Ye
s
Ye
s
Ye
s
No
No
No
[P01]
* For the models equipped with
AC fan motor only
Cause
Check code
Is the connector
connected correctly?
Does trouble
occur after removing
foreign objects?
Are there
any physical factors
such as foreign objects that
hinder operation of
the fan motor?
Correct cabling circuit for
the connector connection.
Replace fan motor.
Replace indoor P.C. board
End
Check code name
Indoor fan motor trouble
1. Wiring
trouble
2.
Check fan motor
.
[P05]
Check code
Check code name
Phase trouble detected, power
failure detected, abnormal inverter
DC voltage (on compressor)
Cause
Phase trouble or power failure of the power supply to
the outdoor unit
Sub-code:
00: Power detection trouble
01: Open phase
02: Power supply miswiring
1
∗
: Compressor 1 side
2
∗
: Compressor 2 side
•
Check the phase of the power line to the outdoor unit.
•
Check trouble of outdoor I/F P
.C. board.
•
Check there are no loosened connectors, etc.
•
Check connection wiring of MG-CTT
.
•
Check operation of MG-CTT
.
Ye
s
Ye
s
Ye
s
No
Ye
s
No
No
No
No
Ye
s
No
[P03]
Cause
Check code
Check code name
Discharge temp
TD1 trouble
Are service
valve of gas and liquid
sides fully opened?
Open service valve fully
.
Ye
s
Charge refrigerant after
fixing the part of refrigerant
leakage
Replace outdoor PMV
.
Replace TD1
sensor
.
Check 4-way valve.
Correct installation of valve
coil.
Replace SV41 valve.
Correct wiring
Refrigerant shortage,
clogging, pipe breakage
1.
Service valve of outdoor unit closed
2. Outdoor
PMV
trouble
3. TD
sensor
trouble
4.
Refrigerant shortage, clogging of refrigerant piping
5.
4-way valve trouble
6. SV4
circuit
leakage,
misinstallation
Are
characteristics of
TD1 sensor resistance
normal?
Does
discharged refrigerant
gas leak to suction side
through 4-way
valve?
Are indoor units of a
dif
ferent refrigerant line
connected?
No
Connectors: PMV1: CN300, PMV2: CN301,
PMV3: CN302, PMV4: CN303
Ye
s
(Check it using the miswiring check
function of the outdoor unit.)
(Check there is no pipe breakage, and
then recharge the refrigerant.)
Is outdoor PMV normal?
Connector connection
1.
2. Wiring
.
3
li
o
C
4. V
alve body
5. Outdoor I/F P
.C. board
SV4 circuit
1.
Are
SV41 and SV42
valve coils
installed correctly?
2. Is SV41 circuit sealed
correctly (no leakage)?
* Se
e “Ou
tdo
or u
n
it t
e
mpe
ra
ture
sen
sor
characteristics” on
“8-
10
.
Sensor Characteristics”.
Is there
refrigerant leakage?
- 215 -
Содержание MMY-MUP0801HT7JP
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