Flow Error/Low Flow IssueUpdated 7 days ago
If your chiller shows a Flow Error or you notice weak water circulation, it means the system is not getting enough water flow to cool properly. This is one of the most common issues and is usually easy to fix. Strong and steady water flow is important for proper cooling and for protecting the chiller.
This guide explains the most common causes and how to fix them.
1. Check the Filter First
A clogged or dirty filter is the number one reason for low flow.
Replace or rinse the filter if
- the flow feels weak
- water looks cloudy
- the filter is discolored
- debris is stuck in the fibers
- the filter has been used for several weeks
A clean filter usually restores normal flow immediately.
2. Make Sure the Filter Is Seated Correctly
If the filter is not installed correctly, the chiller may not pull water through it.
Check the following
- The filter is pushed all the way in
- The filter is straight and secure
- The filter housing is fully closed
An improperly seated filter can cause the chiller to show a Flow Error.
3. Check for Kinks or Bends in the Hoses
Hose restrictions reduce circulation and trigger low flow warnings.
Inspect all hoses for
- tight bends
- sharp angles
- pinched areas
- hoses pressed against walls or furniture
Straighten the hoses to allow smooth water movement.
4. Remove Air Bubbles From the Line
Air trapped in the hoses can interrupt water flow.
To remove air
- lift the hoses gently to let air escape
- reposition the hoses until water flows smoothly
- check the water intake area for trapped bubbles
- confirm that water is moving without sputtering
Air pockets are very common after a fresh refill or hose reconnection.
5. Check Water Level Inside the Tub
If the water level is too low, the chiller may not be able to pull water correctly.
Make sure the tub is filled to the recommended level.
Low water levels can cause weak flow and repeated flow warnings.
6. Inspect the Intake and Outlet Connections
Loose or partially connected hoses can reduce flow.
Check that
- hose clamps are tight
- fittings are fully seated
- nothing is leaking around the intake or outlet
Even small leaks can reduce circulation.
7. Clean the Filter Housing and Intake
Debris can collect around the filter compartment and reduce flow.
Clean the area by
- removing the filter
- wiping the housing and intake area
- removing any hair, dirt, or buildup
This ensures the pump can pull water easily.
8. Check the Pump Area for Blockages
Some flow issues are caused by debris inside the intake area.
Look for
- hair
- dirt
- loose debris from the tub
- buildup around the intake screen
Clearing blockages usually restores normal flow right away.
9. Restart the Chiller
Once you have cleaned the filter and checked the hoses, restart the system.
To restart
- Turn off the chiller
- Unplug it
- Wait one to two minutes
- Plug it back in
- Turn the chiller on again
A restart helps the system recognize the restored water flow.
10. Replace an Old or Overused Filter
If your filter is old or heavily used, rinsing may not be enough.
Replace the filter if
- flow does not recover after cleaning
- the filter remains discolored
- the filter fibers appear compacted
- water remains cloudy after multiple rinses
A fresh filter often solves low flow instantly.
When to Contact Support
Contact our team if
- the flow error continues after you cleaned or replaced the filter
- water circulation remains weak
- the pump does not seem to pull water
- the error repeats every time you restart
- you suspect an internal issue
Our support team is happy to help.
Email: [email protected]
Phone: (386) 388-6867