Why won’t my heat pump turn back on after a power cut?

If your heat pump isn’t coming back on after a power outage, it may need a manual restart. Some models also require the time and settings to be reconfigured. Give us a call and we’ll talk you through what to check and how to safely restart the system.

What causes low pressure on a heat pump?

Low pressure is often linked to the central heating side of the system. It could mean there’s a small leak, or that the system needs to be topped up. Our team can help you check the pressure and advise on what to do next.

Why is my heat pump showing a high pressure alarm?

A high pressure fault could be caused by a blocked filter, closed valves, or an issue with system flow. It's important not to ignore it, so get in touch and we’ll help you find the cause and the right fix.

What should I do if my heat pump is leaking water?

If you spot water around your heat pump, it could be condensation or it might be something more serious like a system leak. We can help you figure out the source and advise whether it needs a callout or a quick adjustment.

Expert technical support for heat pumps

If your heat pump isn’t working as it should, our Tech Support team is here to help. Whether it’s not heating properly, showing an error code, or has high running costs, we can help.

At Alto Energy, we provide free over-the-phone technical support for Samsung, Mitsubishi, Worcester Bosch, Viessmann and IVT heat pumps. Many common problems can be solved during the call, helping you avoid unnecessary callouts.

No matter the issue, you’ll be speaking to someone who understands heat pumps and can guide you through the next steps with confidence.

Free Over-The-Phone Support

If you’re having trouble with your heat pump, please get in contact. Our Technical Support team will talk through the issue with you, help identify the cause, and guide you through a fix if it’s something straightforward. In many cases, we can get things sorted there and then over the phone.

There’s no charge for this service, and no need to book ahead.

If the problem needs more than a quick fix, we’ve got you covered:

We can recommend a trusted local plumber or heating engineer
We can send one of our own engineers to visit and resolve the issue on site
We can supply spare parts if something needs replacing

Whatever the issue, we’re here to get your system back up and running with minimal fuss.

Contact Support

Heat pump issues we can help with

If your heat pump isn’t coming back on after a power outage, it may need a manual restart. Some models also require the time and settings to be reconfigured. Give us a call and we’ll talk you through what to check and how to safely restart the system.
Low pressure is often linked to the central heating side of the system. It could mean there’s a small leak, or that the system needs to be topped up. Our team can help you check the pressure and advise on what to do next.
A high pressure fault could be caused by a blocked filter, closed valves, or an issue with system flow. It's important not to ignore it, so get in touch and we’ll help you find the cause and the right fix.
If you spot water around your heat pump, it could be condensation or it might be something more serious like a system leak. We can help you figure out the source and advise whether it needs a callout or a quick adjustment.

What Heat Pumps Do we Support?

mitsubishi ecodan Tech Support

Alto Energy is a Mitsubishi Business Solutions Partner, meaning we're recognised as having the capability not just to install Ecodan air source heat pumps, but to provide design and technical support for them too. All our engineers are fully Mitsubishi service trained, and we hold spare parts in stock so most issues can be resolved quickly.

Worcester Bosch Air Source Heat Pumps

We provide technical support and servicing for Worcester Bosch air source heat pumps, including the popular Compress 2000. Our in-house technical support team has extensive product knowledge and can help with troubleshooting, fault diagnosis and performance issues over the phone.

samsung air source heat pump Technical Support

Alto Energy is an approved Value Added Reseller for Samsung EHS air source heat pumps. We offer service and support on all Samsung EHS heat pumps from Gen5 onwards, with all of our field engineers fully trained for servicing these heat pumps.

Viessmann Ground Source Heat Pump tech support

Alto Energy offers full technical support and servicing for Viessmann ground source heat pumps, including the highly efficient Vitocal range. Our technical team has in-depth experience with Viessmann heat pump systems and can provide over-the-phone support to help with fault finding, error codes, and system performance issues. For more complex cases, our engineers are fully trained to carry out on-site diagnostics, maintenance, and repairs.

ivt ground source heat pumps

IVT has stopped supplying heat pumps to the UK market, but if you already have an IVT ground source heat pump, we can still service your system and supply spare parts. Our engineers and technical support team have extensive knowledge of IVT ground source heat pumps and can help keep your system running reliably.

Step-by-step heat pump support videos

In this video, one of our Alto Energy engineers shows you how to clean the filter on your Samsung air source heat pump.

Watch our Engineering Manager walk you through cleaning the filter on an IVT Greenline E Series or Worcester Bosch Greenstore E Series ground source heat pump.

Our Engineer demonstrates how to turn on the immersion heater using the Samsung Gen6 control panel. He also runs through how to restart your heat pump after a power cut or if there's a fault.