Fujitsu AB A45TATA Series Betriebshandbuch - Seite 11

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TROUBLESHOOTING

Instructions relating to heating (*) are applicable only to "HEAT & COOL MODEL" (Reverse Cycle).

Instructions relating to "the TIMER indicator lamp" (**) are applicable to "CEILING SUSPENSION TYPE" and "FLOOR CON-

SOLE/UNDER CEILING DUAL TYPE".

Symptom

CHECK ONCE

Doesn't operate at all:

Poor Cooling (or *Heating)

performance:

If the problem persists after performing these checks, or if you notice burning smells, ** or the TIMER indicator lamp flashes,

stop operation immediately, turn off the electrical breaker, and consult with authorized service personnel.

OPERATING TIPS

Instructions relating to heating (*) are applicable only to "HEAT & COOL MODEL" (Reverse Cycle).

Instructions relating to "the OPERATION indicator lamp" (**) are applicable to "CEILING SUSPENSION TYPE" and "FLOOR

CONSOLE/UNDER CEILING DUAL TYPE".

Operation and Performance

*Heating Performance

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

absorbing heat from outdoor air and transferring that heat

indoors. As a result, the operating performance is reduced

as outdoor air temperature drops. If you feel that insuffi-

cient heating performance is being produced, we recom-

mend 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 there been a power failure?

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

G Is the main power switch set to the OFF position?

G Is the timer operating?

G Is the air filter dirty?

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

G Did you adjust the room temperature settings (thermostat) cor-

rectly?

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?

*Microcomputer-controlled Automatic Defrosting

When using the Heating mode under conditions of low out-

door 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

unit 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 4 to 15 minutes).

During Automatic Defrosting operation,

played on the remote controller, ** and the OPERATION in-

dicator lamp (red) will flash.

Low Ambient Cooling

When the outdoor temperature drops, the outdoor unit's fans

may switch to Low Speed, or one of the fans may stop inter-

mittently.

See Page

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