Coffee Brewers
Grindmaster
®
19
Troubleshooting Guide (continued)
Heating problems (continued)
PROBLEM
POSSIBLE CAUSE
SERVICE CHECK
SOLUTION
Water tank does not
•
Solid state relay is not
•
Check to ensure SSR
•
Tighten retaining screw
heat but display
secured to bottom of
is secured to bottom
snug but not over-
indicates “heating”
tank properly
of tank properly for
tightened
(continued)
proper heat sinking
to the tank
•
Tank water level is too
•
Check if water level
•
Resolve water level
low which is disabling
circuit is functioning
circuit issue if machine is
heating circuit
properly by
not refilling properly
dispensing water
from the hot water
tap into an
appropriate
container
•
Faulty heating element
•
Check for voltage
•
Replace heating element
across heating
if needed
element
•
Hi-limit temperature
•
Press reset button on
•
Tripping of the hi-limit
switch has tripped
hi-limit switch
switch indicates a fault
located on top of the
condition. Monitor
hot water tank
machine to determine
root cause of tripping of
the hi-limit switch
•
Control board
•
Reset power to
•
If resetting power
watchdog timer has
machine by powering
resolves the issue,
tripped to protect the
down from power
monitor machine to
machine from filling or
switch on back of
determine root cause.
heating errors
machine
Intermittent loss of
water supply (i.e. facility
maintenance) can cause
nuisance tripping of the
watchdog timer
•
Heater terminal screws
•
Check heater
•
Tighten screws while
are loose
terminal screws for
supporting screw tab to
tightness
prevent torqueing of the
heater cold pin to
prevent damage to the
heater
•
Faulty control board
•
Perform all other
•
Replace control board
checks
only if all other checks
are determined OK
WARNING:
To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.
