Panasonic KE18NB4U - Manual (Page 55)

What is the latest self-diagnosis result ?
Condition: E12
Defect in the outdoor unit
P.C. board.
Condition: E01
Defect or connection error
in the inter-unit cable
Defect in the indoor unit
P.C. board
( Continued from the previous page A. )
A
( Continued from the previous page B. )
B
1 2 4 3 5 6
1 2 3
Outdoor Unit
Power
Fig. 3
Indoor Unit
1 2 4 3 5 6
1 2 3
Outdoor Unit
Power
Fig. 4
Indoor Unit
1 2 4 3 5 6
1 2 3
Outdoor Unit
Power
Fig. 5
Indoor Unit
Condition: E12
Condition: E01
1. Turn OFF the power and wait until the power lamp (LED)
of the outdoor unit controller is turned OFF.
2. Short-circuit between the terminals 2 and 3 on the outdoor
unit terminal strip. (Fig. 3)
1. Turn ON the power and operate the system using the
remote controller or the operation button on the indoor unit.
2. Perform the self-diagnosis five seconds after the operation
start.
1. Turn off the power and wait until the power lamp (LED)
of the outdoor unit controller is turned OFF.
2. Remove the short-circuit between the terminals 2 and 3 on
the outdoor unit terminal strip.
3. Disconnect the cable from the terminal 3 on the indoor unit
terminal strip. (Fig. 4)
Short-circuit between the terminals 2 and 3 on the indoor unit
terminal board. (Fig. 5)
1. Turn ON the power and operate the system using the
remote controller or the operation button on the indoor unit.
2. Perform the self-diagnosis five seconds after the operation
start.
What is the latest self-diagnosis result ?
Defect in the indoor unit
P.C. board
Is the voltage of about DC22V to
24V given between the terminals
2 and 3 on the indoor unit terminal strip
(Serial Communication Line) ?
(Fig. 2)
No
Defect or connection error
in the inter-unit cable
Yes
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