CHECK WATER
SUPPLY Error
Check water pressure
at filter. Minimum 30psi
required, a reverse
osmosis system must
have a bypass.
Do not use distilled
water!
Filter
pressure more
than 30psi?
Filter
lever in the ON
position?
Is the unit
gauge more
than 30psi?
Check valve
installed with
arrow toward
unit?
No
Inspect source
tubing for kinks
and bends, and
debris. Replace
check valve if
required. Replace
filters and retest.
Yes
Water
source line
OK?
Check tubing from base fitting
to pump and from pump to
water tank.
Internal
tubing
OK?
Yes
Yes
Turn off water to machine.
Open drain valve to
relieve pressure. Inspect
for pinched tubing on all
ferrules going into water
tank.
Power unit down.
Yes
Yes
Replace water
source tubing.
No
Rotate check valve
so the arrow points
toward the unit.
No
Replace
damaged tubing.
No
Move filter lever to
the ON position.
No
Verify water to
filter is on. If water
is on, check for
blockage at filter
input fitting.
No
Yes
Open water tank
drain valve.
Water at drain
fitting (behind the
grounds bin)?
Yes
No
Close drain valve.
Power unit on.
CHECK
WATER SUPPLY
message
displayed?
Check water hardness. If over
3gpg, inform customer that they
need softener system for
optimal performance. Record
water hardness and inform
Concordia for records.
No
Run milk and brew
clean processes,
and then run some
test drinks.
Press service
switch to
SERVICE position.
Navigate to TEST
ROUTINES > HOT
WATER VALVE.
Activate valve.
Yes
Water
pours from
nozzle?
Verify valve is plugged
in and has 24Vdc.
Verify water is in tube
running from top of tank
to hot water manifold.
With machine still on, turn off
water supply and bleed off
back pressure (open water
drain valve). Remove ground
level probe and touch it to
ground.
Yes
No
Warning
went
away?
Discuss reverse osmosis or
distilled water being used
and not showing on probe.
Call Concordia Beverage
Systems for assistance.
1-800-778-0990
Yes
24Vdc
present?
No
Check for shorted coil,
Verify U15 on CPU board
is functional. Replace coil
and U15. Retest.
In REFERENCE
TO GROUND,
check for 30mv AC
wet and 800mv AC
dry signal at purple
wire on level
probe.
No
Voltage
present?
Run continuity check on
black wire at bottom of
flowmeter to pin 22 on JP7.
Run continuity
check on purple
wire to pin 21 on
JP7.
Yes
No
Continuity
present?
Check pins and
connectors going to
CPU for possible
dislodged pin. Replace
CPU as last resort.
Yes
Locate break in
wiring harness or
connector, and
repair.
Continuity
present?
No
Yes
No
Check pins and
connectors going
to CPU for
possible dislodged
pin. Replace CPU
as last resort.
Turn off machine. Bleed off
back pressure. Access
brass fitting on top of water
tank. Clear any blockage at
brass connector and tube
connection.
Yes
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