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General| Brand | Johnson Controls |
|---|---|
| Model | YICM008B21S |
| Category | Air Conditioner |
| Language | English |
General overview of the manual's content and system type.
Critical safety precautions and guidelines for operating and servicing the equipment.
Basic diagnostic steps to identify system problems.
Procedures for verifying electrical connections and power supply integrity.
Detailed guide on checking wired controller functions and status.
Systematic approach to troubleshooting system faults.
Explains how alarm codes are displayed on the wired controller.
A comprehensive list of alarm codes, their causes, and categories.
Step-by-step troubleshooting based on specific alarm codes (e.g., Float Switch).
Troubleshooting steps for communication failures between units.
Diagnosing issues related to the Inlet Air Thermistor.
Diagnosing issues related to the Outlet Air Thermistor.
Diagnosing issues related to the Liquid Pipe Thermistor.
Diagnosing issues related to the Gas Pipe Thermistor.
Troubleshooting for the Indoor Fan Motor protection device.
Addressing incorrect capacity settings for units.
Troubleshooting incorrect indoor unit numbering.
Resolving incorrect unit model code settings.
Correcting incorrect unit and refrigerant cycle number settings.
General troubleshooting for various device malfunctions.
Troubleshooting heating radiation sensor behavior.
Essential steps and checks for performing a test run after installation.
Detailed procedure for conducting a test run using the wired controller.
Checking procedures for abnormalities during test run.
Critical safety information regarding refrigerant gas leaks.
Warnings against using non-specified refrigerants due to safety risks.
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