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Marley HT2024SSNW - User Manual

Marley HT2024SSNW
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HTSS Series
Smart Series™ Wall Heater
WHEN USING ELECTRIC APPLIANCES, BASIC PRECAU-
TIONS SHOULD ALWAYS BE FOLLOWED TO REDUCE THE
RISK OF FIRE, ELECTRIC SHOCK, AND INJURY TO PER-
SONS, INCLUDING THE FOLLOWING:
1. READ ALL INSTRUCTIONS before installing or using the
heater.
2. ELECTRICAL SHOCK HAZARD: Disconnect all electrical
power coming to heater at circuit breaker box or main
disconnect switch and lock in OFF position before wiring. All
wiring must be in accordance with The National Electrical
Code and applicable local codes and ordinances.
The heater must be properly connected to an effective
building ground.
3. Verify the supply voltage coming to heater is the same as
shown on the heater nameplate before energizing.
Energizing at a voltage in excess of nameplate voltage will
damage heater and void warranty.
4. This heater has hot and arcing or sparking parts inside.
Do not install or use in areas where gasoline, paint, or flam-
mable liquids are used or stored.
5. Do not install this heater upside down, sideways, in ceiling,
or floor. Install only as shown in this manual. Refer to
Mounting Clearances, page 2 for minimum clearances that
must be maintained.
6. The heater assembly must be installed in the back box pro-
vided. Do not operate the heater without the grille installed.
7. This heater is not approved for use in corrosive
atmospheres such as marine, green house or chemical
storage areas.
8. Do not use outdoors.
9. Extreme caution is necessary when any heater is used by or
near children or invalids and whenever the heater is left
operating or unattended.
10. This heater is hot when in use. To avoid burns, do not let
bare skin touch hot surfaces. Keep combustible materials,
such as furniture, pillows, bedding, papers, clothes, and
curtains away from heater. Do not block air intakes or
exhaust in any manner. For efficient and safe operation, we
recommend keeping all items at least 3 feet from front of
heater.
11. Do not insert or allow foreign objects to enter any ventilation
or exhaust opening as this may cause an electric shock or
fire, or damage the heater.
12. Should the heater become blocked or otherwise overheat, it
is provided with a manual-reset thermal safety switch and
alarm light that will activate to alert that the heater has
cycled off. If warning light is on, check to see if the reason
for the overheating can be identified. Remove any
blockage, allow heater to cool, then press Reset button.
Heater should return to normal operation. Do not continue
to use heater if it repeatedly cycles off. Have it inspected
and repaired by a qualified repair person.
11. Use this heater only as described in this manual. Any other
use not recommended by the manufacturer may cause fire,
electric shock, or injury to persons.
SAVE THESE INSTRUCTIONS
!
IMPORTANT INSTRUCTIONS
WARNING
Specifications
MODEL GRILLE WIRE
NUMBER COLOR VOLTS AMPS WATTS BTUHR SIZE
HT2024SS Gray 240 1.0 - 8.3 250 - 2000 853 - 6826 14AWG
HT2024SSNW Nothern White 240 1.0 - 8.3 250 - 2000 853 - 6826 14AWG
HT1502SS Gray 120 1.6 - 12.5 200 - 1500 682 - 5120 12AWG
HT1502SSNW Nothern White 120 1.6 - 12.5 200 - 1500 682 - 5120 12AWG
ECR 39729 05/13 5200-11170-000

Questions and Answers

  • M
    Matthew BenjaminAug 1, 2025
    Why is my Marley HT2024SSNW not responding to the remote control?
    • D
      David BrownAug 1, 2025
      Your Marley Heater might not be responding to the remote control for a few reasons. First, make sure you are within 12 feet of the heater and have a clear line of sight. If that's not the issue, the remote's battery may be weak, so try replacing it. If the problem persists, the remote control itself might be defective and need replacement.
  • B
    brett95Aug 6, 2025
    What to do if the Marley HT2024SSNW Heater display is blank?
    • J
      John MooreAug 7, 2025
      If the display on your Marley Heater is blank, there could be several reasons. First, check the circuit breaker or circuit to ensure the heater is receiving voltage. If voltage is not the issue, disconnect the power and check if the ribbon cable is disconnected and plug it in. If the cable is open, replace it. Also, check for a red light in the bottom bezel. If it's illuminated, remove the bezel and push the red reset button.
  • M
    michelleharrisAug 11, 2025
    How to fix the red alarm light on my Marley HT2024SSNW Heater?
    • R
      Rebecca WhitakerAug 11, 2025
      If the red alarm light is illuminated behind the lower bezel of your Marley Heater, it indicates a problem. The issue might be due to blocked airflow to the heater. Check for any obstructions like furniture or drapes, remove them, and then reset the limit switch located behind the lower bezel. If the fan isn't operating, check the voltage to the heater against the nameplate ratings; if correct, replace the fan motor. If the fan operates but doesn't blow enough air, remove the grille and clean any dust or dirt buildup on the fan blade.
  • P
    paula87Aug 16, 2025
    What to do if the Marley Heater touch screen does not respond?
    • B
      browncraigAug 16, 2025
      If the touch screen on your Marley Heater is not responding, it's possible that the control has been locked out. Refer to the operation manual for instructions on how to unlock the touch screen.
  • E
    eric24Aug 21, 2025
    What does E1 error mean on my Marley Heater and how to fix it?
    • S
      Samuel DorseyAug 21, 2025
      An E1 error on your Marley Heater indicates a thermistor issue. This could be due to the thermistor cable being unplugged. To resolve this, disconnect the power and verify that the thermistor cable is securely plugged in. Alternatively, the thermistor itself might be open, in which case you would need to replace it.
  • A
    April MillerAug 27, 2025
    What does E2 error mean on my Marley Heater?
    • D
      Diana BurgessAug 27, 2025
      An E2 error on your Marley Heater indicates a shorted thermistor. To resolve this, replace the thermistor.

Summary

Important Instructions

Specifications

Lists model numbers, colors, voltage, amperage, wattage, BTUHR, and wire size for the wall heaters.

Installation Instructions

Unpacking

Lists the components included in the heater carton, such as remote control, grille, and assembly parts.

Preparing Heater For Installation

Details the steps for removing the heater assembly from the back box and preparing the back box for wiring.

Installation of Back Box in New Construction

Provides guidance on securely mounting the back box to studs in new construction wall framing.

Installation Instructions Continued

Installation of Back Box in Finished Wall

Explains how to cut a wall opening and install the back box flush with the finished wall surface.

Installation of Heater Assembly

Guides on positioning and attaching the heater assembly into the installed back box.

Wiring of Heater

Details the electrical connections required for both 120V and 240V heaters, including safety warnings.

Installation Instructions Completion

Wiring for 240 Volt Heaters

Specific instructions for connecting the black and red power leads for 240V models.

Installation of Grille and Ribbon Connector

Describes how to connect the ribbon cable and attach the grille to the heater assembly.

Initial Setup Instructions (Performed by Installer)

Steps for installer to perform after assembly, including turning on power and checking indicator lights.

Operational Notice

Explains the manual-reset safety limit control and the red warning light function.

Maintenance Instructions

Cleaning

Provides annual cleaning procedures for dust and foreign material removal from the heater.

Troubleshooting Guide

Lists common problems, their causes, and recommended corrections for the heater.

Repair Parts

Repair Parts List

A detailed list of replaceable parts with their reference numbers, descriptions, and part numbers for 120V and 240V units.

Limited Warranty

How to Obtain Warranty Service and Parts

Marley HT2024SSNW Specifications

General IconGeneral
BrandMarley
ModelHT2024SSNW
CategoryHeater
LanguageEnglish

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