Fujitsu ASTB30LDC - User Manual

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KEEP THIS OPERATION MANUAL

FOR FUTURE REFERENCE

FUJITSU GENERAL LIMITED

OPERATING MANUAL

P/N9315345196-01

Indoor Unit

ASTB30LDC

Outdoor Unit

AOTS30LDT

HEAT & COOL MODEL

(REVERSE CYCLE)

ROOM AIR CONDITIONER

WALL MOUNTED TYPE

R410A

REFRIGERANT

This Air Conditioner contains and operates

with refrigerant R410A and Polyol Ester oil.

THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED

BY QUALIFIED PERSONNEL.

Refer to Commonwealth, State, Territory and local legislation,

regulations, codes, installation & operation manuals, before

the installation, maintenance and/or service of this product.

08D023_9315345196_cover 2008.04.07, 16:071

Table of Contents

Questions and Answers:

S
shepardsarahAug 16, 2025
What to do if Fujitsu ASTB30LDC Air Conditioner has poor cooling performance?
- S
  Sabrina WalterAug 16, 2025
  If your Fujitsu Air Conditioner isn't cooling well, consider these potential causes: * Check if the air filter is dirty. * Make sure the air conditioner's intake grille or outlet port isn't blocked. * Verify that the room temperature settings (thermostat) are correctly adjusted. * Ensure no windows or doors are open. * If it's during cooling operation, close curtains to block bright sunlight. * Assess if there are excessive heat sources like heating apparatus, computers, or too many people in the room. * Check if the unit is set to SUPER QUIET operation.
S
stephaniesullivanAug 19, 2025
What to do if my Fujitsu Air Conditioner doesn’t operate at all?
- J
  jjonesAug 19, 2025
  If your Fujitsu Air Conditioner isn't operating, check the following: * Ensure the Power Supply Plug is properly connected to the outlet. * Check for any power failures in your area. * See if a fuse has blown out or a circuit breaker has been tripped. * Verify that the timer is not in operation.
D
Donald GriffinAug 22, 2025
Why is my Fujitsu ASTB30LDC airflow weak or stops?
- M
  Melody AndersonAug 22, 2025
  There are several reasons why the airflow of your Fujitsu Air Conditioner might be weak or stop: * When heating starts, the fan speed is temporarily very low to allow internal parts to warm up. * During heating, if the room temperature exceeds the thermostat setting, the outdoor unit will stop, and the indoor unit will operate at a very low fan speed. You can set the thermostat to a higher setting to continue warming the room. * The unit will temporarily stop during heating (for 7-15 minutes) for automatic defrosting. * The fan may operate at a very low speed during dry operation or when the unit is monitoring the room's temperature. * The fan will operate at a very low speed during SUPER QUIET operation. * In monitor AUTO operation, the fan will operate at a very low speed.
S
samuelwilliamsAug 25, 2025
Why is water produced from the outdoor unit of my Fujitsu Air Conditioner?
- G
  Gary PerryAug 26, 2025
  During heating operation, water may be produced from the outdoor unit of your Fujitsu Air Conditioner due to the automatic defrosting operation.
D
David BeckAug 28, 2025
Why does my Fujitsu Air Conditioner smell?
- A
  Alexander BerryAug 28, 2025
  A smell might be emitted from the indoor unit of your Fujitsu Air Conditioner because room smells (from furniture, tobacco, etc.) have been drawn into the unit.
F
Frank CraigAug 31, 2025
Why does my Fujitsu ASTB30LDC emit mist or steam?
- R
  Robert RiveraAug 31, 2025
  Your Fujitsu Air Conditioner may emit mist or steam due to: * During cooling or dry operation, a thin mist may appear as room air rapidly cools, causing condensation. * During heating, steam may rise from the outdoor unit when the fan stops for automatic defrosting.
L
Leslie LuceroSep 3, 2025
Why does my Fujitsu ASTB30LDC make noise?
- T
  Tony BlakeSep 3, 2025
  Your Fujitsu Air Conditioner might be making noise due to: * The sound of water flowing in the air conditioner’s piping during and immediately after operation. * The sound of coolant flowing, particularly noticeable for about 2 to 3 minutes after starting operation. * A sizzling sound during heating operation, which is normal and produced by the automatic defrosting operation.
A
Alyssa MillerSep 6, 2025
What to do if Fujitsu ASTB30LDC Air Conditioner doesn’t operate immediately?
- T
  Tracy CookSep 6, 2025
  Your Fujitsu Air Conditioner may not operate immediately because: * If the unit is stopped and then immediately started again, the compressor will not operate for about 3 minutes to prevent fuse blowouts. * If the Power Supply Plug is disconnected and then re-connected, the protection circuit will operate for about 3 minutes.
A
Aaron WallSep 9, 2025
What does it mean when the AIR CLEAN indicator lamp (orange) flashes quickly on my Fujitsu ASTB30LDC?
- M
  markblakeSep 9, 2025
  If the AIR CLEAN Indicator Lamp (orange) on your Fujitsu Air Conditioner begins to flash quickly, it means that after approximately 500 hours of Air Cleaning Mode use, the Air Cleaning function will stop. You should stop the system, remove the mains socket, and maintain the dust collecting unit's air filter.
H
Harold AlexanderSep 12, 2025
What to do when the AIR CLEAN indicator lamp (orange) slowly flashes on Fujitsu ASTB30LDC Air Conditioner?
- G
  Gary FrancisSep 12, 2025
  If the AIR CLEAN Indicator Lamp (orange) on your Fujitsu Air Conditioner begins to flash slowly, it means that after approximately 400 hours of Air Cleaning Mode use, you should stop the system, remove the mains socket, and carry out maintenance on the dust collecting unit's air filter.

Fujitsu ASTB30LDC Specifications

General

Cooling Capacity (BTU/hr)	30000
Heating Capacity (BTU/hr)	30000
HSPF	9
Refrigerant	R410A
Voltage	208/230V
Cooling Capacity	8.8 kW
Heating Capacity	8.8 kW
Noise Level (Outdoor)	55 dB
Weight (Indoor Unit)	15 kg
Dimensions (Outdoor Unit)	870 x 680 x 330 mm
Weight (Outdoor Unit)	52 kg

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