Mitsubishi Electric City Multi PEFY-P12NMAU-E4 User Manual (English)

Other manuals for Mitsubishi Electric City Multi PEFY-P12NMAU-E4

Operation Manual32 pages

Installation Manual40 pages

Technical & Service Manual48 pages

Questions and Answers:

G
Gary FloresAug 15, 2025
Why is my Mitsubishi Electric Air Conditioner blowing air, but not cooling or heating enough?
- A
  Alyssa JensenAug 16, 2025
  If your Mitsubishi Electric Air Conditioner is blowing air but not cooling or heating sufficiently, consider these possibilities: * The temperature might be improperly adjusted. Check the set temperature and inlet temperature on the liquid crystal display, and adjust the button accordingly. * The filter could be filled with dust and dirt. Clean the filter. * There might be obstacles at the air inlet and outlet of the indoor and outdoor units. Remove any obstructions. * Windows and doors might be open. Ensure they are closed.
S
Scott WrightAug 18, 2025
Why is my Mitsubishi Electric City Multi PEFY-P12NMAU-E4 not cooling enough?
- F
  Frank BellAug 19, 2025
  If your Mitsubishi Electric Air Conditioner isn't cooling or heating adequately, several factors could be at play. First, check the temperature settings. Ensure they're appropriately adjusted. Also, a dirty filter can significantly impede performance, so clean it. Obstacles blocking the indoor or outdoor units' air inlets and outlets can also be a cause; remove any obstructions. Finally, make sure all windows and doors are closed to maintain the desired temperature.
E
ehumphreyAug 21, 2025
How to fix a Mitsubishi Electric City Multi PEFY-P12NMAU-E4 Air Conditioner that does not run?
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  Andrew KirbyAug 21, 2025
  If your Mitsubishi Electric Air Conditioner does not run, there might be a few reasons: * There could be a power failure. If this is the case, press the [ON/OFF] button after the power is restored. * The power supply might be turned OFF. Turn the power supply ON. * The fuse in the power supply could be gone. Replace the fuse. * The earth leakage breaker might be gone. Put in the earth leakage breaker.
K
Kimberly AnthonyAug 25, 2025
What to do if my Mitsubishi Electric City Multi PEFY-P12NMAU-E4 Air Conditioner does not run?
- D
  daviddyerAug 25, 2025
  If your Mitsubishi Electric Air Conditioner isn't running, there might be a few reasons: * There could be a power failure. If this is the case, press the ON/OFF button after power restoration. * The power supply might be turned off. Turn the power supply ON. * The fuse in the power supply could be gone. Replace the fuse. * The earth leakage breaker might be gone. Put in the earth leakage breaker.
J
Joshua WhiteAug 27, 2025
What to do if cool or warm air does not come out of my Mitsubishi Electric City Multi PEFY-P12NMAU-E4?
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  Alejandro ChungAug 27, 2025
  If cool or warm air isn't coming out of your Mitsubishi Electric Air Conditioner, it could be due to: * The restart-preventing circuit may be in operation for 3 minutes. Wait for a while, as this circuit protects the compressor and may delay its start. * The indoor unit operation was restarted during the heating and defrosting operation. Allow the unit to complete the defrosting operation before heating starts.
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Jonathan BaileyAug 30, 2025
Why does no air come out of my Mitsubishi Electric City Multi PEFY-P12NMAU-E4?
- R
  Richard ThomasAug 30, 2025
  If cool or warm air doesn't come out of your Mitsubishi Electric Air Conditioner, it could be because the restart-preventing circuit is in operation, which lasts for 3 minutes to protect the compressor. In this case, wait for a while. Also, if the indoor unit operation was restarted during the heating and defrosting operation, wait for a while until the heating operation starts after defrosting.
B
Brooke GarciaSep 2, 2025
What to do if my Mitsubishi Electric City Multi PEFY-P12NMAU-E4 Air Conditioner runs briefly, but soon stops?
- J
  jessica71Sep 2, 2025
  If your Mitsubishi Electric Air Conditioner runs briefly and then stops, check for these issues: * Obstacles at the air inlet and outlet of the indoor and outdoor units. Remove any obstructions, then rerun the system. * The filter filled with dust and dirt. Clean the filter, then rerun the system.
P
Pamela FreySep 5, 2025
Why can I still hear the exhaust and motor in my Mitsubishi Electric City Multi PEFY-P12NMAU-E4 Air Conditioner after it stops running?
- R
  Rachel WrightSep 5, 2025
  If you hear the exhaust and motor of your Mitsubishi Electric Air Conditioner after it stops, it might be because when other indoor units are engaged in cooling operation, the machine stops after running a drain-up mechanism for 3 minutes when air-cooling operation is stopped. Wait for 3 minutes.
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Jonathan EverettSep 9, 2025
Why does my Mitsubishi Electric City Multi PEFY-P12NMAU-E4 Air Conditioner make intermittent exhaust and motor rotation sounds after stopping?
- T
  Tiffany SanchezSep 9, 2025
  The intermittent exhaust and motor sounds in your Mitsubishi Electric Air Conditioner after it stops running are likely due to drained water being brought in when other indoor units are engaged in cooling operation. If the drain water is collected, the drain-up mechanism initiates a draining operation. It should stop soon. If the noise occurs more than 2-3 times in an hour, ask for repair service.
J
Jeffrey MartinezSep 12, 2025
Why does warm air come out intermittently from my Mitsubishi Electric Air Conditioner when the thermostat is OFF or during fan operation?
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  Joseph MartinezSep 12, 2025
  If warm air comes out intermittently from your Mitsubishi Electric Air Conditioner when the thermostat is OFF or during fan operation, it is because when other indoor units are engaged in heating operation, the control valves are opened and closed from time to time to maintain the stability of the system. It should stop soon. If the room temperature rises uncomfortably high in a small room, stop operation.

Mitsubishi Electric City Multi PEFY-P12NMAU-E4 Specifications

General

Model	PEFY-P12NMAU-E4
Series	City Multi
Category	Air Conditioner
Cooling Capacity	12, 000 BTU/h
Capacity (Cooling, kW)	3.5 kW
Capacity (Heating, kW)	4.0 kW
Refrigerant	R410A
Connection Pipe Diameters (Gas/Liquid)	9.52 mm