Hitachi RAF-25NH4 Données Techniques page 273

4. All systems stop from several seconds to several minutes after operation is started
(all indicators are also off)
Set to the ÒHiÓ fan mode.
The operation lamp lights once and goes out in
5-10 seconds.
Disconnect CN10, CN15 and set to the fan mode again.
The operation lamp lights once and goes out in
5-10 seconds.
Can the indoor fan be lightly turned by hand?
(Set the power switch to ÒoffÓ to check.)
Replace the indoor fan motor.
Yes
No
Yes
Yes
Check to see if shorting, etc.
has occurred in the P.W.B.
pattern.
No
Check to see if the indoor fan is
touching the chassis,etc.
If it does, repair.
300