Product Overview

The Pentair 461107 Domestic Wire Harness with FC Assembly is a genuine OEM replacement component for compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. It replaces damaged, overheated, corroded, or deteriorated internal wiring used to connect the heater’s electrical and control components.

A heater wiring harness carries power and control signals between essential components. Damaged wiring, loose terminals, burned connectors, or incorrect previous repairs can contribute to intermittent operation, ignition problems, control errors, or complete heater shutdown. Replacing the harness with the correct OEM assembly helps restore the heater’s original wiring arrangement and dependable electrical connections.

The Pentair 461107 is designed for 115/230-volt heater electrical systems and is also identified as the replacement for previous Pentair part number 42001-0104S. Some parts references additionally identify it as replacing part number 604014.

Key Features

• Genuine Pentair OEM replacement assembly
• Complete domestic heater wiring harness with FC assembly
• Designed for compatible MasterTemp and Max-E-Therm heaters
• Supports 115/230-volt heater configurations
• Pre-terminated connectors simplify proper installation
• Restores damaged or deteriorated internal heater wiring
• Helps maintain secure power and control connections
• Manufactured to Pentair equipment specifications
• Replaces previous part number 42001-0104S
• Intended for professional heater service and repair

Specifications

Compatibility

The Pentair 461107 wire harness is listed for compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heater electrical systems. Parts references identify it as a 115/230-volt replacement harness for these heater families.

Compatible applications may include select:

• Pentair MasterTemp pool and spa heaters
• Pentair MasterTemp 125 heaters
• Sta-Rite Max-E-Therm pool and spa heaters
• Natural-gas and propane heater configurations using the matching harness
• Heaters originally equipped with part number 42001-0104S

Compatibility can depend on the heater model, manufacturing date, voltage configuration, fuel configuration, and installed wiring version. Confirm the complete heater model and serial number before ordering.

Common Reasons for Replacement

This wire harness may require replacement when the existing assembly has:

• Burned or melted connectors
• Brittle or cracked wire insulation
• Corroded terminals
• Loose or damaged plugs
• Cut or spliced wiring
• Rodent or environmental damage
• Intermittent electrical connections
• Previous improper wiring repairs

A wire harness should not be replaced solely because the heater displays an error code. Heater faults can also be caused by sensors, switches, ignition components, control boards, transformers, gas-supply problems, or improper water flow.

Installation Information

Installation requires access to the heater’s electrical and control compartments. All electrical power and fuel supply must be disconnected before service begins.

Carefully compare each connector and wire position with the heater wiring diagram and the original harness before removal. Transfer and connect one section at a time when practical to reduce the chance of incorrect wiring.

Because pool heaters combine electrical power, fuel, ignition components, and high-temperature equipment, installation should be completed by a qualified pool-heater technician, electrician, or HVAC professional. Incorrect installation may cause equipment damage, unreliable operation, electric shock, fire, or unsafe heater operation.

Confirm Before Ordering

• Verify the heater’s complete model number.
• Confirm the heater’s serial number and manufacturing date.
• Compare the existing harness with Pentair part number 461107.
• Verify whether the existing part is labeled 42001-0104S.
• Confirm the heater’s voltage and fuel configuration.
• Inspect the control board and connected components for damage.
• Review the heater wiring diagram before installation.
• Do not order based only on the heater’s BTU rating.

Package Contents

• One Pentair domestic wire harness with FC assembly

Control board, transformer, ignition module, sensors, switches, gas valve, and other heater components are not included unless specifically shown as part of the manufacturer-packaged assembly.

Warranty Information

This replacement part is covered under Pentair’s applicable manufacturer warranty terms. Warranty eligibility may depend on proof of purchase, correct application, and professional installation. Damage caused by improper wiring, incorrect voltage, installation errors, water intrusion, corrosion, or unrelated heater failures may not be covered.

Frequently Asked Questions

Does part number 461107 replace 42001-0104S?

Yes. Multiple replacement-parts references identify 461107 as the newer part number for 42001-0104S.

Is this compatible with both 115V and 230V heaters?

It is listed as a 115/230-volt heater wiring harness. The heater must still be configured according to its wiring diagram and electrical requirements.

Does this fit every MasterTemp heater?

Do not assume universal compatibility. Confirm the heater model, serial number, manufacturing date, voltage, and existing harness before ordering.

Will replacing the harness fix an ignition error?

Only when damaged wiring or a poor electrical connection is causing the fault. Ignition errors can have several other causes that should be diagnosed before parts are replaced.

Is professional installation recommended?

Yes. Pool-heater wiring should be serviced by a qualified professional familiar with gas-fired pool and spa heating equipment.