XPARTCO HS810 Refrigerator 3-in-1 Hard Start Kit 1/12 to 1/5 HP 120V
The XPARTCO XPHS810 is a universal 3-in-1 hard start kit that combines a solid-state starting relay, a start capacitor, and thermal overload protection into a single prewired unit for refrigerator and freezer compressors rated 1/12 to 1/5 HP at 120V (110–125VAC). It's designed as a direct equivalent to the widely used Supco RCO810 and similar kits, giving a struggling compressor extra starting torque to overcome internal friction and gas pressure at startup — commonly used to fix the classic "click-buzz-click" no-start symptom without replacing the entire compressor.
The kit is fully prewired with color-coded leads (typically black = Common, white = Start, red = Run) and mounts directly onto the compressor's terminal pins, with instructions printed on the unit itself. It directly replaces Supco RCO810, URCO810, URC0810, RC0810, RC100, TJ90RCO810, AP4503019, ERP810, ERPU810, HS8, HS810, HS81, PCS810, and Mars 32781. Installs in 15–30 minutes with basic hand tools.
Quick Answer
The XPARTCO HS810 3-in-1 Hard Start Kit fixes refrigerators and freezers whose compressor makes a repeated "click-buzz-click" sound and fails to start, or that shut off on thermal overload during startup. Combines relay, start capacitor, and overload protector in one prewired unit for 1/12 to 1/5 HP compressors, 120V, 3.5A RLA. Replaces Supco RCO810, URCO810, RC0810, RC100, TJ90RCO810, AP4503019, ERP810, HS8, HS810, HS81, PCS810, Mars 32781. Do not install on LG linear/inverter compressors — see Installation Notes.
Common Problems This Part Fixes
- Compressor makes a repeated "click-buzz-click" noise and fails to start
- Refrigerator or freezer runs warm because the compressor won't stay running
- Compressor hums but doesn't start, then trips off on overload
- Refrigerator cycles on and off rapidly without reaching temperature
- Older or worn compressor that starts hard, especially after a power outage
Cross Reference Information
Part numbers can change over a product's lifecycle as manufacturers update designs or release new appliance models. For your convenience, we've included any known superseded, alternate, or cross-reference part numbers that match this item.
Replaces Part Numbers
This 3-in-1 hard start kit directly replaces the following OEM and cross-reference part numbers:
XPHS810, RCO810, URCO810, URC0810, RC0810, RC100, TJ90RCO810, AP4503019, ERP810, ERPU810, HS8, HS810, HS81, PCS810, Mars 32781
If your part number is not listed above, contact our support team before ordering and we will verify compatibility.
Compatibility
This universal hard start kit is compatible with refrigerator and freezer compressors in the following range:
- Compressors rated 1/12 HP through 1/5 HP
- 120V (110–125VAC) single-phase compressors
- Standard PSC (permanent split capacitor) and RSIR compressor types across Whirlpool, GE, Frigidaire, LG, Samsung, and most other major brands
Important: Do NOT install this kit on LG linear/inverter compressors, or any compressor using a variable-speed inverter board (often labeled "Inverter," "Linear," "BLDC," or "Digital"). Connecting a standard hard start kit to an inverter-driven compressor can destroy the inverter control board. Check your compressor's label before ordering, or contact our support team with your model number if you're unsure.
Key Features
- 3-in-1 design combines starting relay, start capacitor, and thermal overload protector in one prewired unit
- Delivers additional starting torque to help a struggling compressor overcome startup friction and gas pressure
- Resolves "click-buzz-click," "won't start," and "trips on overload" symptoms on eligible compressors
- Rated for 1/12 to 1/5 HP compressors at 120V, 3.5A RLA
- Prewired, color-coded leads with instructions printed on the unit for straightforward installation
- Can operate with or without an existing run capacitor
- Replaces Supco RCO810, URCO810, RC0810, RC100, TJ90RCO810, AP4503019, ERP810, HS8, HS810, HS81, PCS810, and Mars 32781
- Aftermarket replacement built to OEM-equivalent quality and safety standards
Product Specifications
| Part Number | XPHS810 |
| Equivalent To | Supco RCO810 / RC0810 |
| Part Type | 3-in-1 Refrigerator/Freezer Hard Start Kit (Relay, Capacitor, Overload) |
| Condition | Aftermarket Replacement |
| HP Range | 1/12 to 1/5 HP |
| Voltage | 120V (110–125VAC) |
| Current Rating | 3.5A RLA |
| Terminal / Wire Color Code | Black = Common (C), White = Start (S), Red = Run (R) — typical; confirm against included diagram |
| Not Compatible With | LG linear/inverter compressors |
Installation Notes
Frequently Asked Questions
My compressor makes a clicking or buzzing sound and won't start — will this fix it?
A hard start kit resolves this in many cases, especially on older or worn compressors that struggle to overcome internal gas pressure at startup. However, "click-buzz-click" can also indicate a failing compressor winding or a compressor nearing end of life. If the hard start kit doesn't resolve the issue, the compressor itself may need replacement — a hard start kit can extend a marginal compressor's life but can't revive one with failed internal windings.
Can I use this on any refrigerator?
This kit works on standard PSC and RSIR compressors within the 1/12 to 1/5 HP range at 120V. It is NOT compatible with LG linear/inverter compressors or any variable-speed inverter-driven compressor — connecting it to one of those can destroy the inverter control board. Check your compressor's label for "Inverter," "Linear," "BLDC," or "Digital" before ordering.
Do I need to remove my existing start capacitor or relay first?
Yes — remove the old relay/overload assembly from the compressor terminal pins before installing this kit. The XPHS810 is designed to work with or without an existing separate run capacitor remaining in the circuit, but the old start relay and any old start capacitor should be removed and replaced by this kit, not left in place alongside it.
Is this safe to install myself?
Many DIYers install hard start kits successfully, but this repair involves a capacitor that can hold a dangerous electrical charge even after the unit is unplugged, plus correctly identifying compressor terminals. If you're not comfortable working around stored electrical charge or don't have a multimeter to confirm terminal identification, we'd recommend having a qualified technician perform this repair.
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