Freezer
Sub-Zero Freezer Stopped but the Refrigerator Still Works
In the owner's words
The ice cream went soft yesterday and today the peas are thawing, but the milk on the other side is still cold. The display lights up and the refrigerator hums along as if nothing happened.
Short answerA Sub-Zero freezer that quits while the refrigerator carries on is a pattern, not a mystery. Each side of a combination unit has its own refrigeration, so what we usually find is confined to the freezer: iced-over defrost parts, a stopped fan, less often its own sealed system. Sub-Zero Appliance Repair Seattle, (206) 339-4211, starts there.
Signed
- Technician
- Dean Halvorsen
- Bench time
- 19 years in the trade
- Title
- Refrigeration technician — sealed systems and airflow
- Carries
- EPA 608 certified
- Dated
- Evaporator fan
- Air opening
- Vent panel
Pattern Ledger
Freezer Dead, Fridge Fine: how it usually goes
- Most often Freezer evaporator iced over after a defrost part failed
-
Gives itself away by A solid white sheet on the back wall of the freezer, and a fan you can hear but barely feel
Price band Defrost heater, thermostat or sensor$260–$690
- Sometimes Freezer evaporator fan stopped or blocked
-
Gives itself away by The compressor hums, yet no draft comes from the freezer vents with the door closed
Price band Evaporator or condenser fan motor$330–$690
- Rarely Leak, restriction or tired compressor on the freezer's own system
-
Gives itself away by Air moving, coil clear of frost, and still no real cold at the freezer evaporator
Price band Compressor or sealed-system repair$1,410–$3,350
Telling these three apart is what the $89 visit is for. Sub-Zero Appliance Repair Seattle · (206) 339-4211
One cabinet, two machines
On the classic built-in combinations, side-by-sides and over-and-unders alike, each compartment has its own compressor, evaporator and fan; the 600-series service manual even gives each compressor its own fault code. A freezer column beside a refrigerator column is simply two appliances. Either way the working side is real information: it sends the search to parts only the freezer has.
What we usually find behind it
The freezer is the side with defrost parts: a heater that clears frost from its evaporator, a terminator that ends each defrost, a heated drain trough. When one of those stops working, frost builds until the fan cannot push air through the coil, and the freezer warms over a day or two while its compressor keeps running. Next on the list is the fan itself, stopped by a worn motor, a switch that no longer starts it, or something pushed against its cover. Less often the control board stops powering the freezer compressor, or its sealed system has a leak or restriction.
What you can check safely
- Look at the freezer set point on the control panel; on electronic controls the factory setting is 0°F, and a key brushed while cleaning is easy to miss.
- Open the freezer once and check that no package, bin or tray is holding the door or drawer off its seal, then close it firmly.
- Look at the back wall of the freezer: a thick, even sheet of frost rather than a light film is worth describing when you ring.
- Keep the freezer shut between checks and move what matters most to a cooler, since each opening lets out cold it cannot yet replace.
Owner checks end there. Sealed tubing, wiring behind the grille and anything held by screws belongs on a service call — Sub-Zero Appliance Repair Seattle, (206) 339-4211.
Questions owners ask about this
Is the food in the refrigerator side safe while the freezer is down?
Usually, yes. On a combination Sub-Zero the two compartments run separate refrigeration, so a freezer fault does not reach the fresh-food side. Keep an eye on it with a thermometer on the middle shelf, and treat it as normal while it holds its usual reading.
Will unplugging the Sub-Zero for a few hours fix the freezer?
It may bring the freezer back for a day or two if the evaporator had iced over, because the ice melts away. The fault that let it ice up is still there, and the melted evidence makes the diagnosis harder. Leave it running and ring Sub-Zero Appliance Repair Seattle on (206) 339-4211.
Is a freezer-only fault worth repairing on an older unit?
Usually. The common causes, a defrost part or a fan motor, sit in the lower bands of the ledger above, and the working refrigerator has already shown its own system is sound. A sealed-system fault in the freezer is the bigger decision, and Sub-Zero Appliance Repair Seattle, (206) 339-4211, prices it only after gauges confirm it.