Serta ST55-0257

Serta Plush Heated Mattress Pad (Model ST55-0257) - User Manual

Your guide to safe and effective use of your Serta Heated Mattress Pad.

1. Introduction

Thank you for choosing the Serta Plush Heated Mattress Pad. This manual provides important information regarding the safe operation, installation, and maintenance of your heated mattress pad. Please read all instructions carefully before use and retain this manual for future reference.

2. Important Safety Information

WARNING: To reduce the risk of burns, electric shock, fire, or injury, this product must be used in accordance with the following instructions.

  • Do not use with infants, children, incapacitated persons, or anyone insensitive to heat.
  • Do not use if the mattress pad is wet.
  • Do not use with a damaged cord or plug. If the cord or plug is damaged, contact customer support immediately.
  • Do not leave the controller covered when in use to avoid overheating. Ensure adequate ventilation around the controller.
  • Do not use pins or other metallic objects with this product. They may damage the wiring and cause electric shock or fire.
  • Do not use this product on a waterbed.
  • Do not use this product with a sofa bed, pull-out bed, or mechanically adjustable bed unless specifically designed for such use.
  • Ensure the mattress pad is properly secured to the mattress to prevent shifting, which could lead to overheating.
  • Unplug the mattress pad from the electrical outlet when not in use.
  • Do not dry clean this product. Cleaning solvents may damage the insulation of the heating element.
  • Keep all pets away from the mattress pad to prevent damage to the wiring.
  • This product is for household use only.

3. Product Overview

The Serta Plush Heated Mattress Pad is designed to provide warmth and comfort. It features a soft, plush fabric and is equipped with advanced heating technology.

Key Features:

  • Material: 100% Polyester plush fabric for comfort.
  • Heat Settings: 10 adjustable heat levels.
  • Auto Shut-Off Timer: Programmable 1-12 hour timer in 1-hour increments.
  • Deep Pocket Design: Fits mattresses up to 17 inches thick.
  • Dual Control (Queen and Larger Sizes): Independent temperature control for each side of the bed with two controllers.
  • Easy Care: Machine washable.
  • Safety Certified: ETL certified.
Serta Plush Heated Mattress Pad on a bed, showing dual heating zones and two controllers.

Image 3.1: Serta Plush Heated Mattress Pad with dual controllers, illustrating the two heating zones.

4. Setup Instructions

  1. Unpack: Carefully remove the heated mattress pad from its packaging.
  2. Placement: Lay the mattress pad flat on your mattress with the connection ports positioned at the foot of the bed. Ensure the pad is centered and smooth.
  3. Secure: The deep pocket design with 360-degree elastic will help secure the pad to your mattress. Ensure it fits snugly around the mattress corners, accommodating mattresses up to 17 inches thick.
  4. Connect Controllers:
    • Locate the connection ports at the foot of the mattress pad.
    • Plug the controller(s) securely into the corresponding port(s) on the mattress pad. Ensure a firm connection.
    • For Queen and larger sizes, two controllers are provided for independent heating zones. Connect each controller to its respective side.
  5. Power Connection: Plug the power cord(s) from the controller(s) into a standard 120V AC electrical outlet. For dual controllers, ensure each controller is plugged into a separate outlet or a suitable power strip, as they require individual power.
  6. Position Controllers: Place the controllers in an easily accessible location, such as on a nightstand, ensuring the cords are not pinched or covered. The 11-foot controller cord allows for easy reach.
Serta Heated Mattress Pad showing 15 inch deep pocket and 360 elastic for secure fit.

Image 4.1: Illustration of the 15-inch deep pocket and 360-degree elastic for a secure fit on mattresses.

5. Operating Instructions

Your Serta Heated Mattress Pad features an easy-to-use digital controller.

Close-up of Serta heated mattress pad controllers, highlighting the ON/OFF, Heat, and Timer buttons with LCD display.

Image 5.1: Detail of the Serta controller, showing the ON/OFF, Heat, and Timer buttons, and LCD display.

Controller Features:

  • ON/OFF Button: Powers the mattress pad on or off.
  • HEAT Button: Cycles through 10 heat settings (1-10). Use '+' and '-' buttons to adjust.
  • TIMER Button: Sets the auto shut-off timer from 1 to 12 hours. Use '+' and '-' buttons to adjust.
  • LCD Display: Shows current heat setting and remaining timer duration.

Using Your Heated Mattress Pad:

  1. Turn On: Press the "ON/OFF" button. The display will illuminate, and the pad will default to a low heat setting (e.g., setting 1) and an 8-hour timer.
  2. Adjust Heat: Press the "HEAT" button, then use the "+" or "-" buttons to select your desired heat level from 1 (lowest) to 10 (highest). The temperature range is approximately 78°F - 98°F, varying with ambient room temperature.
  3. Set Timer: Press the "TIMER" button, then use the "+" or "-" buttons to set the desired auto shut-off time from 1 to 12 hours. The timer starts counting down from the moment it is set.
  4. Pre-heating: For best results, turn on the mattress pad 10-15 minutes before getting into bed to allow it to pre-heat.
  5. Turn Off: Press the "ON/OFF" button to turn off the mattress pad. It will also automatically shut off once the set timer expires.

Note: For Queen and larger sizes, each controller operates its respective side independently. Adjust settings for each side as desired.

6. Care and Maintenance

Proper care will ensure the longevity and performance of your Serta Heated Mattress Pad.

Washing Instructions:

  1. Disconnect: Always disconnect the power cord from the wall outlet and detach the controller(s) from the mattress pad before washing.
  2. Pre-soak (Optional): For best results, pre-soak the mattress pad for 15 minutes in cold water with a small amount of mild detergent.
  3. Wash: Machine wash on a delicate or gentle cycle in cold water. Use a minimal amount of mild, non-bleach detergent. Do not use bleach.
  4. Rinse: Rinse thoroughly on a normal cycle.
  5. Spin: Spin dry on a normal cycle to remove excess water. Remove immediately after the spin cycle.

Drying Instructions:

  1. Tumble Dry: Tumble dry on a low or medium heat setting for approximately 5 minutes.
  2. Air Dry: Remove from the dryer and gently stretch the mattress pad to its original size. Hang over a clothesline or shower rod to finish drying. Do not use clothespins, as they may damage the internal wiring.
  3. Do Not Iron: Never iron the heated mattress pad.
  4. Ensure Dry: Ensure the mattress pad is completely dry before reconnecting the controller(s) and plugging it back into an electrical outlet.
Graphic illustrating washing and drying instructions for the heated mattress pad.

Image 6.1: Visual guide for washing and drying the Serta Heated Mattress Pad.

7. Troubleshooting Guide

If you experience issues with your Serta Heated Mattress Pad, please refer to the following common problems and solutions:

ProblemPossible CauseSolution
Mattress pad does not heat.
  • Not plugged in.
  • Controller not securely connected to pad.
  • Power outage or tripped circuit breaker.
  • Automatic shut-off activated.
  • Ensure power cord is securely plugged into a working electrical outlet.
  • Check that the controller cable is firmly connected to the mattress pad.
  • Verify power to the outlet. Reset circuit breaker if necessary.
  • Press the ON/OFF button to restart.
Pad heats unevenly or only partially.
  • Pad not laid flat or bunched up.
  • Internal wiring damage (rare).
  • Ensure the mattress pad is spread smoothly and securely on the mattress.
  • If problem persists, discontinue use and contact customer support.
Controller display is not working or flashing.
  • Loose connection.
  • Internal error.
  • Unplug the unit, disconnect the controller from the pad, wait 1 minute, then reconnect everything securely.
  • If the issue persists, contact customer support.
Pad feels too hot or not warm enough.
  • Heat setting too high/low.
  • Ambient room temperature.
  • Adjust the heat setting using the '+' and '-' buttons on the controller.
  • Note that the perceived temperature can vary based on room temperature.

If you encounter a problem not listed here, or if the suggested solutions do not resolve the issue, please contact Serta customer support.

8. Product Specifications

  • Model Name: Plush Heated Mattress Pad - Electric Bed Warmer With 10 Heat Settings Controller
  • Model Number: ST55-0257
  • Brand: Serta
  • Size: Queen (80 x 60 x 0.8 inches)
  • Material: 100% Polyester
  • Color: White
  • Item Weight: 5.62 pounds
  • Power: 120V AC (Standard Household Outlet)
  • Heat Settings: 10
  • Auto Shut-Off Timer: 1-12 hours
  • Certifications: ETL Certified
  • UPC: 022164187724
  • Manufacturer: E&E Co. Ltd DBA JLA Home

9. Warranty and Customer Support

Warranty Information:

This Serta Heated Mattress Pad comes with a 5-year limited warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship under normal household use. It does not cover damage resulting from misuse, abuse, accident, alteration, or improper care.

Please retain your proof of purchase for warranty claims.

Customer Support:

For warranty service, technical assistance, or any questions regarding your Serta Heated Mattress Pad, please contact the manufacturer, JLA Home, or Serta customer support through their official channels. Refer to the product packaging or the Serta website for the most current contact information.

When contacting support, please have your model number (ST55-0257) and proof of purchase readily available.

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