NOTE:  This part is no longer available!  However, you can use the GSC-102 shown here.

Older versions of this board may also be marked GSC1-12

DynaGen GSC101-L-12 engine control has GSC1 label on one micro-chip and "GSC1 Controller" written on the board.  12VDC operation.


Coleman Powermate CP200 board # 026-0534 (Used in some home stand-by generator sets.  Harness & male plug not included).

NOTE: The Dynagen part # is usually written on the back side of this board on the small white bar code label.

GSC101 Autostart Controller

Portables / Residential / Light Commercial

The GSC100 Series is a low cost, full-featured autostart for small generator installations. Factory-fixed settings prevent unauthorized field tampering. The board is conformally coated to protect against the elements. The unit is supplied as a circuit card to be mounted within a customer supplied panel with appropriate labeling.

Non-Adjustable Settings

  • Crank Disconnect (20Hz)
  • Overspeed (69Hz)
  • Crank Tries (3)
  • Crank/Rest (10s)

General Fault Conditions

  • Low Oil
  • High Engine Temperature
  • Overcrank
  • Overspeed
  • Underspeed (53Hz)
  • Low Battery Voltage (11V)

Not In Auto
NOT-IN-AUTO LED will illuminate when the external AUTO/OFF/TEST switch is not in AUTO.

Failure Inputs
Close to +BAT or to Ground.

Speed Signal
Accepts up to 300VAC, 60Hz from Direct Generator Output.

Time Delay Engine Start (TDES)
Provides a delay (10s) before the engine is started.

Optional Cool-Down Period
Wire jumper (2 mins).



Operating Voltage

  • 5 to 16VDC continuous
  • Standby Current Draw: 8mA at 12VDC
  • Reverse battery protected
  • Surge withstand: 1500V for 250μS 

Operating Temperature

  • Controller Function: -40 to +85ËšC 


  • Dimensions: 4.0”H x 4.0”W x 0.47”D
  • Weight: 0.15 lb 

Speed Sensing

  • Generator Output: Up to 300VAC  (no external transformer required)

Failure Inputs

  • Low oil pressure switch failure* (closed on failure)
  • High engine temp failure* (closed on failure)

*Failure inputs can close to either +battery or ground. All failure inputs are ignored for a period of 15 seconds at engine startup.


  • - Fuel & Crank
  • - 1A relays
  • - Switched to battery positive

Short circuit & overload protection on annunciation outputs (rated 300ma max). 


  • Main control mating plug: Dual Row Plug 2x7 Molex 39-01-2140
  • Annunciator mating plug: Dual Row Plug 2x5 Molex 39-01-2100
Below are helpful downloads:

Data Sheet

GSC102 Data Sheet
467.04 KB, Uploaded: Mon, 18 Dec 2017


GSC102 User Manual R2.1
459.16 KB, Uploaded: Mon, 18 Dec 2017
App Note: GSC101 and GSC102 Differences R1.0
83.14 KB, Uploaded: Mon, 18 Dec 2017

Wiring Diagram

GSC102 Typical Wiring Diagram
242.14 KB, Uploaded: Mon, 18 Dec 2017

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  • Part #: GSC101-L-12
  • Manufactured by: Cattron