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MODEL RAC-25NH5, RAC-35NH5
[No operation or abnormal operation]
Is AC220-240V
being
supplied to terminal L and N?
Is the 25A
fuse normal?
If the 25A fuse has blown, be aware
that other parts may also be
defective (mainly
, varistor 2, diode
stack, smoothing capacitors, system
power module, etc.).
No
Ye
s
CHECKING THE OUTDOOR UNIT ELECTRICAL PARTS
Replace any defective parts.
Is the power circuit normal?
See the description on
power circuit for details.
Is 5V being generated
between Pin
4
(0V) and pin
3
(5V) at CN 18 (test pin)?
Operate the outdoor unit
according to the instruction
“How to operate the outdoor
unit independently
”.
How did the self-diagnosis
lamp (LD301) light?
Is the switching power circuit OK?
Has the 3A fuse blown?
See the self-diagnosis lamp
lighting mode.
Check to see whether the
connected C and D cable
correctly? If reversed, correct the
cable connection.
Replace any defective parts.
If the 3A fuse has blown, the
switching transformer (T1),
R906, etc. may also be
defective.
()
No
Ye
s
Ye
s
No
Ye
s
Содержание RAC-25NH5
Страница 31: ... 29 MODEL RAK 25NH5 RAK 35NH5 ...
Страница 37: ...CIRCUIT DIAGRAM MODEL RAK 25NH5 RAK 35NH5 37 ...
Страница 38: ...CIRCUIT DIAGRAM MODEL RAC 25NH5 RAC 35NH5 39 ...
Страница 39: ... 41 PRINTED WIRING BOARD LOCATION DIAGRAM MODEL RAK 25NH5 RAK 35NH5 MAIN P W B Marking on P W B ...
Страница 40: ... 42 MODEL RAK 25NH5 RAK 35NH5 RECEIVING P W B Marking on P W B ...
Страница 41: ... 43 MODEL RAC 25NH5 RAC 35NH5 MAIN P W B Marking on P W B COMPONENT SIDE ...
Страница 53: ... 64 ...
Страница 54: ... 65 ...
Страница 55: ... 66 ...
Страница 56: ... 67 ...
Страница 90: ... 101 SELF DIAGNOSIS LIGHTING MODE MODEL RAC 25NH5 RAC 35NH5 ...
Страница 92: ... 103 2 Outdoor unit does not operate but receives remote infrared signal ...
Страница 94: ... 105 6 Check the main P W B power circuit ...
Страница 95: ... 106 CHECKING THE REMOTE CONTROLLER ...
Страница 100: ... 111 ...
Страница 106: ... 117 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL RAK 25NH5 RAK 35NH5 ...
Страница 112: ...HITACHI PM NO 0324E Printed in Malaysia RAK 25NH5 RAC 25NH5 RAK 35NH5 RAC 35NH5 ...