Electric box for Compact Vega MK3 2011 – code: M81301 – Climma

Original Climma/Veco spare part for VEGA MK3 system management

The Electrical box for Compact Vega MK3 2011 (code M81301) is a original Climma (Veco S.p.A.) control electrical panel intended for marine air conditioning systems Climma Compact and Climma Split equipped with control system VEGA MK3. It is the main control unit of the system: it centralizes connections and management logics, integrating inside it the electronic board M80571.

In the field of spare parts and onboard maintenance, the M81301 electrical box is used both as replacement and as a component in interventions of upgrade systems from 2011, when provided by the system configuration.

Product features and details

Identification and components

• Product code: M81301
• Manufacturer: Climma (Veco S.p.A.)
• Type: control electrical panel
• Control system: VEGA MK3
• Installed electronic board: M80571
• Application: Climma Compact and Split air conditioners
• Version: system updates from 2011

Main functions managed by the panel

The electrical box acts as the “control room” of the air conditioning unit, coordinating the main utilities and control signals. In particular, it manages:

• power supply of the air conditioning unit;
• compressor control;
• evaporator fan control;
• sea water pump control;
• management of temperature sensors;
• communication with the panel VEGA MK3;
• compressor protection and timing logics.

The functions are implemented by the M80571 board installed inside the panel.

Applications and compatibility (Climma systems)

The M81301 it is indicated as a spare part or as part of update kits for various Climma systems. Among the reported applications:

Compact Series

• Compact 5
• Compact 9
• Compact 10
• Compact 12
• Compact 16
• Compact 17S
• Compact 24S

Split Series

• Split 4
• Split 8
• Split 10
• Split 12
• Split 16
• Split 17S
• Split 24S

Components normally associated with VEGA MK3 upgrades

For upgrading to the VEGA MK3 system it is usually necessary to also provide:

• VEGA MK3 Display (code MK3B);
• MCAV6 connection cable (or MCAV4 on some configurations).

For some models (for example Compact 9 / Split 8) is also required the M77320 starter booster.

Advantages for onboard maintenance and spare parts

In a marine air conditioning system, the electrical box is a central component: a correct replacement helps restore the management of the unit's controls and connections. The M81301, as a panel dedicated to VEGA MK3, systems, is useful when working on Climma Compact/Split systems that use this control architecture.

• Targeted replacement: clear identification through code M81301 for an orderly management of spare parts.
• Integration of the card: presence of M80571 inside the panel, for a solution consistent with the VEGA MK3 system.
• Centralization of connections: single point for connections to the electrical network, seawater pump, control panel, and sensors (according to manual instructions).
• Suitable for upgrade interventions: recommended for systems from 2011 when provided by the plant configuration.

Usage and installation notes

According to the Climma manual, the electrical box:

• must be installed near the air conditioning unit;
• is connected to the unit via a cable of about 2 m;
• can be wall-mounted in any position;
• must remain accessible for maintenance and service;
• integrates connections to the electrical network, seawater pump, control panel, and sensors.

Practical advice for purchasing the spare part

To reduce the risk of error when ordering, it is good practice to verify:

• the code M81301 reported in the documentation or on the system;
• the presence of the control system VEGA MK3 and the possible need for MK3B display and cable MCAV6/MCAV4 in case of upgrade;
• if, for your model, the booster M77320 (for example on Compact 9 / Split 8).

Note: for interventions on onboard electrical systems, installation by qualified personnel is recommended, in compliance with the manufacturer's instructions and the specific system configuration.

FAQ – Frequently Asked Questions

What is the M81301 Climma electrical box?

It is an original Climma (Veco S.p.A.) control panel for Compact and Split marine air conditioning systems with VEGA MK3 control system. It integrates the electronic board M80571.

With which Climma systems is the M81301 indicated?

It is listed as a spare/upgrade for various models of the Compact and Split series equipped with VEGA MK3 control (for example Compact 5, 9, 10, 12, 16, 17S, 24S and Split 4, 8, 10, 12, 16, 17S, 24S).

What functions does the VEGA MK3 electrical panel manage?

It manages unit power supply, compressor control, evaporator fan control, seawater pump command, temperature probe management, and communication with the VEGA MK3 panel, including compressor protection and timing logics.

Are other components needed for the VEGA MK3 upgrade besides the M81301 box?

Normally yes: the VEGA MK3 display (code MK3B) and a connection cable MCAV6 (or MCAV4 in some configurations) are also required.

Are there cases where a starting booster is also required?

For some models (for example Compact 9 / Split 8), the starting booster M77320 is also indicated.