194
Check code name
[P13] / [47]
(d07 / AI-NET)
Check code name
Outdoor liquid back detection error
Cause of operation
1. PMV1/PMV2 error
2. Pd sensor, Ps sensor error
3. Clogging of SV2 circuit
4. Clogging of SV3B circuit, balance pipe
5. Leakage of main discharge pipe
6. Outdoor I/F P.C. board error
Check I/F P.C. board.
Is there no clogging of SV3B valve?
Is SV2 valve coil correctly connected?
Is there no leakage of check valve of
main discharge pipe in follower units in which
compressors are driven in cooling operation?
Is there no clogging of SV3B valve of
a unit other than unit with error?
Are balance pipe service valves
of all units fully opened?
Are connections of outdoor
PMV1/PMV2 connectors correct?
Are operations of outdoor
PMV1/PMV2 normal?
Are characteristics of Pd sensor/Ps sensor
output voltage normal?
Replace clogging parts.
Replace clogging parts.
PMV error
Pd sensor/Ps sensor error
Open fully balance pipe
service valves of all units.
Replace check valve
of main discharge pipe.
Correct connector connection.
(CV2: CN302)
Correct connector connection.
(CN300, CN301)
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
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