Hitachi RAF-25NH5 Instructions De Service page 328

ROUBLESHOO ING WHEN HE IMER LAMP BLINKS
MODEL RAD-25NH5, RAD-35NH5, RAI-25NH5, RAI-35NH5, RAI-50NH5
Perform troubleshooting according to the number of times the timer lamp on the display of the indoor unit blinks.
Lamp blinking mode
2 sec
Once
2 sec
2 Times
2 sec
3 Times
2 sec
4 Times
2 sec
Times
2 sec
7 Times
2 sec
9 Times
2 sec
10 Times
2 sec
13 Times
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Cautions
(1) If the interface circuit is faulty when power is supplied, self-diagnosis will not be displayed.
(2) If the indoor unit does not operate at all, check to see if the connecting cord is reversely connected or disconnected.
All manuals and user guides at all-guides.com
Main defective
Reversing valve defective
Forced operation of
outdoor unit
Indoor / outdoor interface
defective
Outdoor electric assembly
defective
Abnormal water level
detection
During drain pump test
drive
Indoor thermistor
abnormal
Over current in DC fan
moter
IC401 defective
(
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Lamp blinking mode
2 sec
Once
2 sec
2 Times
2 sec
3 Times
2 sec
Times
2 sec
7 Times
2 sec
9 Times
2 sec
10 Times
2 sec
13 Times
Lights for 0.35 sec at
interval of 0.35 sec.
Main defective
Reversing valve defective
Forced operation of
outdoor unit
Indoor / outdoor interface
defective
Abnormal water level
detection
During drain pump test
drive
Indoor thermistor
abnormal
Over current in DC fan
moter
IC401 defective
)