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Service Manual
Models: 150 - 500
This manual must only be used by a
WARNING
qualified heating installer / service
technician. Read all instructions,
including this manual and the Armor
Water
Heater
Installation
and
Operation Manual, before installing.
Perform steps in the order given.
Failure to comply could result in severe
personal injury, death, or substantial
property damage.
Save this manual for future reference.
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Table of Contents
Troubleshooting
Related Manuals for Armor 500
Summarization of Contents
Service
Armor Water Heater Display and Controls
Overview of the display panel, buttons, and their functions.
Control Module Inputs
Details on the control module's inputs and their functions.
Control Module Outputs
Details on the control module's outputs and their functions.
General Operation and Access Modes
Explains unit operation, sequence, and user/installer access modes.
Display Panel Menu Access
Procedure to access menus from the display panel.
Display Panel Parameter Access
Procedure for accessing and changing parameters via the display.
Parameter Reference Table
Lists and describes all SMART SYSTEM control module parameters and access.
Maintenance
Service and Maintenance Schedules
Outlines yearly, monthly, and daily maintenance tasks for technicians and owners.
Inspect Water Heater Area and Piping
Procedures for inspecting the area, interior, condensate trap, and piping for leaks.
Check System Components
Inspection of flue, air piping, water system, expansion tank, and relief valve.
Inspect Electrical and Burner Components
Inspection of electrodes, wiring, control settings, and burner flame.
Flame Signal and Heat Exchanger Cleaning
Checking flame signal, reviewing with owner, and cleaning heat exchanger.
Troubleshooting
Control Module Fuse Checks
Procedure to check and replace control module fuses.
Troubleshooting: No Display
Steps for when the display panel shows no output.
Troubleshooting: Burner Operation
Steps for when the burner fails to operate or modulate.
Checking Temperature Sensors
How to test and replace temperature sensors using resistance values.
Troubleshooting: Noisy Operation and Pump
Causes and solutions for noisy operation and pump failure.
Troubleshooting: Fault Messages
Guides for interpreting and resolving specific fault messages like Gas Pressure SW, Flow Switch.
Troubleshooting: Flame and Ignition Faults
Steps for ignition failure and loss of flame signal.
Troubleshooting: Limit and Fan Speed Faults
Steps for high limit trips and fan speed issues.
Troubleshooting: Sensor and Temperature Faults
Steps for sensor issues and over-temperature faults.
Combustion Analysis Procedure
Step-by-step guide for performing combustion analysis.
Gas Valve Adjustment Procedure
Detailed procedures for adjusting gas valves on different models.
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