Grindmaster LCD-2R, LCD-2A instruction manual Problem/Cause Remedy, Machine does not Power UP

Troubleshooting Guide (cont.)

WARNING:

Risk of electrical shock. Disconnect power before removal of any machine access panels.

Problem/Cause	Remedy
MACHINE DOES NOT POWER UP
Machine is unplugged	Ensure machine is plugged into power supply
Power switch in OFF position	Flip power switch to “ON” position (located at lower right corner
	of back of machine); Blue LCD on door should be illuminated
	when ON.
Branch circuit breaker has tripped	Reset circuit breaker at service supply panel
Power supply external fuse is blown	Check and replace fuse if necessary (located behind lower right
	side chassis access panel).
NO HOT WATER FROM DISPENSE HEAD
Faulty water tank heater	Check heating element resistance; replace if necessary.
Water Fill circuit “watch dog timer” has tripped	Turn power switch “OFF” for 5 seconds, then “ON” (located at
	lower right corner of back of machine)
Water supply to machine is turned OFF
Check for flashing diagnostic lights on control board	See diagram of control for explanation of lights.
Level probe sensitivity is too high
Water is disabled in programming	Check “Engineer” programming to ensure water is enabled.
NO CONCENTRATE IS DISPENSED
Bag-in-Box is empty or disconnected	Ensure Bag-in-Box is not empty; replace with new Bag-in-Box if
	empty.
Bag-in-Box connector is pointing up. (This position can create a	Position Bag-in-Box connector pointing down to provide a
partial vacuum in the concentrate tube which may prevent	positive pressure in the concentrate tube.
product 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, product out switch, or Bag-in-Box	Periodically clean and sanitize tubing per the cleaning and
fitting is clogged.	sanitizing procedure in the instruction manual.
“Coffee” is disabled in programming.	Check “Engineer” programming to ensure “Coffee” is enabled.
WATER TANK OVERFLOWS THROUGH TANK VENT AT BOTTOM OF MACHINE
Weeping fill valve seat	Call for service.

WATER TANK OVERFLOWS THROUGH TANK VENT AT BOTTOM OF MACHINE

Note: A secondary float switch located in the water tank is intended to indicate an overflow condition at the LCD display.

Weeping water inlet valve	Check water inlet valve; replace if necessary. (Note: a slow
	overflow indicated this condition.)

Page 17 Model LCD-2R and LCD-2A