Panasonic 2WAY Multi - F16 Compressor Inlet;Outlet Pressure Sensor Error

IV–61
F16 Compressor Inlet/Outlet Pressure Sensor Error

Error detection method
When pressure in the following chart is detected.
Detect Open Detect Short Circuit
– 0.5MPa
(0V)
5.5MPa
(4.9V)

Troubleshooting
1
Check
pressure
sensor
1-1
Install gauge on large tube and small tube service port, and
open valve (see *1 below for procedure) to equalize pressure
within refrigeration circuit. Gauge display nearly identical to
outdoor main board display?
Yes Operate again
No 2-1
2
Check wiring
2-1
Is there a DC 5V voltage between the following terminals of
the outdoor main board connector 6P (red) CN049?
No. 1 (+) and No. 3 (-), and No. 4 (+) and No. 6 (-)
Yes 2-2
No
Replace outdoor main
board
2-2
Is the voltage between the following terminals of the outdoor
main board connector 6P (red) CN049 appropriate for the
pressure?
No. 2 (+) and No. 3 (-), and No. 5 (+) and No. 6 (-)
Yes
Replace outdoor main
board
No 2-3
2-3
Wiring connection/contact poor, or wire broken, between
outdoor main board connector 6P (red) CN049 and
compressor inlet/outlet pressure sensors?
Yes Repair wir ing
No 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 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
pressure sensor
Compressor inlet
pressure sensor
Black Red Brown
(White)
Sensor voltage (DCV)
Compressor outlet pressure(MPa)
Compressor inlet pressure(MPa)
Orange Black Red
GHPtroubleshooting.indbIV‒61GHPtroubleshooting.indbIV‒61 2012/11/2611:20:112012/11/2611:20:11