220
Y
es
Y
es
No
No
Y
es
No
No
Y
es
Y
es
No
No
Y
es
[P17] / [bb]
(AI-NET)
Check code
Cause
Check code name
Discharge temp
TD2 error
1.
Outdoor unit service valve closed
2.
Outdoor PMV error
3.
TD sensor error
4.
Refrigerant shortage, clogging of refrigerant circuit
5.
4-way valve error
6.
SV4 circuit leakage, misinstallation
Are service valves
of gas and liquid
sides fully opened?
Open service valves fully
.
Repair outdoor PMV
.
Replace
TD2
sensor
.
Check 4-way valve.
Correct installation of
valve coil.
Replace SV42 valve.
Correct wiring
Refrigerant shortage,
clogging, pipe breakage
Are indoor units of a
dif
ferent refrigerant line
connected?
A
re
characteristics
of
TD2
sensor
resistance
normal?
Does discharge
refrigerant gas bypass
to suction side through
4-way valve?
Connectors: PMV1: CN300,
PMV2: CN301, PMV4: CN303
(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?
1. Connector connection
2. Wiring
3. Coil
4. V
alve body
5. Outdoor I/F P
.C. board
SV4 circuit
1.
Are SV41, SV42
and SV43
valve coils installed correctly?
2. Is SV42 circuit sealed
correctly (no leakage)?
Y
es
Y
es
No
No
Y
es
No
Y
es
No
No
Y
es
[P15] / [AE]
(AI-NET)
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 gas
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 dif
ferent
refrigerant circuit
connected?
Is outdoor PMV normal?
1. Connector connection
2. Wiring
3. Coil
4. V
alve body
5. Outdoor I/F P
.C. board
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