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Control Panel
The control panel contains all the logic circuits, operator
controls, and system displays necessary to operate,
program, and protect the generator. The control panel
interprets and monitors electrical inputs from all related
circuits throughout the standby operation.
Before replacing the control panel, all other circuits must be
tested to ensure proper operation. When a failure has been
traced to the control panel, it must be replaced as a complete
assembly.
240VAC utility power is delivered from the fuses in the
transfer switch to the 2-pin connector mounted directly to the
control panel. The control panel uses internal circuits to
rectify the utility voltage to 12VDC. This is then delivered to
the positive (+) battery post through the 15 Amp fuse via Pin
#1, Wire #13. The 240VAC utility power is also used to power
the optional battery warmer and optional oil warmer.
Functions of the Control Panel:
• Battery Trickle Charge
• Set Exercise Timer (SET EXERCISE)
• Manual Start (MANUAL OVER-RIDE)
• Sensing Utility Voltage
• Automatic Start, in the event of utility failure
• Automatic Engine Cool-Down Timer
• Fault Code (FC) Detection with Automatic
Shutdown
• Fault Indication Display (LED)
• Hour Meter
Power During Control Panel Fault Conditions
When the Home Generator System experiences a fault
condition, the Automatic Transfer Switch automatically
defaults to utility power when present. This ensures that all
circuits in the home will have power until the fault is
corrected.
If the unit fails to exercise at its prescribed time, check for a
fault code on the digital display. If no fault code is shown,
perform the SET EXERCISE procedure. See Setting the
Exercise Timer.
How to Access the control panel
The control panel circuit board is mounted behind the
control panel face (A, Figure 1).
SECTION 2 - TROUBLESHOOTING
Figure 1
Figure 2
1. Open and/or remove the system control panel door.
WARNING Equipment contains high voltage that can
cause injury or death. DO NOT touch bare wires.
2. Set control panel system switch to OFF.
3. Remove the 15 Amp fuse.
4. Disconnect the negative (-) battery cable.
WARNING Battery posts, terminals, and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
5. Remove the four mounting screws (B, Figure 2), then
carefully remove and tilt down the panel to expose
the control board.
2
2
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