140
Check code
[P15] / [AE]
(TCC-L / AI-NET)
Check code name
Gas leak detection
TD condition (Sub-code: 02)
Cause of operation
1. Outdoor unit service valve closed
2. Outdoor PMV error
3. TD sensor error
4. SV4 circuit error
5. Refrigerant shortage, clogging refrigerant
circuit
Coil, valve body, coil installation,
disconnection of cable, etc.
Open the service valves fully.
Repair outdoor PMV.
Replace TD sensor.
Repair SV4 circuit.
Correct cabling.
Are service valves on gas
and the liquid sides fully opened?
Are characteristics of
TD sensor resistance normal?
Is SV4 valve circuit normal?
(Coil misinstallation, valve leakage)
Are there indoor units connected
in different refrigerant circuit?
Refrigerant shortage,
clogging, pipe breakage.
*
Connectors CN300, 301 White
*
Refer to outdoor unit temperature
sensor characteristics-4.
(Check there is no clogging and pipe breakage and then recharge refrigerant.)
Is outdoor PMV normal?
1. Connector connection
2. Cabling
3. Coil
4. Valve body
5. Outdoor I/F P.C. board
( )
YES
NO
YES
YES
YES
YES
NO
NO
NO
NO
Check code
[P19] / [08]
(TCC-L / AI-NET)
Check code name
4-way valve operation error
Cause of operation
1. 4-way valve error
2. TS1 sensor/TE1 sensor error
3. Pd sensor/Ps sensor error
4. TE sensor/TL sensor misconnection
Replace sensor.
Replace sensor.
Does refrigerant gas
discharge to suction side
through 4-way valve?
*
1
Check 4-way valve.
If an error did not occur
in test operation,
restart the operation.
Does 4-way valve operate?
4-way valve error
Is 4-way valve coil
connector connected?
Are TS1, TE1, Pd, Ps sensor
connectors connected?
Are characteristics of resistance value
of TS1 and TE1 sensors normal?
Are output voltage characteristics
of Pd and Ps sensors normal?
Are connection and installation
of TE1 and TL sensors correct?
Reset the power supply and
start heating test operation.
Correct connector connection.
(4-way valve coil: CN317)
Correct connection
and installation.
*
1 Check TS and TE temperature of the outdoor unit which compressors is operated.
(I/F) SW01=[1], SW02=[6], SW03=[2]
®
TS sensor temperature
SW01=[1], SW02=[7], SW03=[2]
®
TE sensor temperature
Judgment criteria
TE sensor: Normal if TE
≤
20˚C except summer season (Outside temp 20˚C or lower)
TS sensor: Normal if TS
≤
40˚C except summer season (Outside temp 20˚C or lower)
Correct connector connection.
TS1 sensor: CN504
TE1 sensor: CN505
Pd sensor: CN501
Ps sensor: CN500
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO