Air conditioning 1x1 Mitsubishi Electric MSZ-HR42VFK; set and technical information, range illustration — Uniclima

New Mitsubishi Electric Split wall-mounted 1×1

Mitsubishi Electric MSZ-HR42VFK + MUZ-HR42VF split air conditioning

To air condition a room with a wall-mounted split: 3,612 frigories/h (4.2 kW) nominal in cooling.

Pipe: 1/4″ / 3/8″
Wi-Fi: Yes, included.
kcal/h: ≈ 3.612
Refrigerant: R32

Description

To climatize a room with a wall-mounted split: 3,612 frigories/h (4.2 kW) nominal in cooling. Mitsubishi Electric MSZ-HR42VFK + MUZ-HR42VF includes one indoor and one outdoor unit; it is not a system for distributing cooling independently between multiple rooms. Check the load of the room and the installation space before choosing. Installation sold separately.

The choice of power depends on the space, its orientation, and its insulation. A split unit located in one room does not guarantee the same temperature in adjacent rooms; to serve multiple rooms, it is advisable to consider a multisplit system or a ducted installation.

Set and compatibility

What does the Mitsubishi Electric HR42VFK include?

Split pair 1×1: one indoor unit, one outdoor unit, and its remote control. It does not confirm combinations with other units or multisplit systems.

Model	Component	Supply scope
MSZ-HR42VFK	Indoor unit White wall-mounted · Integrated Wi-Fi · 838 mm wide	Included
MUZ-HR42VF	Outdoor unit Heat pump · refrigerant R32 · 34 kg	Included
RH18A	Remote control included An infrared remote control for the set	Included

Installation, pipes, supports, and construction materials not included. The overall image is illustrative, not a scale photograph. What to check before installation.

Guide

What to check before installing the HR42VFK

The choice of equipment does not replace the inspection of the installation by a qualified professional.

Identify the complete pair: MSZ-HR42VFK and MUZ-HR42VF. Also, compare the label review with the documentation; the name HR42 alone does not describe all versions.
Dimension the room with a professional: surface area and height, orientation, insulation, glazing, occupancy, and use. Do not choose solely based on cooling capacity or square meters.
Check where both units, the drainage and the refrigerant line, will go. The published limit is 20 m of piping and 12 m of elevation; these lengths are not included in the supply.
Confirm power supply, protections, outdoor ventilation, supports, and accessibility. The installation and handling of the refrigeration circuit must be carried out by qualified personnel.
Request a quote that separates equipment, materials, installation, and commissioning. The supply includes mainland shipping within 24–48 hours; confirm with the installer the necessary accessories for your home.

Diagnosis and fault codes

Operation and alerts of the HR42VFK

What to observe and when to request a review

01
The compressor does not restart immediately.
Por favor, proporciona el texto que deseas traducir. The manual includes a protection period of approximately three minutes after stopping the compressor. A delayed start does not confirm a fault on its own.
Wait for that interval without chaining on and off cycles. If the malfunction persists, note the mode, the setpoint, and the lights on the unit.
02
It does not respond to the infrared remote control.
Por favor, proporciona el texto que deseas traducir. The state of the batteries or the reception of the signal can affect the control. This does not automatically identify a fault in the PCB.
Check the batteries and try with the remote aimed at the receiver, without obstacles. Do not open the electrical components.
03
MELCloud does not connect, but the remote control works.
Por favor, proporciona el texto que deseas traducir. Internet control depends on the network, the interface configuration, and the MELCloud service; it is different from infrared control.
Check the router connection and the configuration indicated in the Wi-Fi manual. Do not replace components based solely on a connection fault.
04
The operation indicator is flashing.
Por favor, proporciona el texto que deseas traducir. The service manual interprets flashing sequences according to the model and revision. A code taken from another family may lead to an incorrect diagnosis.
Record the sequence, behavior, and complete references. Provide this data to the technical service; do not access the refrigeration circuit or the electronics.

A warning does not identify a faulty part by itself. Record the references of both units and the signaling; do not open the electronics or manipulate the refrigeration circuit.

Technical data

Mitsubishi Electric HR42VFK

Brand: Mitsubishi Electric
Set: MSZ-HR42VFK + MUZ-HR42VF
Status: New
Supply scope: Indoor unit, outdoor unit, and RH18A control.
Installation: Not included
Availability and transport: Shipping included to mainland Spain · delivery in 24–48 hours. Not shipped to islands, Ceuta, Melilla, or abroad.

Installation at a glance

Interior: 280 × 838 × 228 mm height × width × depth
Exterior: 550 × 800 × 285 mm height × width × depth
Pipe: 1/4″ · 3/8″ liquid · gas
Maximum range: 20 m
Maximum slope: 12 m
Precharge up to: 7 m
Factory charge · R32: 0.70 kg
Additional load: +20 g/m above 7 m

Load calculation and documentation

Outdoor unit: MUZ-HR42VF. Check PCB and service.

Additional load by length: 20 × (L − 7) g, only if L exceeds 7 m and does not exceed the maximum travel.

L is the actual one-way distance between interior and exterior, not the sum of the liquid and gas pipes. Outer diameters, in liquid / gas order. Refrigerant piping; not cable section or inner diameter.

Data to prepare the installation, not an instruction for recharging due to a fault. The charge must be verified and carried out by a qualified installer according to the PCB, the inspection, and the equipment manual; do not add refrigerant solely due to a lack of cooling.

Mitsubishi Electric · OBH823H · p. 21

Specifications and dimensions of the model

Capabilities, consumption, efficiency, noise, and dimensions of this set. The testing conditions and climate are part of each value.

Brand: Mitsubishi Electric
Identification and supply
Type: 1×1 wall-mounted split with heat pump
Identification and supply
Indoor unit: MSZ-HR42VFK
Identification and supply
Outdoor unit: MUZ-HR42VF
Identification and supply
Equipment condition: New
Identification and supply
Remote control included: RH18A · 1 unit
Identification and supply
Connectivity: Integrated Wi-Fi · MELCloud
Identification and supply
Power supply: 230 V · 50 Hz · single-phase
Identification and supply
Maximum published intensity: 8.5 A
Identification and supply
Nominal cooling (min.–max.): 4.2 kW (1.1–4.5 kW)
Capacity and absorbed power
Equivalent nominal cooling: 3,612 frigories/h
Capacity and absorbed power
Nominal heating (min.–max.): 4.7 kW (0.9–5.4 kW)
Capacity and absorbed power
Equivalent nominal heating: 4,042 kcal/h
Capacity and absorbed power
Nominal electrical power in cold conditions: 1.34 kW
Capacity and absorbed power
Nominal electric power in heat: 1.30 kW
Capacity and absorbed power
nominal EER / COP: 3,13 / 3,62
Capacity and absorbed power
SEER / cooling class: 6.5 / A++
Seasonal efficiency
SCOP / class in heating, medium climate: 4.3 / A+
Seasonal efficiency
SCOP / class in heating, warm climate: 5.2 / A+++
Seasonal efficiency
Normalized annual consumption in cold: 226 kWh/year
Seasonal efficiency
Normalized annual consumption in heat, average climate: 928 kWh/year
Seasonal efficiency
Normalized annual consumption in heat, warm climate: 427 kWh/year
Seasonal efficiency
Dimensions (height × width × depth): 280 × 838 × 228 mm
Indoor unit: size, air, and noise
Net weight: 9 kg
Indoor unit: size, air, and noise
Fan speeds: 4
Indoor unit: size, air, and noise
Cold air flow: 360 / 522 / 648 / 786 m³/h
Indoor unit: size, air, and noise
Airflow in heating: 336 / 474 / 648 / 804 m³/h
Indoor unit: size, air, and noise
Sound pressure in cold: 24 / 34 / 39 / 45 dB(A)
Indoor unit: size, air, and noise
Sound pressure in heating: 24 / 32 / 40 / 46 dB(A)
Indoor unit: size, air, and noise
Declared sound power: 60 dB(A)
Indoor unit: size, air, and noise
Dimensions (height × width × depth): 550 × 800 × 285 mm
Outdoor unit: size, air, and noise
Net weight: 34 kg
Outdoor unit: size, air, and noise
Published air flow: 34.3 m³/min
Outdoor unit: size, air, and noise
Published sound pressure: 50 dB(A)
Outdoor unit: size, air, and noise
Declared sound power: 64 dB(A)
Outdoor unit: size, air, and noise
Refrigerant: R32
Refrigeration circuit and installation limits
Factory load: 0.70 kg
Refrigeration circuit and installation limits
Global warming potential (GWP): 675
Refrigeration circuit and installation limits
Equivalent of CO₂ of the published load: 0.47 tons
Refrigeration circuit and installation limits
Diameter of liquid/gas pipe: 6.35 / 9.52 mm (1/4 / 3/8 inches)
Refrigeration circuit and installation limits
Maximum pipe length: 20 m
Refrigeration circuit and installation limits
Maximum slope: 12 m
Refrigeration circuit and installation limits
Cold operating outdoor temperature: −10 to +46 °C
Refrigeration circuit and installation limits
Operating outdoor temperature in heating mode: −10 to +24 °C
Refrigeration circuit and installation limits

Before purchasing

The values of flow rate and indoor sound pressure follow the order of low, medium, high, and super high. Sound pressure and sound power are distinct magnitudes. Nominal capacities and consumptions correspond to tests; annual consumptions are standardized and are not a forecast of the bill. In the service documentation, the cold test uses 27 °C indoor (dry bulb) and 35 °C outdoor; for heating, 20 °C indoor and 7 °C outdoor. Operating within an outdoor range does not imply maintaining nominal capacity at all its extremes.

Documentation

Frequently asked questions

Questions about the Mitsubishi Electric HR42VFK

How many frigories does it have and how many rooms is it suitable for?

This unit has a nominal cooling capacity of 3,612 frigories/h (4.2 kW) and a single indoor unit (MSZ-HR42VFK). It is designed for a room or an open space that has been sized as such. It is not equivalent to a 2x1 for two closed rooms.

Is it an option if I am looking for an air conditioning unit with 3,500 frigories?

The exact figure for this combination is approximately 3,612 frigories/h nominal (4.2 kW), above 3,500. If the calculation for your room requires at least 3,500 frigories/h, also compare the capacity at the expected outdoor temperature and the margin indicated by the installer.

Is it suitable for a bedroom with a lot of sunlight?

It can be useful, but it's important to know how much your bedroom heats up, especially if it gets afternoon sun or is under the roof. If you need a bit more power, compare the Mitsubishi Electric MSZ-HR50VFK + MUZ-HR50VFIt goes from about 3,612 to 4,300 frigories/h. Tell us the square meters and if the ceiling is insulated: we help you choose the power and check the noise of the split for sleeping.

How do I know if it has enough power for my living room?

To choose the power, you need to consider the size of the living room, how much sunlight it receives, and the insulation. If the living room is spacious or continues to retain a lot of heat, compare the Mitsubishi Electric MSZ-HR50VFK + MUZ-HR50VFIt goes from about 3,612 to 4,300 frigories/h. Tell us the square meters and how much sun it receives, and we will help you choose.

Are those frigories what it consumes in electricity?

No. 3,612 frigories/h (4.2 kW) describe cooling capacity, while the technical sheet states 1.34 kW of nominal electric power in cooling for this combination. Actual consumption varies with load, temperature, settings, and operating hours; that figure is not a fixed monthly bill.

What does the Mitsubishi Electric HR42VFK set include?

It includes an indoor unit MSZ-HR42VFK, an outdoor unit MUZ-HR42VF, and an infrared remote control RH18A. It is a 1×1 split set. The set image is illustrative: it does not represent included installation materials or an exact scale.

Does the HR42VFK have Wi-Fi or do you need to buy an adapter?

The MSZ-HR42VFK version includes Wi-Fi for control via MELCloud; it does not require an additional external adapter. You must connect the interface to a compatible network and configure the service. The RH18A remote control allows local control without relying on the Internet.

What is the difference between HR35, HR42, and HR50?

The technical sheet of the HR VFK series states 3.4 kW nominal in cold for HR35, 4.2 kW for HR42, and 5.0 kW for HR50. In heat, they are 3.6, 4.7, and 5.4 kW respectively. A higher capacity does not necessarily make the equipment more suitable in all cases: it must be adjusted to the actual demand.

Can it air condition two rooms independently?

No. This system has only one indoor unit and one outdoor unit. The air can be moved to a connected space, but that does not mean it can regulate two rooms separately. For independent control, two units or a compatible multisplit combination need to be considered.

Can I buy just the split and connect it to another outdoor unit?

This sheet corresponds to the pair MSZ-HR42VFK + MUZ-HR42VF. It does not confirm combinations with other outdoor units or multisplit compatibility. If you want to keep an existing unit, provide its full reference and check the official combination matrix before purchasing.

How much does the HR42VFK consume and how much will it cost to use it?

The nominal electrical power is 1.34 kW in cooling and 1.30 kW in heating, under testing conditions. It does not necessarily remain at those values during use. The cost depends on the time, load, setpoint, and your rate; the 226 kWh/year in cooling is a standardized value for comparison, not a projected bill.

Why do A++, A+, and A+++ appear on the same sheet?

They refer to different conditions. In cooling, it has a SEER of 6.5 and A++. In heating, SCOP is 4.3 and A+ for moderate climate; for warm climate, SCOP is 5.2 and A+++. A+++ should not be presented as the universal classification for this equipment.

Can it be used for heating during the winter?

Yes, it works as a heat pump and has a nominal heating capacity of 4.7 kW. The published outdoor range in heating is from −10 to +24 °C. The available capacity and consumption vary with the conditions: the limit of −10 °C does not guarantee a constant 4.7 kW nor does it replace the calculation of the heating needs of the home.

What noise does the indoor unit of the HR42 make?

In cold mode, it declares a sound pressure level of 24, 34, 39, and 45 dB(A), according to its four speeds; in heat mode, 24, 32, 40, and 46 dB(A). The sound power level of 60 dB(A) is a different magnitude and should not be directly compared with those pressure levels.

How much space do I need to install the units?

The indoor unit measures 280 × 838 × 228 mm and weighs 9 kg; the outdoor unit measures 550 × 800 × 285 mm and weighs 34 kg. The dimensions follow the order of height × width × depth. The ventilation, installation, and maintenance clearances indicated in the manual must be added: it is not enough for the casing to fit.

Does it include installation, pipes, or supports?

No. The price includes the set, VAT, and shipping to mainland Spain within 24–48 hours, but does not include installation, pipes, supports, or construction materials. We do not ship this equipment to the Balearic Islands, Canary Islands, Ceuta, Melilla, or abroad. The installation budget must identify the route, drainage, supply, access, materials, and commissioning.

What length of pipe does it accommodate and what diameters does it use?

The technical sheet specifies up to 20 m of piping and 12 m of elevation, with liquid and gas connections of 6.35 and 9.52 mm. These are technical limits, not an amount of piping included. The installer must check refrigerant charge, run length, and conditions in the manual for the specific installation.

What refrigerant does it use and what is the factory charge?

Use R32 and declare a factory charge of 0.70 kg. This amount does not allow for the final charge of any installation to be deduced without further consideration: the manufacturer's conditions must be followed. Handling the refrigeration circuit is not a user operation.

Is it normal for it to take time to start after turning it off?

The service manual includes a protection period of approximately three minutes for the compressor. Avoid restarting it repeatedly during that interval. If it still does not work afterwards, record the mode, setpoint, and signaling for technical review; the delay alone does not identify a faulty part.

What information should I provide if the light is flashing or stops working?

Note the complete reference of both units, their revision, the operating mode, and the flashing sequence; a photo or video of the signaling may help. Use the documentation corresponding to that version. Do not extrapolate codes from other series or open the electronics to try to identify a spare part.

Where can I check the data and instructions for the equipment?

In the Documentation section, you have the official Spanish technical sheet for the MSZ-HR VFK series and the service manual OBH822H, which includes versions of the MSZ-HR42VFK. Always verify the references and revisions on the labels. The technical manual does not replace the work of a qualified installer.

Services for your air conditioning

Mitsubishi Electric MSZ-HR42VFK + MUZ-HR42VF split air conditioning