BeeWarm editorial: manufacturer-grounded research prepared with AI assistance. No personal product test, customer installation or manufacturer affiliation is claimed.
A dated notice, a specific model
Bosch’s December 2023 product information notice BTC 748004305 A includes the Greentherm T9900SE 199, material number 7-736-503-731, among specified Greentherm 9000 indoor models. Its subject is clogged-burner maintenance in certain high-cycle applications. This is a manufacturer notice to discuss with a professional, not a diagnosis of a particular home or a statement that every T9900SE 199 has a defect.
The production record matters
The notice distinguishes production periods and filter arrangements, including a pleated-filter production change beginning June 2023, FD 374. It describes different support routes for earlier equipment. Preserve a safely visible serial-label photograph and the paperwork for any previous filter or burner work. Let the qualified service provider and Bosch confirm applicability and current support terms; this article does not promise free parts, replacement or warranty coverage.
Report the display without assigning the cause
Bosch lists C1, C2, CE and CF as potential clogged-burner codes in this notice. If a message has already appeared, record it exactly with the time and circumstances. That list does not establish the fault in your installation, and absence of a listed message does not certify safe operation. Do not enter hidden menus or repeatedly restart equipment to reproduce a fault.
Keep the job at professional scope
No burner cleaning, cover removal, filter conversion, combustion adjustment or gas work is described here. Bring the exact model and serial information, the observed message, service history and any change in usage to the assessment. The notice’s technical procedures belong with the qualified service provider using the applicable installation manual.
Prepare the BeeWarm conversation
Tell Robert your Lower Mainland city, access arrangements and whether the unit serves a single home or a higher-use setting. Ask whether BeeWarm can accept the specific appliance and scope, and whether manufacturer technical support needs to be involved. A useful enquiry asks for the next verified step rather than naming a replacement part in advance.
Manufacturer references
Manufacturer sources checked 2026-11-10. Match the exact installed version and applicable Canadian documentation. This article prepares a professional enquiry and contains no installation or internal repair procedure.
Prepare an enquiry for Robert · Call 604-765-8424. Availability and accepted scope require direct confirmation.