Grindmaster LCD-2A, LCD-2R instruction manual Water Continues to Drip from Dispense Spout

Troubleshooting Guide (cont.)

Problem/Cause Remedy

LCD DISPLAY INDICATES “OVERFLOW”

NOTE: Water must be drained from the tank below the float switch after the fault condition is diagnosed.

Water level probe sensitivity is set too low	Increase sensitivity of water fill circuit (see programming notes:
	Water Level Trip)
Faulty or corroded level probe	Remove level probe and grommet. Remove any scale or miner-
	al buildup and reassemble.
Faulty level control circuit wiring	Ensure both probe and probe ground connections are securely
	fastened to water tank top. Check wiring for defects.
Inlet water pressure too high	Ensure water pressure is below 100 psi
Weeping water inlet valve	Check water inlet valve; replace if necessary (Note: a slow
	overflow indicates this condition)
WATER TANK BOILS
Temperature setting too high for elevation of installation	Adjust temperature down, refer to temperature adjustment in
	Operators Manual.
Heater contactor stuck in closed position	Check contactor for welded contacts; replace if necessary
Defective thermistor	Check for flashing diagnostic lights on control board and refer
	to explanation of diagnostic LEDs
WATER CONTINUES TO DRIP FROM DISPENSE SPOUT
Weeping dispense valve	Replace dump valve
CONCENTRATE CONTINUES TO DRIP FROM DISPENSE SPOUT
Peristaltic pump tube is worn out	Call for service.
Incorrect tubing installed	Confirm that tubing is OEM part; replace if necessary
DRINK IS TOO WEAK OR STRONG
Mix ratio needs adjustment	Refer to “Setup” section of programming guide to alter Coffee
	and Decaf ratios.
Blocked pump and delivery tubing (too weak)	Follow cleaning instructions to prevent restrictions inside pump
	tubing
Pump tubing is worn out (too weak)	Replace tubing on an as-needed basis depending on usage

DRINK IS TOO HOT OR COLD

Refer to “Setup” section of programming guide to alter water tank temperature.

	Consider providing hot water to the supply inlet to maximize
Heavy usage	recovery
	Consider having the machine converted to 240V operation for
	maximum recovery time
OFF TASTE OF COFFEE
Machine needs cleaning	Follow cleaning instructions to ensure concentrate delivery
	tubing is clean
Poor water quality to include high chlorine level, heavy mineral	Install a taste and odor filter to the water inlet of the machine.
concentration, or stale water.
Water tank requires descaling.	Drain water from tank, remove tank, remove tank and de-scale,
	thoroughly rinse tank before re-installing. Flush tank with fresh
	water several times before replacing in service.
Out of date coffee concentrate	Check date stamp on product container

Page 18 Model LCD-2R and LCD-2A