When our 16kW Caernarfon heat pump from Global Energy Systems started throwing “major defrost errors” at 6°C ambient temperature, we were baffled. Defrost issues are common in cold and humid conditions, but this wasn’t the case. After several shutdowns and error codes, we contacted Global Energy Systems for support.
What followed was a frustrating journey filled with unexpected challenges, surprising discoveries and a little help from a heat pump expert who quickly ruled out what we thought was the most likely culprit. It turns out, defrost errors aren’t always caused by what you’d expect.
Want to know how we got to the bottom of the issue and what we uncovered along the way? Watch the video below for the full story, troubleshooting tips, and a surprising twist that might just change how you view customer support in the heat pump industry.
We also share some simple calculations on how to ascertain whether your refrigerant levels are OK without having to get an engineer out.
Oh Mars! You have been through the mangle with your ASHP experiences haven’t you? Though you have been very unfortunate, (and I’m glad it happened to you and not me!!!) I think we have your very bad luck and fortune to thank for the whole existence of RHH!😉 I look forward to 2025 and all matters renewable (both heating and energy in general) I also hope that you will be able to resolve your awful experience with contractors and say Bye-Bye to Global Energy Systems altogether – such service (or lack of) and such immature attitude towards customer service and relations is to be deplored! Regards and Good Fortune for 2025, Toodles.
I know your pain. I have a Heat Pump installed 11y ago and it has a fault with the control board. It has been serviced and maintained by a local company as the original installer decided to stop supporting this manufacturer but they don’t have the knowledge or manuals for my machine. The manufacturer no longer supports domestic customers.
I had to research the fault code as it was not in the manual – it was the death code – board failure.
With no-one to support the unit I will have to replace it, in a rush, in winter.
This sort of attitude from major manufacturers is not helpful in giving confidence to the general public who are supposed to be adopting heat pumps.