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Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Start with the heater’s full model number, control type, and exact status or error message, then follow the current manual for that unit. Raypak troubleshooting is model-specific: a code or repair step for one heater family may not apply to another. For owners, the safest first checks are limited to visible water circulation, routine filter condition, and external power; gas, ignition, combustion, venting, internal electrical, and safety-switch faults need qualified service.
Identify the heater before troubleshooting
Record the information below before looking up a fault or contacting a technician. It helps match the symptom to the right documentation and service procedure.
- Full model number and fuel type, if known.
- Control or display type, plus the exact status text or error code.
- Whether the pool pump is running and whether the heater attempts to start.
- When the problem began, including whether it followed maintenance or a power interruption.
Use Raypak’s product literature library to find the manual for that exact unit and check for the current revision. Raypak cautions that a manual supplied with a heater may not be the latest version. The reviewed 241236 manual, revision 50 effective August 24, 2026, covers Digital gas models 206A, 266A, 336A, and 406A; it is not a universal manual for every Raypak heater.
Raypak’s Tech Corner is the manufacturer’s starting point for common error codes, pressure problems, and ignition issues. Its FAQ also points to how-to videos. Separate resources exist for product and control families, including AVIA troubleshooting and Touchscreen Communication Error (Error 00); do not assume their instructions apply to a different display or model.
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- 【Compatibility】This 006721F pool heater drain plug kit is a perfect replacement part for Raypak RP2100 digital gas pool heaters. It is perfectly compatible with Raypak R185A, R265A, R335A, R405A series models, serving as essential Raypak pool heater parts that perfectly match original equipment specifications.
- 【High Quality】Crafted from premium rugged plastic, this Raypak drain plug kit features excellent corrosion resistance, effectively resisting pool chemicals and harsh outdoor environments. The built-in O-ring seal minimizes leakage risks, maintaining stable water temperature and energy efficiency of your heater system while extending the service life of the unit.
- 【Product Details】The package includes 6 pieces of 006721F drain plugs and matching O-rings, forming a complete plastic drain plug kit. As a dedicated replacement for Raypak RP2100 heaters, this drain plug features an original size design that fits seamlessly, quickly restoring the normal drainage function of your pool heater and avoiding freeze damage during off-season.
- 【Easy Installation】Designed for user-friendly installation, this pool heater drain plug requires no professional tools or skills. Simply align the plug with the heater port, lubricate the O-ring slightly, and hand-tighten firmly to complete the replacement. The simple operation allows you to finish maintenance quickly, saving time and maintenance costs.
- 【After-sales Service】We are committed to providing reliable support for your Raypak pool heater maintenance needs. If you have questions about compatibility, installation, or product usage, please reach out to our support team anytime. We are here to assist you with timely responses to ensure your experience with our pool heater repair parts is smooth.
Safety: know when to stop
Gas odor is an emergency. Do not light an appliance, touch electrical switches, or use a phone inside. Leave the area and call the gas supplier from a neighbor’s phone. If you cannot reach the supplier, call the fire department.
Stop troubleshooting and arrange qualified service for soot, visible flame rollout, repeated ignition failure, damaged wiring, unusual combustion, blocked venting, or repeated high-limit trips. If it is safe, shut the heater down using its normal controls. Do not open the gas train, burner chamber, or an energized control compartment, and never bypass a safety device.
Rank #2
- Essential Corrosion Protection: The ProTek Shield Assembly provides critical protection to your heater's heat exchanger against galvanic corrosion, ensuring long-lasting performance and reliability in demanding pool environments
- Strategic Placement Design: Located under the inlet connection on polymer headers or installed via the ProTek Shield Adapter assembly for brass ASME headers, this component is positioned for optimal protection where corrosion is most likely to occur
- Easy Maintenance Indicator: Replace the shield when its weight reduces to approximately 40% of the original weight, providing a simple and measurable way to monitor when maintenance is needed to keep your heater operating at peak efficiency
- Versatile Pool Compatibility: Engineered specifically for excellent performance in both chlorinated and saltwater pools, making it ideal for various pool types and water treatment systems without compromising protection quality
- Time-Saving Installation: Features a compact design with patent-pending technology that makes replacement quick and straightforward, reducing maintenance time and labor costs while ensuring your heater stays protected
Raypak’s manual states: “Installation and service must be performed by a qualified installer, service agency, or the gas supplier.” Incorrect operation or service can create fire, explosion, carbon monoxide, and injury risks.
Why is my Raypak pool heater not turning on?
For a no-fire complaint, the covered 206A–406A manual directs users to check whether electrical power is present and whether the circuit breaker has tripped; it also points to normal pump flow. Keep these checks external: use the heater’s normal controls, observe whether the pump is running, and check the breaker without opening the heater. If power and circulation appear normal but the heater still will not start, use the displayed status and matching manual rather than attempting ignition-system repairs.
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Rank #3
- HIGH-PERFORMANCE WATER TEMPERATURE SENSOR: Specially designed for spa and pool heaters, this replacement sensor provides precise water temperature monitoring to enhance heating system performance. Its compatibility with Raypak heaters makes it an essential component for maintaining comfort.
- COMPATIBILITY FOR YOUR HEATER: It is really important to ensure this sensor lid unit will fit your pool heater. This particular sensor is compatible with Raypak 206A, 207A, 266A, 267A, 336A, 337A, 406A, 407A models.
- DURABLE CONSTRUCTION AND QUALITY MATERIALS: Crafted with premium, long-lasting materials, this sensor is engineered for reliability and durability in demanding aquatic environments. Its robust design ensures consistent performance and resistance to wear. The 3-wire NTC 100K ohm design ensures accurate and consistent readings.
- EFFORTLESS INSTALLATION AND RELIABLE PERFORMANCE: Designed for easy installation, this sensor requires minimal technical knowledge. Replace the old sensor with this perfectly fitting component for a quick and seamless setup.
- RELIABLE USA-BASED PRODUCT SUPPORT AND WARRANTY: Backed by of Phoenix, Wholesale Sensors and Raypak USA-based customer support and a 12-month limited warranty, this sensor is from a trusted manufacturer known for quality and reliability.
What does “Water Sw Open” mean?
On the Digital 206A, 266A, 336A, and 406A models covered by manual 241236, “Water Sw Open” means the water pressure switch is open. Raypak’s flow advises verifying water flow and pressure and cleaning or backwashing the filter or strainer as needed. Owners can confirm the pump is running and that ordinary filter maintenance is current. If the status remains, stop and arrange qualified service.
The pressure or flow switch is a safety device: Raypak cautions not to run the heater without a properly functioning, adjusted switch. Do not bypass it or adjust it yourself. The manual’s multimeter check is a technician diagnostic, not a homeowner wiring test.
Rank #4
- APPLICATION: The 013640F lcd display board is compatible with Raypak R206A, R266A, R336A, R406A digital pool heaters manufactured after May 2011. Also fit for R185B, R265B, R335B, and R405B pool heaters models manufactured from May 2011. Maybe fit for older models as long as the part number is listed in the product manual. Replace part number 100-10000345, 013640F.
- FUNCTION: The 013640F LCD display is used to replace for old and damaged LCD display control board. Over time, the LCD display on any pool heater will be exposed to sunlight, moisture, and other pool materials, which may cause the display to stop working. This 013640F LCD display PC board can bring your LCD display back to life with a fast and easy repair.
- REPLACEMENT PARTS: The LCD display PC board replaced part number 013640F, 100-10000345. Fits model 206A, 266A, 336A, 406A, and 185B, 265B, 335B, 405B digital pool heater, rebuild and repair your pool heaters.
- MATERIAL: The 013640F Lcd display poolstat board is made quality plastic and PCB board, treated with high temperature resistance and anti-corrosion.
- Satisfaction Guarantee--100% satisfaction guarantee. Please feel free to contact us if you have any questions about our product.
Why does my Raypak heater keep shutting off?
A shutdown status can point to different conditions depending on model and control family. In the 206A–406A manual, diagnostic messages include high-limit open, rollout switch open, vent or field switch open, flow or field switch open, thermistor sensor open or short, and ignition-failure or lockout messages. These are examples for those models, not a code list for all Raypak heaters.
Read the exact display text and consult the corresponding manual. Repeated high-limit trips, rollout or vent-related faults, sensor faults that persist, or repeated ignition failures are reasons to stop and call a qualified service provider—not to reset repeatedly, defeat a switch, or open the heater.
Best Value
- Raypak 017960F protek shield-kit
Ignition lockout
For the covered models, the manual describes ignition lockout as potentially involving a pilot flame that was not established or was lost during the main burner trial. One listed configuration can delay a retry for 60 minutes. This is model- and configuration-specific; owners should not treat the delay as a repair or attempt work on the ignition system.
Where can I find the manual or a qualified technician?
Search Raypak’s literature library using the full model number, and confirm the manual’s scope and revision before following a procedure. For qualified help, use the Raypak Pool Pro locator or another qualified service provider. Gas, ignition, combustion, venting, internal electrical controls, and safety-switch work should be left to trained service personnel.
After a fault has been diagnosed, Raypak’s model history, parts search, and product instructions can help identify model-specific parts and procedures. Match the full heater model and part number; a part or kit should not be selected from a symptom alone.
Quick Recap
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