Antunes, AJ 9300570 TROUBLESHOOTING continued, EGG STATION ES-600 & ES-1200, Control Board LEDs

EGG STATION (ES-600 & ES-1200)

TROUBLESHOOTING (continued)

Control Board LEDs

The Control Board has three onboard LEDs (Figure

5)to determine the status of the unit and to assist in troubleshooting.

Green (Diagnostic): The LED should be off in normal operation however, if any of the 5 potential faults are detected by the Control Board, this LED will repeatedly

Green

Yellow

Red

STATUS

GRN	CR4
YELL	CR5
RED	CR6

HEAT

BUZZ

Solid State

Relay

LED

50 AMP 24-280 VAC

1/L12/T1

Crouzet

TUV

	GN
	84137220
4/A2-	+3/A1
	3-32 VDC

blink either 1 through 5 times with a 2 second pause in between (refer to the Green LED Blink Codes section below).

Yellow (Audio): When lit, This LED indicates that the Control Board is supplying approximately 10-15 VDC to the audio signal. The audio signal should sound when this LED is lit.

Red (Heat): When lit, this LED indicates that the Control Board is calling for heat by supplying VDC to terminals 3(+) and 4(-) of the Solid State Relay. When off, it means that the grill platen is up to operating tem- perature and satisfied

Green LED Blink Codes

Figure 5. Control Board	Figure 6. Solid State
LEDs	Relay

NOTE: During heat mode, this Red LED is very dim, so it may be difficult to verify if the Control Board is, or is not, calling for heat. It is recommended that you observe the small round green LED on the Solid State Relay (Figure 6)for mode and diagnostic purposes. When the green LED on the Solid State Relay is on, it means that the Control Board is call- ing for heat. When off, it means that the Control Board is NOT calling for heat. Typically, the VDC at the Solid State Relay will be less than 1.0 VDC when measured, but may vary because of different quality VOMs. Therefore, it is recommended that you DO NOT attempt to measure the VDC at the Solid State Relay for diagnostic purposes.

Control Board	Unit State	Condition
LED Activity
The Green LED	The EEPROM memory on the Control	In this state, the unit turns off the control signal to the solid
blinks on and off	Board is corrupted.	state relay and disables all front buttons and lights. The unit
1 time, pauses for		will not heat up. This continues until the defaults are reloaded
2 seconds, and		into memory. To reload the defaults, turn the unit off, press and
repeats		hold the Time 2 button, turn the unit back on, and release the
		button.
The Green LED	The ambient temperature within the	In this state, the unit turns off the control signal to the solid
blinks on and off	control compartment has exceeded 155º	state relay and disables all front buttons and lights. The unit
2 times, pauses	F (68º C). Verify that there is proper air	will not heat up. This continues until the ambient temperature
for 2 seconds, and	ventilation all around the unit and that it	within the electrical compartment drops below 140º F (60º C)
repeats.	is not near a significant heat source.	and the unit is turned off and back on.
The Green LED	Open or disconnected Thermocouple.	In this state, the unit turns off the control signal to the Solid
blinks on and off		State Relay and disables all front buttons and lights. The unit
3 times, pauses		will not heat up. This continues until the Thermocouple is
for 2 seconds, and		reconnected or replaced, and the unit is turned off and back
repeats.		on.
The Green LED	The supply voltage to the unit is below	In this state, the unit turns off the control signal to the Solid
blinks on and off	160 VAC or above 265 VAC.	State Relay and disables all front buttons and front lights. The
4 times, pauses		unit will not heat up. This continues until the supply voltage is
for 2 seconds, and		within the proper limits and the unit is turned off and back on.
repeats.
The Green LED	The 50/60 Hz signal has been lost due	In this state, the unit turns off the control signal to the Solid
blinks on and off	to a loose, disconnected, or an open	State Relay and disables all front buttons and lights. The unit
4 times, pauses	wire harness/wiring on the AC Isolator	will not heat up. This continues until the 50/60 Hz signal is
for 2 seconds, and	Board, or from the AC Isolator Board to	reapplied and the unit is turned off and back on.
repeats.	the Control Board.
	12		P/N 1010871 Rev. D 08/05