Hitachi HARC-BX E Manuel D'installation page 19

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No. Phenomenon
Check if the Dip Switches on
HARC-BX E are set correctly.
Check if the system and address of
the air conditioner are set correctly.
Check if transmission cable with air
conditioners is disconnected.
Check if manufacturer's specified
HARC-BX E does
transmission cable connected with air
not identify the air
conditioners is used.
conditioner even
though power Check if transmission cable connected
with air conditioners is wired along the
supply is ON.
("" displayed on the power source wire.
7-Segment). Check if end terminal resistance and
After the indication quantity on the transmission cable
2
of "  " on the between air conditioner are set
7-Segment with correctly.
check mode, the
Check if transmission circuit is
quantity of actual air
operating normally upon the self-
conditioners did not
inspection.
identical to these
Check if the power supply of air
addresses.
conditioners is ON.
Check if transmission cable between
air conditioners is disconnected.
Check if LED (H-L) for transmission
display is ON.
Check if LED (H-L) for transmission
display is OFF.
Check if manufacturer's specified
transmission cable connected with air
conditioners is used.
Check if transmission cable connected
with air conditioners is wired along
power source wire.
Check if end terminal resistance and
quantity on the transmission cable
between air conditioners are set
correctly.
Check if transmission circuit is
operating normally upon the self-
inspection.
7-Segment indicates Check if the power supply of air
3
" ". conditioners is ON.
Check if manufacturer's specified
transmission cable connected with air
conditioner is used.
Check if transmission cable connected
with air conditioner is wired along
power source wire.
Check if end terminal resistance and
quantity on the transmission cable
between air conditioner are set
correctly.
Check if transmission circuit is
operating normally upon the self-
inspection.
MAINTENANCE AND SERVICE
Items to be checked
Dip Switch should be re-set according to
the section 4.1 in the installation
maintenance manual and operation manual
for how to set HARC-BX E Dip Switch.
Address should be re-set according to the
section 4.2 in the installation maintenance
manual and operation manual.
Connection of wire should be examined.
Use Twist pair cable (0.75 mm
Provide a space of at least 150 mm
between wires.
Only one end resistance should be set in
one system.(Resistance between wire is
approx. 150 Ω ).
End resistance should be set to the
transmission wire of air conditioner.
Air conditioner should be turned ON.
Connection of wiring should be examined.
Check transmission circuit of air
conditioner by self-inspection. And check if
transmission circuit of air conditioners is
operating normally.
Check transmission circuit of air
conditioner by self-inspection. And check if
transmission circuit of air conditioners is
operating normally.
Use Twist pair cable (0.75 mm
Provide a space of at least 150 mm
between wires.
Only one end resistance should be set in
one system.(Resistance between wire will
be approx. 150 Ω ).
End resistance should be set to the
transmission wire of air conditioners side.
Air conditioners should be turned ON.
Use Twist pair cable (0.75 mm
Provide a space of at least 150 mm
between wires.
Only one end resistance should be set in
one system. (Resistance between wire will
be approx. 150 Ω ).
End resistance should be set to the
transmission wire at the air conditioner
side.
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Action
2
).
2
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2
).