To Next PageTo Next PageWhat to do if my Mitsubishi Electric MCFH-18NV-E3 flashes 5 times?
If your Mitsubishi Electric Air Conditioner flashes 5 times, it indicates a problem with the outdoor power system. Check the inverter output and the compressor.
Why does my Mitsubishi Electric MCFH-18NV-E3 Air Conditioner flash 10 times?
If your Mitsubishi Electric Air Conditioner flashes 10 times, it indicates an outdoor refrigerant system error. Check the amount of gas, the outdoor control P.C. board, and the contact of LEV board connectors.
What does it mean when my Mitsubishi Electric Air Conditioner flashes on and off?
If your Mitsubishi Electric Air Conditioner flashes on and off at 0.5-second intervals, it indicates indoor/outdoor unit mis-wiring. Refer to E "How to check mis-wiring and serial signal error (When outdoor unit doesn't work)" on page 49.
What does a 1-time flash mean on a Mitsubishi Electric MCFH-18NV-E3 Air Conditioner?
If your Mitsubishi Electric Air Conditioner flashes once, it indicates a trouble of serial signal between the outdoor and indoor units. Refer to E "How to check mis-wiring and serial signal error (When outdoor unit doesn't work)" on page 49.
What does it mean when my Mitsubishi Electric MCFH-18NV-E3 Air Conditioner flashes 2 times?
If your Mitsubishi Electric Air Conditioner flashes 2 times, it indicates a problem with the room temperature or indoor coil temperature thermistor of the indoor unit. Check the room temperature thermistor and indoor coil temperature thermistor. Refer to "Test point diagram and voltage" on page 52.
What does it mean when my Mitsubishi Electric MCFH-18NV-E3 Air Conditioner flashes 6 times?
If your Mitsubishi Electric Air Conditioner flashes 6 times, it indicates a problem with the outdoor thermistor of the outdoor unit. Refer to H "Check of outdoor thermistor".
What does it mean when my Mitsubishi Electric MCFH-18NV-E3 flashes 7 times?
If your Mitsubishi Electric Air Conditioner flashes 7 times, it indicates a problem with the control P.C. board of the outdoor unit. Check the outdoor control P.C. board.
What to do if Mitsubishi Electric MCFH-18NV-E3 indoor unit doesn't operate when pressing EMERGENCY OPERATION switch?
If the indoor unit of your Mitsubishi Electric Air Conditioner doesn't operate when the EMERGENCY OPERATION switch is pressed, you should check the indoor/outdoor connecting wire. Refer to C "Check of indoor electronic control P.C. board" on page 47.
General| Brand | Mitsubishi Electric |
|---|---|
| Model | MCFH-18NV-E3 |
| Category | Air Conditioner |
| Language | English |
Notes changes and additions made in the revised edition of the manual.
Details technical modifications made across different model series and versions.
Identifies and describes parts of the indoor unit, including accessories.
Explains the layout, buttons, and display functions of the wireless remote controller.
Provides detailed technical data for both indoor and outdoor units, including capacity, power, and dimensions.
Presents octave band sound pressure levels for various models under different operating conditions.
Shows detailed dimensions and installation clearances for the indoor unit.
Details the necessary space and clearance requirements for installing the outdoor unit.
Illustrates the electrical connections for the indoor unit's components and power supply.
Illustrates the electrical connections for the outdoor unit's components and power supply.
Depicts the refrigerant circuits for cooling and heating operations for different models.
Details maximum refrigerant piping lengths, height differences, and additional charge requirements.
Presents cooling capacity, total input, and air flow based on temperature conditions.
Presents heating capacity and total input based on temperature conditions.
Shows outdoor low pressure and unit current during cooling operation versus ambient conditions.
Details outdoor unit current during heating operation based on ambient temperature and humidity.
Explains remote controller functions, indicator lamps, and basic operation modes.
Details the operation of the 'I FEEL CONTROL' mode, including temperature settings and fan control.
Explains system controls, fan speed, and protection features for DRY and HEAT modes.
Details the conditions, timing, and controls for the automatic defrosting operation.
Explains R.V. coil control and temperature/fan settings for COOL, DRY, and HEAT modes.
Describes how to set temperature and fan speed for COOL mode operation.
Explains temperature setting determination and operation for DRY mode.
Details temperature range and settings for HEAT mode operation.
Explains the auto vane operation modes, positioning, and special conditions like dew prevention.
Guides on setting, cancelling, and using the ON/OFF timers and program timer functions.
Details the procedure for performing emergency test operations and indicator functions.
Explains the auto restart function after power failure and its limitations.
Describes how to activate forced defrosting and modify defrost settings via jumpers.
Explains how to shorten timer delays and modify P.C. boards for multi-unit operation.
Provides essential safety precautions and an overview of the troubleshooting process.
Outlines a systematic approach to diagnosing malfunctions based on indicator light flash codes.
Lists resistance values for key components like thermistors, motors, and coils for diagnosing faults.
Guides on diagnosing issues with the indoor fan motor and remote controller communication.
Details checks for indoor P.C. board components and initial outdoor unit operation.
Provides steps to identify and resolve mis-wiring or serial signal errors affecting outdoor unit operation.
Guides on diagnosing issues with compressor/fan stopping and R.V. coil mode selection.
Explains how to check defrost and ambient thermistors for faults and their impact on unit operation.
Provides test points and voltage readings on the indoor electronic control P.C. board for diagnosis.
Identifies key components and test points on the outdoor deicer P.C. board, including thermistor characteristics.
Step-by-step guide to safely remove the electronic control P.C. board from the indoor unit.
Provides instructions for disassembling and removing the indoor fan motor and its components.
Details the steps required to remove the indoor heat exchanger, including panel and insulation removal.
Guides on safely removing the outer cabinet panels of the MUCFH-13NV outdoor unit.
Provides instructions for disconnecting and removing the deicer P.C. board from the outdoor unit.
Details the procedure for removing the propeller fan and the outdoor fan motor assembly.
Provides step-by-step instructions for safely removing the compressor, including refrigerant recovery.
Guides on safely removing the cabinet panels for the MUCFH-18NV outdoor unit.
Details the process of disconnecting and removing the deicer P.C. board for the MUCFH-18NV model.
Provides instructions for removing the fan motor assembly from the MUCFH-18NV outdoor unit.
Details the procedure for safely removing the compressor from the MUCFH-18NV outdoor unit.
Guides on safely removing the cabinet panels for the MUCFH-24NV outdoor unit.
Details the process of disconnecting and removing the deicer P.C. board for the MUCFH-24NV model.
Provides instructions for removing the fan motor assembly from the MUCFH-24NV outdoor unit.
Details steps for removing the heat exchanger and compressor from the MUCFH-24NV outdoor unit.
Lists structural components of the indoor unit with part numbers and quantities for various models.
Lists electrical components, accessories, and remote controller parts for the indoor unit.
Lists structural components for MUCFH-13NV outdoor units with part numbers and quantities.
Lists electrical, functional, and accessory parts for the MUCFH-13NV outdoor unit.
Lists structural components for MUCFH-18NV outdoor units with part numbers and quantities.
Lists structural components for MUCFH-24NV outdoor units with part numbers and quantities.
Provides a detailed list of structural components for MUCFH-24NV outdoor units with part numbers.
Lists accessory items for the MUCFH-24NV outdoor unit.
Lists the structural components of the MUCFH-24NV outdoor unit with their corresponding part numbers.
Lists the accessory parts available for the MUCFH-24NV outdoor unit.
Continues the detailed listing of structural components for MUCFH-24NV outdoor units.
Details the function, replacement, and specifications of the air cleaning filter.
Explains the cleaning and replacement procedure for the deodorizing filter.
