Panasonic 2WAY Multi - A07 Fuel Gas Valve Error

IV–11
A07 Fuel Gas Valve Error
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Error detection method
• An error fl ag is set when it is judged that the fuel gas valves did not close when engine operations were
halted (excluding when halted owing to malfunctions) and an error will be triggered when this occurs fi ve
consecutive times.
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Troubleshooting
1
Circuit
board / Gas
solenoid
valve
1-1
Set the STOP switch on the outdoor unit’s main board to [STOP]
to completely halt operations of the outdoor unit. Is 180V DC being
applied between the outdoor unit’s power board connector 7P (white)
CN041 No.1 (+) to No.3 (-), and between No.5 (+) to No.7 (-) when the
unit is halted?
Yes 1-2
No
Replace the fuel
gas solenoid
valve
1-2
Is the same problem as explained in 1-1 still occurring after the
outdoor unit’s power board has been replaced?
Yes
Replace the
outdoor unit’s
main board
No End
● 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
GHPtroubleshooting.indbIV‒11GHPtroubleshooting.indbIV‒11 2012/11/2611:20:062012/11/2611:20:06