Hitachi RAF-35RPA RAF35RPA User Manual
Product codes
RAF35RPA
TROUBLESHOOTING
14-21
14.5.2 NO OPERATION OR ABNORMAL OPERATION (RAC-18/25/35WSA, RAC-25/35/50WXA, RAC-
50/60/70WPA, RAC-50FPA, RAC-50FXA, RAC-50/60/70DPA
Is AC220~240V being generated at terminals L-N?
Is the 25A fuse normal?
If the 25A Fuse has blown, other
parts may also be broken. (Mainly,
varistor, diode stack, IPM, smoothing
capacitor and etc).
parts may also be broken. (Mainly,
varistor, diode stack, IPM, smoothing
capacitor and etc).
Replace outdoor
P.W.Bs.
P.W.Bs.
Check reactor wire
connection correctly or
replace reactor.
connection correctly or
replace reactor.
Is DC 320-360V being
generated ? Refer lable on top
of electrical cover for
checking point.
generated ? Refer lable on top
of electrical cover for
checking point.
Check the connection of
reactor wires.
reactor wires.
Replace outdoor
P.W.Bs.
P.W.Bs.
Is the power circuit normal?
Refer circuit diagram.
Refer circuit diagram.
Has the 3.15A fuse blown?
Replace outdoor
P.W.B Main. (Power
circuit abnormal)
P.W.B Main. (Power
circuit abnormal)
Check outdoor fan motor.
(Please refer page for
outdoor fan motor or label
on top of electrical cover for
detail)
(Please refer page for
outdoor fan motor or label
on top of electrical cover for
detail)
Replace outdoor
P.W.B Main. (Power
circuit or fan motor
drive circuit abnormal)
P.W.B Main. (Power
circuit or fan motor
drive circuit abnormal)
Replace outdoor P.W.B
Main and outdoor fan
motor. (Fan motor or
fan motor driver circuit
abnormal)
Main and outdoor fan
motor. (Fan motor or
fan motor driver circuit
abnormal)
Supply again power supply
and ON the unit using
remote control.
and ON the unit using
remote control.
Replace outdoor
P.W.B Main. (Micro
computer or LED
abnormal)
P.W.B Main. (Micro
computer or LED
abnormal)
Yes
No
No
Yes
Normal
No
Yes
Yes
Outdoor
fan motor
normal
Outdoor fan motor
abnormal
abnormal
LD301 not lit. Power
circuit is OK.
circuit is OK.
No
Yes
Is LD301 lamp light?
No
Confirm blinking times
of LD301.
of LD301.
Yes
LD301 13 times blinking
EEPROM data reading
error
error
Replace outdoor P.W.B
Main. (Micro computer
or EEPROM abnormal)
Main. (Micro computer
or EEPROM abnormal)
Yes
No
LD301 9 times blinking
Communication error
Check connecting cable connection.
(Half insert, connect using small
diameter cable and etc).
(Half insert, connect using small
diameter cable and etc).
Check and repair the
connection of
connecting cable.
connection of
connecting cable.
Yes
Abnormal
No
Confirm indoor timer lamp blinks.
Normal
Check indoor electrical
assembly. (Check
temperature fuse for
terminal board)
assembly. (Check
temperature fuse for
terminal board)
3 times
blinking
Is the JW001 and JW002 connected?
(Forget to disconnect after do self
check)
(Forget to disconnect after do self
check)
Normal
Disconnect JW001 and
JW002, then check
again.
JW002, then check
again.
Connected
Replace outdoor P.W.B
Main. (Communication
circuit abnormal)
Main. (Communication
circuit abnormal)
Normal
No