IV–61F16 Compressor Inlet/Outlet Pressure Sensor Errorc Error detection methodWhen pressure in the following chart is detected.Detect Open Detect Short Circuit– 0.5MPa(0V)5.5MPa(4.9V)d Troubleshooting1Checkpressuresensor1-1Install gauge on large tube and small tube service port, andopen valve (see *1 below for procedure) to equalize pressurewithin refrigeration circuit. Gauge display nearly identical tooutdoor main board display?Yes Operate againNo 2-12Check wiring 2-1Is there a DC 5V voltage between the following terminals ofthe outdoor main board connector 6P (red) CN049?No. 1 (+) and No. 3 (-), and No. 4 (+) and No. 6 (-)Yes 2-2No Replace outdoor mainboard2-2Is the voltage between the following terminals of the outdoormain board connector 6P (red) CN049 appropriate for thepressure?No. 2 (+) and No. 3 (-), and No. 5 (+) and No. 6 (-)Yes Replace outdoor mainboardNo 2-32-3Wiring connection/contact poor, or wire broken, betweenoutdoor main board connector 6P (red) CN049 andcompressor inlet/outlet pressure sensors?Yes Repair wiringNo Replace pressure sensor● For work procedure for replacing outdoor main board, see “5. Reference Document”.● For board and Electrical Wiring Diagram, see Chapter 6.• Outdoor main board: page VI-2• Outdoor power board: page VI-3• Converter board: VI-4• Indoor control board for DC motor models: page VI-5• Outdoor Unit Electrical Wiring Diagram: page VI-6*1 Perform from outdoor main board. Issue “V OPEN” command from Maintenance Panel Menu 4, then pressthe Set key (S005) to light the LED. The valve opens. Press again to turn off the LED, and the valve closes.Compressor outletpressure sensorCompressor inletpressure sensorBlack Red Brown(White)Sensor voltage (DCV)Compressor outlet pressure(MPa)Compressor inlet pressure(MPa)Orange Black Red
