Description
Hayward H-Series Pool Heater Fuse Service Kit — FDXLFSK1930
The FDXLFSK1930 fuse service kit is an essential maintenance item for Hayward H-Series Low NOx pool and spa heaters. When your heater suddenly shuts down or won't power on, a blown fuse is often the culprit. This complete service kit includes the exact replacement fuses needed to get your heater running again — no service call required.
Key Features
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Complete Fuse Kit: Includes all fuses used in Hayward H-Series Low NOx heater models — one kit covers every fuse location
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OEM-Spec Ratings: Each fuse matches the original amperage and voltage ratings specified by Hayward
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Fast-Blow & Time-Delay Types: Kit includes both fast-acting fuses (for sensitive electronics) and time-delay fuses (for motor circuits)
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Clear Labeling: Each fuse is clearly marked with its rating and intended circuit for easy identification
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Cost-Effective: Far cheaper than a $150+ service call for what's often a 5-minute DIY fix
Compatibility
| Specification |
Detail |
| Part Number |
FDXLFSK1930 |
| Compatible Models |
H150FDN, H200FDN, H250FDN, H300FDN, H350FDN, H400FDN |
| Series |
Hayward H-Series Low NOx |
| Fuse Types Included |
Glass Tube & Ceramic (Fast + Time-Delay) |
Troubleshooting Guide
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Heater Won't Power On: Check main fuse first — this is the most common failure point
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Display Works But No Heat: Check control circuit fuses; a blown control fuse prevents the gas valve from opening
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Intermittent Operation: Loose or corroded fuse holder contacts — clean with contact cleaner and replace fuse
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Blower Runs But Won't Ignite: Check the ignition circuit fuse; common failure after power surges
Frequently Asked Questions
Q: Why did my fuse blow in the first place?
A: Common causes include power surges, aging components drawing excess current, moisture intrusion, or insect damage to wiring. If a new fuse blows immediately, there's an underlying electrical issue that needs diagnosis.
Q: Can I use generic fuses instead?
A: We strongly recommend using the correct amperage and type. Using a higher-rated fuse can cause fire hazards; using the wrong type (e.g., fast-blow instead of time-delay) may cause nuisance blowing.
Q: How do I know which fuse is blown?
A: Visually inspect for a broken filament inside glass fuses. For ceramic fuses, use a multimeter to test continuity. Always check with power OFF at the breaker.
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