Met with Maria to perform repairs on her Navien condensing boiler. I replaced the gas valve, restored power to the unit and purged the gas line. I fired up the boiler and it would not start. I called Navien to assist in troubleshooting shooting, it was determined that a new circuit board was needed as well. I called around and was able to locate the part. I spoke with FraBar to make arrangements and confirm pricing. I quoted the price to Maria and she agreed to move forward with the repair. The gas valve replacement was completed.