Hitachi RAF-35RPA RAF35RPA Manuel D’Utilisation
Codes de produits
RAF35RPA
14-3
14.1 PRECAUTIONS FOR TROUBLE SHOOTING
14.1.1 MONOZONE RAC-25NPA / 35NPA / 50NPA
Warning
Remember that voltage of 155-170V is applied to the 0V line
on the P.W.B. or the like as shown in the diagram below
on the P.W.B. or the like as shown in the diagram below
Warning
When using an oscilloscope, never ground it. Don’t forget that
high voltage as noted in the left figure may apply to the
oscilloscope.
high voltage as noted in the left figure may apply to the
oscilloscope.
14.1.2 MULTIZONE RAM-36NP2A
Warning
Remember that voltage of 155-170V is applied to the 0V line
on the P.W.B. or the like as shown in the diagram below
on the P.W.B. or the like as shown in the diagram below
Warning
When using an oscilloscope, never ground it. Don’t forget that
high voltage as noted in the left figure may apply to the
oscilloscope.
high voltage as noted in the left figure may apply to the
oscilloscope.
Power source
System power module
MAIN P.W.B.
Control
P.W.B.
Indoor
L
N
Compressor
motor
C
D
DC35V
0V
0V
P
o
w
e
r m
o
d
u
le
AC
T
m
odul
e
ⓑ
ⓐ
Across ⓐ-ⓑ (0V line) approx 260~360V
Across ⓐ–ground approx 155~170V
Across ⓑ (0V line)-ground approx 155~170V
Across ⓐ–ground approx 155~170V
Across ⓑ (0V line)-ground approx 155~170V
Outdoor unit
P.W.B.
P.W.B.
Always keep your
hands and metallic
things away from
the enclosure of the
oscilloscope
hands and metallic
things away from
the enclosure of the
oscilloscope
DANGER!
Don’t install
the ground
line
Don’t install
the ground
line
Power source
System power module
MAIN P.W.B.
Control
P.W.B.
Indoor
L
N
Compressor
motor
C
D
DC35V
0V
0V
P
o
w
e
r m
o
d
u
le
ACT
m
o
d
u
le
ⓑ
ⓐ
Across ⓐ-ⓑ (0V line) approx 360V
Across ⓐ–ground approx 155~170V
Across ⓑ (0V line)-ground approx 155~170V
Across ⓐ–ground approx 155~170V
Across ⓑ (0V line)-ground approx 155~170V
Outdoor unit
P.W.B.
P.W.B.
Always keep your
hands and metallic
things away from
the enclosure of the
oscilloscope
hands and metallic
things away from
the enclosure of the
oscilloscope
DANGER!
Don’t install
the ground
line
Don’t install
the ground
line