About Systemair fan coils
Origin: Sweden (Systemair AB). In Türkiye: Via Systemair Türkiye.
Systemair fan coil series we service
- SysCoil 2 (SHN concealed ceiling, SHC ceiling)
- Serena K (cassette)
Unit types
Service highlights
- Control of multiple units from one controller (master/slave)
- Built-in condensate pump on the Serena K
Our services for Systemair fan coils
Systemair fan coil maintenance
Checks of filters, coil, drain pan, drainage, fan, valves and thermostat; documented periodic maintenance.
Systemair fan coil faults and repair
On-site repair of water leaks, no cooling, fans not turning, valve and controller faults.
Cleaning and filters
Chemical coil washing, drain pan disinfection, filters cut to size.
Systemair fan coil spare parts
Supply and fitting of compatible motors, valves, thermostats, pumps and other parts.
Systemair fan coil error codes
Most Systemair fan coils run on a 3-speed motor and a simple room thermostat; the manufacturer has not published an error code list for these units. Faults are diagnosed from symptoms and measurements. In projects using an electronic controller or networked thermostat, the codes depend on the controller's own brand.
| Symptom | Possible cause | Details |
|---|---|---|
| Water leaking | Blocked drain, overflowing or cracked drain pan, sweating valve | Fix |
| Cassette condensate pump alarm | Float switch or pump fault, blocked drain | Pump |
| No cooling / no heating | Stuck motorized valve, air in the coil, dirty filter | Fix |
| Fan not turning | Capacitor, motor or speed control | Fix |
| Noise and vibration | Dirty or unbalanced fan wheel, bearing | Fix |
| EC motor driver fault | Power supply, control signal (0–10 V) or motor electronics | EC motor |
| Weak airflow (ducted type) | Dirty filter, duct connection, low fan speed | Cleaning |
Common thermostat warnings
Warnings shown on Siemens RDF series thermostats, which are often used with Systemair fan coils:
| Indication | Meaning | What to do |
|---|---|---|
| AL1 | External fault input X1 active (e.g. drain alarm) | Check the device connected to input X1. |
| AL2 | External fault input X2 active | Check the device connected to input X2. |
| FIL | Filter cleaning reminder | Clean the filter and reset the warning. |
| Dew (condensation) symbol | Condensation detected in the room, cooling stopped | Check humidity and water temperature. |
Is your Systemair fan coil showing a code?
Send a photo of the controller display and the unit's rating label and we will interpret it right away.
Systemair fan coil controllers and thermostats
On Systemair fan coils we replace faulty or outdated thermostats with new models suited to the unit's 2/4-pipe configuration, valve type and motor speeds: mechanical, digital, weekly programmable and Modbus / BACnet / KNX networked options. Thermostat options →
Systemair fan coil spare parts
Systemair fan coil motor
Compatible part supply and fitting
Systemair capacitor
Compatible part supply and fitting
Systemair fan wheel
Compatible part supply and fitting
Systemair motorized valve
Compatible part supply and fitting
Systemair actuator
Compatible part supply and fitting
Systemair thermostat
Compatible part supply and fitting
Full spare parts catalog (28 parts) →
Systemair fan coil service in Ankara
We service Systemair fan coils on-site in every district of Ankara. We prepare bulk maintenance plans for office towers, hospitals, hotels, schools, shopping malls and residential complexes. For Systemair units outside Ankara, we start with a pre-diagnosis from photos and videos, followed by a scheduled visit with the required parts.
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Trane fan coil serviceFrequently asked questions
Do you service Systemair fan coils on-site in Ankara?
Yes. Our base is in Etimesgut; we carry out on-site maintenance, fault repair and part replacement on Systemair fan coils in every district of Ankara. For Systemair units outside Ankara we provide scheduled service across Türkiye.
Are you the authorized Systemair service?
No. YOİ Mühendislik is an independent service holding the TSE Service Adequacy Certificate (HYB No: 12850); we service all brands, including Systemair, independently of the manufacturer. For units still under warranty, we recommend checking the manufacturer's terms first.
What does a Systemair fan coil error code mean?
Many Systemair fan coils are 3-speed units with a simple thermostat and have no published error code list. If you see a code on the display of a model with an electronic controller, send us a photo and we will interpret it based on the controller and board model.
Are Systemair fan coil spare parts available?
For parts such as motors, capacitors, motorized valves, actuators, thermostats, drain pans, condensate pumps, filters and fan wheels, we supply original parts that fit Systemair units or equivalents whose technical ratings match exactly. A photo of the rating label is enough.
How often should Systemair fan coils be serviced?
A full service at least twice a year, before the cooling and heating seasons; filter checks are recommended every 1–3 months depending on usage.