Fujitsu General, Ltd. • Kawasaki • Founded 1936
Installation and repair of Fujitsu air conditioning in Madrid
Officially trained Fujitsu technicians for the entire residential and commercial range: Airflow, Kë, Nordic, and VRF Airstage systems. Diagnosis with own equipment, spare parts in stock, and preventive maintenance.
Why do many installers in Madrid choose Fujitsu?
Fujitsu General does not have the brand recognition that Daikin or Mitsubishi have, but it is well known in the installation sector. Three reasons we constantly hear: (1) the airflow management is superior in the Airflow—the grille design diffuses the air more evenly than the competition and prevents direct drafts; (2) the price/efficiency ratio from the Kë range is difficult to match; and (3) the heating performance in intense cold from the Nordic range is better than most manufacturers, key in communities with harsh winters where Daikin and Mitsubishi also compete.
💡 Direct response
Fujitsu General, Ltd. es la filial de climatización del grupo Fujitsu, con sede en Kawasaki (Japón) y fábricas en Japón, China y Tailandia. Opera de forma independiente de la división informática del grupo. En España su presencia se consolidó a partir del año 2000 con la gama ASY/ASYG y hoy es la tercera o cuarta marca más instalada en Madrid en el segmento residencial. Sus modelos tecnológicamente más avanzados —Airflow y Kë— usan tecnología di ganada en el mercado japonés de alta eficiencia energética, donde conviven con las temperaturas más exigentes del hemisferio norte.
How to read Fujitsu models: quick guide
The Fujitsu nomenclature confuses many customers. The key is in the first three letters:
- ASYG = wall-mounted inverter indoor unit (the most common type)
- ASHG = high-end wall-mounted inverter indoor unit (Design, horizontal louvre)
- AOYG = outdoor unit corresponding to ASYG models
- AOYH = high-efficiency outdoor unit (Nordic, heating down to ‑25 °C)
The following number indicates the approximate power in BTU: 09 = 9,000 BTU (2.5 kW), 12 = 12,000 BTU (3.5 kW), 18 = 18,000 BTU (5 kW), etc.
Residential wall-mounted range
- Airflow (ASYG‑KMTA) — The most installed range in Madrid since 2018. Dual airflow system: cold air is distributed horizontally without creating a direct draft on people. A++, quiet (19 dB at minimum). The model we see most in new build apartments between 2019 and 2024. Does not include WiFi as standard but accepts the UTY‑TFSXF2 module.
- Kë (ASYG‑KGTA) — The star of the current range. A++, integrated WiFi, intelligent control by reference temperature and activity. 19 dB in ultra-silent mode. The difference with the Airflow is that the Kë includes WiFi as standard and has a wider operating temperature range in heating.
- Design (ASHG‑KMTA) — Ultra-thin horizontal body, wall grille with bottom outlet. For installations where aesthetics are critical or the ceiling is low. Integrated WiFi.
- Nordic (ASYG‑LLCE / ASYG‑LMCA) — Designed for harsh climates. Efficient heating down to ‑25 °C (COP of 1.8 even at ‑20 °C). In Madrid, it is not necessary for standard use, but customers in high mountain areas or with poorly insulated houses specifically request it.
- Compact (ASYG‑LECA) — Entry-level range, without WiFi, A+. For secondary rooms or second homes where budget is a priority.
Commercial multi-split and VRF
- Multi Room (AOYG‑LAT) — Up to 4 indoor zones with one outdoor unit. Widely used in communities in Madrid where regulations limit the number of units on the facade.
- Airstage V‑II (AJYG) — VRF system for buildings. Less implemented than Daikin VRV or Mitsubishi City Multi in the tertiary sector in Madrid, but with a good proposal for medium-sized installations.
What customers ask us the most about Fujitsu equipment
The ASYG12LLCC was one of the best-selling models in Spain between 2014 and 2018. At 10 years old, it is in the middle range of its lifespan. If the compressor is working and the fault is a PCB, motor, or thermistor, the repair makes economic sense. It uses R-410A, whose availability is decreasing but is still legal and accessible for refill. If the compressor has failed or there is a significant leak in the circuit, the balance between repair cost and the price of a new unit begins to become unbalanced.
They share the platform and the base compressor, but they are not identical. The Kë (ASYG‑KGTA) has the PCB with integrated WiFi management, the additional presence sensor, and the adaptive temperature control that adjusts the setpoint according to the estimated activity. The Airflow (ASYG‑KMTA) is the version without native WiFi and with less control logic. This means that the PCBs are different and they are not interchangeable, although most of the other mechanical components and the refrigeration circuit are.
The absence of a fault code with low performance in cold conditions almost always points to one of these four causes: (1) blocked filters—check them yourself first; (2) low gas charge (the equipment continues to operate but is underpowered—requires a technician to measure pressures); (3) dirty indoor evaporator what prevents proper heat exchange—requires professional cleaning; (4) Deteriorated external fan that it does not expel heat sufficiently. Most of these causes can be resolved during a visit.
No different installation is required compared to any standard split. The difference with the Nordic lies in the control algorithm and the outdoor heat exchanger, which is sized for lower temperatures. In Madrid, the outdoor temperature in winter rarely drops below -7 °C, which is within the range of all modern inverter splits. The Nordic provides an advantage especially in mountainous areas or in homes with north exposure without insulation.
Internal filters: clean every 2-3 weeks during intensive use (the user can do this with the appliance's own extractor, rinsing with lukewarm water and allowing to dry). Complete technical maintenance: once a year, including cleaning of the evaporator and condenser, checking the drainage, measuring pressures, and electrical verification. RITE equipment (commercial and community premises) requires documented maintenance more frequently.
Fault reference and Fujitsu fault codes
Fujitsu uses the format E:XX for internal errors and loose letters for protection states. The code appears on the control board display or in the blinking of the operation LED. The most common ones in the installed units in Madrid:
| Code | Probable cause | Recommended action |
|---|---|---|
| E:01 | Indoor fan motor (Hall sensor) | Measure the motor winding resistance; replace if faulty. |
| E:03 | Evaporator temperature sensor | Check if the thermistor is detached from the pipe. If not, replace it. |
| E:04 | Indoor temperature sensor | Measure the resistance of the NTC sensor. If it is out of range, replace it (inexpensive part). |
| E:08 | Internal-external communication error. | Check the continuity of the communication cable between units. Inspect the terminal blocks. |
| E:10 | Outdoor temperature sensor | Defective outdoor ambient thermistor; replace in outdoor unit |
| E:15 | Discharge temperature sensor | Compressor discharge thermistor; check position and resistance |
| AA | Address conflict | Configuration error in multi-split: assign unique addresses to each unit |
| OP | Operation shutdown (protection) | High pressure or excessive temperature; check filters and condenser ventilation |
Fujitsu spare parts: stock and location within 24 hours
We have stock for the most common models (ASYG‑KMTA, ASYG‑LLCC, ASHG‑KMTA) and can source any part from the Fujitsu catalogue within a maximum of 48 hours:
- Interior and exterior PCBs (by exact model reference)
- Indoor fan motors (DC inverter and AC)
- Ambient, evaporator, and discharge NTC thermistors
- WiFi Module UTY‑TFSXF2 for enhanced connectivity
- Drain pumps and hoses
- Fans and outdoor condenser motors
Fault, installation or maintenance of Fujitsu in Madrid
Communicate the model as it appears on the strip of the indoor unit (starts with ASY or ASYG). With that, we have the exact reference and can find the part before the visit.