AEXM24HR
4 – 5
MISWIRING CHECK
Miswiring check must be performed after installation, reinstallation 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.
(2) Check that all LED
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.
(3) Press the WIRE CHECK SWITCH (SW2) 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.
(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.)
(5) All LED
( LED1, 2, 3, 4) 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.)
(6) Place the control box cover back in the reverse order.
*Correction points on error detection
1. Are all piping the total multi air conditioner system connected?
2. Are the stop valves open?
SW 1
S W 1
UNIT D
UNIT D
SW 2
S W 2
PUMP DOWN
P UMP DOW N
WIRE CHECK
W IR E C HE C K
UNIT B
UNIT B
LED 2
LE D 2
UNIT C
UNIT C
UNIT A
UNIT A
LED 1
LE D 1
LED 4
LE D 4
LED 3
LE
D
3
Summary of Contents for AE-XM24HR
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