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Overview of fan coil unit purpose and application.
How to identify different fan coil unit models using numbering systems.
Details the layout and function of PCB components for specific models.
Explains the operational functions of the fan coil unit.
Details the components of the electric heater system.
Explains the ICM2 system for integrated controls and motor functions.
Discusses common issues and troubleshooting steps for TXVs.
Step-by-step guide for removing and replacing A-coil units.
Instructions for cleaning or replacing the air filter.
Guide for cleaning cooling coils, drain pans, and condensate drains.
Covers fan motor issues, testing, and replacement for FF1A/FF1B.
Details service procedures for the electric heater component.
Troubleshooting and service steps for the FD3A fan motor.
Service procedures specific to the FD3A electric heater.
Covers servicing and maintenance for the FG3A unit motor.
Details maintenance procedures for the FG3A blower assembly.
Explains the layout, components, and functionality of the Smart Heat PCB.
Describes the initial standby mode and checks for the system.
Details how to operate the fan continuously and related checks.
Details how the Smart Heat option controls cooling mode operations.
Explains Smart Heat operation for heating modes, including electric heat.
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