IVT 12PHR-N - Page 42

3-18
12PHR-N
Status of
indoor/
outdoor
units
Indication
by LED1
on
outdoor
unit*2
Malfunction No.
displayed on main unit
display section *1
Content of diagnosis Inspection
location/method
Remedy
Main
category
Sub-
category
Main
category
Sub-category
Indoor/
outdoor
units in
complete
shutdown
19 -0 Indoor unit fan Indoor unit fan
error
(1) Check the indoor
fan motor for proper
rotating operation.
(Check fan lock.)
(1) Replace the indoor
fan motor.
(2) Check the lead
wire of the indoor fan
motor for opencircuit.
(2) Replace the indoor
fan motor.
(3) Check CN3 of the
indoor unit fan motor
for secure installation.
(3) Correct the
installation of CN3 of
the indoor fan motor.
(4) No abnormality
found in above
inspections (1) through
(3).
(4) Replace the indoor
unit control PWB.
Indoor/
outdoor
units in
operation
20 -0 Indoor unit
control PCB
EEPROM data
error
(EEPROM read data
error)
Replace the indoor unit
control PWB.
Indoor/
outdoor
units in
operation
29 -0 Panel Panel open error (1) Caught of panel
hook
(1) Replace or
adjustment of the
panel.
-1 Panel close error (2) Limit switch
breakdown
(2) Replace the limit
switch.
Indoor/
outdoor
units in
operation
88 Control and
display PCB
Communication
error
(1) Check for
disconnected
connector between
control PCB and
display PCB, and
open-circuit in lead
wires.
(1) Insert connectors
correctly, or replace
control PWB.
(2) Check that control
PCB outputs signals
correctly.
(2) Replace control
PWB.
12PHR-N_S530612PHRN.indd 18 2013/8/7 15:42:17