How do I reset my Hayward gas heater?

The heater can be manually reset using the keypad by cycling the MODE button through “STANDBY” and back to the original operating mode (“POOL” or “SPA”).

What does Lo mean on a Hayward heater?

Generally, LO refers to the pressure switch, water pressure. This can be caused by either the diaphram in the flow switch has failed or the filters is clogged and/or pump is unable to make enough pressure to make the switch.

What does it mean when a Hayward Pool heater says Lo?

Why does my gas pool heater keep turning 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.

Where does a Hayward pool heater need to be installed?

Unit must be installed outdoors only and below an altitude of 2000 feet The heat exchanger in your Hayward pool heater is made from the highest quality of copper materials. The premium materials and the exacting processes used in the manufacture of the heat exchanger is state of the art in pool heater design and manu- facture.

How to test gas pressure on Universal H series heater?

Step 1: Step 2: Step 3: Press the Mode button to place the heater in Standby Mode. Hold the Mode and Down Arrow buttons simultaneously for 3 seconds for Bypass operation. “bo” will be displayed on the screen. Page 7 Gas Pressure Testing Measure the inlet Static Pressure (valve off) and Load Pressure (valve on / energized).

How to troubleshoot a universal H series blower?

1. The control checks for open Blower Vacuum Switch 2. Blower starts pre-purge cycle as the igniter heats up (20 Sec). 3. The Control checks for a closed Blower Vacuum Switch. 4. At proper Igniter temp a 4 second trial begins. Gas valve opens and monitors flame sense. The blower will turn off for one second. The

What happens if you close the bypass valve on a water heater?

Failure to close the bypass valve when attempting to operate the heater will result in extensive damage to the heat exchanger. Ensure water flow through the heater is restored before operating the heater. A bypass feature is also advantageous for service needs and for the ability to remove the heater from the water path when not heating.

What are the different models of Hayward pool heaters?

Troubleshooting chart for Hayward Universal H-Series millivolt pool heaters, with standing pilot, models H150, H200, H250, H300, H350, H400 Troubleshooting chart for Hayward Universal H-Series electronic pool heaters with a digital display, models H150, H200, H250, H300, H350, H400 INPSECT WIRES FOR KINKS OR RODENT DAMAGE.

How to troubleshoot a pool heat pump in Hayward CA?

Call HAYWARD service department for info. Check water flow to heat pump. . Low water flow. Set unit to ACP if you have the heat / cool option. Refer to text on HPC-5 control board. Check pool temp. Wait until pool needs heat. Call HAYWARD service department for info.

What is the Universal H series pool heater?

The Universal H-Series is an energy efficient, high performance, installation adaptable commitment to the pool service professional. Sign In or Register to access your lists. Type a name for your new list.