Toshiba MMY-MAP0804HT7JP, Service Manual

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(6) (7) (2) (5) (8) (1)
(3)
(8) (4)
High-pressure sensor
(TD2)
(SV2)
(SV3D)
(TK2)
(SV3B)
(TD1)
(TK4)
SV3E) TK5)
(SV41)
(SV42)
Oil header
Distributor
(TD3)
(SV43)
(TK3)
(SV3F)
(SV3C)
SV
SV
SV
SV
SV
SV
SV
SV
SV
SV
SV
Compressor
1
(Inverter)
Compressor
2
(Inverter)
Compressor
3
(Inverter)
Oil separator
High- pressure SW
High- pressure SW
High- pressure SW
MMY
-MAP1404
∗
MMY
-MAP1604
∗
Circuit
TK1 TK2 TK3 TK4 TK5
Connector
CN531 (Black) CN532 (Green) CN533 (Pink) CN534 (Y
ellow)
CN535 (Red)
[H08]
Strainer
Capillary
TK1
No
Ye
s
Ye
s
No error
No
No error
Error Error
No
Ye
s
[H16]
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
Oil level detective temperature sensor error
TK1 to
TK5 sensor Open/Short
Oil level detection circuit error TK1 temperature detective circuit error (Sub-code: 01)
Sub-code:
01:
TK1 sensor error 02:
TK2 sensor error 03:
TK3 sensor error
04:
TK4 sensor error 05:
TK5 sensor error
The detected error is an oil level detective temperature sensor error
. Check disconnection of the wiring and resistance
value of the sensor
.
If the sensors are normal, replace the outdoor I/F P
.C. board.
1.
Coming-of
f of
TK1 sensor
, miswiring, characteristics
error of resistance value
2.
Oil-equalization circuit error (Check valve, capillary clogging, strainer clogging)
3.
Refrigerant stagnation in the compressor shell
Is not
TK1 sensor
detached?
Is there
no miswiring or
misinstallation on
TK1/TK2/TK3/TK4/TK5
sensors?
Are
characteristics of
TK1 sensor resistance
value normal?
Check the
clogging of SV3E
valve. (Note 1)
Correct installation of sensor
.
Sensor error Replace clogging part. Replace SV3E valve.
Check I/F P
.C. board
Correct miswiring/misinstallation. TK1: CN531, black TK2: CN532, green TK3: CN533, pink TK4: CN534, yellow TK5: CN535, red
Start a test operation in COOL
or HEA
T
mode.
↓
Display
TK1 sensor temperature on 7-segment display with
SW01/02/03=[1] [12] [2].
↓
Check
TK1 sensor temp approx. 10 minutes after compressor 1 has operated.
If low temperature continues (approximately outside temp) or temperature has little change, a clogging of strainer of oil-equalization circuit, clogging of capillary tube, or malfunction of check valve is considered.
Compressor
1
(Note 1) Refer to the article of the check code [H07].
*Se
e “Ou
tdo
or un
it te
mpera
ture
senso
r
cha
ra
cteristics” on
“8-9.
Se
nsor Ch
aracte
ri
st
ics”.