35
HWE16080
TROUBLESHOOTING
10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA
Note: Refer to the manual of outdoor unit for the detail of remote controller.
Phenomena
Cause
Countermeasure
(1) LED2 on indoor controller board is
off.
When LED1 on indoor controller board is
also off.
1
Power supply of rated voltage is not
supplied to outdoor unit.
1
Check the voltage of outdoor power
supply terminal block (L,N) or (L
3
,N).
When AC 208~230V is not detected.
Check the power wiring to outdoor unit
and the breaker.
When AC 208~230V is detected.
—Check
2
(below).
2
Defective outdoor controller circuit board
2
Check the voltage between outdoor
terminal block S1 and S2.
When AC 208~230V is not detected.
Check the fuse on outdoor controller
circuit board.
Check the wiring connection.
When AC 208~230V is detected.
—Check
3
(below).
3
Power supply of 208~230V is not supplied
to indoor unit.
3
Check the voltage between indoor
terminal block S1 and S2.
When AC 208~230V is not detected.
Check indoor/outdoor unit connecting
wire for mis-wiring.
When AC 208~230V is detected.
—Check
4
(below).
4
Defective indoor controller board
4
Check the fuse on indoor controller
board.
Check the wiring connection.
If no problem are found, indoor controller
board is defective.
(2) LED2 on indoor controller board is
blinking.
When LED1 on indoor controller board is
also blinking.
Connection failure of indoor/outdoor unit
connecting wire
When LED1 is lit.
Check indoor/outdoor unit connecting wire
for connection failure.
1
Mis-wiring of remote controller wires
Under twin triple indoor unit system, 2 or
more indoor units are wired together.
1
Check the connection of remote
controller wires in case of twin triple
indoor unit system. When 2 or more
indoor units are wired in one refrigerant
system, connect remote controller wires
to one of those units.
2
Refrigerant address for outdoor unit is
wrong or not set.
Under grouping control system, there are
some units whose refrigerant address is 0.
2
Check the setting of refrigerant address
in case of grouping control system.
If there are some units whose refrigerant
addresses are 0 in one group, set one of
the units to 0 using SW1 (3-6) on
outdoor controller circuit board.
3
Short-cut of remote controller wires
4
Defective remote controller
34
Remove remote controller wires and
check LED2 on indoor controller
board.
When LED2 is blinking, check the
short-cut of remote controller wires.
When LED2 is lit, connect remote
controller wires again and:
if LED2 is blinking, remote controller is
defective; if LED2 is lit, connection failure
of remote controller terminal block etc.
has returned to normal.
Содержание Mr.SLIM PEAD-A12AA7
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