Mitsubishi heat pump servicing
Our Mitsubishi heat pump servicing ensures your system runs efficiently, reduces the risk of unexpected breakdowns, and keeps your manufacturer warranty valid.
At Alto Energy, we provide professional servicing across the UK, with every visit including a thorough system check and a detailed service report.
Whether you have an air source heat pump in a new build or a retrofit installation in an older property, our experienced engineers offer expert support tailored to your specific heat pump setup.
By keeping your heat pump in top condition, you can enjoy peace of mind knowing your home will stay warm throughout the year without the need for early replacement.
Mitsubishi Ecodan Service
We offer comprehensive Mitsubishi Ecodan service plans to ensure your system runs efficiently and reliably all year. On top of that, we offer Mitsubishi heat pump tech support to quickly resolve any questions or issues you may have.
Mitsubishi Zubadan Service
We also offer service plans for homeowners with a Mitsubishi Zubadan heat pump. Just like with our Ecodan service, we provide free tech support to help quickly resolve any issues you may encounter.
What's Included in a Mitsubishi Heat Pump Service?
A heat pump service involves more than just a quick clean. It’s a full inspection of the system, carried out to keep everything running as it should. During a service, our engineer will carry out a series of checks to maintain performance and efficiency. This includes:
- Cleaning the outdoor coil and fan
- Applying a corrosion inhibitor coating to the outdoor unit
- Checking refrigerant pressures and circuit performance
- A full visual inspection of the system
- Electrical checks including voltages and current draw
- Checking and monitoring flow rates, kWh usage and heat output (COP)
- Ensuring the defrost cycle is operating correctly (in winter)
- Checking expansion vessels and inhibitor/glycol levels
- Testing thermostat functions and control settings
- Backflushing the outdoor unit if needed
- Bleeding radiators and checking for airlocks
- Recording efficiency data and checking consumption levels
Mitsubishi heat pump repairs and support
Even with regular servicing, problems can sometimes arise. Our technical support team is available free of charge to help identify and resolve issues over the phone, often providing a solution immediately and saving you time and expense.
If the issue requires an engineer visit, we can schedule one anywhere in the UK. Our engineers carry a wide range of Mitsubishi replacement parts, so most repairs are completed without delay. If a repair isn’t the most cost-effective option, we can advise on when a full heat pump replacement is the right choice.
Frequently Asked Questions About Heat Pump Servicing
How often should a Mitsubishi Ecodan heat pump be serviced?
We recommend an annual service to keep your system working efficiently and to stay within Mitsubishi’s warranty terms.
What’s included in a Mitsubishi heat pump service?
We check the heat pump’s operation, inspect all key components, assess system pressures, and carry out any cleaning or adjustments required. You’ll receive a full report after the service.
Do I need a certified Mitsubishi service engineer?
It’s best to use qualified engineers with Mitsubishi Ecodan experience. Our team are heat pump specialists and service systems in line with the manufacturer's guidance.
Can I get a Mitsubishi heat pump serviced near me?
Yes, our engineers provide Mitsubishi heat pump servicing across the UK. Just let us know your postcode and we’ll confirm availability in your area.
Mitsubishi heat pump fault codes
If your Mitsubishi Ecodan heat pump has stopped working and a fault code has appeared on the screen, you’re not alone. These systems are very reliable, but like any piece of technology, they can flag up issues now and again.
Here’s a breakdown of some of the most common Mitsubishi fault codes and what you can do about them.
Mitsubishi Ecodan L9 fault code
This is one of the more common alerts and usually points to a problem with water flow around the heating circuit. In most cases, the system isn’t getting enough flow, which could be caused by:
- A blocked filter
- Low water pressure
- A circulation pump not running
If you’re comfortable checking your system pressure, it’s worth a look. Otherwise, or if you’re unsure what to do, contact our technical support team for expert guidance.
Mitsubishi Ecodan E6 fault code
This code appears when there's a communication issue between the outdoor and indoor units. It can happen after a power cut or when one unit has been switched off independently of the other.
Most of the time, it can be resolved with a simple reset. Try turning both units off completely, wait a couple of minutes, then switch them both back on at the same time.
If that doesn’t work, it’s best to get in touch with our technical support team.
Mitsubishi Ecodan P1 fault code
This error usually means the controller is expecting a temperature reading (called a thermistor signal) but can’t detect one. This might be due to:
- An incorrect setup or sensor setting
- A recent change to the system that needs further configuration
This type of issue needs to be looked at by someone with a good understanding of your system setup. If you’re not sure where to start, our technical support team is here to help.
