Swimming pool bliss can hit a snag when your Hayward pool heater decides to display error codes. Don’t fret, though – we’ve got your back with a comprehensive guide to troubleshoot and conquer these pesky codes like a pro. 🏊♂️🔥
Hayward Pool Heater Error Codes
| Error Codes | Error Codes Meaning |
| AC | The blower vacuum switch open |
| AO | The blower vacuum switch closed |
| bD | Bad board or secondary high voltage fault |
| CE | There’s an error in communication between the Display Interface Assembly and Control Module |
| EE | Bad board |
| HF | Flame present with gas valve not energized |
| HS | Maximum return water temperature exceeded/or rapid water temperature rise |
| IF | Ignition failure |
| IO | Ignition circuit open |
| LO | Vent pressure switch, water pressure switch, or temperature limit switch fault |
| PF | Voltage polarity reversed or low voltage detected |
| SB | Keypad failure |
| SF | Temperature sensor [thermistor] input failure |
| bO | Bypass operation |
1. Deciphering Error Code AC – Blower Vacuum Switch Open:
The Scenario:
This code pops up when your blower vacuum switch behaves differently than expected. If the switch is detected as open before starting the blower, your heater won’t ignite the blower.
Solution:
To kick out the Hayward pool heater error code AC, follow these simple steps. With a touch of electrical know-how, you might just solve it yourself!
- Disconnect cables and tubing from the switch.
- Test continuity between the switch’s terminals.
- Replace the switch if continuity is detected.
- If the blower persists despite the heater being off, consider replacing the ICB.
2. Unraveling Error Code AO – Blower Vacuum Switch Closed:
The Twist:
AO code is the opposite of AC – it triggers when your blower vacuum switch stays closed when it should open.
The Solution:
No need to panic; we’ve got the solution to tame the AO code beast!
- Check vacuum switch tubing for damage.
- Inspect the wiring for the vacuum switch’s secure connection.
- Examine blower wiring, ensuring a snug connection to the control module.
- Measure blower winding resistance (8-9 ohms from red to white).
- Replace a malfunctioning blower if the measured values differ.
3. Unveiling Error Code bD – Bad Board or High-Voltage Fault:
The Enigma:
bD error arises from a bad board or a secondary high-voltage fault.
The Resolution:
Solving this puzzle requires attention to specific components:
- Check the ‘FC4’ fuse on the fuse board; ensure it’s not open.
- Inspect voltage across pins 3 and 5 of the P6 receptacle on the fuse board.
- Measure voltage across pins 1 and 3 of the Plug on Harness (120 volts).
- If everything checks out, consider replacing the Control Module and/or Harness.
4. Tackling Error Code CE – Communication Glitch:
The Mystery:
CE error code indicates communication woes between the control module and display interface assembly.
The Approach:
Conquering this digital hiccup requires a few strategic steps:
- Reset the heater by disconnecting and reconnecting it to power.
- Inspect the wiring between display and control module; ensure a secure connection.
- Replace Control Module and/or Display Interface Assembly if necessary.
5. Overcoming Error Code EE – Control Board Woes:
The Dilemma:
EE code suggests a faulty control board – a bit less to do here.
The Fix:
When EE strikes, it’s time for a control board replacement. Unfortunately, there’s no workaround.
6. Navigating Error Code HF – Flame and Gas Valve Mismatch:
The Issue:
HF error code signals a flame present without an energized gas valve.
The Solution:
Troubleshooting the HF error takes careful attention:
- Check for a visible flame using the sight glass.
- Measure 24 VAC at gas valve connections (without detaching the valve).
- Based on the measurements, replace the ICB or the gas valve.
7. Solving Error Code HS – Water Temperature Sensing Glitch:
The Trouble:
HS error code signifies water temperature sensing errors.
The Fix:
Address the HS error code step by step:
- Ensure remote thermostat’s set point is ≤104°F.
- Check water flow based on Hayward model specifications.
- Compare heater’s temperature reading to actual water temperature.
- Replace the inlet water temperature sensor if necessary.
8. Conquering Error Code IF – Ignition Failure Troubles:
The Challenge:
IF error results from ignition failures due to various factors.
The Strategy:
Defeating the IF error code requires meticulous troubleshooting:
- Ensure gas shutoff valve is open.
- Verify intake gas supply pressure is within specs.
- Examine flame detection circuitry; secure wire harness connectors.
- Check gas valve wiring; ensure proper connection.
- Measure voltage across gas valve during ignition trial.
9. Resolving Error Code IO – Igniter Circuit Disruption:
The Puzzle:
IO code indicates an open igniter circuit during blower operation.
The Plan:
IO error can be overcome with these steps:
- Replace a broken ignitor, if needed.
- Inspect ignition wiring; ensure secure ignitor plug connection.
10. Untangling Error Code LO – Low Water Flow Alert:
The Challenge:
LO code triggers when the limit string detects low water flow.
The Solution:
Solving LO error often involves cleaning your pool filter to enhance water flow.
11. Decoding Error Code PF – Electrical Supply Wiring Woes:
The Mystery:
PF error points to electrical supply wiring glitches.
The Resolution:
Check voltage supply, polarity, and grounding for a proper connection.
12. Embracing the Error Code bO – Bypass Operation Mode:
The Insight:
bO error occurs during bypass operation; it’s a standard display when controlled by a remote thermostat.
The Approach:
When bO shows up without remote control, make the adjustments:
- Press MODE key for STANDBY mode.
- Press and hold DOWN key while holding MODE key for 3 seconds.
- “bO” indicator should disappear.
13. Navigating Error Code SF – Temperature Input Sensor Issue:
The Quandary:
SF error code indicates a failing temperature input sensor.
The Navigation:
Navigate the SF error with these steps:
- Examine sensor wiring; ensure proper connection to control module.
- Replace the temperature sensor if necessary.
14. Cracking the Code with FAQs:
Q1: How can I clean my Hayward gas pool heater’s heat exchanger?
A1: Carefully remove the heat exchanger, apply degreaser with a soft brush, and rinse it with a garden hose.
Q2: Can a pool heater get clogged?
A2: Yes, a clogged filter is a common issue that can affect pool heater performance.
Q3: Is a gas pool heater explosion a concern?
A3: Highly unlikely. Pool heaters are generally safe and rarely explode while in operation.
Q4: What’s the lifespan of Hayward heaters?
A4: Expect around 7 to 10 years with proper maintenance, potentially longer.
Q5: Do pool heaters produce carbon monoxide?
A5: Though possible, pool heaters located outside pose less carbon monoxide concern.
In Conclusion:
Don’t let Hayward pool heater error codes dampen your aquatic enjoyment. Armed with this guide, you’re equipped to face any error head-on. Remember, we’re here to help – drop a comment, and we’ll be on the case! heater function.