TROUBLESHOOTING
If the Circle experiences difficulties, close the T-valve to shut off the incoming
water to the Circle.
Problem
My TDS meter is not
reading zero
No water, not enough
water, or low water
flow
Unexpected flow in
drain line
No drain flow
Bad tasting water
Cloudy water
Leaking water from
the Circle
Unusual sounds during
operation
20
Possible Cause
It could be normal operation or the filters
may need to be changed
Incoming water supply valve is turned off Turn on incoming water supply valve
Low incoming water pressure
Capacity is exhausted
Plumbing restriction
Other filter or RO membrane is clogged
Internal valve is inoperative
Internal valve is inoperative
Other filters or RO membrane (3) is clogged See Filter Replacement (page 16)
Internal regulator is inoperative
Post Carbon Block Filter is exhausted
Newly replaced Post Carbon Block Filter
is not flushed completely
Problem with the water tank bladder
Dissolved air in incoming water supply
Tube is not fully inserted into a connec-
tion
Filter is not installed correctly
Problem with one of the internal
regulators
Solution
Generally, RO systems lower TDS readings
by 90% as compared to tap water readings.
This is a normal working range. For example,
if your tap water TDS reading is 100, then a
normal TDS reading for the RO filtered water
is in the range of 0–10. If the TDS reading for
the RO filtered water is higher than 15% of
normal tap water, this indicates it time for a
filter change (including RO membrane).
Verify pressure is above 40 psi; install a
booster pump if needed
Allow time for the Circle to replenish the
water tank
Check connections and tubes for
obstructions
See Filter Replacement (page 16)
See product warranty in last page of manual
and contact Brondell
See product warranty in last page of manual
and contact Brondell
See product warranty in last page of manual
and contact Brondell
See Filter Replacement (page 16)
Open the provided faucet and drain the
water tank once. Flush one or two tanks
of treated water through the Post Carbon
Block Filter
See product warranty in last page of manual
and contact Brondell
Problem should clear up as the condition of
the incoming water changes. Letting water
stand will allow the dissolved air to dissipate
Make sure the tube is at least 1/2-inch into
the connection
Ensure that all four filters are locked into
place
See product warranty in last page of manual
and contact Brondell