Appliance Repair Jax is an independent appliance service company. We are not affiliated with, authorized by, or endorsed by Sub-Zero Group, Inc., or any other manufacturer named on this site. All brand names, model numbers and trademarks are the property of their respective owners and are used here only to identify the appliances we service.
Repair guides
Work out what is actually wrong before anyone opens a toolbox — and find out whether it is something you can fix yourself.
12 guides
Troubleshooting
One compartment warm, the other frozen solid. On a built-in with two evaporators that pattern is normal, and it rules out most of the fault list fast.
Troubleshooting
Brew groups, burrs, pumps and flow meters. What goes wrong inside a built-in espresso system, what an owner can fix, and when the unit has to come out.
Troubleshooting
Poor wash results have three common causes and only one of them needs a part. How to separate restricted spray arms from a blinded filter and a failing pump.
Troubleshooting
Work it in the order that eliminates whole categories: freezer temperature first, then water supply, then the ice maker itself. Cross-brand diagnostics.
Troubleshooting
A burner that keeps sparking after the flame is up is almost always wet or misaligned, not a failed module. Here is how to tell in about ten minutes.
Troubleshooting
Burnt edges, long preheats, a cake that never sets. Sensor drift, calibration offset, a tired door seal and gas pressure each look the same from outside.
Troubleshooting
USDA food safety windows, the order to move things in, and the seven checks worth making before you call anyone. Written for the morning you find it warm.
Troubleshooting
Thermoelectric and compressor wine units fail in completely different ways. Ambient heat, a fouled condenser and a tired seal explain most drift we see.
Troubleshooting
Sub-Zero refrigerator and freezer doors have no lock. What feels like a locked door is almost always a vacuum. Here is how to tell that apart from a real fault.
Troubleshooting
Sub-Zero's own diagnostic order for an ice maker that stopped, plus the freezer temperature threshold, the filter part numbers, and what hard North Florida water does.
Troubleshooting
Warm refrigerator, freezer still at zero. On a Sub-Zero that is a normal failure pattern, not a contradiction. Here is what dual refrigeration narrows it down to.
Troubleshooting
Sub-Zero says the freezer drain tube is most often frozen, not clogged. Here is how to confirm it, the controlled defrost that clears it, and what never to do.
Other topics
Talk to a technician
Tell us the model number off the data plate and what it is doing. We will tell you what it is likely to be, what it usually costs, and when we can get there.