Product Overview The Pentair 476223 Ignition Control Module is a genuine OEM replacement ICM designed for compatible Pentair MasterTemp and Sta-Rite Max-E-Therm gas pool and spa heaters. Also commonly referred to as the Fenwal ignition control, this module manages the heater's ignition sequence and flame-sensing functions. The 476223 replaces older Pentair ignition control module 42001-0052S and includes the updated configuration needed for compatibility with applicable older and newer heater control systems. Key Features Genuine Pentair OEM ReplacementFactory replacement ignition module engineered for compatible Pentair and Sta-Rite pool and spa heaters. Ignition Sequence ControlControls the spark and ignition process when the heater receives a call for heat. Flame-Sensing FunctionMonitors burner flame operation and works with the heater's safety system to shut down ignition when a proper flame signal is not detected. Updated Replacement DesignReplaces older Pentair part number 42001-0052S and is designed with adapters for compatible legacy and newer heater configurations. MasterTemp & Max-E-Therm CompatibilityDesigned for select Pentair MasterTemp and Sta-Rite Max-E-Therm gas heaters. Benefits Genuine Pentair OEM heater component Restores proper ignition sequencing Supports heater flame-sensing and safety functions Updated replacement for 42001-0052S Compatible with applicable legacy and newer heater configurations Allows ignition-system repair without replacing the complete heater Suitable for natural gas and propane heater configurations where specified Specifications Specification Details Brand Pentair Product Type Ignition Control Module Manufacturer Part Number / SKU 476223 UPC / Barcode 788379888237 Alternate Name ICM / Fenwal Ignition Control Replaces 42001-0052S Compatible Series MasterTemp / Max-E-Therm Application Gas Pool & Spa Heater Product Weight Approx. 2 lb Shipping Dimensions Approx. 6 x 6 x 6 in. Warranty Subject to Current Pentair Replacement-Part Warranty Terms Installation Information The ignition control module is a safety-critical gas heater component. Electrical power and the gas supply must be shut off before heater servicing begins. During replacement, inspect the ignition wiring, flame-sensing components, igniter, wiring harnesses, connectors, grounding, and related heater controls for damage or corrosion. Installation and diagnosis should be performed by a qualified pool-heater or gas-service professional. Confirm Before Ordering Pentair part 476223 is intended for compatible MasterTemp and Sta-Rite Max-E-Therm heater applications and replaces older ignition control module 42001-0052S. Compatibility can vary depending on heater model, manufacturing date, region, and control-system generation. Verify the heater model, serial number, and existing ignition control module before ordering. This listing is for the ignition control module, not the heater's main control board. The main control board is a separate component. Warranty Information Warranty coverage is subject to Pentair's current replacement-part terms and may depend on proper professional installation, application, purchase channel, and proof of purchase. Customer Q&A Q: What does the Pentair 476223 control?It manages the heater's ignition sequence and monitors the flame-sensing circuit during operation. Q: What older part does 476223 replace?Pentair identifies 476223 as the current replacement for ignition control module 42001-0052S. Q: Does it fit MasterTemp heaters?Yes. It is designed for compatible Pentair MasterTemp heater configurations. Q: Does it fit Sta-Rite Max-E-Therm heaters?Yes. It is also used with compatible Sta-Rite Max-E-Therm gas heaters. Q: Is this the same as the main heater control board?No. The ignition control module and main control board perform different functions and are separate replacement components.
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