To Next PageTo Next PageWhat should I do if my Aerco Boiler has no flame detected during the ignition phase?
If no flame is detected during the ignition phase of your Aerco Boiler, you should check the flame rod or combustion.
How to troubleshoot a modulating fan speed failure in Aerco MODULEX EXT 321 when it fails to reach the correct speed within 30 seconds from starting of burner ignition cycle?
If the modulating fan speed fails to reach the correct speed within 30 seconds from starting the burner ignition cycle in your Aerco Boiler, check the fan wiring.
What should I do if my Aerco Boiler has low system flow rate?
If your Aerco Boiler is experiencing a low system flow rate, check the water flow or check the switch.
What to do if my Aerco Boiler has a flame signal detected before the ignition cycle?
If your Aerco Boiler detects a flame signal before the ignition cycle, disconnect the flame rod wire from the BMM. If the problem goes away, change the flame rod and/or wire. If the problem does not go away, change the BMM.
What to do if my Aerco Boiler has a flame signal detected after the burner is OFF?
If your Aerco Boiler detects a flame signal even after the burner is off, disconnect the gas valve wire from the BMM. If the failure disappears, inspect the wiring or replace the BMM. If the failure persists, check or replace the gas valve.
What to do if my Aerco MODULEX EXT 321 has insufficient gas pressure?
If your Aerco Boiler is showing signs of insufficient gas pressure, check the gas pressure or the gas pressure switch.
What to do if my Aerco Boiler displays over high water temperature detected by the heating sensor (SR) (>203°F)?
If your Aerco Boiler shows an excessively high water temperature detected by the heating sensor (SR) exceeding 203°F, you should check the flow sensor or the system pump.
What to do if my Aerco MODULEX EXT 321 has a high outlet temperature (flow sensor temperature > 203°F)?
If your Aerco Boiler displays a high outlet temperature, specifically if the flow sensor temperature exceeds 203°F, you should check the flow sensor or the system pump.
What to do if there's a loss of flame signal during Aerco MODULEX EXT 321 Boiler operation?
If you experience a loss of flame signal during the operation of your Aerco Boiler, examine the combustion and wiring.
Crucial safety precautions and guidelines to prevent injury, damage, or death.
Essential guidelines and regulations for proper boiler operation and system compliance.
Guidelines for maintaining optimal heating system water quality for boiler longevity and efficiency.
Overview of the boiler's key technical specifications, components, and design elements.
Visual representation of the boiler's physical dimensions and connection points.
Detailed technical data including flow rates, consumption, and efficiency metrics.
Important overarching warnings and precautions for boiler installation safety and compliance.
Guidelines for safely moving and securing the boiler during transport and installation.
Recommendations for selecting an appropriate and safe location for the boiler.
Instructions for making essential water, gas, and exhaust pipe connections to the boiler.
Procedures for correctly installing and maintaining the condensate evacuation system.
Guidelines and regulations for making safe and compliant electrical connections to the boiler.
Introduction to the E8 controller, its role, and main components for boiler operation.
Explanation of the BCM module for system communication, control, and redundancy.
Steps for initial setup and configuration of the E8 controller before boiler operation.
Simplified guide to setting essential boiler parameters like temperatures and programs.
Overview of user-accessible settings for customizing heating and hot water operations.
List and explanation of error codes displayed by the E8 controller for diagnostics.
Detailed fault codes and descriptions for the E8 controller's PCB, system manager, and communication.
Fault codes specific to the BCM module, including effects, corrections, and resets.
Fault codes related to the BMM module, covering burner control and ignition issues.
Procedures and safety steps for performing regular boiler inspections and maintenance.
Guidelines for cleaning the flue exhaust system and condensate drain for optimal operation.
Step-by-step instructions for safely disassembling the boiler for maintenance access.
General