A pair of ovens, 3 cu ft and 1.3 cu ft, each limited to Broil, Gas top/bottom heat and Self-Clean, makes the PRL486NLG a simple, rugged 48-inch gas range. With few cooking modes there is little to confuse the control, which narrows a service call down quickly: if heat is wrong, it is almost always ignition, gas or sensing.
We begin by running each oven alone, because they have separate burners and igniters. A cavity that will not light points to its igniter or gas valve. One that lights but gives uneven broil points to ports and flame shape. A Self-Clean cycle that locks up points to the latch assembly for that door.
Thermador still lists the model on thermador.com, without a successor named. On a range this wide we also level it and check the anti-tip hardware after any move, then inspect the cord and outlet.
They are different sizes, 3 cu ft and 1.3 cu ft, so some difference is expected. If the larger oven is slow, the usual cause is a weak igniter or a clogged burner port.
A lopsided flame suggests a blocked port or debris on the burner. Stop using that oven, switch off the gas to it if you can do so safely, and call us for cleaning and a flame check.
Many repairs are reachable from the front, but a gas or wiring check may need the range moved. We shut the gas off first and confirm the anti-tip bracket afterward.
Request a visit online in about a minute or phone our coordinators. Close-in neighborhoods often see a same-day slot; the outer counties usually get the next day across Houston.