Grindmaster 20H, 21H Factory/Field Test Menu, Step Function Operation Description

Factory/Field Test Menu

This menu is intended to check product functionality both at the end of the factory line and in the field. This mode is entered by pressing and holding the DOWN key on the display board and Full/Half key on the keypad for

10 seconds. Once the menu is entered, the unit will start with an LED test that lights all LEDs and segments on the display. Navigation is done just like the User Menu. Refer to the table below for operation. Field Test Mode exits after stepping through all modes only – there is not a timeout.

Step	Function	Operation	Description
1	LED Test	All LEDs ON	Verify that all LEDs turn on.
2	Firmware Version	Display firmware version	Shows the software version of the control.
3	Date Code	Display date code/serial ID	Not used with Grind’n Brew®
4	Non Resetable Bean	Scroll non-resetable bean counter	Shows the total number of seconds the
	Counter		grinder has been grinding (non-resetable)
5	Configuration Inputs	Each digit of the display corresponds to a	Highest Digit (left most):
		configuration input. The input is either	“1” - Double Hopper;
		“0” - disabled or “1” - enabled.	“0” - Single Hopper
			Middle Digit (center):
			“1” - Always show bean count;
			“0” - Don’t show bean count
			Lowest Digit (right most):
			“1” - Grind’n Brew® Model;
			“0” - Grind Only Model
6	Display Water	Show averaged A/D reading of temperature	Show the current temperature in °F of the
	Temperature		thermistor
7	Display Water Level 1	Show averaged A/D reading of water level 1	If > 500 water level full,
			If < 500 water level not full
8	Display Water Level 2	Show averaged A/D reading of water level 2	Not used with Grind’n Brew®
9	Show Input	Display scrolls “InPut”	Input Test Mode
10	Input Test	Press each key and the display will show a	Hopper Button: 12
		number related to that key	Size Button: 10
			Grind/Brew Button: 8
			Down Button: 0
			Up Button: 2
			Start Switch: 16
			Basket Out Switch: 17
			Select Button: advances Factory Test to
			Step 11
11	Show Output	Display scrolls “outPut”	Output Test Mode
12	Output Test	Turns on each relay separately. Displays	Scroll through relay outputs with the UP
		“O##“ where:	and DOWN keys. Outputs are as follows:
		## = 2 digit output number
			O01: Fill Valve
		IMPORTANT: Each output will be turned	O02: Brew Valve
		ON when its number is on the display	O03: Grind Shutter
		REGARDLESS of temperature or fill	O04: Left Auger Motor
		level. Be CAREFUL not to overfill the	O05: Right Auger Motor
		tank and keep electric items out of the	O06: not used
		way of the brew channel.	O07: Heater
			O08: Grinder Motor
			O09: Basket Out Light
			O10: Ready Light

Grind’n Brew® Coffee Systems Page 11