Hayward Heaters Troubleshooting Guide

My heater will not ignite

1. Is the system switch on?
2. Is the thermostat up to temperature?
3. Is the pump running with a clean filter less than or equal to 16 psi on pressure gauge?
4. Is the gas valve in the on position?
5. Is the pilot lit?
6. Is the gas supply valve open?
7. Are all plumbing and filter valves open?
8. If a bypass is installed, is it properly adjusted?
9. Contact a qualified technician if you still cannot find the problem.

The pilot won't light

This could be due to low gas pressure, inadequate air supply, or improper venting. Make sure gas is turned on; with propane, make sure the tank has fuel. Also check for water run-off from roof or sprinklers.

Heater won't reach the desired temperature

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.

The heater cycles on and off before it reaches the desired temperature

Inadequate water flow due to a dirty filter, closed valve, external bypass needs adjusting, reversed water connections, or pressure switch out of adjustment. It is also possible that your thermostat is out of calibration or needs replacing.

Why do I need to frequently relight my pilot?

See previous two questions for additional information. Also check for water run off from above or sprinklers directed at heater. A high wind stack may be needed due to heater location. Further troubleshooting will require a service technician.

I hear "clicking" or "sparking," but my heater will not ignite

Review the Owner's Manual if you do not find your answer, turn the heater off and contact a qualified servicer.

The heater is leaking water

The heat exchanger may be leaking because of chemical or sanitizer damage. The damage may be from winter freeze - usually leaking upon spring start-up. Contact a qualified pool service technician.

The heater appears to leak only when the burner is lit

This may be caused by condensation (occurring when heating very cold water); a missing or damaged bypass; or excessive water flow through the heater from an oversized pump.

Heater top blackened and/or emitting dark exhaust

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.

The heater has damage due to excessive heat. Why?

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 wall or windy area. Contact a qualified service professional.

I have rust returned into my pool

Sanitizers or chemical imbalance can deteriorate protective coatings on heater components and create rust. Rebalance chemicals and replace damaged components.

My heater whistles

Low gas pressure can cause whistling in the burners. Check your Owner's Guide or contact your installer.

Do Hayward heaters need heat sinks or a fireman's switch?

No. Hayward heaters cool down immediately after shut down.

What should my heater be set on?

All heaters should be installed on a non-combustible material, such as concrete or block.

Can Hayward heaters be installed indoors?

Yes, specific conditions apply. Please consult your Owner's Manual for complete details.

How much fuel does my heater use?

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.

How can I save on my heating costs?

Use a pool blanket on your oasis when not in use.

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Source: www.haywardnet.com