– 220 –
Ye
s
Ye
s
No
No
No
No
Ye
s
No
Ye
s
Ye
s
No
Ye
s
Ye
s
Ye
s
No
No
Ye
s
No
(C)
Ye
s
No
Heating operation
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
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
High-pressure protective
operation
1. Pd
sensor
error
2. Service
valve
closed.
3.
Indoor/outdoor fan error
4. Indoor/outdoor
PMV
clogging
5.
Indoor/outdoor heat exchanger clogging
6.
SV2 circuit error
7.
SV4 circuit error
8.
SV5 circuit error
9.
Outdoor I/F P
.C. board error
10.
Operation error of check valve of main discharge
pipe
1
1. Refrigerant
overcharge
Are service valves fully
opened?
Does heating
indoor fan normally
operate?
Is indoor PMV
normal?
Is check valve
of main
discharge pipe
normal?
Is there
clogging in any
valves?
Is SV5 circuit normal?
Are any indoor
units in dif
ferent
refrigerant circuit
connected?
Are
characteristics of
sensor TC2
and TCJ
resistance normal?
Is connector
connection and coil
normal?
Is connector
connection, condenser
or fan motor normal?
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 faulty parts.
Repair faulty parts.
Repair check valve.
Replace
Eliminate the
interference.
Replace PMV body
.
Repair SV5 circuit.
Check and correct
wiring.
Replace TC2
or TCJ
sensor
.
Refrigerant overcharge,
clogging, pipe breakage,
abnormal overload
Check indoor P
.C. board.
Faulty
Replace
(Coil error
, choke,
disconnection of cables, etc.)
(Check it using the
miswiring check function
of the outdoor unit.)
Repair faulty parts.
Repair faulty 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 error
, clogging, disconnection
of wire, etc.)
(Coil error
, 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 dif
ferent, an error of pressure sensor
is considered.
If 2 and 3 are dif
ferent, 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,
PMV2: CN301, 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
Is there any interference
of heat-exchanging of
indoor unit?
1. Filter clogging
2. Heat exchanger
clogging
3.
Air short circuit
Summary of Contents for MMY-MAP0804HT7JP
Page 23: ... 22 1 Wiring Diagrams 1 1 Outdoor Unit Models MMY MAP0804 MAP1004 and MAP1204 ...
Page 24: ... 23 Models MMY MAP1404 and MAP1604 ...
Page 35: ... 34 1 2 10 Slim Duct Type AP024 AP027 Models MMD AP0244SPH MMD AP0274SPH ...
Page 38: ... 37 1 2 13 High Wall Type 3 series Models MMK AP0073H AP0093H AP0123H AP0153H AP0183H AP0243H ...
Page 52: ... 51 2 5 Parts Layout in Outdoor Unit 8 10 12HP Model MMY MAP0804 MAP1004 MAP1204 ...
Page 53: ... 52 14 16HP Model MMY MAP1404 MAP1604 ...
Page 57: ... 56 2 7 2 Inverter P C board for compressor MCC 1596 A3 IPDU ...
Page 323: ......