After research by SSH, Stedin and Klimaatgarant, the problem appears to be in the heat-cold storage system: the WKO installation. A spokesperson for the SSH confirmed this. “The meter cupboard of the SSH has been examined, the main fuse has been checked by Stedin and the WKO installation by Klimaatgarant. This was the most logical order in this situation,” a spokesperson said. “If no error is found in part A, the report will indeed be forwarded to the owner of part B.”