Frequently Asked Questions

General

• What is meant by the terms COP and EER?
• Can air conditioning make you ill
• Cold draughts
• The refrigerant cycle: what is it?
• What about legionella
• What are the influences on the capacity need
• What is heat transfer?
• What is inverter technology?
• What is sound pressure/sound power?
• What is the difference between sensible and latent heat?
• What is a heat pump?
• What are allergens?
• What is catechin?

Unit operation questions

• After the power switch is turned on, the air outlet flaps operate.
• In the microcomputer-controlled dry mode, the indoor unit fan operates at L for one minute when the outdoor unit (compressor) is not operating.
• The air conditioner does not blow air immediately after it starts operation in the heating mode.
• The air conditioner does not start operation immediately after it is turned on.
• The air conditioner produces a water flowing sound.
• The air conditioner produces an air releasing sound.
• The air conditioner stops operation (Operation lamp remains lit).
• The air conditioning produces a crackling sound.
• The air flow suddenly becomes stronger during a heating operation.
• The air outlet flaps do not operate at the same time in the master and slave indoor units of a simultaneous operation multi-unit.
• The air outlet flaps sometimes operate during a cooling operation.
• The drain pump continues operating after a cooling operation stops.
• The indoor unit fan operates after a heating operation stops (in an air conditioner equipped with a heater).
• The outdoor unit discharges water or steam.
• When the air outlet swing function is set to ON, the flaps remain at a horizontal position.

First aid

• The air conditioner does not cool or warm the room.
• The air conditioner does not operate (Operation lamp is not lit).
• The air conditioner operates abnormally.
• The air conditioner stops in the middle of operation (ON timer in operation).
• The air conditioner stops operating (Operation lamp blinks).
• The amount of drained water is large (as compared to the amount discharged in the previous year or the day before).
• The indoor unit produces a mist.
• The remote control thermostat cannot be set.
• When the operation mode is changed, the air outlet flap position also changes.