Aug2024

Thermador Main Oven Repair

After reviewing schematic and the official service manual I felt that I should be able to figure out what main oven component is broken that causes the oven to continually heat up, even after Mr. Appliance's thermostat replacement. Using the service manual I did the following:
- switched off Oven Breaker in pump room
- removed the toe kick plate, revealing the ovens' electrical components
- tested the Hot-Wire relays:
  - Proof Oven relay had a broken lead from the capacitor to the R terminal; I resoldered it. Found a resistance of 1.6k ohms between R and S (not the less than 1 ohm as suggested by the service manual)
  - Main Oven relay also tested showing 1.7k ohm resistance between R and S
- tested the timers:
  - Proof Oven timer showed about 17M ohms between the two Load terminals (not less than 1 ohm as suggested by the service manual)
  - Main Oven timer showed about 16.5M ohms between the two Load terminals
- tested the Hi-Temp breakers
  - Proof Oven, checked okay; reset button not extended; pressed the reset button anyway
  - Main Oven, checked okay; reset button not extended; pressed the reset button anyway
- re-installed each component as it was tested, and re-connected all wires, which had been removed for testing.
After testing and re-connection of all wires, switched on power at the breaker panel
Interestingly(!), the Main Oven was tested just for grins. Lo! It works!
Perhaps the disconnection and re-connection of each of the wires had something to do with it.

Ashley BA - Kohler Shower Faucet Cartridge replacement (from eBay)

Removed handle by unscrewing the shaft sleeve, then the handle, then the nylon spline coupler, the spline and shaft housing.
Removed cover plate
Removed x2 machine screws from retaining ring, and the retaining ring
Removed the old cartridge, and the hot/cold pressure balancer
Found and removed a balancer O-ring from brass valve housing, cleaning the hot and cold water entry points
Using plumbers silicone grease, installed x2 small O-rings to rear of the new balancer, x2 medium O-rings to the rear ports on cartridge, and large O-ring on new cartridge
Installed new balancer and cartridge into brass housing, securing with new ring and machine screws
- NOTE: cartridge can be installed upside-down, which reverses the hot and cold flows. Check that the small flat tab on the cartridge is facing upward
Re-installed coverplate, shaft housing, spline, spline coupler, and the handle