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What the work order read
“Freezer not cooling.” Bosch B36CT-series counter-depth French-door, model B36CT80SNB. The customer in Holyrood had reasonable cause to be braced for a large quote. The B36CT line uses two independent sealed systems — one per compartment, Sub-Zero-style — and “freezer not cooling” on a dual-compressor unit has a long, expensive differential: sealed-system leak on the freezer-side circuit, compressor failure, control-board fault commanding the wrong cycle.
What the customer expected
Most “freezer not cooling” calls on premium refrigerators get quoted somewhere between $1,500 and $3,500 — sometimes higher when a sealed-system rebuild is on the table. A homeowner who has searched the failure online has probably already seen the word “compressor” in the first five results. The mental preparation is for a multi-thousand-dollar conversation.
What the diagnostic actually showed
Bosch technician Oleksandr pulled the freezer compartment cover and ran through the failure list in order. The freezer-side compressor was operating. The freezer evaporator fan was operating. The condenser fan and condenser side were fine. The fault traced one step over — the refrigerator-compartment evaporator fan was the failed component. On a dual-compressor unit, the refrigerator-side evap fan disruption was enough to throw the cooling cascade off across the rest of the cabinet, which is what produced the freezer-side complaint at the call-in stage.
One part. Not a sealed-system rebuild. Not a compressor. Not a control board.
The repair
Components replaced:
- Bosch evaporator fan (part #12026640) — refrigerator-side evaporator fan motor; the airflow source for the cold-air loop that feeds both compartments through the cascade
Verification — Bosch service diagnostic mode performed:
The B36CT-series has a built-in service diagnostic that cycles every major subsystem and reports operational status on the unit’s control display. After the fan install, the diagnostic was run end-to-end. The result confirmed:
- Both compressors activated correctly on their respective circuits.
- Both evaporator fans — refrigerator and freezer — operating at correct speed.
- Condenser fan operating.
- Sealed-system cooling restored across both compartments.
Running this diagnostic isn’t a “did it work” gut check after the fan came back on. It actively exercises every major subsystem and confirms each one is healthy — catching anything that might be on the verge of failing before it surfaces as a callback. Most technicians skip this step on a routine repair. Bosch put it in the firmware for a reason; we use it.
Why the difference matters
This is the kind of repair where the diagnostic discipline is the entire economic case. The lazy-and-profitable diagnosis on this complaint pattern is to quote the high end of the differential, take the customer’s deposit on a sealed-system rebuild, and either find a way to do the bigger job or “discover” the fan was the real problem after the customer is already committed. The right diagnosis was the smaller one — a single OEM fan, installed on the same visit, with everything else on the unit verified as healthy by the manufacturer’s own diagnostic protocol.
What the customer actually paid
$490 + GST = $514.50 CAD total. Parts, labour, and the diagnostic visit all included on one line. This is the lowest-cost completed repair on a premium-brand refrigerator in TechVill’s documented Edmonton portfolio so far, and that’s the point of the case: on a dual-compressor Bosch Benchmark-tier French-door, the proportionate answer was a sub-$600 single-part repair backed by full subsystem verification — not a five-figure replacement, not a four-figure sealed-system quote.
Need Bosch Appliance Repair in Edmonton?
TechVill is factory-authorized by Bosch for appliance repair across Edmonton and surrounding areas. Our technicians arrive with Bosch-compatible test equipment, run the manufacturer’s service diagnostic where the model supports it, and source genuine OEM parts through Bosch’s factory-authorized supplier network.
Book online to schedule a Bosch refrigerator diagnostic with our team.