Operating Tips; Operation And Performance - Fujitsu ASTG09LVCA Operating Manual

TROUBLESHOOTING

Symptom

CHECK ONCE

Doesn't operate at all:

MORE

Poor Cooling (or Heating)

performance:

The unit operates

differently from the Remote

Controller's setting:

If the problem persists after performing these checks, or if you notice burning smells, or the OPERATION Indicator Lamp

(Fig. 3 5) and the TIMER Indicator Lamp (Fig. 3 6) flashes, immediately stop operation, turn off the electrical breaker and

consult authorized service personnel.

Heating Performance

G This air conditioner operates on the heat-pump principle,

absorbing heat from outdoor air and transferring that heat

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

reduced as outdoor air temperature drops. If you feel that

insufficient heating performance is being produced, we

recommend you use this air conditioner in conjunction

with another kind of heating appliance.

G Heat-pump air conditioners heat your entire room by

recirculating air throughout the room, with the result that

some time may be required after first starting the air con-

ditioner until the room is heated.

Items to check

G Has the circuit breaker been turn off?

G Has there been a power failure?

G Has a fuse blown out, or a circuit breaker been tripped?

G Is the timer operating?

G Is the Air Filter dirty?

G Air the air conditioner's intake grille or outlet port blocked?

G Did you adjust the room temperature settings (thermostat)

correctly?

G Is there a window or door open?

G In the case of Cooling operation, is a window allowing bright sun-

light to enter? (Close the curtains.)

G In the case of Cooling operation, are there heating apparatus and

computers inside the room, or are there too many people in the

room?

G Is the unit set for QUIET operation?

G Are the Remote Controller's batteries dead?

G Are the Remote Controller's batteries loaded properly?

Microcomputer-controlled Automatic Defrosting

G When using the Heating mode under conditions of low

outdoor temperature and high humidity, frost may form

on the outdoor unit, resulting in reduced operating

performance.

In order to prevent this kind of reduced performance, this

air conditioner is equipped with a Microcomputer-

controlled Automatic Defrosting function. If frost forms,

the air conditioner will temporarily stop, and the

defrosting circuit will operate briefly (for about 7-15 min-

utes).

During Automatic Defrosting operation, the OPERATION

Indicator Lamp will flash, and the DEFROST Indicator

Lamp will light.

G After heating operation stops, if frost forms on the out-

door unit, the unit will start Automatic Defrosting

operation. At this time, the outdoor unit will automati-

cally stop after operating for a few minutes.

(However, some type of multi-type air conditioner doesn't

provide this function.)

See Page

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8 - 9

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6

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