Panasonic 2WAY Multi - Page 56

IV–43
6
Water heat
exchange unit’s
control board
and surrounding
area
6-5
Is the varister (VA2) short-circuited between the phases or
severely deteriorated?
Yes
Replace the varister
(VA2)
No 6-6
6-6
Is electrical voltage being output to the secondary side of
the fuses (F1, F2)?
Yes 6 -7
No
Check that the wiring
and terminals around
the fuses are normal
and replace the fuses
6-7
Is electrical voltage being output to the secondary side of
the noise fi lter (RF1?)
Yes 6 - 8
No
Check that the wiring
and terminals around
RF1 are normal and
replace the RF1
6-8
Is electrical voltage being output to the secondary side of
the power transformer (PT1?)
Yes
Replace the water heat
exchanger unit’s control
board
No
Check that the wiring
and connectors around
PT1 are normal and
replace the PT1
● See “5. Reference Document” for details on the procedure for replacing the water heat exchanger unit’s
control board.
● 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
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