Rheem / Raypak
Rheem / Raypak Thermal Fuse 005899F – Pool Heater Roll-Out Safety Switch
Rheem / Raypak Thermal Fuse
Genuine Raypak thermal cut-off fuse and roll-out safety switch for compatible Rheem and Raypak gas pool heaters. Designed to interrupt the heater safety circuit when excessive heat is detected.
Warranty Information
1-Year Manufacturer Warranty
Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.
The Rheem / Raypak Thermal Fuse (005899F) is a genuine Raypak replacement safety component designed for compatible Raypak and Rheem gas pool and spa heaters. Also referred to as a thermal cut-off fuse or roll-out safety switch, this component is part of the heater's protective safety circuit and is designed to interrupt operation when excessive heat is detected.
The 005899F is listed for multiple Raypak and Rheem heater configurations, including above-ground, Electronic Ignition, Cupro-Nickel Electronic Ignition, Millivolt Ignition and Low NOx models. It is also identified for use with the Raypak Versa 105A heater. A failed thermal fuse may indicate an underlying heater operating or venting problem, so professional diagnosis is required before replacement and return to service.
Key Features
Original Raypak thermal fuse designed for specified Raypak and Rheem gas pool heaters.
Designed to interrupt the heater safety circuit when excessive heat is detected.
Used as part of the heater's safety protection system against abnormal heat conditions.
Compatible with specified above-ground, Electronic Ignition, Millivolt and Low NOx Raypak/Rheem heaters.
Listed for compatible heater configurations operating on natural gas or propane.
Intended for replacement of a faulty or open thermal fuse after the cause of the safety condition has been identified.
Compatibility & Fitment
The Rheem / Raypak 005899F Thermal Fuse is designed for compatible Raypak and Rheem gas pool heaters, including the following models:
- Raypak/Rheem Above-Ground Heaters: P-R106A-AN-C, P-R106A-AP-C, P-R156A-AN-C, P-R156A-AP-C, P-R156A-EN-C, P-R156A-EP-C.
- Raypak/Rheem Electronic Ignition Heaters: P-R206A-EN-C, P-R206A-EP-C, P-R266A-EN-C, P-R266A-EP-C, P-R336A-EN-C, P-R336A-EP-C, P-R406A-EN-C, P-R406A-EP-C.
- Raypak/Rheem Electronic Ignition Cupro-Nickel Heaters: P-R206A-EN-X, P-R206A-EP-X, P-R266A-EN-X, P-R266A-EP-X, P-R336A-EN-X, P-R336A-EP-X, P-R406A-EN-X, P-R406A-EP-X.
- Raypak/Rheem Millivolt Ignition Heaters: P-R206A-MN-C, P-R206A-MP-C, P-R266A-MN-C, P-R266A-MP-C, P-R336A-MN-C, P-R336A-MP-C, P-R406A-MN-C, P-R406A-MP-C.
- Raypak/Rheem Low NOx Heaters: P-R207AL-EN-C, P-R266AL-EN-C, P-R336AL-EN-C, P-R406AL-EN-C.
- Raypak Versa Pool Heaters: 105A.
Compatible Fuel Types: Natural Gas and Propane.
Compatibility may vary by production year, configuration and installation. Verify your exact model and part number before ordering.
Applications
- Replacement of a failed thermal cut-off fuse in compatible Raypak and Rheem heaters
- Professional diagnosis and repair of open heater safety circuits
- Servicing compatible Raypak/Rheem above-ground pool heaters
- Safety circuit repairs on specified Electronic Ignition and Millivolt heater models
- Replacement of roll-out safety components in compatible Low NOx heater configurations
- Servicing compatible natural gas and propane pool heaters
A failed thermal fuse may be the result of an unsafe heater operating condition. The underlying cause must be identified and corrected before installing a replacement and returning the heater to service.
Professional Installation Recommended
All service on gas appliances shall be performed by a licensed HVAC contractor. Replacement of the thermal fuse must follow Raypak/Rheem manufacturer instructions and all applicable electrical, plumbing, gas, bonding and building codes.
Before replacing the fuse, the contractor must diagnose why the original safety component opened or failed. The heater's combustion, venting and associated safety systems should be inspected as required to identify and correct the underlying condition.
The heater must be safely shut down, isolated from electrical power and gas as required, and allowed to cool before servicing. After replacement, the technician must verify proper operation of the heater and its safety controls.
Important: Never bypass, jumper or defeat a thermal fuse or roll-out safety switch to allow a heater to operate. Replacing the fuse without correcting the cause of overheating may result in repeated failure or an unsafe operating condition.
Specifications
| SKU | 005899F |
| Brand | Raypak / Rheem |
| Product Type | Pool Heater Thermal Fuse / Roll-Out Safety Switch |
| UPC / GTIN | 662766470376 |
| Function | Thermal Cut-Off / Heater Safety Circuit Protection |
| Compatibility | Specified Raypak/Rheem R106A, R156A, R206A, R266A, R336A, R406A, Low NOx and Versa 105A heater models. See Compatibility & Fitment for exact model numbers. |
| Compatible Gas Types | Natural Gas and Propane |
| Application | Gas Pool Heater Thermal Safety Circuit Replacement |
| Weight | 0.01 lb |
| Installation | Licensed HVAC Contractor Required |
| Warranty | 1-Year Manufacturer Warranty |
| Final Sale | Yes |
Frequently Asked Questions
The 005899F is a thermal cut-off safety component designed to interrupt the heater's safety circuit when excessive heat is detected. It is also commonly referred to as a roll-out safety switch.
The 005899F is listed for specified Raypak and Rheem above-ground, Electronic Ignition, Cupro-Nickel, Millivolt and Low NOx heaters, as well as the Raypak Versa 105A. Refer to the Compatibility & Fitment section for the complete list of heater models.
A failed or open thermal fuse may prevent heater operation, but it is not the only possible cause of an ignition problem. A licensed HVAC contractor should diagnose the heater and determine why the safety circuit opened before replacing the component.
No. The thermal fuse is a safety component and must never be bypassed, jumpered or defeated. All diagnosis and replacement work must be performed by a licensed HVAC contractor following the manufacturer's instructions.
The Rheem / Raypak 005899F thermal fuse includes a 1-year manufacturer warranty and is designated final sale. Verify your exact heater model and required replacement part before ordering.
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