| bit / Error number | code | Errflags2 | description |
|---|---|---|---|
| 0 | E6 | Outlet temperature sensor below 5 °C | |
| 1 | E2 | Communication error or invalid configuration | |
| 2 | E1 | No communication with unit | |
| 3 | E7 | Fan error(air speed sensor) | |
| 4 | E3 | Fan error (ptc sensor) | |
| 5 | E5 | Relay electric heating remains on | |
| 6 | E4 | Relay electric heating remains off | |
| 7 | F2 | Warm water valve remains open | |
| 8 | F3 | Warm water valve remains closed | |
| 9 | F5 | outlet temperature sensor error | |
| 10 | F6 | inlet temperature sensor error | |
| 11 | F4 | control panel temperature sensor error | |
| 12 | F8 | Air speed sensor error | |
| 13 | F1 | Air valve does not reach end position | |
| 14 | F2 | Cold water valve remains open | |
| 15 | F3 | Cold water valve remains closed | |
| 16 | - | 1 | Filter dirty |
| 17 | - | 2 | no power |
| 18 | - | 4 | Battery outdoor sensor low |
| 19 | - | 8 | Battery indoor sensor low |
| 20 | F7 | 16 | Outdoor Sensor fail |
| 21 | F11 | 32 | Contact Sensor fail |
| 22 | F9 | 64 | Outdoor RF fail |
| 23 | F10 | 128 | Indoor RF fail |
| 24 | - | 256 | Filter dirt test |