Hayward Pool Heater Pressure Switch | CHXPRS1931
Hayward Products
SKU: CHXPRS1931
Hayward CHXPRS1931 Pressure Switch
Part Number: CHXPRS1931
Description
A genuine pressure switch designed for select Hayward gas pool heaters. It monitors water flow and pressure: if the heater does not receive adequate flow, the switch will shut down the heater to prevent damage and ensure safe operation.
Compatibility & Fitment
- Compatible with Hayward CZ series heaters (150-400 models) and other gas pool heater models requiring a flow/pressure switch.
- Use when the existing pressure switch is cracked, fails to actuate, or causes the heater to lock out due to improper operation.
Features & Specifications
- Channel open line switch (flow/pressure type) for heater safety.
- Compact design with mounting threads suitable for heater combustion chamber or flow sensor mount.
- Designed to meet OEM safety standards for Hayward heater installations.
Installation Notes
Shut off power and fuel supply to the heater. Remove the existing switch, clean the mounting port, ensure proper thread seal and torque the new CHXPRS1931 switch to manufacturer specifications. Restore flow and power, then test the heater through a full cycle verifying correct operation and no fault codes.
Maintenance Tip
During the heater’s annual service, check operation of the pressure switch, inspect for adhesive corrosion or debris, and verify proper actuation. Replace the switch if you observe frequent lock-outs, failure to reset, or physical damage to ensure safe heater recovery.
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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