-
segment displa
y b
y setting
[SW01/02/03] to [1/16/1].
Correct mis
wir
ing and misinstallation.
TK1:
CN531, b
lac
k
TK2:
CN532, g
reen
TK3:
CN533, pink
TK4:
CN534, y
ello
w
TK5:
CN535, red
Indoor/outdoor PMV error (Cause of refr
iger
ant stagnation),
discharge chec
k v
alv
e error
, etc.
(Ref
erence)
When refr
iger
ant stagnates in compressor shell, the oil le
v
el shor
tage ma
y be
Leakage or clogging
*See "Outdoor unit temper
ature sensor
char
acter
istics" on "8-
9
. Sensor Char
acter
istics".
In some cases
, it ma
y be difficult to chec
k the leakage of clogging in the f
ollo
wing condition of refr
iger
ant
stagnation in lo
w ambient temper
ature condition.
In this case
, tak
e a longer oper
ating time pr
ior to chec
k.
(Cr
iter
ion:
Discharge temper
ature of
TD1,
TD2 and
TD3 are 60˚C or higher)
(*1) Chec
king leakage and clogging on solenoid v
alv
es
a) Leakage chec
k f
or SV3A v
alv
e (F
or m
ultiple outdoor unit system)
•T
ur
n off the po
w
er supply
, tak
e off connector of SV3A v
alv
e
, and then star
t a test oper
ation after
po
w
er-ON.
• Chec
k the temper
ature change at secondar
y side of SV3A v
alv
e dur
ing oper
ation .
((1) in the figure
.)
→
If temper
ature is r
aised, leakage occurs in the SV3A v
alv
e
. Replace SV3A v
alv
e
.
b) Leakage chec
k f
or SV3C v
alv
e
• T
ur
n off the po
w
er supply
, tak
e off connector of SV3C v
alv
e
, and then star
t a test oper
ation after
po
w
er-ON.
• After oper
ation f
or se
ver
al min
utes
, chec
k temper
ature at secondar
y side of SV3C v
alv
e
. ((2) in the
figure
.)
→
If temper
ature is high (equiv
alent to discharge temper
ature
TD), leakage occurs in the SV3C v
alv
e
.
Replace SV3C v
alv
e
.
(Ev
en if leakage does not occur in the SV3C v
alv
e
, temper
ature of SV3C v
alv
e at secondar
y side
r
ises dur
ing oper
ation.
But the temper
ature is lo
w
er than
TD when there is no leakage
.)
c) Leakage chec
k f
or SV3F v
alv
e (F
or m
ultiple outdoor unit system)
•
T
ur
n off the po
w
er supply
, tak
e off connector of SV3F v
alv
e
, and then star
t a test oper
ation after
po
w
er-ON.
• Chec
k the temper
ature change at secondar
y side of SV3F v
alv
e dur
ing oper
ation .
((3) in the figure
.)
• If temper
ature is r
aised, leakage occurs in the SV3A v
alv
e
. Replace SV3A v
alv
e
.
→
If temper
ature is r
aised, leakage occurs in the SV3A v
alv
e
. Replace SV3A v
alv
e
.
d) Clogging chec
k f
or SV3B v
alv
e (F
or m
ultiple outdoor unit system)
• While outdoor unit is oper
ated, set up SW01/02/03 = [2] [1] [3] (7-segment displa
y [Hr] [...
...
...]), and
push SW04 f
or 2 seconds or more
.
• Set up SW02 = [10], and tur
n on SV3A, SV3B
, SV3C v
alv
es
. (7-segment displa
y [Hr] [...
3 -])
•
While outdoor units are oper
ating, chec
k temper
ature change at secondar
y side of SV3B v
alv
e
. ((4) in
the figure
.)
• If temper
ature does not r
ise (equiv
alent to suction temper
ature), it is a clogging of SV3B v
alv
e
.
→
Replace SV3B v
alv
e
.
e) Clogging f
or SV3E v
alv
e
Reset the po
w
er supply
.
↓
Using "V
alv
e f
orced open/close function" of the outdoor unit, chec
k ON/OFF oper
ation (Sound, coil
surf
ace temp up) of SV3E v
alv
e is perf
or
med.
↓
Star
t test oper
ation in COOL or HEA
T mode
.
↓
After oper
ation f
or se
v
er
al min
utes
, chec
k the pipe temper
ature at the secondar
y side of SV3E v
alv
e
whether temper
ature changes or not.
If it is equiv
alent to outside temper
ature
, clogging of SV3E is
considered.
((5) in the figure
.)
(Ref
erence)
If SV3E v
alv
e is clogged, temper
ature does not change at all sensors (TK1,
TK2,
TK3,
TK4 and
TK5).
f) Clogging chec
k f
or SV3F v
alv
e
• While outdoor unit is oper
ated, set up SW01/02/03 = [2] [1] [3] (7-segment displa
y [Hr] [...
...
...]), and
push SW04 f
or 2 seconds or more
.
• Set up SW02 = [8], and tur
n on SV3C
, SV3E, SV3F v
alv
es
. (7-segment displa
y [Hr] [...
3 C])
•
While outdoor units are oper
ating, chec
k temper
ature change at secondar
y side of SV3F v
alv
e
. ((3) in
the figure
.)
• If temper
ature does not r
ise (equiv
alent to suction temper
ature), it is a clogging of SV3F v
alv
e
.
Replace SV3F v
alv
e
.
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