Table of Contents
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Troubleshooting
Guide
This guide contains information for
identifying and correcting issues
that may arise.
Applicable Models:
i200
iQ251
i200P
iQ251D
i250
iQ751
i250P
iQ1001
i200X
iQ1501
i201X
i250X
i251X
Product Support / Warranty
If the water heater requires additional service, please use one of the following options
for contacting Intellihot Technical Support:
- Call: 309-473-8040 (toll-free 1-877-835-1705), and press 3
- Email: support@intellihot.com
When you contact Technical Support, please have the following information ready:
- Model Number
- Serial Number
- Date purchase / Date installed
- Installation location & application
- Error code (if any) or other problem with the unit
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Table of Contents
Related Manuals for Intellihot iQ1501
Summarization of Contents
Intellihot Troubleshooting Guide Overview
Applicable Models
Lists all Intellihot models covered by this troubleshooting guide.
Product Support and Warranty Information
Contact information for technical assistance and warranty claims.
Error Code and Issue Diagnostics
Error Code List
A list of error codes and their corresponding pages for troubleshooting.
Suggested Tool List
Essential tools recommended for troubleshooting and repairs.
Specific Troubleshooting Procedures
E1-Blower Speed Fault Troubleshooting
Diagnostic flowchart for blower speed issues and related checks.
E3-Blocked Flue Diagnosis
Troubleshooting steps for a blocked flue condition.
E7-Ignition Failure Resolution
Guide to diagnose and resolve ignition failure errors.
E9-Temperature Sensor Shorted Fix
Steps to identify and fix a shorted temperature sensor.
EA-Temp Sensor Open Circuit Solution
Troubleshooting for an open circuit temperature sensor.
EC-Flue Temperature Exceeded Guide
Procedure for diagnosing and resolving flue temperature limit issues.
Ed-Heat Exchanger Outlet Temperature Exceeded
Steps to address overheating in the heat exchanger outlet.
Flashing Icon Error Resolution
Procedure for resolving general flashing icon errors on the unit.
Cascading Icon Flashing Troubleshooting
Troubleshooting for cascading icon flashing in multi-unit systems.
Recirculation Icon Flashing Diagnosis
Steps to diagnose and fix recirculation icon flashing on pump models.
Blank or Illegible Display Fix
Guide for troubleshooting a blank or unreadable display.
Breaker Tripped (Over-Load) Guide
Troubleshooting steps for tripped circuit breakers due to overload.
Dead Unit - No Power Up Solution
Diagnostic guide for a unit that shows no power.
No Hot Water Troubleshooting
Troubleshooting steps for when the unit does not produce hot water.
Rough Ignition Problem Solving
Steps to diagnose and correct rough ignition.
Rumbling Operation Troubleshooting
Troubleshooting guide for operational rumbling sounds.
Water Leaks Identification
Procedure for identifying and fixing water leaks.
Component Replacements and Diagrams
Blower Replacement Procedure
Detailed steps for replacing the unit's blower assembly.
Gas Valve Replacement
Instructions for safely replacing the gas valve.
Electrode Replacement
Guide for installing a new ignition electrode.
Controller Pin Layout
Visual representation of the controller's pin assignments.
Wiring Diagram (Wall-Hung Units)
Electrical wiring schematic for wall-hung models.
Wiring Diagram (Floor-Mount Units)
Electrical wiring schematic for floor-mount models.
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