Sharp AE-X7FR - Manual (Page 11)

AYXP7FR
3 – 17
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 open-
circuit. (2) Replace the indoor fan
motor.
(3) Check CN1 of the indoor
unit fan motor for secure
installation. (3) Correct the installa-
tion of CN1 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 con-
trol PCB EEPROM data error (EEPROM read data
error) Replace the indoor
unit control PWB.
Indoor/
outdoor
units in
operation 88 Control and dis-
play PCB Communication
error (1) Check for disconnected
connector between control
PCB and display PCB,
and open-circuit in lead
wires. (1) Insert connectors cor-
rectly, or replace con-
trol PWB.
(2) Check that control PCB
outputs signals correctly. (2) Replace control PWB.
Status of
indoor/
outdoor
units
Indication
by LED1
on out-
door unit
*2
Malfunction
No. dis-
played on
main unit
display sec-
tion *1
Content of diagnosis Inspection location/method Remedy
Main
cate-
gory
Sub-
cate-
gory
Main category Sub-category