Replacement Parts Diagram for Hayward H-Series H300FDN Heater
Replacement Parts Diagram for Hayward H-Series H300FDN Heater with Clickable Hotspots for Thermistors, Fuses, Transformers, and Electrical Panel Components
Use the diagram above to pinpoint key replacement parts for your H300FDN heater, then browse the listings below for electrical parts, sensors, and control assemblies—all with best local pricing.
The FDXLFWP1930 Field Wiring Panel is essential for securing and organizing electrical connections inside H-Series Low NOx heaters.
Step down incoming voltage with the IDXL2TRF1930 Transformer, converting 120/240V power to 24Vac for safe control board operation.
Protect sensitive components with the FDXLFSK1930 Fuse Service Kit, made for both H-Series and HC-Series heater models.
The SPX4000FG Drain Plug with O-Ring fits Universal H-Series heaters and select Hayward pumps to prevent leaks during winterization or maintenance.
Maintain accurate temperature monitoring with the FDXLTER1930 Thermistor, compatible with Universal H-Series FD heaters.
Replace a non-functional keypad with the FDXLBKP1930 Bezel & Keypad Assembly, offering a user-friendly interface for adjusting heater settings.
All Hayward H300FDN heater parts shown in this diagram are in stock with the best local pricing on fuses, wiring kits, and essential electrical components.