Read Sharp AE-XM24CR (serv.man14) Service Manual online
58
AY-XM7/9/12CR
AY-XPM7/9/12CR
AE-XM18/24CR
AY-XPM7/9/12CR
AE-XM18/24CR
MISWIRING CHECK
Miswiring check must be performed after installation, re-
installation and service.
This multi-type air conditioner is designed with a WIRE
CHECK SWITCH on the outdoor unit, and miswiring of
unit-to-unit wiring will be self-corrected by microcomputer.
Miswiring check may not be performed when the outdoor
temperature is below 5˚C.
(1) Complete the unit-to-unit wiring/piping and perform the
installation and service.
This multi-type air conditioner is designed with a WIRE
CHECK SWITCH on the outdoor unit, and miswiring of
unit-to-unit wiring will be self-corrected by microcomputer.
Miswiring check may not be performed when the outdoor
temperature is below 5˚C.
(1) Complete the unit-to-unit wiring/piping and perform the
air removing of the pipes. Turn the electrical circuit
breaker ON. Before turning the circuit breaker ON,
make sure no one is working on the indoor units
installation. Electrical shock or injury may occur.
breaker ON. Before turning the circuit breaker ON,
make sure no one is working on the indoor units
installation. Electrical shock or injury may occur.
(2) Check that all LED (AE-XM18CR:LED51,52/AE-
XM24CR:LED50,51,52) on the display board unit are
flashing synchronously in a slow (one flash per
second) cycle. If either one or more of all LED is/are
kept lighted on, check and correct the wrong wirings
among , N, 1, 2, terminals so that all LED will flash
slowly, showing normal
condition.
flashing synchronously in a slow (one flash per
second) cycle. If either one or more of all LED is/are
kept lighted on, check and correct the wrong wirings
among , N, 1, 2, terminals so that all LED will flash
slowly, showing normal
condition.
(3) Press the WIRE CHECK SWITCH (SW50) on the
display board unit for 5 seconds or more. The flashing
of all LED will change. Miswiring (mispiping) check will
start and the indoor and outdoor units will start
operating. (The red operation lamp on the indoor unit
will flash, and three BEEP will be emitted. ) Miswiring
of unit-to-unit wiring will be self-corrected.
of all LED will change. Miswiring (mispiping) check will
start and the indoor and outdoor units will start
operating. (The red operation lamp on the indoor unit
will flash, and three BEEP will be emitted. ) Miswiring
of unit-to-unit wiring will be self-corrected.
(4) Wrong piping works cannot be corrected, and will be
detected as an error. When an error is detected during
checking, all LED will show triple flash for eight times.
The indoor and outdoor operation will stop. Turn the
circuit breaker OFF and check and correct the
miswiring (mispiping)*. After correction, return to step
1 and repeat the miswiring (mispiping) check again. If
error is still detected, or other types of LED signal
should be indicated, please contact a service
technician. (Refer to wiring diagram attached inside
the outdoor unit cabinet for
self diagnosis signal.)
checking, all LED will show triple flash for eight times.
The indoor and outdoor operation will stop. Turn the
circuit breaker OFF and check and correct the
miswiring (mispiping)*. After correction, return to step
1 and repeat the miswiring (mispiping) check again. If
error is still detected, or other types of LED signal
should be indicated, please contact a service
technician. (Refer to wiring diagram attached inside
the outdoor unit cabinet for
self diagnosis signal.)
(5) All LED (AE-XM18CR:LED51,52/AE-XM24CR:
LED50,51,52) will flash synchronously in a slow (one
flash per second) cycle when miswiring (mispiping)
check is completed with no error detection (3~6
minutes), and the operation of indoor and outdoor
units will stop .(The red operation lamp flashing on
the indoor unit will go off.)
flash per second) cycle when miswiring (mispiping)
check is completed with no error detection (3~6
minutes), and the operation of indoor and outdoor
units will stop .(The red operation lamp flashing on
the indoor unit will go off.)
(6) Place the control box cover back in the reverse order.
AUX.
Lo
Hi
a
SW51
SW51
UNIT B
UNIT B
UNIT C
UNIT C
SW50
SW50
PUMP DOWN
PUMP DOWN
WIRE CHECK
WIRE CHECK
LED51
LED51
UNIT A
UNIT A
LED52
LED52
LED50
LED50
Stop valve
(gas side)
(gas side)
Stop valve
(liquid side)
(liquid side)
Service port
Hose
Compound
gauge
gauge
Gauge manifold
SW51
SW51
UNIT B
UNIT C
SW50
SW50
PUMP DOWN
PUMP DOWN
WIRE CHECK
WIRE CHECK
(UNIT C : AE-X24CR only)
LED51
LED51
UNIT A
UNIT A
LED52
LED52
LED50
LED50
TEST RUN
(1) Open the open panel to see the control section.
(2) Start the operation with the remote control.
(3) Press the " AUX. " button on the unit for 5 seconds or
(2) Start the operation with the remote control.
(3) Press the " AUX. " button on the unit for 5 seconds or
the cooling operation and select the heating mode on
the remote control.
the remote control.
button again to stop the operation
Display
