Bunn ES2C Coffeemaker User Manual


 
BUNN Espress
®
ES•2C
13
TROUBLESHOOTING
PROBLEM PROBABLE CAUSE REMEDY
Will not brew when any of the
batch buttons is pressed.
(Continuous brew works as
well as automatic refill.)
Water is not hot or long re-
covery time.
Flowmeter
Solenoid valve
Pump
Solenoid valve
Limit thermostat(s)
Tank heater
Check connections between the
flowmeter and electronic control unit.
Replace flowmeter.
Check voltage at terminals. If voltage is
present when the dose switch is pressed,
disconnect power supply, remove wires
from coil terminals and check coil ter-
minal continuity. If there is continuity
replace solenoid.
When start switch is pressed, pump
should turn on immediately. If this
does not happen, check voltage at ter-
minal block on the pump. If correct
voltage is present, use a flat-blade
screwdriver to turn the motor shaft on
the rear end of the motor to see if the
pump is locked. If the shaft does not
turn, replace pump assembly.
Remove the solenoid valve and clear it
of any obstructions. Rebuild or replace
the valve if necessary.
Disconnect power supply , remove all
wires check across limit terminals for
continuity. If no continuity, replace
limit thermostat(s).
Check tank heater terminals for correct
voltage. If voltage is present and ma-
chine is not heating properly, replace
tank heater.