Pro Harmony and Pro Grand ranges
Thermador makes two range lines. Pro Harmony is the shallower one and lines up with standard cabinets. Pro Grand is deeper and offers more cooking options. Widths run 30, 36, 48 and 60 inches. The 30 and 36 inch sizes come in gas, dual fuel or induction. The 48 inch comes in gas or dual fuel. The 60 inch is dual fuel. Bigger Pro Grand ranges can have a griddle, a grill and a steam oven beside the main oven.
A range has burners on top and an oven below. That is two appliances in one box, and each half has its own faults. We are an independent shop that works on both halves. Our Thermador repair page covers the rest of the brand.
Top burner faults on a Thermador range
The Star Burner has five points. Thermador's patent is on that shape. Spills settle in the points and block the small flame ports. Then the burner lights late, or lights on one side only. Clean ports and a dry igniter fix most of these.
Parts fail too. An igniter cracks and stops sparking. The spark module dies and every burner goes quiet at once. A knob switch sticks and the range clicks all day. One thing is not a fault. On ExtraLow settings the flame shuts off and relights on a timer. Thermador says a click about once a minute is normal there.
Oven faults by fuel type
How the oven heats depends on the range you own.
- Gas oven. The gas valve opens only when the glow igniter draws enough current. An old igniter still glows orange yet falls short. The oven heats slowly or not at all.
- Dual fuel oven. The oven is electric. A bake or broil element burns out, or a relay on the control board stops sending power.
- Induction range. The top is electric and needs pans a magnet sticks to. The oven below is electric too.
On every type, a bad temperature sensor throws the heat off. Cakes burn on the edge and stay raw in the middle. A dead convection fan leaves one side of the tray pale. A worn door gasket lets heat pour out the front.
A Thermador door stuck shut when self-clean ends
Self-clean runs the oven far hotter than baking does. A small motor bolts the door for the whole cycle. Once things cool, that bolt should slide back. When it stays put, suspect the lock motor or the switch beside it. That extreme heat can also trip a safety fuse, and then the oven goes dead. Wait two hours before you worry. Do not pry the door. Call us if it stays shut.
Griddle, grill and steam oven sections
On a 48 or 60 inch range the extras need care of their own. A griddle that stays cold usually has a bad element or sensor. A steam oven needs a full water tank and a descale now and then. When it asks for a descale, run the program. Scale is the main thing that stops steam.
What happens on a range call
Range owners tend to land a slot on the day they call. Our tech reads the model tag, runs each burner and heats the oven. We carry igniters, sensors and common elements on the truck. The visit fee is $79 at a home. We waive it once you approve the fix. You hear one fixed price first, with parts and labor inside it. Use the web form, or ring us between 6 AM and 9 PM on whatever day suits. We screen each tech's background and require a license and insurance. Range repairs leave with a 30-day repair warranty.
Why most Thermador ranges get repaired
A pro range weighs hundreds of pounds and sits on a gas line. Replacing it may mean new trim and a new hood width. The usual failed parts are small next to that. So repair wins in most homes. We look harder at the math when an old control board is no longer made. In that case we check supply before we quote.
Before you call, try three things. Dry and reseat the burner caps. Check the breaker, since even a gas range needs power to spark. Note what the display says. We serve Thermador owners in Washington D.C. and close-in suburbs. See our Washington D.C. appliance repair page. Crews also run in Virginia, Illinois, Texas and California. For a cooktop with no oven, see Thermador cooktop repair. Our range repair page covers other makes. On a Pro Grand, tell us which section failed. It saves a second trip.