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General| Brand | Mitsubishi Electric |
|---|---|
| Model | MSZ-WR12NA-U2 |
| Category | Air Conditioner |
| Language | English |
Instructions for timer short mode and modifying remote controller for individual unit operation.
Details on the auto restart function and how to disable it by modifying jumper wires.
Guide to using the emergency operation switch for testing and service diagnostics.
Safety guidelines and initial checks before performing troubleshooting.
Introduction to the function that allows recalling memorized failure details.
Detailed flowchart for initiating and interpreting the failure mode recall function.
Table detailing indoor unit failure modes, conditions, and remedies based on indicator lamp blinking.
A detailed flowchart for diagnosing various operational issues by checking unit status and signals.
A table detailing specific indoor unit faults, symptoms, conditions, and recommended remedies.
Guidelines for checking resistance and function of key components like thermistors and motors.
Step-by-step diagnostic procedure for issues related to the indoor fan motor.
Procedures to verify remote controller operation and its communication with the indoor unit.
Diagnostic steps for indoor P.C. boards and fan motor, involving resistance and voltage checks.
Detailed steps for checking miswiring and serial signal errors for MSZ-WR09/12NA models.
Detailed steps for checking miswiring and serial signal errors for MSZ-WR18/24NA models.
