Mitsubishi Electronics MXZ-24UV

Outdoor unit does not operate. (LED display: display OFF)

A Check of power supply

Start

Check the connecting of main circuit parts and connector (CN501: I.P.M P. C. board,

CN 801: Electronic control P. C. board, CN554: relay P. C. board)


Turn on power supply

Is there voltage of 230V AC in the		No
power supply terminal block?
	Yes

Is there voltage of 310V DC - 340V DC		No
across the smoothing capacity?

Yes

Replace the electronic control P. C. board.

Check the power supply cable.

Is there voltage of 230V AC across the output cable (LD63, LD64) in the noise filter P. C. board?

Yes

Is there voltage of 230V AC across the input terminal part in the diode module (DS61)?

Yes

Replace the noise filter P. C. board

Replace the current limiting resistor.

w When replacing, check the

connection of connector

CN720 in the outdoor

Check the main circuit parts and replace it.

Outdoor unit does not operate. (LED display: 00)

electronic control P. C.

board

B Check of serial signal

Start

1.Check the indoor unit with referring to the indoor unit service manual

2.Turn off the power supply of the indoor and outdoor unit and return the indoor/ outdoor unit connecting wire to former original.

3.Check the connection of indoor/ outdoor unit connecting wire in the outdoor unit terminal block, and check the connection of the connector (CN601: unit A, CN 602: unit B, CN603: unit C,) in the electronic control P. C. board

4.Disconnect the lead wire to the compressor. Turn on the power supply (indoor/ outdoor unit) 3 minutes later, EMERGENCY OPERATION starts.

Is there voltage of 5V DC - 10V DC between		No
Is there voltage of 5V DC - 10V DC between		No	Replace the electronic control P. C. board.
No. 3 (+) and N (-) in the outdoor terminal block.			Replace the electronic control P. C. board.
No. 3 (+) and N (-) in the outdoor terminal block.
	Yes
	Yes

Recheck a connected circumstance of the indoor/ outdoor unit connecting wire.

MXZ-24UV - E2, MXZ-24UV specifications

Mitsubishi Electronics has established itself as a leader in the HVAC (heating, ventilation, and air conditioning) industry with its MXZ-24UV and MXZ-24UV - E2 models. These multi-zone heat pump systems are designed to provide exceptional efficiency, comfort, and versatility for residential and commercial applications.

One of the main features of the MXZ-24UV is its ability to effectively cool and heat multiple rooms simultaneously. This system allows for the connection of up to four indoor units, enabling users to customize the climate in different spaces while maintaining energy efficiency. This zoning capability ensures you can maintain the perfect temperature in each room according to the occupants' preferences.

The MXZ-24UV incorporates advanced inverter technology, which allows the compressor to adjust its speed based on the required heating or cooling demand. This results in reduced energy consumption compared to conventional systems, providing significant savings on energy bills while also promoting a more consistent indoor temperature. The inverter-driven compressor operates quietly and efficiently, making it a suitable choice for residential areas.

Additionally, these models are equipped with a range of smart technologies. The built-in Wi-Fi capability allows homeowners to control the system remotely using a smartphone or tablet. This feature adds convenience and flexibility, enabling users to adjust settings from anywhere, ensuring their space is at the desired temperature upon arrival.

Durability is another essential characteristic of the MXZ-24UV and MXZ-24UV - E2 models. Mitsubishi has designed these units to withstand various weather conditions, enhancing longevity and reliability. The units feature a robust construction that minimizes wear and tear while ensuring dependable performance year after year.

Moreover, the system has a variety of indoor unit options, including wall-mounted, ceiling-mounted, and floor-mounted designs. This versatility makes it easy to integrate into different architectural styles and preferences, ensuring both aesthetics and functionality.

In summary, the Mitsubishi Electronics MXZ-24UV and MXZ-24UV - E2 models are designed for those seeking energy efficiency, flexibility, and durability in a multi-zone heating and cooling system. With advanced inverter technology, smart home capabilities, and a range of indoor unit styles, these systems offer exceptional comfort while minimizing energy costs, making them a top choice in the HVAC market.