Water Heater Upper Thermostat, 5600-211, 5600-311, WH6-4, WH10A

Water Heater Upper Thermostat | OEM‑Compatible | WH10A | 110–170°F Adjustable

Brand New – WH10A Electric Water Heater Upper Thermostat

This premium OEM‑style WH10A upper thermostat provides precise temperature control for electric water heaters. Featuring an adjustable 110–170°F temperature range and a built‑in Hi‑Limit Reset Button (L180), this thermostat ensures safe, reliable operation. Designed specifically for the upper heating element, it regulates the primary heating cycle and helps maintain consistent hot water output.

Engineered by APCOM, the industry leader in water‑heater controls, this thermostat offers superior sensitivity and accuracy thanks to its patented encapsulated bimetal sensor design.

⚙️ Product Features

• Adjustable temperature range: 110–170°F
• Hi‑Limit Reset Button (L180) for added safety
• OEM‑style replacement for WH10A
• Designed for upper heating element control
• Encapsulated bimetal sensor for enhanced accuracy
• Slotted adjustment knob for easy temperature setting
• Tear‑drop wiring terminals for faster, secure installation
• Condition: Brand New – Unused

Replaces Part Numbers

WH6‑4 (Thermodisc), 5600‑211, 5600‑311

Fits Models

Model list not provided — compatible with electric water heaters using WH10A upper thermostats.
Always verify compatibility with your exact model number before purchase.

Common Fixes

• No hot water or inconsistent temperature
• Water overheating or tripping the high‑limit switch
• Breaker tripping due to thermostat failure
• Upper element not activating
• Thermostat stuck in ON or OFF position

️ Installation Tips

• Turn off power at the breaker before servicing
• Remove access panel and insulation to reach thermostat
• Take a photo of wiring before disconnecting
• Ensure thermostat sits flush against tank surface for accurate sensing
• Set temperature using the slotted knob (manufacturer recommends ~120°F)
• Restore power and test for consistent heating

Upgrade your water heater’s performance with this accurate, reliable WH10A upper thermostat engineered by APCOM.