Plunge All-In Is Not Cooling: Filter, Flow, Air Purge, Firmware, and Next Steps

Low flow is the most useful first check when an All-In is not cooling. Keep the filter installed during every normal troubleshooting step.

1. Confirm the symptom

• Record the set temperature, displayed water temperature, ambient temperature, and any error code.
• After changing the set point, allow 1 to 2 hours before deciding that cooling is not responding.

2. Restore filtered water flow

1. Pause the unit and wait for the jets to stop.
2. Install a new, correctly seated filter.
3. Clean the O-ring groove and hand-tighten the lid.
4. Refill to the normal operating level.
5. Complete the All-In air purge.

3. Check airflow and firmware

• Clean the ventilation screens.
• Use the clearance in the setup manual and keep the hot-air exhaust unobstructed.
• Shade the product when practical.
• Install the latest firmware in the Plunge app.

4. If CF or restricted flow remains

Complete the approved deep-clean procedure. Its only filterless step occurs after a 101–104°F cleaning cycle with 16 fl oz of Oh Yuk or comparable labeled-dose cleaner circulated for at least eight hours, followed by draining and rinsing. The filterless rinse lasts only 5 to 10 seconds. Filterless operation is never an ordinary diagnostic.

If cooling or flow remains abnormal after one complete self-service cycle, stop and contact Support.

Still need help?

Submit a Plunge Support request. Include your product, serial number, and the results of the steps you completed.