Romstal Solar 24s Instrukcia

| Error Code | Meaning | What to Do | |------------|---------|-------------| | | Sensor 1 (Collector) short circuit or disconnected | Check wiring at S1 terminals. Measure resistance: Pt1000 = 1000Ω at 0°C. Replace sensor. | | E2 | Sensor 2 (Tank) short circuit or open | Same as E1 for tank sensor. | | E3 | Pump relay stuck or overload | Disconnect pump. If error disappears, pump is faulty. Check relay with multimeter. | | E4 | Collector temperature > P04 limit | System is in stagnation. Normal on sunny days. Pump stops until collector cools. | | E5 | Tank temperature > P03 limit | Overheating protection. Check mixing valve or dump heat. | | -- | No sensor reading | Sensor not connected or incompatible type. Check P08 setting. |

The Romstal Solar 24s uses two sensors: