Ye
s
Ye
s
Ye
s
No
Ye
s
No
No
Ye
s
No
Ye
s
No
No
Ye
s
No
[P20]
Cooling operation
(B)
No
Ye
s
No
es
ua
C
ed
oc
kc
eh
C
Check code name
High-pressure protective operation
1.
PD sensor
trouble
2.
Service valve closed.
3.
Indoor/outdoor fan
trouble
4.
Indoor/outdoor PMV clogging
5.
Indoor/outdoor heat exchanger clogging
6.
SV2 circuit
trouble
7.
SV4 circuit
trouble
8.
SV5 circuit
trouble
9.
Outdoor I/F P
.C. board
trouble
10.
Oper
trouble
Operation trouble
of check valve
of main discharge pipe
11.
Refrigerant overcharge
Are service valves fully
opened?
Does
cooling outdoor fan normally operate?
Is there
any fan crack or coming-of
f?
Is SV2 bypass circuit normal?
Is SV4 circuit normal?
Is check valve of
main discharge pipe
normal?
Are
characteristics of high-
pressure sensor
normal?
Open service valves fully
.
Repair
failure
parts.
Repair
failure
parts.
Repair outdoor PMV
.
Eliminate the interference.
Repair SV2 bypass circuit.
Repair SV4 circuit.
Repair check valve.
Replace
Refrigerant overcharge, clogging, pipe breakage, abnormal overload
(Connector connection, fan IPDU, fan motor
, cabling)
(Coil
trouble
, clogging,
disconnection of wire, etc.)
(Coil
trouble
, clogging,
disconnection of wire, etc.)
Check parts. Failure
Replace
Reset power supply
, and start a test operation
corresponded to the season.
Cooling
T
o (B)
Heating
T
o (C)
*1. Pressure by pressure gauge (Check joint)
2.
Pressure display on 7-segment display
3.
Output voltage of I/F P.C. board
If 1 and 2, 3 are different,
a failure
of pressure
sensor is considered. If 2 and 3 are different, check I/F P.C. board.
Is there any
interference of heat-
exchanging of outdoor unit? 1. Heat exchanger clogging
2.
Air short circuit
Connectors: PMV1: CN300, PMV4: CN303
Ye
s
Is outdoor PMV normal? 1. Connector connection
2. Wiring 3. Coil
4. V
alve body
5. Outdoor I/F P
.C. board
Ye
s
No
Ye
s
No
Ye
s
No
No
No
Ye
s
No
Ye
s
[P19]
Sub-code: Detected outdoor unit No.
Cause
Check code
Check code name
4-way valve reverse
trouble
1.
4-way valve
trouble
2.
TS1 sensor/TE1 sensor
trouble
3.
P
D
sensor/P
S
sensor
trouble
4.
TE sensor/TL
sensor misconnection
Is 4-way valve coil connector connected?
Are output voltage
characteristics of P
D
and
P
S
sensors normal?
Are
characteristics of
resistance value of
TS1,
TE1 and
TL1
sensors
normal?
Are
TS1,
TE1
and
TL1
sensor
connectors connected
normally?
Does
discharge refrigerant gas bypass to suction side through 4-way
valve? *1
Does 4-way valve
operate?
Correct connector connection. (4-way valve coil: CN317)
Sensor
trouble
Sensor
trouble
Correct connector connection TS1 sensor: CN505 TE1 sensor: CN520 TL1
sensor: CN523
If
no
trouble
occurs
in
the
test
operation, restart operation.
Check 4-way valve.
4-way valve
trouble
Reset the power supply and start heating test operation.
*1 Check
TS1 and
TE1 temperature of the outdoor unit which is running.
(I/F) SW01=[1], SW02=[6], SW03=[2]
TS sensor temperature
SW01=[1], SW02=[7], SW03=[2]
TE sensor temperature
<Judgment criteria> TE1 sensor: Normal if
TE1 is 30°C or less in the seasons except
summer (Outside temp 20°C or lower) TS1 sensor: Normal if
TS is 50°C or less in the seasons except
summer (Outside temp 20°C or lower)
* Se
e
“O
ut
do
or
un
it
te
mp
erat
ur
e
se
nso
r
characteristics”
on
“8-10.
Sensor
Charac
teristics”.
−
20
8
−
Summary of Contents for MMY-MAP0806FT7(J)P
Page 32: ... 31 1 2 Single port FS Unit RBM Y1123FE FE2 RBM Y1803FE FE2 ...
Page 33: ... 32 RBM Y2803FE FE2 ...
Page 302: ...MMY MAP0806FT8 J P E MAP1006FT8 J P E MMY MAP0806FT8 J P TR MAP1006FT8 J P TR 301 ...
Page 307: ... 306 MMY MAP1206FT8 J P E MAP1406FT8 J P E MMY MAP1206FT8 J P TR MAP1406FT8 J P TR ...