- How to Fix a Leaking Heat Exchanger on a Hayward Heater
- How to Hook Up a Pool Heater
- How to Troubleshoot a Pool Heater That Won't Start
- How to Bypass a Flow Sensor in a Pool Heater
- Jandy Pool Heater Instructions
- How to Calculate What Pool Heater Size Is Needed
- How to Troubleshoot a Pentair MiniMax NT Pool Heater
The heat exchanger on a Hayward pool heater is a primary component in maintaining set pool temperatures. However, the heat exchanger may become corroded or damaged over time or due to excess chlorination or exposure to mineral scale. These high concentration levels typically occur when the pump is not run regularly. Troubleshooting and fixing the heat exchanger may be necessary if the Hayward pool heater is not operating as expected or the heat exchanger is leaking.
Disconnect the power to the Hayward pool heater and allow the unit to cool completely.
Remove the water inlet connections and allow the water lines to drain.
Pull the heater forward slightly until all water has drained out of the unit.
Open the front access panel on the heater and examine the heat exchanger for soot using a flashlight if necessary. Contact Hayward for a replacement heat exchanger if there is soot or corrosion on the heat exchanger.
Allow the unit to dry completely and use a chemical testing strip on pool water to check for a chemical imbalance before restoring power.
Tighten any loose connections between the heat exchanger and the pressure switch and replace any damaged or broken gaskets.
Restore power to the pool heater.
Test the water with a pH test kit and add the necessary chemicals to balance the water. This ensures that your pool heater runs efficiently.
Turn the pool pump off. Clean the pool filter and skimmer to avoid the new pool heater becoming clogged. Ensure that all debris has been removed, such as sticks and leaves.
Decide where to place the pool heater. Place the heater on level ground about three feet from the pool filter. Use a leveling tool to make sure the area is level. If it is not level, use cylinder blocks to create a level area.
Use a piece of PVC pipe to attach the pool filter return valve and the inlet valve on the pool heater. The pool filter return valve is located on the side of the filter opposite the pool pump. Cut the PVC pipe using a sharp cutting blade or a small saw.
Use another piece of PVC pipe to attach the outlet valve on the pool heater to the return valve on the side of the pool.
Turn the pool filter back on and wait for the water to cycle through. Set the thermostat on the pool heater to your desired temperature.
Check to see if the swimming pool heater switch is in the "On" position and that the temperature on the thermostat is set to about 80 degrees Fahrenheit.
Ensure that the pump is running and the gauge reads 16 psi.
Check that the gas supply valve is open and that all plumbing and filter valves are open.
Check to make sure that you have fuel in the propane tank.
Contact a pool heater repairman if you cannot solve the problem.
Shut off the circuit breaker that controls electricity to the pool heater and the pool pump that sends water through the heater. If the heater operates on gas, close the gas valve in the line connected to the heater.
Use a screwdriver to take out the screws holding the housing over the heater. The flow sensor is mounted at the point the water pipe attaches to the heater. Two wires connect from the sensor to the heater.
Detach the two wires from the sensor. On some heaters, the wires may terminate with slip-on connectors that pull off the sensor contacts. On other models, the sensor contacts have two screws that loosen to take out the wires.
Splice the two wires together with a piece of electrical tape.
Turn on the circuit breaker for the pool pump and activate the pump normally. Once water is flowing to the heater, turn on the heater as well. If the heater activates and warm water recirculates back to the pool, the flow sensor is defective. Shut off the equipment and do not operate the heater until the sensor is replaced.
Run the filter pump without the heater if this is a newly installed heater to removed any installation residue that may be present on the heater.
Use the knobs on the control panel to set your desired temperature for your heater. There are two knobs, one for the spa and the other for the heater. Rotate the knobs clockwise to increase the heat and rotate them counterclockwise to decrease the heat.
Set the middle control button between the two knobs on the control panel to either “Spa” or “Pool” to start the heater, warming the water to the temperature you selected for either the spa or pool mode.
Turn the middle control button on the control panel to “Off” when you are ready to turn off your Jandy heater.
Determine the ideal pool temperature for you. The exact number varies by taste, but most people consider 78 to 82 degrees Fahrenheit to be adequately comfortable.
Calculate the average temperature of the area surrounding the pool during the coldest month you intend to use it. If the pool is indoors, you can simply check the thermostat. If it's outdoors, consult the National Weather Service to determine average temperatures in your area.
Subtract the number in Step 2 from the number in Step 1. The result is the number of degrees your heater will need to heat the pool in order to make it comfortable.
Measure the surface area of your pool in square feet. You can do this yourself with a tape measure, or consult the calculator at PoolBright.com if your pool is of an unusual shape. The more accurate you can be, the better, though if you only have generalized figures, you can still make a reasonable estimate of the size heater you will need.
Multiply the pool's surface area in feet by the figure derived in Step 3, and then multiply that figure by 11. The result is the approximate BTU/hr (British Thermal Units per hour) the heater requires in order to heat your pool properly.
Ensure that both the heater and pump are in the "On" position and any electrical connections that lead to the heater are secure if the heat won't come on when prompted. Also, inspect the pump for leaks and clean out the filter if it is dirty.
Clean out the filter of any debris, as well as the pump strainer if the heater is cycling on and off quickly. Have the wiring to the heater repaired by a technician if it appears damaged.
Change the fuse or reset the circuit breaker if the heater will not turn on at all.
Remove any obstructions in the heater's venting system to maintain smooth operation of the unit.