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ALAS Appliance Service

Sub-Zero 648PRO: Service and Ice Flashing Together

When both words blink, the refrigerator has switched off its own ice maker as a precaution. Sub-Zero’s reset is simple, and how often it recurs tells you what to do next.

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Why the 648PRO Shuts Its Ice Maker Down

Sub-Zero says Service and Ice flashing together on a 648PRO mean the ice maker has been shut down as a precaution, either because its water valve solenoid was energized too long or because the ice maker was disabled to prevent water leaking or water damage. The owner step is to turn the unit off for 10 seconds and back on with the On/Off or Power button. If only Service keeps flashing while Ice stays solid, the Service flashing guide applies instead. Sub-Zero adds that flashing which returns often within a short time calls for its Factory Certified Service, while a recurrence after six months or more can be reset again. Source: Sub-Zero 648PRO Service and Ice (opens in a new tab).

Written Estimate First

Nothing is repaired until you approve it

Based in Plano

Serving homes across Dallas–Fort Worth

Real Warranty

90 days, 6 months for members

Diagnostic Credited

Toward the repair if you go ahead

Evenings and Weekends

Open daily, 8–8

Sub-Zero’s Reset for the 648PRO

Keep a towel nearby in case there is water in the ice area.

1

Off for 10 seconds

Turn the unit off at the panel and wait 10 seconds.

2

Back on

Press On/Off or Power. Sub-Zero says ice production should resume shortly after.

3

Watch which word blinks

If only Service keeps flashing with Ice solid, follow the Service flashing steps instead.

If the flashing returns often within a short period, schedule service.→

When to Call a Technician

Schedule a repair if:

  • Flashing returns within weeks
  • Water is pooling near the ice maker
  • No ice a day after the reset
  • Service flashes alone afterward

Written estimate first

Shut-Off Keeps Happening?

We test the water valve, fill tube and supply pressure and give you a written estimate before replacing any part. ALAS stands apart from Sub-Zero’s service network, so a 648PRO inside Sub-Zero’s warranty should go to Sub-Zero first.

  • Diagnostic fee credited toward the repair
  • 90-day warranty, 6 months for members
  • Open daily, 8 AM–8 PM
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Sub-Zero Service and Ice FAQs

Sub-Zero says the ice maker was shut down as a precaution, either because the water valve solenoid was on too long or to prevent a leak.

Turn the unit off for 10 seconds, then back on with the On/Off or Power button.

When the flashing returns often within a short time. Sub-Zero says a return after six months or longer can simply be reset again.

Yes. See Sub-Zero ice maker repair for refrigerator and undercounter ice makers.

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  • Written Estimate First
  • Diagnostic Credited
  • Real Warranty
  • Based in Plano
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