E03 Indoor Unit Receive Failure From Remote Controller (Central - Panasonic 2WAY Multi Technical & Service Manual

E03 Indoor Unit Receive Failure from Remote Controller (Central)

Error detection method
1) With indoor unit connected
An error is determined when no transmission is received from the remote controller (central) for 3 minutes,
or when no transmission is received from the central equipment for 15 minutes.
• When transmission had been normal but the remote controller wiring became broken or misrouted.
• Broken indoor and outdoor operating wiring to central control equipment.
• Only sub remote controller is set.
• No remote controller, with central control equipment power OFF.
• No remote controller, and only sub remote controller is set.
2) When the water heat exchanger unit is connected
An error may be assumed when communication from the remote controller is not received by the water heat
exchanger unit for 3 minutes.
• When power is not being supplied to the remote controller.
• When the parallel array address has not been set or is incorrectly set.
• When the terminal resistor has not been set or is incorrectly set.
• When the remote control wire is severed, short-circuited, has a ground fault or the wrong polarity.
• When a source of noise is located nearby.
• When the remote controller or peripheral equipment is defective.
Troubleshooting
1) When the indoor unit is connected
1
1-1 Is central control equipment connected?
Central
control
equipment
1-2 Is the central control equipment power OFF?
Are all the central control main-sub switches on the connected
1-3
central control equipment set to "sub"?
Of the connected central control equipment, set only the highest-ranking central control unit
1-4 to "main", and set the remaining units to "sub". Ranking order from high to low: AMY adapter
→ intelligent controller → system controller → multi-controller.
Are any broken indoor and outdoor operating wires connected
1-5
to central control equipment? (See "5. Reference Document")
2
2-1 Is this indoor unit group-controlled?
Remote
controller
Any broken wires for remote controller group link wiring 1
2-2
(white) and 2 (black)?
3
Is an option board (CN060) or wireless remote controller
3-1
Indoor
(CN041) connected to the indoor control board?
control
Does E03 disappear several minutes after disconnecting said
board
connector on the indoor control board? (When controlling with
3-2
two remote controllers and the wireless remote controller is
the main, set the other remote controller as the main).
3-3 Replace the removed option board or wireless remote controller operating unit, wiring and all.
Short-circuit, misrouting, or broken wires in indoor unit remote
3-4
controller wiring?
● 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 control board.
IV–34
Yes 1-2
No 2-1
Yes Turn power ON
No 1-3
Yes 1-4
No 1-5
Yes Repair wiring
No 2-1
Yes 2-2
No 3-1
Yes Repair wiring
No 3-1
Yes 3-2
No 3-4
Yes 3-3
No 3-4
Yes Repair wiring
Replace indoor control
No
board