Cornelius IDC 255 - MOTOR REMOVAL; DIAGNOSTICS GUIDE FOR THE MAIN CONTROL BOARD

IDC 255 Progate Drive Thru Service Manual
© 2006-2013, IMI Cornelius Inc. - 25 - Publication Number: 621057419SER
DIAGNOSTICS GUIDE FOR THE MAIN CONTROL BOARD
NOTE: Refer to Figure 23.
MOTOR REMOVAL
NOTE: Apply anti-seizing lubricant to the
threads of mounting bolts when service
is required.
Figure 28.
State
Observed State
of Red LED
Sensor Input Control Response Service Remedy
0 Flash rate 3
seconds
Both probes read “wet” Standby mode. Pump =
OFF
No service required
1 Flash rate
1/2 second
Pump is OFF and HIGH probe
reads “dry” and LOW probe
reads “wet”
Waiting for level to drop
below LOW probe.
Pump = OFF
No service required
2 Flash rate
1/2 second
Both HIGH and LOW probes
read “dry”
Normal mode.
Pump = ON
No service required
3 Flash rate
1/2 second
Entered when HIGH probe
does not detect liquid, and
LOW probe does detect liquid,
and pump is ON
Normal mode.
Pump = ON
No service required
4 Flash rate 1
second
Entered when HIGH probe
reads “wet” and LOW probe
reads “dry”
This is an error
condition.
- Check electrical
connections at the
carbonator tank, and at
connector J4 on the main
control board
- Black wire should be
connected to the LOW probe
and also to Pin 4 of
Connector J4
- Reverse the connections if
incorrect
- Replace harness if
necessary
5ON
continuously, but
“flickers” every 3
seconds
Poor signal connection to the
carbonator tank. May result in
short cycling of the carbonator
pump.
Able to continue to
function but carbonator
pump short-cycles.
Pump will come on
each time a drink is
drawn. THIS
SITUATION SHOULD
BE CORRECTED.
Check the harness
connections of the red signal
wire at both ends:
1) at the carbonator ring
terminal and
2) at Pin 5 of the J4
connector at the main
control board
6 ON continuously Entered when pump has run
continuously for 5 minutes
THIS IS AN ERROR
CONDITION.
Unplug the unit and plug it
back in. This will reset the
unit's main control board and
restart the carbonator pump.