What to do if the AAON Controller POWER LED does not light up?
If the POWER LED on your AAON Controller doesn't light up, first ensure the power wiring is correctly connected to the board and all connections are secure. Also, verify that the transformer is receiving power. If the POWER LED still remains unlit after these checks, the controller board may be defective.
General| Brand | AAON |
|---|---|
| Model | V12100 MHGRV-X |
| Category | Controller |
| Language | English |
Provides a general overview of the MHGRV-X controller's capabilities and purpose.
Details the specific functionalities and benefits offered by the MHGRV-X controller.
Instructions for physically installing the MHGRV-X controller module.
Key considerations and requirements for wiring the MHGRV-X controller.
Diagram and instructions for connecting the MHGRV-X to an AAON unit controller.
Diagram and instructions for wiring the MHGRV-X in a stand-alone configuration.
A map detailing the available inputs and outputs on the MHGRV-X controller.
Explanation of the analog inputs like Supply Air Temperature and Reset Signal.
Explanation of binary inputs such as Reheat Enable and Overrides.
Details on the relay outputs for Fan, Compressor, and Valves.
Steps and indicators for the MHGRV-X controller's startup sequence.
Explanation of how modulating valves control hot gas flow for reheat.
Describes the different modes the MHGRV-X controller can operate in.
How the MHGRV-X functions independently without a main controller.
Operation in stand-alone mode using auxiliary inputs for valve control.
How the MHGRV-X operates as an expansion board for an AAON unit controller.
Auxiliary mode operation when communicating with a main unit controller.
Procedure to flush the reheat coil for positive oil return to the compressor.
Information on adding a second stage of reheat capacity.
How the reheat solenoid valve is activated and deactivated.
Identifies the buttons used to navigate the MHGRV-X controller display.
Visual guide to the controller's LCD display and its navigation keys.
Detailed functions assigned to each navigation key.
Diagram illustrating navigation through the controller's main menu screens.
Screens related to the main Hot Gas Reheat (MHG REHEAT) functions.
Displays for monitoring controller status and active alarms.
Specific information shown on the status screens, including mode and valve position.
Information on how alarms are displayed and their types.
Screens for viewing and adjusting setpoints for Supply Air Temperature.
Screens for manually controlling valve positions or expansion valves.
Explanation of the various LEDs for operation, status, and diagnostics.
Guidance on interpreting LED behavior to diagnose issues.
Steps to diagnose and resolve common alarms like SAT failure or communication loss.
Procedures for checking sensor wiring and resistance/voltage readings.
Detailed instructions for testing thermistor sensors using resistance and voltage.
Guide on mounting the SAT sensor in the air duct for accurate readings.
Wiring requirements based on controller and mode (Stand-Alone vs. Communication).
Configuration settings for SAT sensor using jumpers.
Step-by-step instructions for replacing an older MHGRV II controller.
Procedure for stand-alone replacement, including wiring and jumper settings.
Procedure for replacement when in communications mode.
Overview of the expansion module's capabilities and physical size.
Guidelines for installing and wiring the reheat expansion module.
Diagram showing how to wire multiple reheat expansion modules.
Describes how the expansion module operates in different modes.
Additional features specific to the reheat expansion module.
Information on LEDs and troubleshooting for the expansion module.
Answers to common questions regarding the reheat expansion module.
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