The T18IF800SP is the 800-generation ancestor of the current T18IF905SP: the same 18-inch width and flush Freedom hinge, 8.6 cubic feet, and an internal ice maker instead of a door dispenser. Its use and care guide is one of the few Thermador refrigeration documents that describes a built-in self-test, and it tells owners to run it before calling for service.
When the test finds a problem, the ALARM symbol lights with a message naming the part, a sensor for example. That message is worth writing down. The same guide gives 25-120 psi as the water pressure range for the ice maker, which explains many small-cube complaints in homes with weak supply or a reverse-osmosis system.
Key Features
- 18-inch panel-ready freezer column with internal ice maker, reversible door
- 8.6 cu. ft. gross, 3 metal shelves, 5 door bins
- SuperFreeze and Energy Saving (Economy) mode at 3 F
- Self-test mode run from the SETUP and ALARM OFF buttons
Most Common Issues on This Model
Temperature alarm (flashing temperature with ALARM symbol) after outages
Small or hollow cubes from low water pressure or an old filter
Frost on the rear panel pointing to a defrost problem
Door alarm sounding because the door is not closing fully

