Culligan 01010091 (mark 89) softener will not auto

Press the bypass valve piston (sideways) to bypass.

Either the electric valve has failed, or the line is plugged. Try blowing out the water line first and free it up from buildup and then if it seems unobstructed, check the valve function. Salt crystal buildup is common.

The noise is normal during regeneration and draining.
You can manually set the regen clock to a different time.

There are Noises in My Culligan Water Softener Regeneration System Hunker

Here is a the link for the MK 89 Use and Care Guide
http://www.isingsculligan.com/manuals/Mark89-812%287-97%2900881597.pdf

If you are looking for a parts manual that may be almost impossible as they are very protected.
RJ

Hold the REGEN button down for 5 seconds. This initiates a manual regeneration. You can step the unit through the cycles by pressing the UP arrow.
RJ

To manually regenerate at 2am push regen button once. To regen immediately push regen button 2 times.
RJ

The back flow filter is clogged. It will need to be cleaned out. When it is clogged the pressure reverses so the valves will stay open to clean without shutting off

"DAYS00" indicates it is set to run every day. You may have lost power and it reset to factory settings. If the Gold series softener you have is the Aqua Sensor model (this is a probe in the resin tank that senses a change in the water chemistry and sends a signal to regenerate) the probe can get coated with iron and will either send NO signal or a Constant signal which will make it regen every night.
Usually a Gold series softener is either set up as metered or aqua sensor. There is an option for an override (such as 14 days) or it can be set up as a time clock model. Unplug the softener for 2 minutes and plug back in, re-program the controls to "DAY14". Make sure what the system is suppose to be set up as, Meter, AS, Time Clock.
Here is a link to Culligan for the Gold manual.
http://www.culligan.com/en/service-and-maintenance/customer-support/owners-guide/

RJ

If the unit will recharge then you might have what is called a salt bridge in the tank. The salt is stuck above the water level in the salt tank. Poor a gallon of water over the top of the salt and see if you can then break it up. The salt should go down then.

I have the same problem... did you find out what was wrong???