27-November-13 Phone: 1.800.325.7867 Fax: 1.636.925.0029 www.newcocoffee.com
19
Error Messages:
Error
Number
Description
Cause
What to Check
tHU/ tHL
Thermistor warning – immediately upon
detection the machine will beep twice and
show the warning message for a minute as
well as turn on the right most upper dot on
the display. This dot will stay on to signify
there is a thermistor out. Also upon power
up the machine will beep twice and show
the warning message for a short period of
time and turn on the high dot if the warning
conditions are present
Resistance extremely high from upper or
lower thermistor will cause or the resistance
extremely low from upper or lower thermistor
will cause a tHU or tHL warning for the
thermistor that sees the condition and causes
the control board to switch from watching the
lower to the upper thermistor. If both the
upper and lower resisters fail then we flag a
thermistor ErC error
This warns you that 1 thermistor has
failed. Nothing is required at this time as
the upper thermistor has taken over but
ordering a replacement thermistor is
advisable
Er3
Heater Run Error
Water did not heat within timeout period.
Timeout period is 240 seconds which is
reloaded whenever the heater is off or the fill
valve is on
Check element for short and proper
resistance. Replace if bad.
Er4
Tank Fill Error
Water did not reach probe in timeout period of
6 minutes for initial fill and 1 minute during
normal operation. The 6 minute fill time is
reloaded if no key is pressed within 24 hours
Check valve function and flow rate.
Replace valve or increase flow rate.
Check probes for excess scale.
Er5
Comm Error
Serial communication error to/from non-
volatile memory (EEPROM).
Hold down the enter key to enter
Machine Set up mode pressing the enter
key to cycle through all options then exit
mode. This resets all the defaults. If the
error still occurs then replace main
board.
Er7
Open Motor Circuit - The motor errors (Er7
and Er8) do not cause a system error and
will not shut down the machine.
Immediately upon detection the machine
will beep twice and show the error
message. Every time the key is pressed to
activate a dispense motor it clears the error
and allow another attempt to be made. If
this error occurs the dump valve still will
release water.
Open motor circuit. Pump 0 or pump 1.
Retry pump if the error still occurs then
check harness/motor continuity. Replace
if defective.
