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Tracy WhiteAug 17, 2025
What to do if my Hayward H250FDN Heater shows 'Ignition Failure'?
- KKyle WillisAug 17, 2025
If your Hayward Heater is experiencing ignition failure, you should inspect the ignition system for faults.
To Next PageTo Next PageWhat to do if my Hayward H250FDN Heater shows 'Ignition Failure'?
If your Hayward Heater is experiencing ignition failure, you should inspect the ignition system for faults.
What to do if my Hayward H250FDN displays a 'Communication Error Between Control Module and Display Interface Assembly'?
If your Hayward Heater shows a communication error between the control module and the display interface assembly, verify the connections between these components.
What to do if my Hayward Heater displays 'Temperature Sensor (thermistor) input failure'?
If your Hayward Heater shows a 'Temperature Sensor (thermistor) input failure', check the temperature sensor and replace it if necessary.
What to do if my Hayward H250FDN Heater shows 'Ignitor Circuit Open'?
If your Hayward Heater displays 'Ignitor Circuit Open', check the ignitor circuit for continuity.
What to do if my Hayward H250FDN indicates 'Keypad failure'?
If your Hayward Heater indicates a 'Keypad failure', the solution is to replace the keypad.
What to do if my Hayward Heater displays 'Maximum return water temperature exceeded and / or rapid water temperature rise'?
If your Hayward Heater displays 'Maximum return water temperature exceeded and / or rapid water temperature rise', check the water temperature sensors and system settings.
What to do if my Hayward Heater shows 'Flame present with Gas Valve not energized'?
If your Hayward Heater shows 'Flame present with Gas Valve not energized', check the gas valve and ignition system.
What to do if my Hayward H250FDN displays 'Voltage polarity reversed, low voltage detected'?
If your Hayward Heater displays 'Voltage polarity reversed, low voltage detected', correct the polarity and ensure proper voltage is supplied.
What to do if my Hayward H250FDN Heater shows 'Water Pressure Switch, Vent Pressure Switch, or Temperature Limit Switch Fault'?
If your Hayward Heater indicates 'Water Pressure Switch, Vent Pressure Switch, or Temperature Limit Switch Fault', inspect all associated switches for proper operation.
What to do if my Hayward H250FDN displays 'Blower Vacuum Switch open'?
If your Hayward Heater displays 'Blower Vacuum Switch open', inspect the blower vacuum switch for faults.
General| Type | Natural Gas |
|---|---|
| BTU Input | 250, 000 BTU |
| Application | Pool and Spa |
| Ignition | Electronic |
| Heat Exchanger | Cupro Nickel |
| Control Panel | Digital LED |
| Thermal Efficiency | 84% |
| Minimum Flow Rate | 20 GPM |
| Maximum Flow Rate | 120 GPM |
| Warranty | 1 Year Limited |
Warning that failure to follow instructions can cause fire or explosion.
Steps to take if gas is smelled, including not using phones or switches and contacting gas supplier.
Explains the safety-alert symbol and the meaning of WARNING, CAUTION, and ATTENTION signals.
Covers safety for children, pool type, location, electrical wiring, and bonding.
Details entrapment risks like hair, limb, body, evisceration, and mechanical entrapment.
Discusses dangers of high temperatures, effects of hyperthermia, and risks for specific individuals.
Defines terms like Suction Outlet, Inches of Mercury, Main Drain, and PSI.
States the manual's purpose and recommends reading before use.
Outlines the heater's warranty coverage and exclusions for defects and maintenance.
Explains the importance of water chemistry for heat exchanger protection and provides guidelines.
Stresses the need for proper water flow through the heater and checking pump operation.
Advises on proper placement of chlorinators downstream of the heater and use of check valves.
Identifies the location of the user interface keypad and labels on the heater.
Provides warnings for propane heaters regarding gas smell and safe operation below 40°F.
Emphasizes reading safety info, checking for gas leaks, and not using tools on the gas knob.
Details immediate actions upon smelling gas, like not using phones or switches and calling the gas supplier.
Explains the three modes: STANDBY, SPA, and POOL, and how to select them.
Guides on using UP/DOWN buttons to set temperatures and understanding display feedback.
Describes how to lock maximum temperature settings to prevent unauthorized adjustments.
Instructions on how to switch between Fahrenheit and Celsius temperature displays.
Advice on protecting the heater in cold weather and professional procedures for spring startup.
Lists and explains various error codes displayed on the heater, with descriptions and information.
Details the heater's limited warranty, covering defects in materials and workmanship for one year.
Lists conditions and exceptions that void the warranty, such as improper maintenance or installation.
Provides instructions on how to file a warranty claim by contacting Hayward Pool Products.
