Hitachi RAF-50FX8 Service Manual page 130

<Reference>
When stop operation with LD301 blinks 12 times, it may be a DC Fan Motor broken.
In this case, please check CN6 and CN12 connection first. It makes Fan Motor Lock also if those connectors are in
misconnection.
DC Fan Motor has broken when 2A Fuse was burned. Please replace both DC Fan Motor and 2A Fuse together.
It will make "Fan Lock Stop" when something has disturb the Fan rotation by inserting materials into propeller fan or ice
has growing inside of outdoor unit by snowing.
It may make "Fan Lock Stop" by strong wind(ex.17m/sec. or above) against the Fan rotation. In this cace,
unit will be restart again after a while.
In case of "Fan Lock Stop" even though the DC Fan Motor is rotating correctly, the possible casue is Fan Motor problem
or PQ102 on board or control board problem. Stop after the Fan motor runs 2 minutes, Fan Motor may be broken.
<Caution>
Please take care for the electrical shock by high voltage of DC Fan Motor power source which is common with compressor
when you are servicing this unit.
You can not confirm the coil and wiring of Motor due to the Fan Motor include the control circuit inside.
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