A VRF combines many indoor units on one refrigerant circuit. A clogged filter on one indoor unit affects not just that room but the balance of the whole system. That is why maintenance should follow a calendar, not a breakdown.
How often?
- General maintenance: typically twice a year, before the cooling and heating seasons.
- Filter cleaning: more often, depending on dust and runtime. Stores, restaurants and busy offices may need monthly checks.
- Leak checks: systems holding 5 t CO₂e or more of refrigerant are checked at the intervals required by the Turkish F-gas regulation, with records kept.
Calculate your system’s CO₂ equivalent with the refrigerant tool: charge (kg) × GWP / 1000.
What’s done at a visit?
Indoor unit
- Filters cleaned or replaced
- Coil cleaned
- Drain pan, line and pump (if fitted) checked
- Fan, motor and vibration checks
Outdoor unit
- Coil cleaned, airflow obstructions removed
- Fans and electrical connections checked
- Mounting, anti-vibration pads and corrosion checked
System
- Pressures and temperatures read with a service tool
- Fault code history reviewed
- Controller and communication bus checked
- Leak check and record on systems in scope
Signs maintenance is due
- Rooms take longer than before to reach setpoint.
- An indoor unit drips water or smells.
- The outdoor unit starts and stops often, or sounds different.
- A fault code appears on the controller.
- Electricity use rises at the same usage.
Calendar-based vs data-driven
Calendar maintenance treats every unit the same. On a monitored system, the team knows in advance which unit needs what: units raising fault codes, tripping protection or slow to reach setpoint come first. See predictive maintenance.
For a maintenance request use the form or call Klimanist.