Defective Pressure Sensor/switch (Most Common)
- 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.
- Replace the pressure switch if necessary
Why is my pool heater not heating water?
- Water valves open and clear. The next thing to check is that your water valves are all open and that you have good water flow. ...
- Filters and baskets free of debris. ...
- Variable-rate pool pump. ...
- Thermostat. ...
- The pilot light on? ...
- Thermocouple unit faulty. ...
- Heat exchanger damage or cracks. ...
- High-Limit switch. ...
- Bypass valve defective. ...
- Heat pump specific issues. ...
Which pool heater should I buy?
Types of pool heaters
- Natural & Propane gas heaters. Gas heaters can operate on natural gas or propane fuels. ...
- Pool heat pumps. At first, the principle of work is the same as with gas heaters — the water pumped from the pool runs through the filter.
- Electric heaters. ...
- Solar pool heaters. ...
How do you connect pool heater to pool?
How to Link a Pool Heater to a Filter
- Shut down the pool filtration system at the breaker box. The pump must be fully stopped before you begin.
- Measure how much PVC pipe you will need with a tape measure. ...
- Obtain the length of pipe and the number of couplers or elbows needed for the job, based on your measurements.
Is having a pool heater worth it?
Well, if you want to extend your pool and spa time into the cooler temperatures of fall, installing one is well worth the money. There are several different types of swimming pool heaters. They can all heat your spa as well, if you have one.
When does a pool pump trigger a pressure switch?
Why does my pool heater fire when the pump is not on?
How high is the heater in a pool?
How to increase flow rate of variable flow pump?
How to get chlorine in pool faster?
Where is the pool heater in the house?
Do you adjust the pressure switch on a pool heater?
See 2 more
How do I check the pressure switch on my pool heater?
To see if the switch is working right, you can check it for voltage with a power meter or multi-meter. You can also temporarily bypass the pressure switch by using a jumper wire to make good contact with both terminals on the switch. If the switch is the problem, bypassing it should allow your heater to start running.
How do I adjust the pressure on my pool heater?
Turn the screw slowly to the left, counter-clockwise, to reduce the minimum required pressure. Turn it slowly just barely beyond the point where the heater turns On. Other adjustable pressure switches have an Adjustment Wheel that you turn with thumb and finger.
How do you adjust the pressure switch on a Hayward pool heater?
Turn the adjustment knob on the pressure switch clockwise, until the heater turns off, then turn the knob 1/4 turn ounter-clockwise, so that the heater turns back on. Turning the adjustment knob clockwise increases the pressure needed to close the switch. less than a 30 GPM water llow rate.
What does pressure switch do?
Pressure switches are important components for controlling the activation and deactivation of pumps in fluid systems when pressure thresholds are reached. They are also used in process control systems for maintaining steady pneumatic or mechanical pressure.
What does Flo mean on a pool heater?
The FLO code is indicating that the filter pump has stopped the flow of water to your heat pump. The heat pump cannot heat without water flow so it will turn itself off until the filter pump timer turns back on giving the heat pump the water flow it needs.
How do you calibrate a pressure switch on a hot tub?
0:274:16Balboa Legacy Systems Series - Pressure Switch CalibrationYouTubeStart of suggested clipEnd of suggested clipPressure switch calibration is a breeze adjust the pressure switch by rotating the star wheelMorePressure switch calibration is a breeze adjust the pressure switch by rotating the star wheel counterclockwise until continuity appears on the meter. Switch from low speed to high speed if available.
Why does my Hayward pool heater keep turning on and off?
The most common cause of a heater that cycles on and off could be inadequate water flow to a dirty filter or closed valve.
Why does my Hayward pool heater keep shutting off?
A dirty filter can cause low pressure and as a result, cause the heater's pressure switch to turn OFF. A dirty filter can prevent a heater from firing and it can also cause your heater to shut off before warming the water to the desired temperature.
How do you reset a Hayward pool heater?
Hayward pool heaters can be reset through the circuit breaker by simply unplugging all connected devices and turning the breaker off and on. When resetting through the interface keypad, just press the MODE button and set the heater on STANDBY before returning it to either SPA or POOL mode.
What is a heater pressure switch?
A furnace pressure switch is an automatic safety feature located near the motor. It shuts the furnace down if it senses negative pressure created by the draft inducer motor. This protects your home from dangerous backdrafting, which is when exhaust fumes are reintroduced into the system.
How do I check a pressure switch?
1:1814:26How to Test Pressure Switch on a Furnace - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo if you're having some kind of a pressure switch problem one of the first things you want to do isMoreSo if you're having some kind of a pressure switch problem one of the first things you want to do is make sure that it's not the actual pressure switch that is the problem. So the first way you can
How does a pressure switch activate?
Pressure switches rely on water pressure to do all the work. The change in pressure that activates the switch is provided via the water from the well. The pressure moves up through the diaphragm which presses against a piston and spring, which in turn opens or closes the contacts.
What should the gas pressure be on a pool heater?
For “Natural Gas Pentair Pool Heaters” the minimum is 7 inches W.C. 2 PSI @ 1000 BTU Per CU.
What happens if gas pressure is too low?
If the gas pressure is too low, your furnace's efficiency will go down. Not only that, but it will lead to a greater amount of condensation of burned gases. That is because the proportion of air in the air-fuel mixture will be too great.
Does a pool heater need a regulator?
Almost all pool heaters have a gas pressure regulator, which is both preset and sealed to prevent accidental changes in gas pressure. The gas pressure regulator is generally set at 4 inches water column (WC) for natural gas and around 10 or 11 inches WC for propane gas.
How do I bleed my pool heater?
0:422:29Pool Maintenance - Bleeding the Pool Filter - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd we get a valve that just turns quarter turn counterclockwise to open and quarter turn clockwise.MoreAnd we get a valve that just turns quarter turn counterclockwise to open and quarter turn clockwise. To close.
When does a pool pump trigger a pressure switch?
However, the pump will trigger the pressure switch when 1) The pump turns on , as there is high volume/pressure of output during the priming cycle and 2) When the pump switches to a programmed cycle for the pool vacuum, similarly high volume/ pressure.
Why does my pool heater fire when the pump is not on?
It is set for a specific pressure and the only time you would need to adjust it is if the heater was located in such a way that the downward pressure of the water from the pool would cause the heater to fire when the pump is not on. That is the function of the pressure switch.
How high is the heater in a pool?
It is an inground pool. The heater is about 3 feel above the pool level and the pump about 2 1/2 feet.
How to increase flow rate of variable flow pump?
If you have a VARIABLE FLOW (VF) pump, and you are running it in true flow mode (turnover/time), the only way to get more system pressure to fire the heater (increasing system pressure downstream of the filter) is to either decrease the run time (this will increase the flow rate or speed to satisfy the turnover requirement in the time given), or increase the turnover (this too will increase flow to satisfy turnover rate). Oddly, cleaning the filter will actually slow the pump down. Less restriction = more available flow, and pump will compensate to maintain turnover rate (slow down).
How to get chlorine in pool faster?
So in order to get chlorine in pool the pump had to run faster. I think you will find the same thing on your heater. You will need to increase the pump's flow/pressure some to get it working. Just decrease the run time by an hour or two if you want to keep electric cost the same. Good luck.
Where is the pool heater in the house?
the heater sits in a "sub basement" along with the other pool equipment, below an office and sunroom that i believe were added to the house with the pool at least 30 years ago.
Do you adjust the pressure switch on a pool heater?
The pressure switches are set at the factory and do not need to be adjusted unless your pool sits higher than the heater and the downward water pressure would cause the heater to fire or continue running when the pump is off. So adjust the pump speed to properly get the heater to fire. Click to expand...
Pressure Switch on Pool Heater
I have a Jandy pool set up and have not been in the house for a few years. I am back now and I tried to use the spa and heat it. When I turn it on, the Pressure Switch blinks red on and off. I remember I used to have a similar problem and would just turn the system off, then back on and it would work.
Re: Pressure Switch on Pool Heater
The pressure switch on a pool or spa heater is a pool guy repair -- you might want to look up South Central Pool Supply aka http://www.scppool.com/ and call the nearest distributor. They probably won't make a recommendation, but can tell you who works on your brand of heater.
How does a pool heater work?
It consists of a continuous tube with fins. Pool water flows through the tube while the tube is heated. The fins connected around the tube help capture the heat to heat the tube and water. Click here to view pool heaters.
What is an air pressure switch?
AIR PRESSURE SWITCH - An air switch is required with the use of blowers to monitor air pressure. If the air pressure becomes too high, the system will shut off.
What is an ignitor on a gas heater?
IGNITOR – This heater is set up with an electronic starter. A cable (removed) connects the ignitor to the power source on the control module. The control module sparks the ignitor when the heater is turned on. Some heaters use a continuously burning gas pilot system (called millivolt) to light the burners.
What is a high limit switch?
HIGH LIMIT SWITCH - These switches monitor water temperature in the header. If the temperature exceeds a set limit, either switch will shut off the heater.
What is gas valve switch?
GAS VALVE SWITCH - This switch allows the user to manually shut off the heater. It is access through the front panel.
Where is the gas input port on a gas heater?
GAS INPUT PORT - The gas input port is located on the side of the gas valve. The gas line from a propane tank or house natural gas source is connected to the heater at this port.
How many burners does a gas heater have?
The gas burners are the two cylinders seen at the bottom the insulated burner box. Larger heater can have as many as six burners. The gas valve in on the other side of the fire wall. This picture also shows the spark side of the ignitor discussed above.
What is the purpose of pressure switch?
The purpose of the pressure switch is to ensure that water is flowing through the unit before it allows the heater to turn on.
Why does my pool heater cycle on and off?
If your swimming pool heater is cycling ON and OFF, it is an early indication that the electrical connection or power supply is experiencing issues. However, it isn’t ALWAYS the case. There are other factors that can actively contribute to your heater’s ON and OFF cycles.
What happens if a pool heater is out of warranty?
Installing and troubleshooting a heater that is still under warranty without proper licensing can forfeit your warranty under the manufacturer’s terms and conditions. If your heater is out of warranty, sometimes, it’s simply cheaper to do it yourself.
Why does my water heater shut off?
A dirty filter can cause low pressure and as a result, cause the heater’s pressure switch to turn OFF. A dirty filter can prevent a heater from firing and it can also cause your heater to shut off before warming the water to the desired temperature.
Does increasing pressure decrease water flow?
Increasing pressure goes hand in hand with the decrease of water flow.
Can too many water features decrease pool flow?
Your pool pump only moves a certain number of GPMs, therefore , too many water features can dramatically decrease your water flow.
How does a pool heater work?
Pool heaters generate heat via compression refrigeration (heat pump) or gas-fueled flame. This heat gets passed off into the water through the heat exchanger inside the pool heater. Heaters are equipped with a water pressure switch that opens on low pressure (i.e., pump off or flow restriction).
What is pool heat pump?
Note: My brother Nathan wrote this a few years back, and I only did some minor editing. A pool heat pump is essentially a water-cooled air conditioner in reverse. It usually has a large air evaporator on the outside that looks like a condenser coil and a heat exchanger (usually…
What happens when a pool is bypassed?
When in bypass, the heater's water flow switch (i.e., the pressure switch) should open , and the heater will not run. The bypass valve is shown as closed in the picture below. Air in the water circuit is another common flow issue. If the pool level is low, the pump will begin pulling air in through the skimmer.
How to tell if pool level is low?
If the pool level is low, the pump will begin pulling air in through the skimmer. You will notice low water flow and lots of bubbles from the jets. Turn the valve from skimmers off. That will pull water just from drains at the bottom of the pool/spa.
How many actuators does a spa have?
Pools with a spa can have two automatic actuators installed: one at the pumps pool/spa intake valves and one at the pool/spa jet return valves. When in spa mode, the valve at intake closes off the section that pulls water out of pool drains and skimmers, only allowing water to be pulled from the spa drain.
What is a high limit switch on a heat pump?
Heaters have high limit switches for temperature, pressure, and refrigerant (if a heat pump) that will open and shut off the heater in a low-flow scenario.
Where does water enter a pump?
Water enters the pump at the clear sight glass, where a large screen trap is positioned to catch any chucks entering the pump. This screen trap can be easily cleaned by turning off the pump and removing the clear sight lid.
When does a pool pump trigger a pressure switch?
However, the pump will trigger the pressure switch when 1) The pump turns on , as there is high volume/pressure of output during the priming cycle and 2) When the pump switches to a programmed cycle for the pool vacuum, similarly high volume/ pressure.
Why does my pool heater fire when the pump is not on?
It is set for a specific pressure and the only time you would need to adjust it is if the heater was located in such a way that the downward pressure of the water from the pool would cause the heater to fire when the pump is not on. That is the function of the pressure switch.
How high is the heater in a pool?
It is an inground pool. The heater is about 3 feel above the pool level and the pump about 2 1/2 feet.
How to increase flow rate of variable flow pump?
If you have a VARIABLE FLOW (VF) pump, and you are running it in true flow mode (turnover/time), the only way to get more system pressure to fire the heater (increasing system pressure downstream of the filter) is to either decrease the run time (this will increase the flow rate or speed to satisfy the turnover requirement in the time given), or increase the turnover (this too will increase flow to satisfy turnover rate). Oddly, cleaning the filter will actually slow the pump down. Less restriction = more available flow, and pump will compensate to maintain turnover rate (slow down).
How to get chlorine in pool faster?
So in order to get chlorine in pool the pump had to run faster. I think you will find the same thing on your heater. You will need to increase the pump's flow/pressure some to get it working. Just decrease the run time by an hour or two if you want to keep electric cost the same. Good luck.
Where is the pool heater in the house?
the heater sits in a "sub basement" along with the other pool equipment, below an office and sunroom that i believe were added to the house with the pool at least 30 years ago.
Do you adjust the pressure switch on a pool heater?
The pressure switches are set at the factory and do not need to be adjusted unless your pool sits higher than the heater and the downward water pressure would cause the heater to fire or continue running when the pump is off. So adjust the pump speed to properly get the heater to fire. Click to expand...
