Mitsubishi Electronics MXZ-24UV Refrigerant recovery control on heating, Outdoor fan control

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11-6.Refrigerant recovery control on heating

<Control status>

The control performs when the following status are satisfied everything;

When there is 1 unit or more not operating indoor unit on heat operation. (Excluding thermo OFF)

When discharge temperature becomes 107; or more.

When it passed 60 minutes or more since the operation has started or the last refrigerant recovery has controlled.

<Control details>

LEV opening, which adjusts to not operating indoor unit, is considered to be 80 pulse.

<Control finish status>

The control finishes either as follows. However, the LEV opening is considered to be 59 pulse.

When it passed 60 seconds since the control has started.

When the discharge temperature is 90; or less.

11-7.Outdoor fan control

Fan speed is switched according to a number of operating indoor unit and the compressor frequency.

Note

When operation, fan speed of Hi/ Low mode changes to VHi/ Hi mode by promoting those fan speeds respectively by 1 step after defrosting is operated. This control is cleared, when the compressor off.

When overheat protection of P.C. board temperature or fin temperature operates, the outdoor fan speed is fixed to VHi mode regardless of compressor frequency. Also, when the overheat protection is cleared, the fan speed is

back to normal

When the indoor coil thermistor is 57; or more on HEAT operation, fan speed is fixed to Low notch . Or, the indoor coil thermistor is 45; or less on HEAT operation, fan speed is back to normal.

11-8.Relation between main sensor and actuator

Relation between main sensor and actuator.

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Contents MXZ-24UV E1 MXZ-24UV E2 ContentsMXZ-24UV E1 MXZ-24UV E2 Technical ChangesOutdoor Unit Part Names and FunctionsOutdoor Unit Indoor / Outdoor Correspondence Table07+07 Indoor Units Combination1930 7.2 470-2300 MXZ-24UV E1 , MXZ-24UV E2 SpecificationBand Center FREQUENCIES, Hz Test conditions Cooling DB35 WB24Heating DB 0dB =Unit mm Outlines and DimensionsSG79A845H01 Wiring DiagramUnitmm Refrigerant System DiagramCDB Capacity and the Input CurvesCWB Class unit in single operation Capacity and input correction by inverter output frequencyHeat operation Or any button on remote controller33Hz Ambient temperature/ Ambient humidity% Ambient temperature33Hz CurrentOutdoor 45Hz 10 15 20 SSR61 Microprocessor ControlInverter Multi System Control LEV control Suction superheat S.H LEV opening CorrectionCool DRY Heat DRY Cool Operational frequency rangeMin Max Min Max RatedHigh pressure protection Discharge temperature protection controlHeat defrosting control Relation between main sensor and actuator Refrigerant recovery control on heatingOutdoor fan control Relation between main sensor and actuatorLead wiring Housing point Troubleshooting procedure TroubleshootingInstruction of troubleshooting Before troubleshooting, check the followingLEV Troubleshooting check tableOutdoor unit operates Trouble criterion of main parts Outdoor unit does not operate. LED display Outdoor unit does not operate. LED display display OFFWhen cooling operation does not work. Start When heating operation does not work. StartMinutes or more normal Relay P. C. board Power supply of outdoor unit wasTurned off, disconnect the connector Check the resistanceLED Return CN722 to former InfinityElectronic control P.C.board Test Point Diagram and Voltage MXZ-24UV E1 , MXZ-24UV E2MXZ-24UV E2 Noise filter P.C.board MXZ-24UV E1Outdoor FAN 230V AC Reversing Valve 230V AC Relay P.C.board MXZ-24UV E1 MXZ-24UV E2 M P.C.board MXZ-24UV E1 MXZ-24UV E2Discharge pipe brazed part Suction pipe braxed part Disassembly InstructionsOutdoor Unit Operating Procedure Photos Removing the compressor Photo1Remove the screws of the top panel , and remove it.See 1Remove the service panel.See PhotoRemoving the fan motor Removing the 4-way valve PhotoRemoving the reactor Operating Procedure PhotosOutdoor Unit Functional Parts MXZ-24UV E1 Parts List6 7 Outdoor Unit Structural Parts MXZ-24UV E1Accessory Parts MXZ-24UV E1 MXZ-24UV E2 51H-855 MXZ-24UVMXZ-24UV MAC-855SG Page Made in Japan

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.