The Hayward pool heater bO code is supposed to appear on your display when a remote thermostat is controlling the heater.
But if you aren’t using the remote thermostat to control your unit and it is still showing the bO code, you need to adjust the setting to make the error go away. Keep reading to get rid of the bO error code ASAP.
Table Of Contents
- How To Get Rid of Hayward Pool Heater bO Code [Solved]
- How To Put Hayward Heater In bO Mode?
- Other Common Hayward Pool Heater Codes
- AC Error Code: Blower Switch Open
- AO Error Code: Blower Switch Closed
- CE Error Code: Communication Error
- HS Error Code: Water Overheating
- How do you clean a heat exchanger on a pool heater?
- Is the Pentair IntelliFlo better than the Hayward EcoStar?
- What happens if your heat exchanger is cracked?
- Can a Hayward pool pump overheat?
- Is it worth fixing a pool pump?
How To Get Rid of Hayward Pool Heater bO Code [Solved]
When you are getting the Hayward heater bO code on display even when you aren’t using the remote thermostat to control the heater, follow the instructions below to make the code go away.
You need to put the heater in STANDBY Mode to erase the bO code from the display. Press the mode button once to get the heater in STANDBY Mode.
First, press and hold on to the Down key. Then, press and hold down the MODE key as well. You need to keep holding both keys for about three seconds. At this point, the “bO” message should no longer be on the display.
How To Put Hayward Heater In bO Mode?
Here’s how you get your heater in Bypass Operation(bo) mode. You need to put the heater in STANDBY Mode to get the bO code on the heater display. Press the mode button once to get the heater in STANDBY Mode.
First, press and hold on to the Down key. Then, press and hold down the MODE key as well. You need to keep holding both keys for about three seconds. At this point, the “bO” message should appear on the display.
Other Common Hayward Pool Heater Codes
There are at least 14 error codes in most Hayward pool heater models. We will explore the most frequent errors that users suffer within this section.
However, if you need to take a detailed look at all the error codes and how to solve them simply, read our article on Hayward pool heater error codes.
AC Error Code: Blower Switch Open
This happens when the vacuum switch on your blower is detected as closed when it should be open. If the vacuum switch is closed before the blower is turned on, the machine will not switch on the blower.
The error will disappear once you’ve opened the switch, and your unit will perform an automated reset.
AO Error Code: Blower Switch Closed
The AO code is the exact opposite of the Hayward pool heater AC code. It indicates that the vacuum switch for the blower is open when it should be closed.
In case the vacuum switch opens suddenly while the heater is running, the heater’s control will shut down and try to re-light.
If the switch is not shut once the blower starts, the gadget will enter lockout mode. The system will automatically reset once the error has been resolved.
CE Error Code: Communication Error
When there has been a miscommunication between the control module of your pool heater and the Display Interface Assembly, we get the CE error code.
Restart the heater by detaching and reconnecting it to the power source. Ensure that the pool heater wiring is secure and correctly connected.
If all checks out okay, you may either need to replace the Control Module or the Display Interface Assembly. At worst, both need replacement.
In this case, you can hand over the task to a professional. Alternatively, watching the video will be helpful in your control board replacement.
HS Error Code: Water Overheating
Your heater will display this code if the highest recommended return water temperature has been exceeded or if the water temperature has risen rapidly.
To solve the issue, make sure the remote thermostat is set at 104°F or lower.
You need to check for adequate water flow. Match the displayed temperature to the actual pool water temperature with the help of a thermometer. If the discrepancy is significant, replace the inflow water temperature sensor.
How do you clean a heat exchanger on a pool heater?
First, take off the heat exchanger from the mounting bracket and position it on a wiped-down surface. Using a soft-tipped brush, apply a degreasing solvent to the heat exchanger. Allow the degreaser to loosen any remaining soot. Using a garden hose, clean the heat exchanger.
Is the Pentair IntelliFlo better than the Hayward EcoStar?
Both pumps offer advantages and disadvantages. The Hayward EcoStar is more energy-efficient, while the Pentair IntelliFlo has an established track record of longevity. The two pumps are neck and neck, and it all comes down to personal preference.
What happens if your heat exchanger is cracked?
If you’re lucky, your furnace will stop working, but most of the time, it will continue to operate with a crack, enabling carbon monoxide to flow into your home. No heat in the winter, recurring flu-like symptoms, or a blaring carbon monoxide alarm is the only signals of a malfunctioning heat exchanger.
Can a Hayward pool pump overheat?
Yes. A pool pump can get overheated for two reasons: electrical failure or friction. Pumps that have been electrically overheated are the most common. However, if a pump is deprived of water, a friction fire can occur.
Is it worth fixing a pool pump?
That depends on which part of your pool pump is broken and needs fixing. If the cost of repair is lower than the price of a heat pump, we would recommend you go for the repair. However, consulting a professional for advice isn’t a bad idea.
Hopefully, you found our guide on the Hayward pool heater bO error code helpful. Leave us a comment below if you have any questions about your Hayward pool heater.