1 Prepare for safe work
Switch off the system at the control panel and wait for the pipes and casing to cool. Record the temperature, pressure, and error code before changing settings.
⚠ Warning: Do not repair gas lines, electrical connections, the cooling circuit, and safety devices yourself. Only an authorized person is allowed to work on these parts.
2 Determine the exact symptom
Record weekly consumption, room temperatures, and occupancy schedule. Without initial measurement, it is difficult to estimate savings.
3 Check the most common cause
Reduce the set temperature gradually, set a night schedule, and do not block radiators. Ventilate briefly and intensely.
4 Eliminate the cause without improvisation
Seal uncontrolled air flows, service the system, and monitor consumption under similar weather conditions. Plan major interventions after an energy audit.

? Tip: Photograph the initial state and change only one thing at a time. This makes it easier to recognize what really solved the problem.
5 Assemble and test safely
Restore settings, turn on the system, and monitor one full cycle. For gas smell, smoke, leaks, overheating, or a repeated error, switch off the system immediately and call an authorized service center.