Accu-Steam™ G2 Gas Service Manual
14
SP8042-1911
Unplug griddle from wall receptacle before replacing the
control board in order to prevent damage to equipment.
When power is applied to the control, the control will configure itself to operate in accordance
with the parameters stored in memory. These parameters may be adjusted using Manager’s Mode.
Operating Mode
When power is applied to the control, the control will configure itself to operate in accordance
with the parameters stored in memory. These parameters may be adjusted using Manager’s Mode.
Reset
Pressing and holding the
DOWN
(S4) arrow key and the
ON/OFF
(S5) key for five seconds will reset
the software back to the factory default settings.
Error Codes
The control will display error codes for the following conditions:
E001 Displays when controller detects an Open Sensor
E002 Displays when controller detects a Shorted Sensor
9999 No calibration data stored or invalid calibration data detected
To reset from any error, unit must be turned OFF, repaired, and then turned ON.
When any error is displayed, outputs are forced open. The following section illustrates the
programming logic and program level indication:
5. Digital Controller
5.1 Operation
Fig 5.A
H
Heat light
not on
• If griddle is warming up or regulating at a set point, replace indicator
lamp.
• If griddle is not warming up or regulating at a set point, check to see if
temp demand control relay (24VDC) relay is engaged.
• If control relay is not engaged, check for 24VDC at terminals 7 & 8 from
temperature controller.
• If voltage is at relay coil, replace relay.
• If voltage is not at relay coil, replace temperature controller.
• If ice cube relay is engaged, check for poor connections or broken wires.
Blue wires coming from ignition module or brown wire coming from OT
thermostat.
• If connections are good, replace relay.
I
Unit not
heating up
• Check for 24 VAC to the gas valve.
• If no voltage to the main gas valve check for poor or loose connections
or broken red wire between the “heat” lamp and the gas valve.
• If there is voltage to the red wire of the main gas valve, check for voltage
at the brown wire of the gas valve.
• If there is 24VAC to the brown wire at the pilot gas valve and the pilot
valve has not turned on, replace the gas valve.
• If there is 24VAC to the brown wire at the pilot gas valve and the valve has
turned on, check for proper gas supply and pressures.
• If there is no 24VAC on the brown wire at the pilot gas valve, check for
poor or loose connections or broken brown wire at the gas valve, the
“OT” indicator lamp and the OT thermostat and the demand relay. Repair
as necessary.
J
Inaccurate
Temperature
• If display temperature is greater than 50 degrees different than
measurement device, verify measurement device. If measurement device
appears to be accurate, measure RTD.
• If RTD measures normally, replace temperature controller.
• If RTD measures out of specifications (temp/resistance), replace RTD.
Summary of Contents for Accu-Steam G2 Series
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