Grindmaster American Metal Ware LCD2-1 Operation And Instruction Manual page 11

Troubleshooting Guide (cont.)
Problem/Cause
Water tank overflows through tank vent at
bottom of machine
• Faulty or corroded level probe
• Faulty level control circuit wiring
• Faulty control board
• Inlet water pressure too high
Water tank boils
• Temperature setting too high for elevation
of installation
• Heater contactor stuck in closed position
• Faulty control
• Faulty thermistor
Water is cold when dispensed
• Fill circuit watchdog timer has been
activated
• Faulty thermistor
• Faulty water tank heater
Drink is too weak or strong
Drink is too hot or cold
Off taste of coffee
If you still need help, call our service department at (800) 695-4500 (Monday through Friday, 8 am - 6 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.
American Metal Ware Liquid Coffee Dispenser
Remedy
• Remove probe and remove any scale or mineral
buildup and reinstall in water tank grommet
• Ensure both probe ground connections are
securely fastened to water tank top
• Consult factory for help, replace control if neces-
sary
• Ensure water pressure is below 100 psi
• Adjust temperature down, refer to Thermostat
Adjustment Section in installation manual
• Check if green Ready light on front of machine is
on when machine is boiling. Ready light on indi-
cates that the control has deactivated the heater
circuit. Replace contactor if machine boils with
Ready light on.
• Ensure that Ready light is off when machine boils
and that that machine does not respond to
temperature adjustment downward. Consult factory
for assistance.
• Consult factory for assistance
• Ensure water supply to machine is on and reset
power to machine to reset watchdog timer
• Check if Red "Therm/Fail" LED is illuminated.
Replace thermistor if LED is illuminated
• Check for "open" heater and replace if necessary
• Refer to Drink Strength Adjustment section
• Refer to Thermostat Adjustment section
• Poor water quality, to include high chlorine level,
heavy mineral concentration or stale water
• Addition of a taste and odor filter to incoming water
• Drain water from tank, remove and delime. If
necessary, flush tank with fresh water.
Page 11