Hayward Blower Vacuum Switch for Universal H-Series Low Nox Pool Heater FDXLBVS1930
Hayward Products
SKU: FDXLBVS1930
Hayward FDXLBVS1930 Blower Vacuum Switch for Universal H-Series Low NOx Pool Heater
The Hayward FDXLBVS1930 Blower Vacuum Switch is a genuine replacement heater safety switch used on compatible Hayward Universal H-Series Low NOx pool and spa heaters. This switch helps verify blower vacuum / air switch operation during the heater ignition sequence.
This replacement part is commonly used when troubleshooting blower vacuum switch faults, air switch closed conditions, air switch open conditions, or heater service codes related to blower operation and vacuum switch sensing.
Product Features
- Genuine Hayward replacement heater part
- Manufacturer part number: FDXLBVS1930
- Blower vacuum switch for compatible Hayward Universal H-Series Low NOx heaters
- Used in the heater blower / air proving safety circuit
- Commonly referenced during AC and AO service code troubleshooting
- Replacement part for select Hayward FD-Series heater applications
- Helps confirm proper blower vacuum switch operation during heater startup
Product Details
| Brand | Hayward |
| Part Number | FDXLBVS1930 |
| Product Type | Blower Vacuum Switch |
| Heater Series | Universal H-Series Low NOx / FD-Series |
| Application | Pool and spa gas heater blower vacuum safety circuit |
| Common Use | Replacing a failed or out-of-range blower vacuum switch |
Compatibility
- Hayward Universal H-Series Low NOx heater models requiring FDXLBVS1930
- Commonly used on H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP applications where specified
- Select Hayward H500FD applications where the parts diagram calls for FDXLBVS1930
- Select Hayward H-Series above-ground 135K heater applications where specified
- Replacement applications where the existing blower vacuum switch is marked FDXLBVS1930 or matches the heater parts diagram
Common Signs This Part May Need Replacement
- Heater displays an AC air switch closed service code
- Heater displays an AO blower / air switch service code after other causes are ruled out
- Blower vacuum switch fails a continuity test during diagnosis
- Heater blower runs but the control does not confirm proper vacuum switch operation
- Vacuum switch wiring, terminals, or switch body are damaged
- Heater will not complete the ignition sequence due to blower vacuum switch fault diagnosis
Important Notes
- This item is the blower vacuum switch only.
- Blower motor, vacuum tubing, integrated control board, wiring harness, thermistor, water pressure switch, ignitor, gas valve, and complete heater are sold separately unless otherwise stated.
- Verify the exact heater model, serial range, and parts diagram before ordering.
- This is not the same part as the water pressure switch, vent pressure switch, high limit kit, thermistor, or blower assembly.
- AC and AO service codes can be caused by wiring, blower, vacuum tubing, control board, voltage selector plug, venting, or airflow issues in addition to the vacuum switch.
- Replacing the switch alone may not correct the issue if the blower, tubing, ICB, wiring, or venting is faulty.
- Gas heater diagnosis and repair should be performed by a qualified pool heater technician.
Installation Notes
- Turn off power to the heater before service.
- Shut off the gas supply before working inside the heater cabinet.
- Allow the heater to cool completely before handling internal components.
- Label or photograph wiring connections before removing the old switch.
- Inspect the vacuum tubing for cracks, kinks, loose connections, water, debris, or damage.
- Inspect blower wiring and switch terminals before installing the replacement part.
- Do not bypass the blower vacuum switch or any heater safety device.
- After installation, confirm proper heater startup, blower operation, and service-code clearance.
- If the same service code returns, continue diagnosis using the Hayward heater troubleshooting guide.
Related Products
- Hayward FDXLBVS1930 Blower Vacuum Switch
- Hayward FDXLTER1930 H-Series Thermistor
- Hayward FDXLHLI1930 H-Series High Limit Kit
- Hayward FDXLWPS1930 H-Series Water Pressure Switch
- Hayward IDXL2TRF1930 H-Series Heater Transformer
- Hayward IDXLFLS1930 H-Series Heater Flame Sensor
- Hayward FDXLBKP1930 Bezel & Keypad Assembly Kit
- Hayward CHXTSW1930 H-Series On/Off Switch
Maintenance Tips
- Keep heater vents, blower intake areas, and surrounding equipment pad clear of debris.
- Inspect wiring and tubing during routine heater service.
- Do not ignore recurring AC, AO, IF, or other service codes.
- Maintain proper gas supply, electrical voltage, water flow, and ventilation for reliable heater operation.
- Have heater safety circuits tested by a qualified technician when fault codes repeat.
- Address water leaks, rodent damage, corrosion, or loose wiring inside the heater cabinet promptly.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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