Hitachi RAD-18NH7A Service Manual page 87

5. All systems stop from several seconds to several minutes after operation is started
(all indicators are also off)
Set to the "Hi" fan mode.
The operation lamp lights once and goes out in
5-10 seconds.
Disconnect, CN10 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 "off" to check.)
Replace the indoor fan motor.
Yes
No
Yes
– 97 –
Yes
Check to see if shorting, etc.
has occurred in the P.W.B.
pattern.
Check to see if the indoor fan is
No
touching the chassis, etc.
If it does, repair.