A Photon warm air heater will attempt to ignite three(3) times before going into lock out. Please see the Photon Installation Manual (https://www.reznor.co.uk/wp-content/uploads/2025/05/Reznor-Photon-Installation-Manual-EN-2025-05-D301310-Iss-6.pdf) for more information.
How many ignitions attempts before the heater goes into lockout on the Photon?
Information on Reznor's range of warm air heaters