Set Your Water Softener’s Regeneration Start Time

Set the softener’s current clock first, then change its regeneration start-time setting to a period when you won’t need water. A 2:00 a.m. start is the factory default on the GE and Whirlpool models below, but another time may fit your household better. The button sequence depends on the exact model—not just the brand. (GE manual, p. 17; Whirlpool manual, p. 13)

Check your model and matching manual before using these steps. Make changes while the softener is in normal service, not during regeneration.

Choose a start time, not a cycle duration

Regeneration start time means the clock time when a scheduled cycle begins. It is different from:

• Frequency: how often the softener regenerates, based on water use or a programmed day schedule.
• Cycle duration: how many minutes the backwash, brine draw, rinse and refill stages run.

A delayed-demand softener does not necessarily regenerate every night at your chosen time; it waits until regeneration is needed. An immediate-demand control can start when its calculated capacity runs out instead. Don’t change the control type simply to move a nighttime cycle. (Pentair manual, pp. 5–7)

Leave enough time for the complete cycle before morning showers or other water use. GE’s GXSH40V/GXSH45V manual describes approximately two hours, so 2:00 a.m. would mean roughly a 4:00 a.m. finish—not a universal duration for every softener. These GE models bypass hard water to the house during recharge; avoid hot-water use because it refills the water heater with untreated water. (GE manual, pp. 4 and 17)

GE GXSH40V and GXSH45V

1. Press MODE/SET until the arrow points to CLOCK. Set the actual time with UP/DOWN, checking AM or PM, then press MODE/SET to accept.
2. Press MODE/SET until the arrow points to RECHARGE.
3. Use UP/DOWN to choose the regeneration start time. Check AM or PM again.
4. Press MODE/SET to accept. Continue through any remaining screens without changing their values until the normal display returns.

Use this sequence only for a matching controller. (GE programming instructions, pp. 16–18)

Whirlpool WHES30 and WHES33

1. Press PROGRAM until CURRENT TIME appears. Use UP/DOWN to set the actual time, including AM or PM.
2. Press PROGRAM through the hardness screen without changing its value, until RECHARGE TIME appears.
3. Use UP/DOWN to select the new start time, checking AM or PM.
4. Press PROGRAM again to return to the normal time-of-day display.

Holding RECHARGE starts an immediate cycle; it does not edit the recurring start time. (Whirlpool programming instructions, pp. 12–14)

Fleck 5600SXT

1. To correct the clock, hold either UP or DOWN until TD appears. Adjust the time, then press Extra Cycle to return to normal operation.
2. While the unit is in service, hold UP and DOWN together for five seconds to enter User Programming. The clock must not read 12:01 PM, which is the entry condition for Master Programming. If that is the actual time, wait until the minute passes.
3. At DO (Day Override), leave the value unchanged and press Extra Cycle to reach RT (Regeneration Time).
4. Adjust RT with UP/DOWN, checking AM/PM on a 12-hour display.
5. Press Extra Cycle through the remaining available settings without changing them, then press it at the end to exit. Don’t leave the menu idle: a 60-second timeout discards changes.

Available screens depend on the controller configuration. If RT is absent, don’t enter Master Programming or change the control type just to expose it; check the matching manual or ask the system supplier. (Pentair instructions, pp. 4 and 6–8)

If it still regenerates at the wrong time

Recheck the current clock, AM/PM and saved start time, especially after a power outage or daylight-saving change. GE and Whirlpool explain that an incorrect clock after a long outage can shift regeneration even though the programmed start time remains stored. (GE manual, p. 21; Whirlpool manual, p. 14)

If the problem is too-frequent regeneration, moving the start time won’t address it. Check hardness, usable capacity, reserve and day override rather than shortening regeneration stages.