Question / Category | Different problem classes | Problem incidents | ||
---|---|---|---|---|
N | % | N | % | |
1. Causal component: Which component causes the problem? | ||||
 Heat pump (#HP) | 13 | 30% | 98 | 12% |
 Additional heater (#AH) | 2 | 5% | 24 | 3% |
 Heat distribution (#HD) | 11 | 25% | 159 | 19% |
 Hot water (#HW) | 12 | 27% | 254 | 31% |
 Heating control system (#HC) | 6 | 14% | 287 | 35% |
2. Temporal incidence: When does the problem occur? | ||||
 Since installation | 22 | 50% | 563 | 68% |
 Slowly over time | 15 | 34% | 227 | 28% |
 Abruptly / after system changes | 7 | 16% | 32 | 4% |
3. Components for recognition: Which component can be used to identify the problem? | ||||
 Heat pump | 9 | 20% | 74 | 9% |
 Additional heater | 1 | 2% | 57 | 7% |
 Heat distribution | 13 | 30% | 173 | 21% |
 Hot water | 8 | 18% | 158 | 19% |
 Heating control system | 13 | 30% | 360 | 44% |
4. Problem recogniser: Who can recognise the problem? | ||||
 Guided user | 22 | 50% | 373 | 45% |
 External expert | 22 | 50% | 449 | 55% |
5. Smart meter patterns: Do problems create patterns in smart meter data? | ||||
 Probably recognisable | 13 | 30% | 358 | 44% |
 Probably not recognisable | 31 | 70% | 464 | 56% |