White Rodgers 50E47-843 User Manual

Application of this type of control may cause flame
rollout on initial startup and could cause personal
injury and/or property damage.
Check product specification and cross reference before
replacing existing module. Do not use if existing module
is not listed. Use of a program key other than listed can
result in appliance malfunction.
50E47-843
Universal Hot Surface Ignition Control
PART NO. 37-6426F
Replaces 37-6426E
1042
INSTALLATION INSTRUCTIONS
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
CONTENTS
Description ................................................................... 1
Precautions .................................................................. 1
Specifications ............................................................... 2
Installation .................................................................... 2
Mounting & Wiring
Operation & Troubleshooting ......................................... 4
DESCRIPTION
PRECAUTIONS
The 50E47-843 is a universal replacement Hot Surface Ignition
(HSI) control designed for maximum compatibility with existing
systems. It features:
•A card port and six program keys to select the
Trial for Ignition Time, Retries, Prepurge and
Igniter Warm Up timings.
•AJumpertoaccommodatesystemsusingDirect
Sense (sensing through ignitor) or Indirect Sense
(using a Flame Sensor).
•LEDindicatorforquicksystemandmodulediagnosticsand
troubleshooting.
GENERAL PRECAUTION
!
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could cause
shock or fire hazard.
Do not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will damage
thermostat and could cause personal injury and/or
property damage.
WARNING
!
To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dan-
gerous operation.
This control is not intended for use in locations where
it may come in contact with water. Suitable protection
must be provided to shield the control from exposure
to water (dripping, spraying, rain, etc.).
CAUTION
!
CAUTION
!
If in doubt about whether your wiring is millivolt, line, or low volt-
age,haveitinspectedbyaqualiedheatingandairconditioning
contractor or licensed electrician.
Do not exceed the specification ratings.
Allwiringmustconformtolocalandnationalelectricalcodes
and ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could cause
the control to malfunction.
www.white-rodgers.com
www.emersonclimate.com

White Rodgers 50E47-843 Specifications

General

Brand	White Rodgers
Model	50E47-843
Category	Control Systems
Language	English

Summary

Description

Product Overview

Summarizes the features of the 50E47-843 universal replacement HSI control.

Precautions

General Precaution

Covers general safety advice for the ignition control installation and operation.

Cautionary Notes

Highlights electrical shock and equipment damage risks, and water exposure concerns.

Warning Notes

Warns against exceeding specified voltage and improper wiring for safety.

Specifications

Electrical and Operating Specs

Details electrical ratings, relay contact ratings, flame requirements, temp & humidity ranges.

Program Key Timing Reference

Provides a quick reference for program key timings and retries.

Installation

Mounting and Wiring Precautions

Includes warnings about voltage, shock hazards, and cautions for safe wiring practices.

Installation Notes

Provides guidance on control mounting, wiring, and final checks.

Installation

Terminal Wiring Cross Reference

Cross-references terminals for original controls to the replacement 50E47-843.

Installation

Install Program Key

Instructions on selecting and installing the correct program key for application.

Operation

Typical Furnace Operation

Describes the typical sequence of operation for the 50E47-843 in a furnace.

Troubleshooting

LED Indicator Diagnostics

Explains LED status codes for system diagnostics and troubleshooting.

Visual Checks

Outlines three visual checks to perform for proper system operation.

Installation

Troubleshooting Flowchart

Provides a step-by-step troubleshooting guide based on LED indications and system checks.

Troubleshooting Specific Issues

Details checks for low voltage, reversed polarity, flame sense, ignitor, and gas valve issues.