Panasonic 2WAY Multi Technical & Service Manual page 105

Any poor connection and broken wires in wiring between the
7-5
outdoor main board and the relay board?
Adjust the relay board.
In No. 4 test mode when "v_open" (valve open), is there an
output voltage (AC 200V) from discharge valves 1-1, 1-2,
7-6
discharge valve 2, suction valve 2-1 and 2-2?
Does suction valve 1 output a voltage (AC 200V) during
cooling operation?
Adjust the solenoid valve coil.
(Be sure to turn the power off before starting work.)
Disconnect the connectors of discharge valve 1-1, 1-2,
discharge valve 2, suction valve 1, suction valve 2-1 and 2-2
from the relay board and measure the resistance between No.
7-7
1 and 3.
Normal value (20°C) discharge valve 1-1, 1-2: 543 Ω discharge
valve 2: 1132 Ω
Suction valve 1: 1197 Ω suction valve 2-1, 2-2: 543 Ω
Is the coil operating normally?
IV–92
Yes Repair wiring
No 7-6
Yes 7-7
No Replace relay board
Replace
Resistance is
solenoid
normal
valve
Replace
Abnormal the
resistance solenoid
valve coil