Panasonic 2WAY Multi Technical & Service Manual page 44

● The designation (/) is used in the table to indicate indoor boards for DC and AC motor models.
● There is no TEST pin on the indoor board for AC motor models.
● See "5. Reference Document" for checking remote controller.
● 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
● See instructions packaged with servicing indoor board for procedure on replacing indoor non-volatile
memory (EEPROM) and replacing indoor control board.
2) When the water heat exchanger unit is connected
1
Is electricity being supplied to the water heat exchange
1-1
Unit power
unit?
2
2-1 Has an address been set in the remote controller?
Remote
controller
Is the address set in the remote controller a serial
(parallel array)
2-2
number?
address
Do the addresses on the remote controller and on the
2-3
water heat exchange unit match up?
Does the number of addresses on the remote controller
2-4
match up with the number of water heat exchanger units?
Is the parallel array address on the water heat exchanger
2-5
unit set at anything other than [0]?
Is the parallel array address on the water heat exchanger
2-6
unit set at [1 - 5]?
3
Are the terminating resistance switches on the remote
Terminating
controller and on water heat exchanger unit's control
3-1
resistance
board located at both ends of the wire linking the remote
controller with the water heat exchanger unit set at [ON]?
4
Is the remote controller's wire severed (connector or
4-1
Remote
terminal disconnected?)
controller
wires (wires
4-2 Is the remote controller's wire short-circuited?
linking between
the remote
controller to 4-3 Is the remote controller's wire grounded?
the water heat
exchanger unit)
4-4 Is the remote controller's wire polarity (+-) reversed?
Are the remote controller wire (TB5-4, TB5-5) and outdoor
4-5
unit wires (TB1-(1), (2)) connected to the wrong places?
5
Noise
5-1 Is a source of noise located nearby?
IV–31
Yes 2-1
No Switch on the power
Yes 2-2
No Set the address
Yes 2-3
No Set a serial number
Yes 2-4
No Match up t he addresses
Yes 2-5
Match up the number of
No
connected units
Yes 2-6
Set any parallel array
No
address other than [0]
Yes 3-1
Set the parallel array
No
address at [1 - 5]
Yes 4-1
Set the terminating
No resistance for both ends
of the link wire to [ON]
Yes Repair the severed wire
No 4-2
Yes Repair the short-circuit
No 4-3
Yes Repair the ground
No 4-4
Yes Switch the wires around
No 4-5
Yes Repair the wiring
No 5-1
Set up noise
Yes
countermeasures
No 6-1