Most common reason why spas do not heat.

Posted by on 1/29/2016 to News

LOW FLOW: A spa heater relies on sufficient water flow to operate. A pressure switch, screwed into the heater chamber, senses when the water flow is too low to properly protect the heater. It breaks the electrical circuit powering the heater element, and the heater shuts down, and won't begin to heat until proper water flow is established. With a flow issue, you don't normally need any spa heater parts to repair. Low flow in your spa or hot tub is most commonly associated with "dirty spa filter(s)". If your spa heater won't heat & you have a flo error code, remove your spa filter cartridge with the power off. After spa filter cartridges are removed power the spa back up and see if the "flo" error code goes away. If so you simply have dirty filter cartridges that need to bethoroughl cleaned with a degeaser or replaced. Other flow problems will be more severe broken pump impeller, broken valves, or clogged pipes or spa jets. These problems will be evident from the noticeably reduced flow coming into the spa or hot tub