Grindmaster LIQUID COFFEE DISPENSER LCD-2A - Manual (Page 11)

Page 11 Model LCD-2R and LCD-2A
“Engineer” Program Settings
TO BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN ONLY
Machine Fault Codes (cont.)
6: Water overheat
The thermistor has detected the water is too hot. The boiler element contactor may have failed short circuit. The
machine may be running high Wattage Power with a preheater.
7: Leak
If the machine refills 15 times without a dispense the machine assumes a leak. A water outlet valve may be leaking.
8: Inlet valve leak
Not available with single inlet valve machines
9: Tank thermistor fail
The thermistor has failed open circuit, or connections from the thermistor to the PCB may have failed.
10: Reset System
The watchdog timer on the control chip has timed out, the machine needs a reset. (Turn machine off, wait 5 sec-
onds, turn back on).
Programming Guide for Calibration of Mix Ratio (refer to Figure D)
Figure D
1. The water dump valves are factory set to
60 ml/sec (2 fl-ounces per second). If
adjustment is required, disconnect power to
the machine and remove the left side
access plate to gain access to the dump
valves.
2. Using an appropriate hex key, turn the
adjustment screw on each dump valve
clockwise to fully close the adjustor (Do not
force the adjustment as permanent damage
can occur to the valve)
3. Turn each dump valve adjustor counter
clockwise as indicated below to achieve
(2) fl-ounce per second.
Top valve =
Left dispense head= 5.5 turns out CCW
Middle valve=
Middle dispense head= 4.5 turns out CCW
Bottom valve =
Right dispense head= 4.0 turns out CCW
4. Reassemble machine and power ON.