Replacement Hot Surface Ignition Board works with all liquid propane or natural gas LB White Guardian HSI model heaters.
For use with these Guardian and Smart heater models:
- Guardian AW060
- Guardian AW100
- Guardian AW250
- AB200CH
- AWO75EH
- AW215CH
- AW230EH
- AW230FH
- AW325BH
- AW250 Smart Sense