Pool Heaters
Q: Why won't my heater ignite?
A: Is the system switch on?
Q: Why won't my pilot light?
A: Low gas pressure, inadequate air supply, or improper venting. Also check for water run-off from roof or sprinklers.
Q: Why won't my heater reach the desired temperature?
A: The thermostat may be set too low. If the heat loss is greater than the heater input - the heater may be too small, outside air temperature is too low, inadequate gas supply. You may want to install a solar cover to slow heat loss.
Q: What causes the heater to cycle on and off before it reaches the desired temperature?
A: Inadequate water flow due to a dirty filter, closed valve, external bypass needs adjusting, reversed water connections, or pressure switch out of adjustment.
Q: Why do I need to relight my pilot often?
A: Same possibilities as previous two questions. Also check for water run off from above or sprinklers directed at heater. Further troubleshooting will require a service technician.
Q: I hear "clicking" or "sparking," but my heater will not ignite. What can I do?
A: Review the Owner's Manual, if you do not find your answer, turn the heater off and contact a qualified servicer.
Q: Why is my heater leaking water?
A: The heat exchanger may be leaking because of chemical or sanitizer damage. The damage may be from winter freeze - usually leaks upon spring start-up. Contact a qualified servicer.
Q: Why does my heater appear to leak only when the burners are lit?
A: Condensation, this can happen when heating very cold water. The bypass may be missing or damaged or excessive water flow through heater from oversized and pump may cause this.
Q: Why is my heater top blackened and/or emitting dark exhaust?
A: Either low gas pressure and/or inadequate air supply and venting, review the installation requirements in the Owner's Manual. Both conditions may need to be evaluated by a qualified service technician.
Q: My heater has damage due to excessive heat..why?
A: One, or a combination of the following: low gas pressure, downdrafting, air supply, and venting. The heater may need a high wind stack, if installed near a vertical surface or windy area. Contact a qualified service professional.
Q: Why would I have rust return into my pool?
A: Sanitizers or chemical imbalance can deteriorate protective coatings on heater components and create rust. Rebalance chemicals and replace damaged components.
Q: What causes my heater to whistle?
A: Low gas pressure can cause whistling in the burners. Check your Owner's Guide or contact your installer.
Q: Do Hayward heaters need heat sinks or a fireman's switch?
A: No, the heaters cool down immediately after shut down.
Q: What should my heater be installed on?
A: All heaters should be installed on a non-combustible material, such as concrete or block.
Q: Can Hayward heaters be installed indoors?
A: Yes, specific conditions apply. Please consult your Owner's Manual for complete details.
Q: How much fuel does my heater use?
A: Propane heaters use one gallon of fuel per hour for each 91,000 BTU's of heater input.
Example:A 250,000 BTU heater uses: 250,000/91,000 = 2.75 gallon per hour
Natural gas heaters use one therm (100,000) BTU per 100,000 BTU's heater size. Your gas is usually billed by therms.
Is the thermostat up to temperature?
Is the pump running with a clean filter?
Is the gas valve in the on position?
Is the pilot lit?
Is the gas supply valve open?
Are all plumbing and filter valves open?
If a bypass is installed, is it properly adjusted?