Brand: FUJITSU
Category: Air Conditioners
Document Type: Manual
Language: EN
Manual for ARTG30LHTA
Uploaded: Nov. 21, 2025, 6:39 p.m.
Warranty Information
Refer to the installation manual for warranty details.
Basic Operation
Starting the Operation: Press the On/Off button to start or stop the unit. The power indicator will light up when the unit is on.
Operation Mode Setting: Select 'Mode' on the Monitor screen and choose your desired mode (Auto, Cool, Dry, Fan, Heat) using the cursor buttons.
Temperature Adjustment: Select 'Set temp.' on the Monitor screen and adjust the desired temperature using the cursor buttons.
Fan Speed Setting: Select 'Fan' on the Monitor screen and adjust the fan speed (Auto, High, Medium, Low) using the cursor buttons.
Function Settings
Access 'Function' from the Menu to adjust settings like 'Economy', 'Set temp. auto return', and 'Set temp. range limitation'.
Timer Settings
Access 'Timer' from the Menu to set 'On timer', 'Off timer', 'Weekly timer', and 'Auto-off timer'.
Troubleshooting and error codes
| Symptom | Items to check | See Page |
|---|---|---|
| Noise is heard: | During operation and immediately after stopping the unit, the sound of water flowing in the air conditioner's piping may be heard. Also, noise may be particularly noticeable for about 2 to 3 minutes after starting operation (sound of coolant flowing). * During heating operation, a sizzling sound may be heard occasionally. This sound is produced by the automatic defrosting operation. |
- |
| Smells: | Some smell may be emitted from the indoor unit. This smell is the result of room smells (furniture, tobacco, etc.) which have been taken into the air conditioner. | - |
| Mist or steam are emitted: | During cooling or dry operation, a thin mist may be seen emitted from the indoor unit. This results from the sudden cooling of room air by the air emitted from the air conditioner, resulting in condensation and misting. * During heating operation, the outdoor unit's fan may stop, and steam may be seen rising from the unit. This is due to the automatic defrosting operation. |
39 |
| Airflow is weak or stops: | * When heating operation is started, fan speed is temporarily very low, to allow internal parts to warm up. * During heating operation, if the room temperature rises above the thermostat setting, the outdoor unit will stop, and the indoor unit will operate at very low fan speed. If you wish to warm the room further, set the thermostat to a higher setting. * During heating operation, the unit will temporarily stop operation (maximum 15 minutes) as the automatic defrosting mode operates. During the automatic defrosting operation, will be shown on the remote controller display. * The fan may operate at very low speed during dry operation or when the unit is monitoring the room's temperature. * In the monitor AUTO operation, the fan will operate at very low speed. |
39 |
| Water is produced from the outdoor unit: | * During heating operation, water may be produced from the outdoor unit due to the automatic defrosting operation. | 39 |
| The FILTER indicator blinks: | Clean the filter. Afterwards, turn the FILTER indicator off. | 28 |
| thermo sensor display on the remote controller is flashing: | The room temperature sensor may be malfunctioning. Please consult authorized service personnel. | - |
| Airflow is stopped and displayed on the icon display of the "Monitor" screen: | Airflow is stopped due to the automatic defrosting, oil recovery, or mode mismatch. Refer to the operating manual of the relevant indoor unit. | - |
| Order of timer patterns from [Time 1] to [Time 8] in [Weekly timer setting] is different from what you registered: | If more than 2 timer patterns per a day are registered in [Weekly timer setting] and they are not in proper time order, those patterns are sorted automatically in time order when you finalize the [Weekly timer setting]. (Sorting function) | 39 |