“Water sw open”. Raypak 266 digital. (2025)

FAQs

What does water sw open mean on a Raypak pool heater? ›

The sw water error is telling you the flow of water through the heater is not sufficient to start the heater. This is typically due to a dirty filter. If a sand filter backwash. If a cartridge or de filter remove and clean.

Short answer: Raypak is the oldest independent pool heater manufacturer in North America, and is a subsidiary of the Rheem Manufacturing Company. In certain markets, the Raypak pool heaters are labeled and sold as Rheem or Ruud, but are the same exact pool heater.

Go make sure there aren't any tripped circuit breakers in the fuse box, then check that the unit's time clock is set to the “On” position. Check Filters & Strainers: Problems with slow or inefficient heating, as well as overly noisy operation, can sometimes be traced back to dirty filters and strainers.

The average life of a pool heater is between 15 and 25 years with regular usage and proper maintenance, but there are various factors that impact that projection.

The primary role of the pressure-relief valve is to release excess pressure in the water heater tank. If the valve fails to do this, pressure can continue to build past safe limits, typically around 150 PSI (pounds per square inch).

open water (usually uncountable, plural open waters) An expanse of an ocean, sea, or large lake which is distant from shore and devoid of nearby islands or other obstructions.

The PS code indicates that the water pressure switch in the heat pump is open, meaning there is no water flowing through the heat pump. The heat pump requires a minimum of 30 gallons per minute flowing through it to operate.

These factors include pool size, weather conditions and starting water temperature. Generally speaking, it can take anywhere from 12 to 72 hours for your pool to fully heat up.

As a member of the Rheem^® family of brands, Raypak^® is a big part of Rheem Manufacturing's commitment to taking a greater degree of responsibility for future generations.

In 1985, the company acquired Raypak, a leading producer of copper tube boilers used for swimming pool heating and commercial hot water supply and hydronic heating.

How old is my Raypak pool heater? ›

Remove the door(s), pull up and out. The rating plate will be either a gold or silver color with the Raypak logo. The serial number will have 10 digits. The date code is found in the first four digits of the serial number, for example, a unit made in April of 2001 will have the first four digits read as 0104.

Certified by many Pool & Spa Manufacturers. garrygoeson : When your heater is displaying "Water Switch Open", it does not always require the pressure switch to be adjusted.My first suggestion is to thoroughly clean the filter, and make certain the pump basket and skimmer basket is clean of any leaves or debris.

Often you need to replace a few essential parts, not the entire heater. Things like your climate, water chemistry, and maintenance habits will impact the lifespan of your pool heater. Pool heaters will last anywhere from 10 to 25 years. Gas pool heaters have the shortest lifespan, at 5-10 years.

The IF code stands for ignition failure, which means your heater tried to light, but it did not. The SB code stands for a keypad failure. Pool and Spa Expert: Randy Huckstadt. The keypad failure is typically just the membrane pad.

For open-outlet (low-pressure) storage type electric water heaters, they are designed to supply only one serving point and the outlet is controlled by a special water mixer which maintains a vented passage for the air inside the tank to the atmosphere.

HVAC Technician: Michael Ferryman. The water flow lock out is indicating that the unit is not seeing correct water flow. If you are able to confirm water flow there it is likely not a blockage however this sounds like a failed flow switch on the unit.