The short answer
On the TMF family a cabinet that runs but will not cool is far more often a stalled defrost and blocked airflow than a failed compressor. The evaporator ices over, the air stops moving, and the cabinet warms while every part of the machine appears to be working.
What you observe on these models
- The cabinet is warm while the compressor is clearly running — The hum and the vibration are there, the air inside is not cold, and nothing on the panel says anything is wrong.
- The freezer side holds while the fresh-food side does not — On a cabinet with one evaporator this is an airflow story, not a refrigerant one, and it narrows the search immediately.
- Food at the back is frozen and food at the front is warm — Cold air is arriving but not circulating, which points at the fan and the duct rather than at the sealed system.
- NEAR MISS - the cabinet is silent and nothing is cold — No hum at all is a power, start-relay or control fault, and that belongs on a different page than this one.
Causes, most likely first on this family
- Iced evaporator from a stalled defrost — First on this family. The owner notices the warmth long before anyone notices the frost, and because the family is one cabinet in several finishes, what is true of one model here is true of the rest.
- Evaporator fan not moving the air — Second. The fan sits behind the rear panel of the cold compartment and is the part that wears in this position.
- Door gasket leaking warm, humid air in — Third, and the reason the ice formed in the first place on a good many of these.
- Sealed system or compressor — Last, and deliberately so: it is the least common of the four on this family and the only one that is not an owner fix.
Check in this order, and why this family dictates it
- Listen at the cold compartment with the door held open and the switch pressed — The fan should run. This single check separates the first two causes before any panel comes off.
- Look at the rear panel of the cold compartment for a frost sheet — A sheet rather than a light dusting confirms the airflow story and tells you the defrost side is the fault.
- Close the door on a sheet of paper at several points around the seal — Done third because it explains the ice rather than replacing the diagnosis, and it is the cheapest thing on the list to put right.
- Feel the condenser and the side walls for heat — Only worth doing once the three above are clean; warmth here says the system is still pumping and pushes the sealed-system cause further down, not up.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off, and the compressor circuit on a cabinet this size is live at the relay even when the machine looks idle. If the cabinet has been off for a while, remember that a refrigerator holds food safely at 40 degrees F (4 degrees C) or below, and food above that for hours should be discarded rather than re-chilled.
Models in the TMF family
Reference| Model number | Family key |
|---|---|
| TMF101TABSS | appliance-basics:refrigerator:tmf |
| TMF18TAB/BLK | appliance-basics:refrigerator:tmf |
| TMF18TAB/SS | appliance-basics:refrigerator:tmf |
| TMF18TAB/WH | appliance-basics:refrigerator:tmf |
| TMF18TABC/** | appliance-basics:refrigerator:tmf |
When to call a technician
Call once the owner-side checks are clean: door and seal, load, clearance, condenser, and a fan you can hear. Call straight away if the cabinet has been running continuously for days, if the compressor is too hot to keep a hand on, if there is oil anywhere around the tubing, or if a breaker trips when the machine starts.
Other faults covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
