General Information On Operation - Fujitsu ASTG18KMCB Operating Manual

Automatic defrosting operation

When outdoor temperature is very low with high humidity, frost

may form on the outdoor unit during the heating operation, and

it could reduce the operating performance of the product.

For frost protection, a microcomputer-controlled automatic

defrost function is equipped in this air conditioner.

If frost forms, the air conditioner will temporarily stop, and

defrost circuit will operate briefl y (maximum of 15 minutes.)

OPERATION indicator on the indoor unit blinks during this

operation.

If frost forms on the outdoor unit after the heating operation, the

outdoor unit will stop automatically after it operates for a few

minutes. Then the automatic defrosting operation starts.

Auto-restart function

In event of power interruption such as a blackout, the air

conditioner stops once. But it restarts automatically and

performs previous operation when the power supply is resumed.

If any power interruption occurs after the timer is set, counting

down of the timer will be reset.

After the power supply is resumed, the TIMER indicator on the

indoor unit blinks to notify you that there has been a timer fault.

In such a case, reset the timer for your opportune time.

Malfunctions caused by other electrical devices:

Use of other electrical appliances such as an electric shaver or

nearby use of a wireless radio transmitter may cause the malfunction

of the air conditioner.

If you encounter such a malfunction, turn off the circuit breaker once.

Then turn it on again, and resume operation by using the remote

controller.

Temperature and Humidity Range

Permissible ranges of temperature and humidity are as follows:

COOL/DRY

HEAT

If the unit is used under higher temperature conditions than those noted here, the automatic protection circuit may operate, interrupting the operation.

If the unit is used under lower temperature conditions than those noted here, the heat exchanger may freeze, causing water leakage or other mal-

function.

● Do not use the air conditioner for any purpose other than room cooling/dry, room heating or fan.

Indoor temperature

Indoor humidity

Indoor temperature

AIR CONDITIONER Wall Mounted Type

Heating performance

This air conditioner operates on the heat-pump principle,

absorbing heat from air outdoors and transferring that heat

to the indoor unit. As a result, the operating performance is

reduced as outdoor air temperature drops. If you feel that the

heating performance is insuffi cient, we recommend you to use

this air conditioner in conjunction with other kinds of heating

appliance.

About 18 °C to 32 °C

Below approximately 80%.

If the air conditioner is used continuously for many

hours, water may condense on the surface and drip.

About 16 °C to 30 °C

OPERATING MANUAL

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