Daikin FTXZ25NV1B Operation Manual page 44

Troubleshooting (for service personnel)
The room does not cool down/warm up
Case
Air does not come out.
Air does not come out /
Air comes out.
Air comes out.
Air has an odour
Case
The air conditioner gives off an
odour.
Commonly occurring sounds
Case
Sound occurs during humidifying
operation.
Sound keeps coming out of the
indoor unit even after humidifying
operation is stopped.
Mist comes out
Case
Mist comes out of the indoor unit.
43
Description / where to check
„ In HEATING operation
• The air conditioner is warming up. Wait for about 1 to 4 minutes.
„ In COOLING / "SARARA" DRY / DRY COOLING operation
• When the airfl ow rate setting is "AUTO", a function to prevent emission of an odour
contained in the indoor unit operates. This keeps air from coming out immediately after
operation is started. Wait for about 40 seconds.
„ Is the airfl ow rate setting appropriate?
• Is the airfl ow rate setting low, such as "Indoor unit quiet" or "1"? Increase the airfl ow rate
setting.
„ Is the set temperature appropriate?
„ Is the adjustment of the airfl ow direction appropriate?
• Is there any furniture directly under or beside the indoor unit?
• Is the air conditioner in ECONO operation?
• Are the air fi lters dirty?
• Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit?
• Is the window or door open?
• Is the exhaust fan turning?
• Are the ventilating operation and air conditioning operation used at the same time?
Description / where to check
• The air conditioner may take in an odour from outside. Stop humidifying operation and
remove the cause of the odour.
• When operation is switched to "SARARA" DRY operation, the humidity may increase
temporarily, which may generate an odour.
• The room odour absorbed in the unit is discharged with the airfl ow.
We recommend you to have the indoor unit cleaned. Consult the service shop.
• The air outlet may give out an odour because a small amount of ozone is generated.
However, the amount is very small and does not harm your health.
• This happens when the unit is in MOLD PROOF operation.
Description / where to check
„ Operating sound is loud
• In HUMID HEATING operation, the humidifying unit starts operating and therefore
generates a slightly louder sound in the room. This sound is generated by the humidifying
operation which becomes louder with increases in the airfl ow rate.
• In ventilating operation, fresh air is taken in from outside. This may cause outside noise
to sound loud. Operating sound becomes slightly louder as well.
„ Operating sound changes
• This happens when the humidifying fan starts or stops operating.
• Outside sound may be loud.
• To protect the air conditioner, the humidifying fan keeps turning for about another
3 minutes after operation is stopped.
Description / where to check
• This happens when the air in the room is cooled into mist by the cold airfl ow during
COOLING or other operation.
• This is because the air in the room is cooled by the heat exchanger and becomes mist
during defrost operation.
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