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Rheem IKONIC RTGH-SR84i User Manual

Rheem IKONIC RTGH-SR84i
92 pages
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TANKLESS
WATER HEATERS
TECHNICAL TRAINING AND
SERVICE MANUAL
RTGH-S11i RTGH-S10i RTGH-S84i
RTGH-SR11i RTGH-SR10i RTGH-SR84i
CRTGH-S11i CRTGH-S10i CRTGH-S84i
CRTGH-SR11i CRTGH-SR10i CRTGH-SR84i
RUTGH-S11i RUTGH-S10i RUTGH-S84i
RUTGH-SR11i RUTGH-SR10i RUTGH-SR84i
CRUTGH-S11i CRUTGH-SR11i
AP23209 Rev 03

Table of Contents

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Rheem IKONIC RTGH-SR84i Specifications

General IconGeneral
BrandRheem
ModelIKONIC RTGH-SR84i
CategoryWater Heater
LanguageEnglish

Summary

SAFETY AND INTRODUCTION

ELECTRICAL AND FLAMMABLE SAFETY

Crucial safety guidelines for electrical hazards and flammable materials.

WATER TEMPERATURE SAFETY

Setting water temperature to prevent scalding risks.

GENERAL INFORMATION

PRODUCT SPECIFICATIONS AND PERFORMANCE

Detailed specs, flow rates, pressure drop, and installation guidelines.

GAS, VENTING, AND COMPONENTS

Gas supply, conversion, venting, and component diagrams.

CONTROL BOARD AND DIAGNOSTICS

Control board connectors and diagnostic points for troubleshooting.

USER INTERFACE AND OPTIONS

DISPLAY MODES AND BASIC SETTINGS

Quick Look mode, Menu options, LCD display, Enable/Disable, Status.

WIFI AND NETWORK CONFIGURATION

Setting up and managing WiFi connectivity and network instances.

ADVANCED OPERATION MODES

Adjusting set point, temperature display, recirculation, and high altitude settings.

SERVICE, ALARMS, AND RESET FUNCTIONS

Accessing service menus, troubleshooting errors, and performing resets.

ERROR CODE DIAGNOSTICS

BASIC OPERATION AND FLOW ERRORS

Diagnosing no hot water, low flow, and water flow sensor issues.

IGNITION, FLAME, AND GAS SYSTEM ERRORS

Troubleshooting ignition, flame detection, and gas supply errors.

THERMISTOR, MOTOR, AND VALVE ERRORS

Diagnosing errors related to thermistors, motors, and control valves.

COMMUNICATION, CHIP, AND WIFI ERRORS

Troubleshooting errors from communication failures, chips, and WiFi.

HOW TO REMOVE COMPONENTS

EXTERNAL HOUSING AND CONNECTIONS

Removing front cover, gas-air ratio valve, water connections.

INTERNAL COMPONENTS REMOVAL

Removing igniter, blower, control board, and wiring harnesses.

FLUID PATH AND SENSOR COMPONENTS

Removing condensate trap, thermistors, orifice plates.

HOW TO CONNECT

CONNECTING TO WIFI

Step-by-step guide to connect the water heater to WiFi.

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