The job: a Bosch B21CT80SNS French-door refrigerator
Last updated:
Case Study · Bosch Refrigerator Not Cooling · Lake Forest Park, WA
Bosch refrigerator not cooling in Lake Forest Park: a freezer coil packed in ice.
This Bosch refrigerator in Lake Forest Park wasn’t cooling: a 7-year-old Bosch B21CT80SNS French-door model. The freezer couldn’t keep ice cream solid, the ice maker had stopped, and the fan was loud. Behind the freezer panel the evaporator coil was packed in ice: the defrost system had stopped working. We replaced the failed defrost sensor. Real photos from the job below.
- Location: Lake Forest Park, WA
- Bosch B21CT80SNS/01 French-door refrigerator, about 7 years old
- Symptoms: freezer too warm, ice maker not working, loud fan noise
- Found: evaporator coil iced over, defrost system not working
- Repair: defrost sensor replaced, defrost cycle run, normal operation confirmed
- Diagnosed & repaired by Max, owner-technician
Licensed & Insured
90-Day Warranty
Owner-Operated
What happened
From a Bosch refrigerator not cooling to one that holds temperature
The complaint
The homeowner’s Bosch B21CT80SNS is about 7 years old. Three things had gone wrong at once: the freezer couldn’t keep ice cream solid, the ice maker had stopped making ice, and the fan behind the freezer was loud.
The diagnosis
With the freezer’s back panel off, the evaporator coil was packed in ice from top to bottom. A frost-free refrigerator is supposed to melt that frost off on a regular defrost cycle, so this much ice meant the defrost system wasn’t working. The failed part was the defrost sensor.
The fix
We replaced the defrost sensor, ran a defrost cycle to clear the coil, and confirmed the refrigerator was operating normally before we left. The repair carries our 90-day parts and labor warranty.
Real photos
This job, start to finish
Back panel off: the evaporator coil packed in ice
Close-up: ice built up between the fins and over the top of the coil
The old and new defrost sensors side by side
Ice cleared, defrost wiring reconnected at the coil
The evaporator coil clear of ice after the repair
Rating plate: model B21CT80SNS/01, FD 9801
Why choose us
Why Lake Forest Park homeowners call Ace Appliance Service for refrigerator repair
We find the cause, not just the ice
Melting the ice makes a fridge cold again for a few days. Finding the defrost part that failed is what keeps the ice from coming back.
One technician, start to finish
The same owner-technician diagnoses the problem, orders the part, and comes back to install it. No call center and no subcontractors.
90-day parts & labor warranty
WA Contractor #ACEAPAS774K6. We’re an independent Bosch repair provider, and this repair is backed by our 90-day parts and labor warranty. See our Bosch repair page for more.
Questions
Bosch refrigerator not cooling in Lake Forest Park: FAQ
Do you repair Bosch refrigerators that aren’t cooling in Lake Forest Park?
Yes — this case study is a Bosch refrigerator that wasn’t cooling in a Lake Forest Park home. We serve Lake Forest Park, Shoreline, Kenmore, Bothell, Seattle, and the rest of King and Snohomish County.
Are you a Bosch authorized service provider?
No. Ace Appliance Service is an independent repair company, not a Bosch factory-authorized servicer. If your Bosch is still under its factory warranty, contact Bosch first. Outside that warranty, we diagnose and repair it ourselves, and our work carries a 90-day parts and labor warranty. See our Bosch repair page.
How much does it cost to fix a Bosch refrigerator that isn’t defrosting?
It depends on which part of the defrost system has failed. We diagnose the exact cause on-site first, then give a clear price before any repair begins.
Are you licensed and insured?
Yes, Ace Appliance Service LLC is licensed and insured to work in Washington State. WA contractor license #ACEAPAS774K6.
What areas do you serve?
King and Snohomish County, including Seattle, Bellevue, Kirkland, Bothell, Edmonds, Lynnwood, Everett, Mukilteo, Mill Creek, Snohomish, Kenmore, Woodinville, Mountlake Terrace, Lake Forest Park, Shoreline, Redmond, Issaquah, Sammamish, Mercer Island, Clyde Hill, and Medina.
Common Bosch refrigerator problems
Why is my Bosch refrigerator not cooling?
There are several possible causes, and one of the most common is a failed defrost system. A frost-free refrigerator melts the frost off its evaporator coil on a regular defrost cycle. If any part of that defrost system fails, frost keeps building until the coil is packed in ice and cold air can’t move through it. On this Lake Forest Park Bosch, the coil was completely iced over and the fix was a new defrost sensor.
Bosch fridge noisy, ice maker stopped, and freezer soft all at once?
Those three symptoms together often point to one problem: an iced-over evaporator. Ice around the coil can catch the fan behind it, and a freezer that can’t hold temperature won’t keep making ice. On this job all three traced back to the failed defrost sensor.
Can I just defrost my Bosch refrigerator myself?
Unplugging it and letting the ice melt can bring it back for a while, but if a defrost part has failed the ice builds up again. The lasting fix is finding and replacing the part that stopped the automatic defrost.
Ready when you are
Freezer icing up or not staying cold? Let’s find out why.
Call now for the fastest response, or send us a few details and we'll call you back within one business hour.
(425) 533-0823 Call Now · Same-Day ServiceMon–Fri, 8am–6pm