Riverbend Refrigeration — +1 (904) 977-8701 — independent Sub-Zero refrigeration repair in Jacksonville, FL.
Booking: +1 (904) 977-8701 (tel:+19049778701). Source: https://jaxsubzero.com/repair/refrigerator-not-cooling/

# Refrigerator not cooling

> A Sub-Zero fresh-food side warming while the freezer holds is a dual-refrigeration symptom. What we measure in Jacksonville before we open anything.

System: sealed system. Cabinet: built in refrigerator.

## Symptoms an owner reports

- Fresh food section warm while the freezer still holds
- Both compartments drifting up together over several days
- The compressor runs constantly and never cycles off
- Interior air feels humid and produce wilts within two days
- Frost building on one wall of the freezer only
- The cabinet is quiet and nothing runs at all

A Sub-Zero built-in runs two sealed systems, not one. There is a compressor and
evaporator for the fresh food section and a separate pair for the freezer, which
is why the two compartments can disagree. That single fact splits this call in
half before anyone connects a gauge, and it is the reason a Sub-Zero is not
diagnosed the way a one-compressor refrigerator is.

## Which half is warm decides everything

If the freezer is holding and the fresh food side has drifted to the high 40s,
the freezer's sealed system is proven good. Refrigerant, compressor, condenser
and the whole high side are working. The fault sits in the fresh food circuit or
in the air path that serves it, and that is a much shorter list.

If both compartments climb together over three or four days, the shared parts
come back into scope: condenser airflow, the electrical supply, and the control
that starts both compressors.

## The order we work in

**Temperature at the shelf, not on the display.** We log actual air temperature
in both compartments with our own probe and compare it against the setpoint. A
display reading 38 while the shelf reads 47 is itself a finding.

**Condenser condition and discharge air.** The condenser on a built-in sits
behind the upper grille, and in this city it collects a season of pollen by
March. A blocked condenser raises head pressure, and the symptom presented at
the door is warm food, not a hot machine.

**Evaporator frost pattern.** We pull the interior panel and read the ice. Frost
covering the whole coil evenly is normal operation. Frost on the first third of
the coil and bare metal after it points at a low charge or a restriction. A
solid block of ice over the coil points at a defrost fault, and defrost faults
are cheap compared to sealed-system work.

**Evaporator fan and air path.** Cold air has to be moved. A stalled fan or a
duct blocked by a food container produces a warm fresh food section with a
perfectly healthy compressor behind it. We check this before anything else in
the sealed system, because it is common and it is inexpensive.

**Voltage under load.** We read supply voltage while the compressor is starting.
In older Jacksonville kitchens the cabinet often shares a circuit it should not
share, and a compressor that browns out on start will present as a unit that
cools poorly and runs all the time.

**Door seal and door habits.** A door held open by a bottle on the shelf edge,
or a gasket that lost contact along the hinge side, loads the system with humid
Florida air continuously. In summer that alone will hold a fresh food section
five degrees above setpoint.

## Only then, the sealed system

Sealed-system work is the last step, not the first, and it is the one that
requires EPA Section 608 certification to perform legally. Recovering a charge,
finding a leak and recharging is real work with a real price, and we will not
quote it until the cheaper causes above have been ruled out in front of you and
written down.

If the answer genuinely is a compressor or a leak in the evaporator, we will
tell you what the repair costs against what the cabinet is worth. A built-in
that is fifteen years old with an intact interior and a straight door is usually
worth repairing. One that has already had two sealed-system repairs is a
different conversation, and we would rather have it honestly on the first visit
than after you have paid for a third.

## What the visit involves

The diagnostic is a flat fee and it is credited in full toward the repair if you
approve the work. You get the measured numbers — both compartment temperatures,
supply voltage, and the frost pattern we found — in writing, along with the
estimate, before any part is ordered.

We are an independent shop and we service Sub-Zero refrigeration only. Parts are
genuine OEM, and the workmanship carries 90 days on labor with 365 days on the
parts themselves.

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Riverbend Refrigeration is an independent appliance repair company. We are not affiliated with, authorized by, or endorsed by Sub-Zero or its parent company. All brand names and model numbers are the property of their respective owners and are used only to identify the appliances we service.

Riverbend Refrigeration · +1 (904) 977-8701 · Jacksonville, FL