Hayward Universal H-Series 250K BTU (Natural Gas)
HeaterModel: W3H250FDN
250,000 BTU natural gas pool heater. Low NOx emissions. Cupro-Nickel heat exchanger for salt pools.
Specifications
| btu | 250,000 |
| fuel | Natural Gas |
| heat exchanger | Cupro-Nickel |
Common Replacement Parts
| Part Number | Name | Category | Notes | Shop |
|---|---|---|---|---|
| FDXLGSV0001 | Gas Valve | valve | LICENSED GAS TECH ONLY. Replace if heater won't ignite after verifying igniter. | Search in Shop |
| FDXLICB1930 | Integrated Control Board | board | Main control board. Replace if heater shows erratic behavior or error codes. | Search in Shop |
| FDXLHLI1930 | H-Series Igniter | igniter | Hot surface igniter. Common failure — check with multimeter (should read 40-90 ohms). | Search in Shop |
Troubleshooting
Heater won't ignite
Possible Causes
- Bad igniter
- Gas valve failure
- No gas supply
How to Fix
Check igniter ohms (FDXLHLI1930). Verify gas is on. NEVER attempt gas valve work without license — call us.
Heater fires then shuts off
Possible Causes
- Pressure switch issue
- Low flow
- Dirty filter
How to Fix
Clean filter first. Check pressure switch. Verify pump is running at adequate speed.
Schematic & Parts
Schematic Coming Soon
We're working on adding an exploded parts diagram for this model.
Need this part?
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