F16 Compressor Inlet/Outlet Pressure Sensor Error - Panasonic 2WAY Multi Technical & Service Manual

F16 Compressor Inlet/Outlet Pressure Sensor Error

Error detection method
When pressure in the following chart is detected.
Detect Open
Troubleshooting
1 Install gauge on large tube and small tube service port, and
Check open valve (see *1 below for procedure) to equalize pressure
1-1
pressure within refrigeration circuit. Gauge display nearly identical to
sensor outdoor main board display?
2
Is there a DC 5V voltage between the following terminals of
Check wiring
2-1 the outdoor main board connector 6P (red) CN049?
No. 1 (+) and No. 3 (-), and No. 4 (+) and No. 6 (-)
Is the voltage between the following terminals of the outdoor
main board connector 6P (red) CN049 appropriate for the
2-2
pressure?
No. 2 (+) and No. 3 (-), and No. 5 (+) and No. 6 (-)
Wiring connection/contact poor, or wire broken, between
2-3 outdoor main board connector 6P (red) CN049 and
compressor inlet/outlet pressure sensors?
● 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 press
the Set key (S005) to light the LED. The valve opens. Press again to turn off the LED, and the valve closes.
Compressor outlet Compressor inlet
pressure sensor pressure sensor
Black Red Brown
Orange Black Red
– 0.5MPa
(0V)
(White)
IV–61
Detect Short Circuit
5.5MPa
(4.9V)
Yes Operate again
No 2-1
Yes 2-2
Replace outdoor main
No
board
Replace outdoor main
Yes
board
No 2-3
Yes Repair wiring
No Replace pressure sensor
Compressor inlet pressure(MPa)
Compressor outlet pressure(MPa)