EGG STATION (ES-600 & ES-1200)
12
P/N 1010883 08/05 Rev. A
TROUBLESHOOTING (continued)
Control Board LEDs
The control Board has three on board LEDs (Figure
5) to determine the status of the unit and to assist in
troubleshooting.
Green (Diagnostic)
: This LED should be off in normal
operation, if any of the 5 potential faults are detected by
the Control Board, this LED will repeatedly blink either 1
through 5 times with a 2 second pause in between (see
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 with
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(+)4(-) of the Solid State Relay. When off,
this LED indicates that the grill platen is up to operating
temperature and satisfied.
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 diagnos-
tic purposes. When the green LED on the Solid
State Relay is on, it means that the Control Board is
calling 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.
Green LED Blink Codes
Number of Blinks
Cause(s)
Unit’s State and Resolution
The Green LED blinks
on and off 1 time, paus-
es for 2 seconds, and
repeats
The EEPROM memory on the Control
Board is corrupted.
In this state, the unit turns off the control Signal to the Solid
State Relay and disables all front buttons and lights. The
unit will not heat up. This continues until the defaults are
reloaded into memory. To reload defaults, turn the unit
off, press and hold the Time 2 button, turn the unit on, and
release the button.
The Green LED blinks
on and off 2 times,
pauses for 2 seconds,
and repeats.
The ambient temperature within the
control compartment has exceeded
155º F (68º C). Verify that there is
proper air ventilation all around the unit
and that it is not near a significant heat
source.
In this state, the unit turns off the control signal to the Solid
State Relay and disables all front buttons and lights. The
unit will not heat up. This continues until the ambient tem-
perature within the electrical compartment drops below 140
F (60 C) and the unit is turned off and back on.
The Green LED blinks
on and off 3 times,
pauses for 2 seconds,
and repeats.
Open or disconnected Thermocouple.
In this state, the unit turns off the control signal to the Solid
State Relay and disables all front buttons and lights. The
unit will not heat up. This continues until the Thermocouple
is reconnected or replaced, and the unit is turned off and
back on.
The Green LED blinks
on and off 4 times,
pauses for 2 seconds,
and repeats.
The supply voltage to the unit is below
160 VAC or above 265 VAC.
In this state, the unit turns off the control signal to the Solid
State Relay and disables all front buttons and lights. The
unit will not heat up. This continues until the supply voltage
is within the proper limits and the unit has been turned off
and back on.
The Green LED blinks
on and off 5 times,
pauses for 2 seconds,
and repeats.
The 50/60 Hz signal has been lost
due to a disconnected or an open
wire harness/wiring on the AC Isolator
Board, or from the AC Isolator Board to
the Control Board.
In this state, the unit turns off the control signal to the Solid
State Relay and disables all front buttons and lights. The
unit will not heat up. This continues until the 50/60 Hz sig-
nal is reapplied and the unit is turned off and back on.
YELL
HEAT
RED
GRN
B
U
Z
Z
STATUS
C
R
4
C
R
6
C
R
5
Green
Yellow
Red
Figure 5. Control Board
LEDs
Figure 6. Solid State
Relay
R
PRODUCT SERVICE
TUV
.
gapruit
Bauart
Crouzet
GN
84137220
4/A2-
3-32 VDC
+3/A1
1/L1
2/T1
50 AMP 24-280 VAC
Solid State
Relay
LED
