Pool Heater Igniter Replacement: Signs, Process & Costs
The igniter is your pool heater’s spark plug; it creates the initial flame that lights the main burner assembly. When igniters fail, your heater attempts to light but never achieves sustained combustion, often clicking repeatedly without ignition.
Signs Your Igniter Has Failed
- Repeated clicking without ignition: You hear the gas valve open and igniter sparking, but no flame establishes
- Intermittent lighting: Heater lights successfully some attempts but fails others
- Error codes: Pentair displays “IGN” fault, Hayward shows ignition lockout, Raypak indicates ignition failure
- Visible spark but no flame: You see the igniter sparking through the sight glass but gas doesn’t ignite
- Weak or no spark: Igniter glows dimly or doesn’t produce visible spark
Igniter Replacement Process
Professional igniter replacement takes 30-45 minutes and requires electrical safety protocols. Our RAIL-licensed technicians disconnect power at the breaker, remove the burner tray assembly, replace the igniter with an OEM part matched to your heater brand, reassemble with proper electrode gap (typically 1/8 inch), and test ignition under load.
DIY igniter replacement isn’t recommended because improper electrode gap causes repeated failures, reversed polarity damages control boards, and working inside a gas appliance without proper licensing violates Texas regulations and can void your homeowner’s insurance.
Expected Lifespan After Replacement
Quality OEM igniters last 3-5 years in North Texas conditions. Aftermarket igniters often fail within 12-18 months, which is why we exclusively install Pentair, Hayward, Jandy, Raypak, and Sta-Rite genuine parts with extended warranties through our authorized dealer partnerships.
Pressure Switch Problems in DFW Pool Heaters
Pressure switches verify adequate water flow before allowing ignition, preventing heat exchanger damage. In DFW, our 300 ppm calcium hardness (triple the national average) causes these switches to fail in 2-3 years instead of the typical 5-7 years.
Signs Your Pressure Switch Failed
- Won’t ignite: Complete silence when calling for heat
- Error codes: “PS” fault or flow error on display
- Works intermittently: Runs on high pump speed only
- Shuts off mid-cycle: Starts then stops after 30-60 seconds
- Needs tapping: Vibration temporarily frees stuck contacts
Testing Your Pressure Switch
Listen for a click when the pump starts. No click means the switch likely failed. Check the sensing tube for blockages – spider webs and calcium deposits are common in DFW. Clear with compressed air or a thin wire.
Professional testing measures actual flow rates (40-125 GPM) and pressure differential (2-4 PSI activation). We often find the switch works fine but inadequate flow from a dirty filter or undersized pump triggers the fault.
Control Board Troubleshooting & Replacement
The control board is your pool heater’s computer; it manages ignition sequences, monitors safety devices, controls gas valve operation, and communicates with automation systems. Control board failures present with diverse symptoms because the board controls multiple functions simultaneously.
Control Board Failure Indicators
- Dead display: No lights, no response to buttons, completely non-responsive
- Erratic error codes: Multiple different fault codes appearing in sequence or contradictory errors
- Won’t hold temperature settings: Forgets programmed temperature, reverts to defaults randomly
- Automation communication failures: Pentair IntelliTouch, Hayward OmniLogic, or Jandy iAquaLink can’t control heater
- Phantom shutdowns: Heater stops mid-cycle with no error code or obvious cause
- Display lights but won’t ignite: Board appears functional but won’t sequence through ignition
What Causes Control Board Failures
North Texas’ temperature extremes stress electronic components. Boards mounted in outdoor heater cabinets experience 110°F+ summer heat and occasional freezing temperatures, causing solder joint failures and capacitor degradation. Voltage spikes from summer thunderstorms damage microprocessors and communication circuits, especially on heaters without surge protection.
Additionally, moisture intrusion from poor cabinet sealing or condensation causes corrosion on circuit board traces and component leads. DFW’s calcium-laden humidity accelerates this corrosion compared to coastal or low-mineral regions.
Control Board Diagnostic Process
Proper control board diagnosis requires systematic testing because many symptoms mimic other component failures. Our factory-trained technicians verify incoming power voltage (120V or 240V depending on model), test all safety device inputs (pressure switch, high limit, rollout), measure output voltages to gas valve and igniter, and test communication protocols for automated systems.
Often what appears to be a control board failure is actually a failed sensor providing bad data to a functioning board. We test thermistors, temperature sensors, and flame sensors before recommending control board replacement, saving you hundreds in unnecessary parts.
Control Board Replacement Considerations
Control boards are model-specific—the exact board must match your heater’s BTU size, voltage, and feature set. Generic “universal” boards don’t properly integrate with brand-specific automation systems and void manufacturer warranties. We maintain relationships with Pentair, Hayward, Jandy, Raypak, and Sta-Rite to source genuine boards quickly, often same-day through our authorized dealer network.
Professional replacement includes programming board parameters (BTU size, voltage, automation protocol), calibrating temperature sensors, testing all safety interlocks, and documenting settings for future service. Installation typically requires 1-2 hours including comprehensive testing.
Flame Sensor Cleaning vs Replacement
The flame sensor (also called flame rod or flame rectification sensor) proves flame presence to the control board, allowing gas flow to continue. When flame sensors become fouled, they can’t detect flame properly and shut the heater down seconds after ignition.
Flame Sensor Failure Symptoms
- Lights then immediately shuts off: Successful ignition but shutdown within 2-10 seconds
- Flame sense error codes: “FLM” on Pentair, flame failure on Hayward, flame rod fault on Raypak
- Works briefly then fails: Heats for 30-60 seconds then safety shutdown
- Requires multiple ignition attempts: Eventually stays lit after 3-4 tries
Cleaning vs Replacing Flame Sensors
Many flame sensor issues resolve with cleaning rather than replacement. Combustion deposits, calcium buildup from DFW water condensation, and oxidation create insulating layers that prevent proper flame detection. Our technicians remove sensors, clean with fine-grit emery cloth to remove deposits without damaging the rod, and reinstall with proper flame rod positioning in the burner assembly.
Replacement becomes necessary when the flame rod is corroded, bent, cracked, or has damaged wiring. Flame sensors are relatively inexpensive components, but proper positioning is critical—too close to the burner creates false readings, too far prevents flame detection.
Expected Lifespan
Properly maintained flame sensors last 5-8 years. Annual cleaning during preventive maintenance extends lifespan and prevents mid-summer failures. DFW’s hard water accelerates calcium buildup on flame sensors, making annual professional maintenance particularly valuable for North Texas pool owners.
Thermostat & Temperature Sensor Issues
Temperature sensors and thermostors tell the control board when to start heating and when target temperature is reached. Sensor failures cause heaters to run continuously, never reach setpoint, or shut off prematurely.
Temperature Sensor Failure Symptoms
- Won’t reach set temperature: Heater runs continuously but never satisfies, or shuts off 10-15 degrees below setpoint
- Severe temperature overshoot: Heats 5-10 degrees past setpoint before shutting off
- Erratic cycling: Turns on and off rapidly without reaching temperature
- Display shows incorrect temperature: Reads 85°F when pool is actually 75°F, or vice versa
- Sensor error codes: Thermistor fault, temperature probe error
Diagnosing Sensor vs Control Board Issues
Temperature sensors are thermistors: resistors that change resistance based on temperature. Testing requires measuring resistance at known temperatures and comparing to manufacturer specifications (typically 10K ohms at 77°F). Our technicians test sensors in ice water and warm water baths to verify proper resistance curves before recommending replacement.
Many apparent sensor failures are actually loose connections, corroded terminals, or damaged wiring between sensor and control board. We test continuity and resistance throughout the circuit to identify whether the issue requires sensor replacement or simple terminal cleaning and reconnection.
Temperature Sensor Replacement
Professional sensor replacement includes proper thermal compound application, secure mounting in the sensor well, and calibration verification. Sensors must make solid thermal contact to provide accurate readings; air gaps cause significant temperature measurement errors that affect heating performance and efficiency.
For automated systems (Pentair IntelliTouch, Hayward OmniLogic, Jandy iAquaLink), proper sensor configuration in the automation system is essential. We program sensor types, calibration offsets, and control logic to ensure the automation system and heater work together seamlessly for one-button heating control.
Expected Component Lifespans & Replacement Costs
Understanding typical component lifespans helps you anticipate maintenance needs and budget appropriately. North Texas conditions (hard water, temperature extremes, and storm-related power fluctuations) generally reduce component lifespans by 20-30% compared to milder climates.
| Component | Typical Lifespan | DFW Lifespan | Repair Time | Investment Level |
|---|---|---|---|---|
| Igniter | 5-7 years | 3-5 years | 30-45 minutes | Budget-friendly |
| Pressure Switch | 5-7 years | 2-4 years | 45-60 minutes | Budget-friendly |
| Flame Sensor | 8-10 years | 5-8 years | 20-30 minutes | Minimal |
| Temperature Sensor | 8-12 years | 6-10 years | 30-45 minutes | Budget-friendly |
| Control Board | 10-15 years | 7-12 years | 1-2 hours | Significant |
| Gas Valve | 12-15 years | 10-12 years | 1-2 hours | Moderate |
When Component Repairs Indicate Replacement Timing
Individual component failures are normal and cost-effective to repair, but patterns of failures signal that replacement makes better financial sense than continued repairs on an aging heater.
Consider Replacement Rather Than Repair If:
- Multiple component failures within 12 months: Three or more separate repairs in one year indicates systemic aging
- Heat exchanger failure: Cracked or severely corroded heat exchangers cost as much to replace as a complete new heater
- Repeated failure of same component: Same part failing twice in 18 months suggests underlying issue that will continue causing failures
- Heater age exceeds 10-12 years: Component repairs on heaters beyond typical lifespan are temporary fixes
- Efficiency has declined significantly: Takes 50%+ longer to heat pool compared to when new, wasting gas
- Parts availability issues: Discontinued models with scarce parts lead to extended downtime and premium prices for obsolete components
Good Candidates for Component Repair:
- Heater under 8 years old: Well within expected service life with many years remaining
- First or second component failure: Normal wear items failing at expected intervals
- Single isolated failure: One component failed due to age or wear, not systemic issues
- Well-maintained unit: Regular descaling and annual service extends viable repair window
- Recently upgraded to cupro-nickel exchanger: Premium exchanger justifies continued investment in component repairs
Our technicians provide honest assessment during every service call. We outline repair costs, discuss remaining heater lifespan, and help you make an informed decision based on your specific situation rather than defaulting to replacement recommendations.
DIY Safety Boundaries for Pool Heater Components
Understanding what’s safe for homeowner troubleshooting versus what requires licensed professionals prevents dangerous situations and costly mistakes that make problems worse.
Homeowner-Safe Troubleshooting:
- Check breakers: Verify heater circuit breaker hasn’t tripped
- Visual inspection: Look for obvious damage, leaks, corrosion, or disconnected wires
- Clean flame sensor (power off): With power fully disconnected, careful cleaning of accessible flame sensor
- Check filter pressure: Verify adequate flow by checking filter gauge (should be under 20 PSI)
- Reset control board: Power cycle heater at breaker to clear temporary faults
- Document error codes: Note any displayed error codes for diagnostic purposes
Requires Licensed Professional (Legal & Safety Reasons):
- Any gas line work: Texas law requires licensed professionals for gas appliance repair
- Electrical repairs: 240V circuits and control board work require RAIL electrical license
- Pressure switch replacement: Involves gas appliance safety devices
- Igniter replacement: Improper gap or installation damages control boards
- Control board replacement: Programming and configuration requires factory training
- Burner tray removal: Disturbing gas supply connections
- Temperature sensor calibration: Requires specialized testing equipment
Why Professional Repair Makes Financial Sense
Beyond legal requirements, professional diagnosis often saves money. Homeowners commonly replace multiple parts trying to solve a single problem, spending more on unnecessary parts than professional diagnosis would cost. Our 4-hour response time and trucks stocked with common components mean same-day repair in most cases, minimizing the temptation to attempt DIY repairs that risk making problems worse.
OEM Parts, Warranty & Service Quality
Component replacement is only valuable if the parts are genuine OEM components with proper warranties and the installation meets manufacturer specifications. Understanding the difference between professional-grade repairs and “get it working” fixes helps you evaluate repair options.
Why We Use Exclusively OEM Parts
As authorized dealers for Pentair, Hayward, Jandy, Raypak, and Sta-Rite, we access genuine factory parts with full manufacturer warranties. These parts are engineered specifically for your heater model with correct tolerances, materials, and specifications. Aftermarket parts often use inferior materials, incorrect specifications, or generic designs that don’t properly match your heater’s requirements.
OEM igniters use correct electrode materials and gaps. OEM pressure switches have proper activation thresholds. OEM control boards include complete programming for all features including automation compatibility. Generic alternatives lack these critical specifications and fail prematurely.
Parts Warranty Through Authorized Dealers
Through our partnerships with major manufacturers, we extend parts warranties significantly beyond standard coverage. Pentair PIP, Hayward Totally Hayward, and Jandy ProEdge programs provide up to 5-year parts warranties when installed by authorized dealers with documented maintenance. Generic parts from online retailers include minimal or no warranty and no recourse for premature failure.
2-Year Labor Warranty on Component Repairs
We stand behind our work with a comprehensive 2-year labor warranty on all component repairs. If a repaired component fails within 2 years due to installation issues or part defects, we return at no charge to make it right. This warranty is only possible because we use quality OEM parts installed by factory-trained technicians following manufacturer procedures.
Parts on Truck Program
Our service trucks carry the most common failure components for major brands: igniters for Pentair MasterTemp and Hayward H-Series, pressure switches for Raypak 406A and Jandy JXi, flame sensors, and temperature sensors. This means same-day repair for most component failures rather than waiting days for parts to arrive. In 12+ years serving North Texas, we’ve learned which parts fail most frequently in DFW conditions and stock accordingly.
Common Questions About Pool Heater Component Repairs
How do I know if I need an igniter or a pressure switch?
How do I know if I need an igniter or a pressure switch?
If you hear clicking and see spark attempts but no ignition, it’s typically the igniter. If the heater doesn’t attempt to ignite at all (no clicking, no sound), it’s usually the pressure switch preventing ignition due to insufficient flow detection. Error codes on the display provide definitive diagnosis, which is why professional diagnosis saves money over guessing and replacing multiple parts unnecessarily.
Can I buy parts online and have you install them?
Can I buy parts online and have you install them?
We don’t install customer-supplied parts because we can’t warranty the part quality, compatibility, or longevity. Online parts are often aftermarket replacements or used components that fail prematurely. Our OEM parts with 2-year labor warranty cost only marginally more than online aftermarket parts, but provide guaranteed compatibility and coverage if issues arise. This policy protects both you and our reputation.
How long do component repairs typically take?
How long do component repairs typically take?
Most single-component repairs take 30-90 minutes including diagnosis, part replacement, and testing. Igniters and flame sensors are 30-45 minutes. Pressure switches and temperature sensors run 45-60 minutes. Control boards require 1-2 hours including programming and comprehensive testing. We arrive with common parts on truck, so most repairs complete same-day without return trips waiting for parts.
Will cleaning my flame sensor fix my heater issue?
Will cleaning my flame sensor fix my heater issue?
If your heater lights successfully but shuts off within 2-10 seconds, flame sensor cleaning often resolves the issue. However, if the heater won’t attempt ignition at all or you see error codes related to pressure, flow, or ignition system, the flame sensor isn’t the problem. Proper diagnosis prevents wasting time on parts that aren’t causing the failure.
Are aftermarket parts as good as OEM?
Are aftermarket parts as good as OEM?
Aftermarket parts use generic specifications that approximate but don’t precisely match OEM requirements. Igniters have incorrect electrode gaps, pressure switches have wrong activation thresholds, and control boards lack full feature sets including automation compatibility. In our experience across thousands of repairs since 2013, OEM parts last 2-3 times longer than aftermarket alternatives, making them significantly less expensive over the heater’s service life despite higher initial cost.
Factory-Trained Component Repair in Frisco, McKinney, Plano & Allen
Executive Blue Pools combines manufacturer authorization, factory training, and 12+ years of North Texas experience to deliver component repairs that last. Our CPO, IPSSA, and CSP/PHTA certifications ensure proper diagnosis, while RAIL electrical licensing and state pool contractor credentials guarantee code-compliant work that preserves your homeowner’s insurance coverage.
We respond within 4 hours to service calls throughout Frisco, McKinney, Plano, Allen, Prosper, Celina, and Richardson with trucks stocked for same-day repair. Our A+ BBB rating with zero unresolved complaints reflects our make-it-right guarantee; if the repair doesn’t solve your issue, we return immediately at no additional charge until it’s working correctly.
Component failures are frustrating, but they’re normal wear items that don’t require complete heater replacement. With genuine OEM parts, 2-year labor warranties, and transparent pricing provided within 24 hours, you know exactly what to expect before we begin work. No surprise fees, no pressure for unnecessary upgrades, no commission-based recommendations; just honest diagnosis and quality repairs from factory-trained technicians who live and work in your community.
When your pool heater’s igniter fails on the first cold evening or the pressure switch sticks on a busy Saturday, you need rapid diagnosis and same-day repair from professionals who carry the right parts and have seen these exact failures hundreds of times across North Texas. That’s the service model we’ve built since 2013, earning trust one component repair at a time.
