Teledyne Laars PNCH 0500 PNCH 0750 PNCH 1000 PNCH 1250 PNCH 1500 PNCH 1750 PNCH 2000 PNCV 0500 PNCV 0750 PNCV 1000 E2105500 Diagnostic Board

Laars Diagnostic BoardA diagnostic panel, that includes test points, as well as diagnostic lights, is provided in the control module. It is located on the right side of the module, behind the display. To access, remove the retaining screws from the display cover panel and remove it. Grasp the control module at its base and pull it outwardThe amber “Ready” light on the front panel indicates that the control system is energized....

The amber “Ready” light on the front panel indicates that the control system is energized. Upon a call for heat from the pool temperature control, the green “Heat” indicator on the front panel will light.The green “Pump” indicator on the front panel will light.Once the water flow switch makes, and if all of the safety interlocks are closed, the ignition module(s) will energize the blower(s) for a 15-second pre-purge, followed by a 20-second period to allow the ignitor(s) to heat.Energizing the blower pressurizes the air box (which supplies air to the burners) and closes the normally-open contact(s) of the airflow pressure switch(es). This allows the ignition module to proceed with the ignition sequence.

The Laars Pennant, Diagnostic Board is the termination point for many wiring harness, P1 thru P10. Contact Parts4heating 781-245-1007 for the correct wiring harness for your Pennant.