Mitsubishi Electric PAA-A18AA1 Manual De Mantenimiento página 44

Symptom
Wired remote controller
PLEASE WAIT For about 2
minutes
following power-
on
PLEASE WAIT →
Error code
After about 2
minutes has
Display
expired
messages do
following power-
not appear even
on
when operation
switch is turned
ON (operation
lamp does not
light up).
NOTE
Operation is not possible for about 30 seconds after cancellation of function selection.
(Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED 1 (power for
microcomputer)
LED 2 (power for remote
controller
LED 3 (communication
between indoor and outdoor
units)
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 and all-
LED 1, 2 (PCB in
outdoor unit)
After LED 1, 2 are
lighted, LED 2 is turned
off, then only LED
1 is lighted. (Correct
operation)
Only LED 1 is lighted.
→ LED 1, 2 blink.
Only LED 1 is lighted.
→ LED 1, 2 blinks
twice, LED 2 blinks
once.
Indicates whether control power is supplied. Make sure that this
LED is always lit.
Indicates whether power is supplied to the remote controller. This
LED lights only in the case of the indoor unit which is connected to
the outdoor unit refrigerant address "0".
Indicates state of communication between the indoor and outdoor
units. Make sure that this LED is always blinking.
44
Cause
– For about 2 minutes
after power-on, operation
of the remote controller is
not possible due to system
startup. (Correct operation)
– Connector for the outdoor
unit's protection device is
not connected. – Reverse or
open phase wiring for the
outdoor unit's power terminal
block (L1, L2, L3)
– Incorrect wiring between
indoor and outdoor units
(incorrect polarity of S1, S2,
S3) – Remote controller wire
short
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