About your service visit
A recent change is useful context.
If the problem began after moving the appliance, an interruption in power or earlier service work, mention it. The timing does not prove a cause, but it helps the technician understand the history. Let us know which functions were working normally before the change.
Prepare access to the appliance and provide model information if it is readily available. In a managed property, establish who can admit the technician and discuss the proposed repair. If several appliances are affected, list them while scheduling so the scope is clear.
Watertown visits require an address check; building access arrangements can be discussed on the same call. Appointments are coordinated from Waltham.