Grindmaster LCD2-1 & LCD2-3, Problem, Possible Cause, Solution, Troubleshooting Guide

LCD2-1 & LCD2-3

The following procedures must be performed by a qualified service technician.

TROUBLESHOOTING GUIDE

Problem	Possible Cause		Solution
No hot water from dispense head	•	Door is open (An interlock switch disables	•	Ensure door is latched closed. Reset
		the dispense and fill circuits when the door		power to machine to ensure fill circuit
		is open)		watchdog timer is reset
	•	Faulty thermistor	•	Consult factory for assistance
	•	Faulty water tank heater	•	Check for open heater and replace if
				necessary
	•	Fill circuit watchdog timer has tripped	•	Ensure water supply to machine is on and
				reset power to machine. Green Ready
				light off indicates heater is activated and
				tank is heating
	•	Water switch is in “OFF” position	•	Ensure switch is in “ON” position
	•	Water supply to machine is turned off	•	Ensure water supply is on then reset
	•	Check for flashing diagnostic lights on		power to the machine to reset the fill
		control board		circuit watchdog timer
No concentrate is dispensed	•	Concentrate switch is in “OFF” position	•	Ensure switch is in “ON” position
	•	Bag-in-box is empty	•	Ensure bag-in-box is not empty; replace
				with new bag-in-box if empty
	•	Bag-in-box connector is pointing up (This	•	Position bag-in-box with connector
		position can create a partial vacuum in the		pointing down to provide a positive
		concentrate tube which may prevent product		pressure in the concentrate tube
		from being pumped to the dispense spout)
	•	Concentrate pickup tube is kinked	•	Inspect tubing routing and ensure
				concentrate tubing is not kinked
	•	Concentrate pump tubing is clogged	•	Periodically clean and sanitize tubing per
				the Cleaning and Sanitizing procedure
				section in this instruction manual
Machine does not dispense or fill	•	Transformer is blown	•	(Refer to Control Diagnostic diagram)
				Check if green LED on control board is
				illuminated when machine is powered on.
				Green LED indicates that control is
				receiving proper supply voltage from
				transformer. Replace transformer if
				LED does not illuminate.
	•	Blown fuse on controller	•	Check fuse and replace if necessary
Water is cold when dispensed	•	Fill circuit watchdog timer has been activated	•	Ensure water supply to machine is on
				and reset power to machine to reset
				watchdog timer
	•	Faulty thermistor	•	Check if Red “Therm/Fail” LED is
				illuminated. Replace thermistor if LED
				is illuminated.
	•	Faulty water tank heater	•	Check for “open” heater and replace
				if necessary
Drink is too weak or strong			• Refer to Drink Strength Adjustment
				section
Drink is too hot or cold			•	Refer to Thermostat Adjustment
				section
Off taste of coffee	•	Poor water quality, to include high chlorine	• Addition of a taste and odor filter to
		level, heavy mineral concentration or stale		incoming water
		water	•	Drain water from tank, remove and
				delime. If necessary, flush tank with
				fresh water.

If you still need help, call our service department at (800) 695-4500 (USA & Canada only) or (502) 425-4776 (Monday through Friday, 8 am - 8 pm EST) or an authorized service center in your area. Please have the model and serial numbers ready so that accurate information may be given.

Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.