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General| Brand | Mitsubishi Electric |
|---|---|
| Model | SLZ-KF12NA1 |
| Category | Heat Pump |
| Language | English |
General safety rules to follow before performing any service on the unit, emphasizing disconnecting power.
Specific precautions for handling R410A refrigerant, including proper tools and avoiding contamination.
Lists 24 critical warnings for service technicians to prevent hazards, unit damage, and ensure proper operation.
Provides essential cautions for service, including refrigerant recovery, air release, and filter drier usage.
Details the correct procedure for charging refrigerant directly from a cylinder, emphasizing syphon type and vertical orientation.
Summarizes actions for reoccurring and non-reoccurring troubles based on displayed or logged check codes.
Explains how to use the remote controller's self-diagnosis feature to identify error codes through beeper sounds and indicator lamp patterns.
Lists specific error codes (P1-P5, P6, P8, P9, PL, E0, E4) detected by the indoor unit and their corresponding symptoms.
Lists error codes (E9, UP, U3, U4, UF, U2, U1, U5, U8, U6, U7, U9) detected by units other than the indoor unit and their symptoms.
Details potential causes for unit malfunctions, such as LED status, wiring issues, and refrigerant address settings.
Provides a table matching check codes (P1, P2, P4, P5) to their causes and recommended countermeasures.
Details troubleshooting for P6 (freezing/overheating protection) and P8 (pipe temperature) errors, including causes and counter-measures.
Covers troubleshooting for PL (abnormal refrigerant circuit) and E0/E4 (remote controller transmission/signal error) codes.
Addresses E3/E5 (remote controller transmission error), E6/E7 (indoor/outdoor communication error), and FB/E1/E2 (controller board errors).
Details troubleshooting for PA (forced compressor stop due to water leakage) and PB(Pb) (fan motor trouble) codes.
Addresses problems related to LED status (LED2 off/blinking) on the indoor controller board and potential causes like power supply or wiring.
Details specific test points on the indoor controller board for diagnosing various components like sensors, motors, and power supply.
Provides methods for checking and troubleshooting main parts like thermistors, vane motor, drain pump, and float switch.
Details thermistor characteristic graphs and the procedure for checking the DC fan motor and its controller board.
