Ye
s
Ye
s
No
No
Ye
s
Ye
s
No
Ye
s
No
[P15]
Cause
Check code
Check code name
Gas leak detection
TS condition (Sub-code: 01)
1.
Outdoor unit service valve closed
2.
Outdoor PMV
trouble
3.
TS1
sensor
trouble
4.
Refrigerant shortage, clogging refrigerant circuit
5.
4-way valve
trouble
6.
SV4 circuit
trouble
Are service valves
at gas and liquid
side fully opened?
Open service valves fully
.
Repair outdoor PMV
.
Replace TS1
sensor
.
Check and replace 4-way
valve and coil.
Repair
SV41/SV42 valve
circuits.
Refrigerant shortage,
clogging, pipe breakage.
(Check there is no clogging and pipe
breakage, and then recharge refrigerant.)
(Coil, valve body
, disconnection
of wire, etc.)
Are
characteristics
of TS1
sensor
resistance
normal?
Does discharge
refrigerant gas bypass
to suction side through
4-way valve?
Is there any
leakage on SV41
and
SV
4
2
valve
circuits?
No
Connectors: PMV1: CN300,
PMV4: CN303
Is outdoor PMV normal?
1. Connector connection
Wiring
2.
Coil
3.
4. V
alve body
5. Outdoor I/F P
.C. board
Ye
s
Ye
s
No
No
No
Ye
s
No
Ye
s
Ye
s
Ye
s
[P13]
Check code
Check code name
Outdoor liquid back detection
trouble
Cause
1.
PMV1/PMV4
trouble
2.
P
D
sensor, P
S
sensor
trouble
3.
Clogging of SV2 circuit
4.
Leakage at a check valve on a main discharge pipe
5.
Outdoor I/F P
.C. board
trouble
Are
connections of outdoor
PMV1/PMV4
connectors correct?
Are
operations of outdoor
PMV1/PMV4
normal?
Are
characteristics of
P
D
sensor/P
S
sensor
output voltage
normal?
Is SV2 valve coil
correctly connected?
Correct connector connection.
(PMV1: CN300,
PMV4: CN303)
PMV
trouble
P
D
sensor/P
S
sensor
trouble
Correct connector connection.
(
S
V2: CN3
11
)
Replace check valve of main
discharge pipe.
Check I/F P
.C. board.
Is there no leakage of
check valve of main
discharge pipe in follower
units in which compressors
are driven in cooling
operation?
* Se
e “Ou
tdo
or
un
it
te
mp
erat
ur
e s
enso
r
characteristics” on
“8-
10
.
Sensor Charac
teristics”.
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