Product Overview

The Raypak 018304F Auto Limit Kit is a genuine OEM automatic-reset high-limit safety switch designed for compatible Raypak gas pool and spa heaters.

Commonly cataloged as the 150°F Auto Limit Kit, this surface-mount safety control monitors heater temperature and interrupts operation if an excessive-temperature condition occurs. Once the temperature returns to an acceptable range, the switch automatically resets, allowing normal heater operation to resume when all other safety requirements are satisfied.

Key Features

Automatic-Reset High Limit: Automatically opens the heater safety circuit during an over-temperature condition and resets after the temperature falls.

Surface-Mount Design: Designed for surface-mounted installation on compatible Raypak ASME heater configurations.

Genuine Raypak OEM Part: Manufactured as a factory replacement component for specified Raypak pool and spa heaters.

Broad Heater Compatibility: Used with compatible Atmospheric and Low NOx Digital heater models from 206A through 407A.

Critical Safety Component: Helps protect the heater and heat exchanger from potentially damaging excessive-temperature conditions.

Benefits

Genuine Raypak OEM replacement

Automatic-reset operation

Helps protect against overheating

Restores proper heater safety-circuit operation

Compatible with multiple Raypak heater sizes

Designed for ASME heater applications where specified

Direct replacement for professional heater service

Specifications

Warranty & Compatibility

Installation Information

Disconnect electrical power and shut off the gas supply before servicing the heater. Allow the unit to cool completely before removing panels or replacing safety controls.

The high-limit switch is part of the heater's safety circuit and should never be bypassed or removed from operation.

Professional installation and diagnosis by a qualified pool-heater technician is recommended.

Confirm Before Ordering

Raypak 018304F is specified for compatible ASME versions of:

• 206A / 266A / 336A / 406A Atmospheric heaters
• 207A / 267A / 337A / 407A Low NOx heaters

Important: Raypak currently catalogs this replacement part as “Auto Limit Kit 150F.” Some current Raypak heater parts tables describe the same 018304F surface-mount ASME control as a 160°F high-limit auto-reset component. Because documentation varies by heater generation, confirm the heater model, serial number, ASME configuration, and original part number before ordering.

Do not confuse 018304F with 006725F, the separate 135°F auto-reset high-limit used elsewhere in the heater safety system.

Warranty Information

The Raypak 018304F is a genuine factory-authorized replacement component. Warranty duration and eligibility are subject to Raypak's current replacement-part warranty terms, installation requirements, and proof of purchase.

Customer-Facing Q&A

Q: What does the 018304F do?
A: It monitors heater temperature and opens the safety circuit if an excessive-temperature condition occurs.

Q: Does it reset automatically?
A: Yes. It is an automatic-reset high-limit control.

Q: Is this used on standard residential heaters?
A: Raypak's current parts documentation specifically identifies 018304F as a surface-mount high limit for applicable ASME heater configurations.

Q: Does it fit Low NOx models?
A: Yes. Raypak lists it for compatible 207A, 267A, 337A, and 407A ASME Low NOx heaters.