ā 178 ā
No
No
No
Ye s
Ye s
Ye s
Ye s
No
No
[P15]
Check code CauseCheck code name
Gas leak detection
TS condition (Sub-code: 01)
1. Outdoor unit service valve closed
2. Outdoor PMV error
3. TS1 sensor error
4. Refrigerant shortage, clogging refrigerant circuit
5. 4-way valve error
6. SV4 circuit error
Are service
valves of discharge
gas pipe, suction gas pipe
and liquid sides
fully opened?
Open service valves fully.
Repair outdoor PMV.
Replace TS1 sensor.
Check and replace 4-way
valve and coil.
Repair SV41/SV42/SV43
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,
42 and 43 valve
circuits?
Connectors: PMV1: CN300,
PMV2: CN301, PMV4: CN303
Is outdoor PMV normal?
1. Connector connection
2. Wiring
3. Coil
4. Valve body
5. Outdoor I/F P.C. board
* See "Outdoor unit temperature sensor
characteristics" on "9-9. Sensor Characteristics".
NORMAL
NORMAL
NORMAL
ABNORMAL
ABNORMAL
ABNORMAL
Replace defective parts.
Check
SV5, SV11 circuit
leakage.
Correct piping to normal
piping.
Check
incorrect piping of
discharge gas/suction
gas main
pipes.
Repair FS unit.
Is
FS unit normal?
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
No
No
No
[P15]
Check code Cause
Check code name
Gas leak detection
TD condition (Sub-code: 02)
1. Outdoor unit service valve closed
2. Outdoor PMV error
3. TD sensor error
4. SV4 circuit error
5. Refrigerant shortage, clogging refrigerant circuit
Are service
valves of discharge
gas pipe, suction gas pipe
and liquid sides
fully opened?
Open service valves fully.
Repair outdoor PMV.
Replace TD1, TD2 or
TD3 sensor.
Repair SV4 valve circuits.
Correct wiring.
Refrigerant shortage,
clogging, pipe breakage.
(Coil, valve body, coil installation,
disconnection of cable, etc.)
(Check it using the miswiring check
function of the outdoor unit.)
(Check there is no clogging and pipe
breakage, and then recharge refrigerant.)
Connectors: PMV1: CN300,
PMV2: CN301, PMV4: CN303
Are
characteristics
of TD1, TD2 and TD3
sensor resistance
normal?
Is SV4 valve
circuit normal?
(Coil misinstallation,
valve leakage)
Are not indoor
units in different
refrigerant circuit
connected?
Is outdoor PMV normal?
1. Connector connection
2. Wiring
3. Coil
4. Valve body
5. Outdoor I/F P.C. board
* See "Outdoor unit temperature sensor
characteristics" on "9-9. Sensor Characteristics".
NORMAL
NORMAL
ABNORMAL
ABNORMAL
Correct piping to normal
piping.
Check
incorrect piping of
discharge gas/suction
gas main
pipes.
Repair FS unit.
Is
FS unit normal?
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