38 NPE Service Manual
4.7.7 Button
Button
Description or
name
Diagnostic Reset Power Information Plus Minus
Short Key Function Remark
[Diagnostic] short key Display of information for service
[INFO] short key Display/confirmation of information for consumers
[RESET] short key Error code release/reset
[PLUS] short key Item movement/UP
[MINUS] short key Item movement/DOWN
Long Key combination Function Remark
[POWER] long key(1 sec) Power ON/OFF
[INFO] long key(2 sec) Error history display
Must be in Normal mode or Error
Display mode
[RESET] long key(5 sec) Individual deletion of Error History /Tech Data Works only at the relevant mode
[Diagnostic] long key(5 sec) Advancement into Test Menu Must be in Normal mode
[Diagnostic] long key(10 sec) Version display Power turned OFF
[PLUS] + [MINUS] long key (10 sec) High temperature water setting/release(NPE-240A only)
Allows temperature settings
above 140°F (60°C)
[Diagnostic]+[PLUS] long key(5 sec) Cascade: assigns master unit and completes set-up Possible at Normal mode
[Diagnostic]+[MINUS] long
key(2 sec)
Cascade: assigns slave unit
[Diagnostic]+[RESET] long
key(5 sec)
Cancels cascade operation (from master unit) / removes
individual slave unit from cascade system
Possible at Normal mode with
Cascade operation activated
[Diagnostic]+[POWER] long
key(5 sec)
Cascade system power ALL ON/OFF
Possible only at Master, and
possible only with power turned
OFF or at a Normal Operation
condition
[Diagnostic]+[PLUS]+[RESET]+[PO
WER] long key(5 sec)
Factory reset
Possible only with power turned
OFF
* While buttons are being pressed on the front panel, the keypad will remain lit to its maximum brightness. After pressing a button, the keypad will dim to
medium brightness for 5 seconds, then dim to minimum brightness for 5-10 seconds and then completely turn OFF 10 seconds later.
* Button entries are recognized after pressing for a short period (50msec) and then releasing.
* If a button is pressed and held for a longer time as specified in the above chart, it will be recognized as a “long key” function.
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