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NYC’s Top Rated and Largest Mitsubishi Certified HVAC Experts

NYC Top-Rated and Largest Mitsubishi Certified HVAC Experts

NYC’s Largest & Most Trusted Mitsubishi Certified HVAC Experts

American HVAC Corp stands as New York City’s leading Mitsubishi Certified HVAC repair and installation company. We provide expert Mitsubishi HVAC solutions for residential and commercial properties across all five boroughs—Manhattan, Brooklyn, Queens, Bronx, and Staten Island.

Our team comprises NATE and EPA-certified technicians expertly trained in the installation, maintenance, and repair of Mitsubishi equipment. Utilizing advanced Mitsubishi diagnostic tools, we rapidly identify issues and restore system performance to ensure your comfort is uninterrupted.

Mitsubishi Certified HVAC Services

American HVAC Corp offers full-service Mitsubishi HVAC installation, repair, and maintenance for residential and commercial customers. We cover a wide range of Mitsubishi product lines, including:

  • M-Series Mitsubishi HVAC Units
    Flexible single-zone and multi-zone systems with various indoor unit styles—wall-mounted, floor-mounted, ceiling cassette, and ducted options—engineered to fit diverse space requirements.
  • P-Series Mitsubishi HVAC Units
    Efficient heating and cooling with intelli-HEAT dual-fuel operation, servicing popular models such as PAA, PCA, PEAD, PVA, SLZ, SEZ, SVZ, PLA, PKA, PUZ, PUY, SUZ, and PUZ-HA.
  • Mitsubishi Commercial HVAC Line
    • City Multi VRF Systems: Sophisticated multi-zone temperature control tailored for commercial buildings.
    • SMART MULTI Systems: Space-efficient multi-zone HVAC solutions.
    • R2-Series, Y-Series, S-Series: Durable commercial-grade units designed for reliability.
    • Heat2O Hydronic Systems: Innovative hydronic heating for effective warmth.

American HVAC Corp is the NYC leader in installation and repair of Mitsubishi City Multi VRF systems throughout all boroughs.

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mitsubishi city multi installation essentials hvac contractor in nyc
mitsubishi m and p series installation & service essentials hvac contractor in nyc
mitsubishi m and p series installation & service essentials hvac contractor in nyc

Mitsubishi Mini Split Repair & Installation by American HVAC Corp

We specialize in Mitsubishi Mini Split systems — highly efficient ductless HVAC solutions ideal for NYC’s varied residential and commercial settings. These systems provide customizable heating and cooling without the need for ductwork, perfect for spaces where traditional HVAC installation is impractical.

Our services include:

  • Expert installation of Mitsubishi Mini Split units optimized for your specific space and comfort needs.
  • Precise diagnosis and repair of common Mini Split issues such as refrigerant leaks, compressor failures, sensor malfunctions, and communication errors.
  • Routine maintenance to enhance efficiency, reliability, and extend system lifespan.

Using advanced Mitsubishi diagnostic equipment, our certified technicians swiftly troubleshoot Mini Split problems, minimizing downtime and restoring comfort fast.

Mitsubishi HVAC Error Codes & Troubleshooting Guide
Mitsubishi HVAC systems use LED blinking signals and diagnostic error codes to communicate system faults. Recognizing these alerts helps identify problems early, though professional diagnosis and repair are recommended.

Common Mitsubishi HVAC Error Codes

CodeDescription
P1Intake sensor error
P2–P9Pipe sensor error (liquid or 2-phase)
P4Drain sensor error
P5Drain pump error
P6Freezing/overheating safeguard operation
P8Pipe temperature error
E0Remote controller signal error
E6, E7Indoor/outdoor unit communication error
E9Outdoor unit communication error
FbIndoor unit control system error
U4Outdoor unit transmission error
U5Abnormal heatsink temperature
U6Compressor overcurrent/power module fault
U7Superheat abnormality (low discharge temp)
U8Outdoor fan safeguard stop
U9Voltage or current sensor abnormality
PAForced compressor error
EECommunication error between units

Selected 4-Digit Mitsubishi HVAC Error Codes

CodeDescription
0403Serial communication error
0900Test run
1102Discharge temperature fault
1301Low-pressure fault
1302High-pressure fault
1500Refrigerant overcharge
2500Drain sensor submerged
2502Drain pump fault
2503Drain sensor fault
2600Water leak
4102Open phase
4106Transmission power supply fault
4115Power supply sync error
4116RPM/motor error
4220Abnormal bus voltage
4225Low bus voltage
4230/4260Heatsink overheat protection activated
4240Overload protection activated
4250Overcurrent protection activated
4255Outdoor unit fan error
5101Temperature sensor fault
5102Return air thermistor fault
5110Outdoor inverter heatsink thermistor error
5201Pressure sensor fault
5301Current sensor fault
5701Loose float switch
6201Remote controller issue
6600Address overlap
6601Polarity setting error
6602Transmission processor hardware error
6603Transmission line busy
6606Communication fault
6607No ACK
6608No response
6831/6834MA controller signal reception error
6832/6833MA controller communication fault
7100Total capacity error
7101Capacity code setting error
7102Wrong number of connected units
7105Address setting error
7106Attribute setting error
7110Signal transmission error
7111Remote controller sensor fault
7113Function setting error
7117Model setting error
7130Incompatible unit combination

Expanded Mitsubishi HVAC Error Codes & Troubleshooting Guide

Additional error codes technicians frequently encounter:

CodeDescriptionNotes / Troubleshooting Tips
C0Outdoor unit fan motor lockedInspect fan motor for obstruction or failure
C1Outdoor unit fan motor abnormal currentCheck fan motor winding and capacitor
C2Outdoor unit compressor motor abnormal currentPossible motor winding damage or faults
C3Compressor overheatingCheck refrigerant and airflow
C4Compressor motor lockedPossible seizure; inspect mechanical parts
C5Compressor current overloadPotential short circuit or stuck compressor
C6Compressor inverter faultInverter board issues; repair may be needed
C7Outdoor unit inverter temperature sensor errorCheck sensor wiring and unit sensor
E1Outdoor unit discharge pipe temperature sensor errorAffects defrost; inspect sensor and wiring
E2Outdoor unit suction pipe temperature sensor errorMay cause compressor malfunction
E3Outdoor unit ambient temperature sensor errorAffects performance monitoring
F0Indoor unit filter sign error or clogged filterUser should clean or replace filters
F1Indoor unit room temperature sensor errorCheck sensor and wiring
F2Indoor unit evaporator temperature sensor errorPrevents freeze damage
F3Indoor unit defrost temperature sensor errorCan cause defrost cycle problems
F4Indoor unit drainage pump errorCheck pump and drainage lines
F5Indoor unit fan motor lockedInspect fan motor and blades
F6Indoor unit communication errorCheck wiring between indoor/outdoor units
F7Indoor unit PCB malfunctionControl board may require replacement
F8Indoor unit overcurrent errorPossible fan motor overcurrent
H1Defrost control errorSensor or control board issue
H2Heat exchanger temperature sensor errorSensor failure
L1Indoor unit liquid pipe temperature sensor errorAffects refrigerant temp readings
L2Indoor unit gas pipe temperature sensor errorImpacts refrigerant monitoring
P0Outdoor unit power supply errorVoltage drop or phase loss
P1Outdoor unit intake air sensor errorSensor problem affecting air intake temp
P2Outdoor unit refrigerant leak detectedCall for leak inspection
P3Outdoor unit inverter PCB faultMay require inverter board repair/replacement
P4Outdoor unit drain sensor errorSensor malfunction
U1Indoor/outdoor unit communication errorCheck wiring and communication lines
U2Outdoor unit inverter failureRequires technician service

Common Mitsubishi Mini Split Error Codes

CodeDescriptionTroubleshooting Tips
E4Outdoor unit fan motor speed errorInspect motor and capacitor
E5Indoor unit fan motor speed errorCheck indoor fan motor and PCB
E10EEPROM data errorMay require system reset or repair
E20Indoor unit communication errorVerify wiring and connections
E30Outdoor unit communication errorInspect outdoor control board wiring

Mitsubishi HVAC LED Blinking Codes Explained

  • 1 blink: Indoor sensor error or indoor fan motor lock
  • 2 blinks: Indoor EEPROM error or communication failure
  • 3 blinks: Outdoor sensor error or high-pressure protection
  • 4 blinks: Outdoor fan motor error
  • 5 blinks: Compressor overload protection triggered
  • 6 blinks: Communication failure between indoor and outdoor units
  • 7 blinks: Refrigerant leak or abnormal pressure detected
  • 8 blinks: Freeze protection active
  • 9 blinks: Power supply error or phase imbalance

Blinking Patterns:

  • Rapid blinking usually indicates communication errors between units.
  • Slow blinking often signals sensor issues.
  • Alternating blinking may indicate compressor or fan motor faults.

Our Mitsubishi Certified technicians expertly interpret these signals using proprietary diagnostic tools to identify and resolve root causes promptly.

Why Choose American HVAC Corp for Mitsubishi Certified HVAC?

  • Certified Technicians: Our experts hold NATE and EPA certifications along with specialized Mitsubishi training.
  • Advanced Diagnostic Tools: We employ Mitsubishi proprietary equipment for precise troubleshooting.
  • City Multi VRF Specialists: Extensive NYC experience with Mitsubishi’s commercial VRF systems.
  • Reliable & Prompt Service: Fast diagnostics and repairs minimize downtime.
  • Full NYC Coverage: Serving Manhattan, Brooklyn, Queens, Bronx, and Staten Island with 12 fully stocked service vans.

Contact American HVAC Corp Today

For expert Mitsubishi Certified HVAC repair, installation, and maintenance in NYC, trust American HVAC Corp. Schedule service with our certified technicians to ensure fast, dependable comfort restoration.

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