A flow sensor for a pool heater monitors the passage of water through the pipe to the heater. ... Pool heaters are designed to operate only when water flows through the system. Running a pool heater dry can damage or break the heating element. If the heater is not activating, a faulty flow sensor may be to blame.
Does a pool heater restrict flow?
Many pools have an expensive heater in their water flow. Water circulates through the heater core all the time the pump is running, whether the heater is on or off. If the heater springs a leak, you have to shutdown the pump, which stop waters circulation, filtering and chlorinating your pool.Oct 23, 2021
What does a pool heater pressure switch do?
The purpose of the pressure switch is to ensure that water is flowing through the unit before it allows the heater to turn on. The pool pump must be ON and your filter clean for the switch to close and allow voltage to pass through. Test the voltage reading on the pressure switch with a multimeter.Aug 8, 2018
How does water flow through a pool heater?
The pool heat pump's fan pulls in warm air, which flows over the coils and preheats the gas; the hotter the ambient temperature, the more heat the evaporator absorbs. The freon reverts to a liquid. The warm water flows into the pool, heating it. The heat pump pulls more cool water in from the pool.Aug 31, 2021
What is the purpose of a flow switch?
A flow switch, sometimes referred to as a flow sensor or flow indicator, is a device used to monitor the flow rate and pressure of liquids, air or other gaseous media through a duct, system or loop.
What is airflow switch?
The airflow switch (AFS) has many uses and is a control that can either be a safety switch or an operating control. For all intents and purposes, it's nothing more than a switch, just like one on your wall at home to turn on a light. This switch will turn on (make contact) or turn off (break contact) automatically.Jun 14, 2001
What does a Hayward flow switch do?
The flow switch is a safety device that ensures that water is flowing through the cell before the salt system will generate chlorine. Failure to properly install the flow switch can result in explosive gases accumulating in the pool plumbing system.
How does a pool flow sensor work?
The device is installed in one of the pipes, usually directly before or directly after the pool filter. There are different types of flow meters but in general, they measure the speed of the water flowing past the meter. From this, the meter calculates the water volume that is flowing in one minute.
What does low flow mean on pool heater?
Control Displays "LOW FLOW" POSSIBLE CAUSE: The pool pump is not on. A valve is turned, bypassing the water through the heater. Clogged water line, filter or pump impeller. Internal water pressure switch failure.
What does no flow mean on my pool pump?
The most common reason for low or no flow is that the baskets are full of debris. By checking and emptying both the skimmer basket (by the pool) and the pump basket (inside the pump) will free up the water flow, allowing the system to fully 'prime' and function at full capacity.Nov 4, 2021