Raypak 009577F 3-Wire Temperature Sensor IID Units The Raypak 009577F temperature sensor is designed for select IID ignition gas pool and spa heaters. It monitors water temperature inside the heat exchanger and communicates with the control board for proper heating regulation and safe operation. Key Features 3-wire NTC type sensor designed for Raypak IID units. OEM replacement part for accurate temperature feedback. Helps trigger proper heating cycles and safe shutdowns if abnormal temperature is detected. Designed for professional installation in residential and commercial pool heating systems. Technical Details Part Number: 009577F Sensor Type: 3-wire NTC thermistor Application: Inlet/outlet water temperature sensing in Raypak IID ignition heaters Compatible Models: Includes, but not limited to, Raypak models 206A, 207A, 266A, 267A, 336A, 337A, 406A, 407A Installation Method: Threaded sensor well port in heater heat exchanger Installation & Compatibility Notes Before replacing the sensor, shut off power and gas to the heater and allow it to cool. Ensure correct access to the sensor port in the heat exchanger or manifold. Apply proper thread sealant or tape if specified by the heater manufacturer. Once installed, restore power and perform a system test to verify proper temperature reading and control operation. Confirm that your heater model is listed as compatible before ordering. Maintenance Tips Inspect the wiring harness for signs of corrosion, loose connections, or damage. Check the sensor well for adequate contact with the water flow path for accurate readings. If a heater displays a “SNS” or sensor-fault code, replacing this sensor is a common fix. Keep the area around the sensor clear of debris or scaling which can impede water contact. Why Choose This Sensor? The Raypak 009577F sensor is an essential component for maintaining safe and efficient heater operation in compatible gas heater systems. Using the correct factory-matching sensor ensures accurate feedback to the control board, supports reliable operation, and helps avoid premature heater shutdowns due to temperature errors.
