Assessments - 3, GPA: 4
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SV5 circuit error 10. Discharge line check valve malfunction 11. Refrigerant overcharge Auxiliary code : Compressor 1 side 02: Compressor 2 side Note) High-pressure SW is normally closed. (B contact) 82 Check I/F P. C. board. Failure Replace Check and correct cabling. Open service valve fully. Replace defective parts. Repair the flow selector unit. Replace the high-pressure sensor. Correct piping. Check parts. Failure Replace All cooling operation To B All heating operation To C Reset power supply, and start a test operation corresponded to the season. Check operation of PMV3 SV12 valve. Is the flow selector normal? Is circuit cabling normal? Is service valve fully opened? Does high-pressure SW operate? Are parts of high-pressure SW normal? Check mispiping of discharge/suction gas main pipes. Are characteristics of high-pressure sensor normal? NO NO NO YES YES NO Abnormal Abnormal Abnormal YES Normal YES Normal Normal B All cooling operation ( ) Refrigerant overcharge, clogging, pipe breakage, abnormal overload condition All heating operation Check indoor P. C. board. Failure Replace Repair faulty parts. Replace TC2 or TCJ sensor. Replace PMV body. Is SV4 circuit normal? Is SV11 circuit normal? Are connector connection, heat exchanger, fan, and fan motor normal? Are characteristics of TC2 and TCJ sensor resistance value normal? Is connector connection, coil normal? Repair SV4 circuit. Coil error, clogging, disconnection of wiring, etc. Are not indoor units of different refrigerant circuit connected? Is there clogging of valve? Is indoor PMV normal? Does heating indoor fan normally operate? Repair faulty parts. Repair faulty position. Refrigerant overcharge, clogging,pipe breakage, abnormal overload condition Check and correct the cabling. Check with miscabling check function of outdoor unit. Eliminate the interfered causes. Is there a cause to interfere operation of indoor heat exchanger? 1 Air filter clogging 2 Heat exchanger clogging 3 Air short circuit NO YES YES YES YES YES YESYES YES YES YES NO NO NO NO Is 4-way valve normal? Replace 4-way valve. NO NO YES NONO NO NO ( ) ( ) Coil error, clogging, disconnection of wiring, etc. Connector connection, fan IPDU, fan motor, wiring Repair faulty parts. Eliminate the interfered causes. Repair SV2 circuit. A Is there a cause to interfere operation of heat exchanger of outdoor unit? 1. Heat exchanger clogging 2. Air short circuit Is SV2 circuit normal? Does cooling outdoor fan normally operate? Is there no crack or coming-off of fan? NONO YES NO YESYES NO YES Check code name Check code name Cause of operation [P05] Open phase, negative phase 1. Power supply open phase 2. Power supply negative phase • Check the phase power line of outdoor unit. • Check error of outdoor I/F P.C. board. • Check there is no looseness, etc of terminal. Check code name Check code name Cause of operation Check code name Check code name Cause of operation [P07] Heat sink overheat error 1. Power voltage error 2. Outdoor...
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