Unusual Sounds; Problems With Particular Parts Of The Machine - Hitachi BD-S5500 Operating Instructions Manual

Troubleshooting
The following sounds are a result of normal operations during washing and drying. They do not
indicate malfunctions.
Sound
Suction sound
Showering
Droning
During washing
operations
High-pitched
whirring
Bubbling
Showering and
bubbling
Humming
High-pitched
whirring
Showering
During drying
Droning
operations
Bubbling
Vacuum sound

Problems with particular parts of the machine

Check the following before requesting repairs.
Symptom
Water flowing
sound can be
heard when the
drum rotates.
Did you turn on the tap too far?
The water supply
noise is loud.
A beep is emitted
during drying Is the dry filter inserted securely?
operations.
86
(continued)

Unusual sounds

The circulation pump is taking in air.
This sound may be louder at certain points during operation.
A water shower is being sprayed during the wash or rinse cycle to reduce foaming.
The circulation pump is running.
The control board is being cooled.
The motors are running.
The drum gradually accelerates during the spin cycle. The sound will get louder as the
rotation speed increases.
The water and air inside the drain hose is mixing.
The <AUTO SELF CLEAN> operation is in progress during the rinse cycle.
The fan and motors are running.
The fan noise may be louder at certain points during drying operations.
Cooling water is being sprayed for dehumidified drying.
The control board is being cooled.
The air released from the drain hose is mixing with the water inside the hose.
The dry filter is clogged, and the pressure inside the drum is changing.
Depending on the operating conditions, the amount of air that passes through the drain
hose increases, creating a louder sound.
Possible cause
This is the sound of the water inside the 4-Ply
Liquid Load Balancer used for balancing
during the spin cycle.
This does not mean that there is leftover water
in the drum.
If the water pressure is high, the water supply
noise will be louder.
Source of sound
Solution
This is not a malfunction.
If this is a concern, turn off the tap slightly.
Insert the dry filter securely. (P. 78, 79)