Sub-Zero 642 freezer okay food side does not light and display panel not working Condenser is operationafood side. Not lighting and display panel not working

SOURCE: ICE MAKER SUB ZERO REFIGERATOR

Check water turned on. check ice button switch turned on in fridge. remove juice storage, ice container in freezer, check ice bucket full white plastic flapper to make sure not stuck on a white peg at top. flapper must hang down and be freely movable to signal ice maker to keep busy. If up high will turn off ice maker. Lots of other parts especially heater circuits involved also: fill tube supply heater not working then frozen supply line then no ice. Look for wiring diagram in ziplock behind compressor grille. can order parts at repairclinic.com. logical design, layout, easy to get to sensors, heaters. makes sense if look at it long enough.

SOURCE: Ice maker in Sub Zero 642

Call the factory at 800-222-7820 for the manual. It souns like you are missing one or two screws. Pull the ice tray out and lift it up about an inch and it should release. Take a look at the ice maker and there are two supports that both need to have screws on them. There is also a third underneath on some models. Insert the screws and you should be fine.

SOURCE: vacuum condenser light of sub zero 650 is on - how to clean it

We recommend vacuuming your condenser every 3 - 6 months. Cleaning the condenser is important for the overall operations of the unit including cooling functions. A dirty condenser may lead to warm temperatures in the refrigerator and freezer. It may also cause the unit to run excessively. It may contribute to condensation or frost inside of the compartments. If the condenser is not cleaned properly it may even cause premature failure of mechanical components in the unit. Condenser Cleaning - All Models Before cleaning the unit, shut the electricity off at the control panel. When you clean the condenser, wear gloves to avoid injury from the sharp condenser fins. Use a soft bristle brush and vacuum to remove dust and lint from the condenser. To avoid bending the condenser fins, be sure to vacuum in the direction of the fins, up and down. Clean the condenser every three to six months or sooner if you have pets. 600 Series Framed and Stainless Steel louvered grilles: First remove the grille screws located at the bottom of the grille. Tilt the top of the grille forward and release the springs from behind the grille, then lift off. Overlay Panel Grille: To remove, lift up then pull out at the bottom and down to release from its mounting bracket. Remove the two black screws in the lowest louver of the grille. Tilt the bottom of the grille out and away. It will release from the top of the grille. Model 601RG Stainless Steel Grille: Remove in a similar fashion as the overlay grille panel. 700 Series All Units: At the bottom of the unit, remove the four screws holding the kick plate/grille in place. It will then slide forward, giving you access to the condenser area. 400 Series 424/424FS At the bottom of the unit, remove the screws holding the kick plate. The condenser is located behind. 427/427R: Remove the four screws holding the kick plate/grille in place. It will then slide forward, giving you access to the condenser area. 430: First remove the screws located at the bottom of the grille. NOTE: These screws (Phillips head) are accessed with the door open. Tilt the top of the grille forward and release the springs from behind the grille, then lift off. 200 Series 245, 249, 315W Remove the kick plate at the bottom of the unit, giving you access to the condenser area.

SOURCE: Sub-Zero service manual

Here is a link to the error codes. If there is a fault condition these should be flashing on the display:

http://fixitnow.com/wp/2006/06/29/error-codes-for-the-sub-zero-600-series-refrigerators/

One this to try is a hard reset: unplug and wait for a few minutes and re-plug back in. Sometime this resets the service condition and will then display the error codes.

Ice is displayed when the ice maker is turned on. Press the ice on/off and it should turn off.

SOURCE: side by side sub zero refrigerator: freezer is

still not clear. in your question you say refrig side is dark and not running, then you say you put a temp guage in it overnight and it's steady. So you DO have cooling in refrig? If it's just the lights, yes it could the switch or it could be the light bulbs.