Sharp AY-ZP35PR Service Manual page 40

Problem Outdoor
symptom unit indi-
cation
(LED1)
Indoor and 7-time
outdoor units
do not oper-
ate.
Indoor and 8-time
outdoor units
do not oper-
ate.
Indoor unit Malfunc-
tion No.
Lamp Main Sub
Timer (Orange) 7 0
Operation (Green)
Plasmacluster
(Blue)
Timer (Orange) 1
Operation (Green)
Plasmacluster
(Blue)
Timer (Orange) 2
Operation (Green)
Plasmacluster
(Blue)
Timer (Orange) 3
Operation (Green)
Plasmacluster
(Blue)
Timer (Orange) 8 0
Operation (Green)
Plasmacluster
(Blue)
Content of diagnosis
Main Sub
Outdoor unit AC over current
AC Current error
AC current error
when OFF
AC maximum
current error
AC current defi-
ciency error
Abnormal Abnormal wire
wire check check error
3-17
Check point
(1) Check the outdoor (1) Ensure unob-
unit air outlet for structed air flow
blockage. from the outdoor
unit air outlet.
(2) Check the outdoor (2) Check the outdoor
unit fan for proper unit fan motor.
rotation.
(1) IPM continuity check (1) Replace the out-
door IPM PWB
(1) Check the outdoor (1) Ensure unob-
unit air outlet for structed air flow
blockage. from the outdoor
unit air outlet.
(2) Check the outdoor (2) Check the outdoor
unit fan for proper unit fan motor.
rotation.
(1) Check if there is an (1) Replace the out-
open-circuit in the door unit control
secondary winding PWB assembly.
of the current trans-
former of the outdoor
unit control PWB.
(2) Check if the refriger- (2) Charge the speci-
ant volume is abnor- fied amount of
mally low. refrigerant.
(3) Check if the refriger- (3) Correct refrigerant
ant flows properly. clogs. (Stop valve,
pipe, expansion
valve)
(1) Check the expansion (1) Replace the out-
valve. (unit A - C) door control board
assembly.
(2) Are four expansion (2) Reattach
valves connected by
mistake
(3) Check the wiring (3) Check the wiring
between units. between units.
AY-ZP35PR
Action