Mitsubishi Electric PEA Series User Manual (English)

Questions and Answers:

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gordon61Aug 2, 2025
What to do if my Mitsubishi Electric Air Conditioner is freezing/overheating?
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  Michael BushAug 2, 2025
  If your Mitsubishi Electric Air Conditioner is freezing or overheating (in cooling or drying mode), the following could be the cause: a clogged filter restricting airflow, a short cycle of the air path, low-load operation beyond the tolerance range. There may also be a defective indoor fan motor or outdoor fan control, overcharged refrigerant, or clogs in the refrigerant circuit. Check for filter clogs and remove any shields. If necessary, measure the resistance of the fan motor's winding and the output voltage of the fan's connector on the indoor controller board, which should be normal when AC 220~240V is detected while the fan motor is connected. Also, check the outdoor fan motor and the operating condition of the refrigerant circuit.
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twellsAug 6, 2025
Why does my Mitsubishi Electric Air Conditioner show a remote controller transmission error (E0)?
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  Samantha JonesAug 6, 2025
  A remote controller transmission error (E0) on your Mitsubishi Electric Air Conditioner could be due to several reasons: a contact failure in the remote controller's transmission wire, all remote controllers being set as “sub” (in which case E4 is displayed at LED on the outdoor controller circuit board), mis-wiring of the remote controller, a defective transmitting/receiving circuit in the remote controller or the indoor controller board of refrigerant address “0”, or noise entering the remote controller's transmission wire. Check for disconnection or looseness in the indoor unit or remote controller's transmission wire. Set one of the remote controllers as “main”. Also, check the wiring of the remote controller.
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gbakerAug 11, 2025
What to do if my Mitsubishi Electric PEA has an indoor/outdoor unit communication error?
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  brady65Aug 11, 2025
  If your Mitsubishi Electric Air Conditioner is experiencing an indoor/outdoor unit communication error, it could be due to a defective transmitting/receiving circuit of the indoor controller board, noise entering the power supply, or noise entering the outdoor control wire. Turn the power off, and on again to check. If the abnormality persists, replace the indoor controller board.
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pdukeAug 15, 2025
How to troubleshoot abnormality of room temperature thermistor (TH1) in Mitsubishi Electric PEA Air Conditioner?
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  amywhiteAug 15, 2025
  An abnormality in the room temperature thermistor (TH1) of your Mitsubishi Electric Air Conditioner may be caused by defective thermistor characteristics, contact failure of connector (CN20) on the indoor controller board, breaking of wire or contact failure of thermistor wiring, or a defective indoor controller board. Check the resistance value of the thermistor. Also, check for contact failure of connector (CN20) on the indoor controller board, and ensure it's properly inserted. Check the room temperature display on the remote controller and replace the indoor controller board if there is an abnormal difference with the actual room temperature. Turn the power off, and on again to operate after check.
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Leslie RichmondAug 27, 2025
How to fix abnormality of drain sensor (DS) in Mitsubishi Electric PEA?
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  harrismelissaAug 28, 2025
  An abnormality in the drain sensor (DS) of your Mitsubishi Electric Air Conditioner could be due to defective thermistor characteristics, contact failure of connector (CN31) on the indoor controller board, breaking of wire or contact failure of drain sensor wiring or a defective indoor controller board. Check the resistance value of the thermistor. Also, check for contact failure of connector (CN31) on the indoor controller board, and ensure it's properly inserted. Replace the indoor controller board if the drain pump operates with the line of drain sensor connector CN31-1 and 2 is short-circuited, and the abnormality reappears. Turn the power off, and on again to operate after check.