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655 2M-Z17970 Owners Manual E-Maxl Thermal Brewer
655 2M-Z17970 Owners Manual E-Maxl Thermal Brewer
TROUBLESHOOTING SUGGESTIONS
If the E-Max T goes into the error mode as outlined below, it will likely be necessary to reset the brewer
in order to test individual components. Note the reset procedure below:
• For the first four error modes, press and hold CANCEL for 3 seconds, or RE-ENERGIZE the brewer
by disconnecting from electric power for 5 seconds, then reconnecting.
• From
“VALVE FAULT”
, the brewer must be
RE-ENERGIZED
! Using the CANCEL button will not
reset the brewer from “Valve Fault”.
The Test Program will also assist in isolating and testing specific components. As an example to test
the three main components in the heater system, go to the test program and proceed to turn the “heater
on”. Use a meter or test light to determine if power is getting to and from: the triac, the high limit and the
element.
ERROR
MESSAGE
CAUSE
SUGGESTIONS FOR REMEDIAL ACTION
1 “Probe/Heater”
Error
RESET by
holding CANCEL
switch for 3
seconds
Controller has turned
heating element
on for 5 minutes
without sensing a
+2ºF change in water
temperature.
1
Temp Probe may not be connected properly, or may be defective. CHECK & CORRECT. To test probe,
go to Test Program and view probe value. A value of over 155 indicates a defective probe; a value of
under 15 indicates a bad connection of the probe to the board. With an ohmmeter measure resistance
of probe. At 212ºF, resistance is approx. 2,000W If less than 1800Wat room temperatureprobe is
2
May be boiling due to high altitude (boiling point below Brew Temp.) or Triac has failed ON and hi-limit
has interrupted power to heating element. REDUCE BREW TEMP. CHECK TRIAC; REPLACE IF
DEFECTIVE.
3
Heating element defective. CHECK ELEMENT; replace if defective.
4
Hi-limit thermostat may be cutting out at too low a temperature. CHECK HI- LIMIT THERMOSTAT;
REPLACE IF DEFECTIVE. (Note; hi-limit will reset itself if allowed to cool by 30ºF, making
troubleshooting a challenge as the brewer cools then functions normally.)
5
Heating element may be encrusted with lime or scale build-up. DELIME BREWER AS DETAILED ON
PAGE 16.
2 “Overheat” Error
RESET by
holding
CANCEL
switch
for 3 seconds
Water temperature
has exceeded
Maximum Water
Temperature
programmed into
“Machine Settings”
menu.
1
Brew Temperature may be set too close to Maximum Temperature. Brew Temperature should be at least
5ºF below Maximum Water Temperature.
LOWER BREW TEMPERATURE or RAISE MAXIMUM TEMPERATURE
(Software versions after May, 1999 enforce the 5ºF differential)
2
Triac has failed ON; element continues to heat even when controller is OFF. CHECK TRIAC; REPLACE
IF DEFECTIVE.
3
Temp Probe defective. See probe test procedure in Item #1 above. CHECK PROBE; REPLACE IF
DEFECTIVE.
3 “No Water
Sensed” Error
Inlet valve energized
but no water is
sensed during regular
operation for 60
seconds; or. no water
sensed during start-up
(manual or timed) for
4½ minutes.
1
Sleeve on water level sensor is too long, or sensor is not pushed down fully. Sensor should extend
beyond sleeve a minimum of ¼” to a maximum of l”. REMOVE TANK LID, CUT SLEEVE TO PROPER
LENGTH. ENSURE SENSOR IS PUSHED DOWN ALL THE WAY.
RESET by
holding CANCEL
switch for 3
seconds
2
Wiring to water level sensor disconnected or defective; or, sensor pulled out of tank. CHECK &
CORRECT.
3
Water level sensor may be encrusted with lime build-up. CLEAN SENSOR.
4
Water supply may be OFF. CHECK & RESTORE WATER SUPPLY.
4 Keyswitch
Locked” Error
RESET as
above
A switch on the
keypad has been held
down for more than 10
seconds.
1
Switch has been accidentally held for 10 or more seconds. RELEASE SWITCH
2
Defective keypad. PRESS & HOLD “CANCEL” FOR 3 SECONDS. Observe brewer to determine if
problem persists.
5 Valve Fault”
Error
RESET by
disconnecting/
reconnecting
electric power
Detection of a
problem with the valve
switching system, or
with the wiring to the
valves.
1
Wiring to either inlet or outlet valve not properly connected. CHECK WIRING AND CONNECTIONS.
2
The controller has two switches for each valve and one or both has been detected as failing ON.
(This prevents the brewer from operating unless both switches are working properly.) REPLACE
CONTROLLER.
