Make, model and code
Note the label details and any code or flashing pattern. It often narrows things down.
Repair
HC Air Conditioning repairs air conditioning across Sussex: not cooling, leaking, noisy or showing an error.

The service
Most faults show up in the same few ways: the room won't cool, water drips from the indoor unit, ice forms on the pipes, a light flashes, or there's a new noise or smell.
Each has a short list of likely causes, from a blocked drain or a failed fan to a refrigerant leak or a faulty sensor. We find the actual cause, explain it, and agree the fix with you before we start.
We repair split and multi-split systems, whoever fitted them. And if a repair isn't worth it on an older system, we'll tell you straight.
Fault finder
The usual causes, and what to tell us.
Usual causes: Clogged filters, the wrong mode, a dirty outdoor unit, a failed fan or low refrigerant from a leak.
What to do: Clean the filters and check the remote is on cool. If it still will not cool, send an enquiry.
Usual causes: A blocked or kinked condensate drain, or a failed condensate pump.
What to do: Switch it off, catch the water and get the drain checked.
Usual causes: Poor airflow over the indoor coil, often from dirty filters, or low refrigerant.
What to do: Switch it off and let it thaw. Do not keep running it until it has been checked.
Usual causes: The system has detected a fault in one area, such as a sensor, the fan or the refrigerant.
What to do: Note the code with the make and model and include them in your enquiry.
Usual causes: Loose panels or fixings, a worn fan, debris in the outdoor unit or an electrical fault.
What to do: Note when it happens and which unit it comes from.
Usual causes: A tripped breaker, flat remote batteries, a failed control board or a power fault.
What to do: Check the breaker and the remote batteries first.
What's included
What it's doing and when it started.
Codes read and the system tested running.
Blocked drains, dirty filters and failing fans, checked first.
Pressures checked, and any leak traced.
Connections, sensors, remote and control board.
What's wrong, the fix, and anything else we noticed.
Before you book
Note the label details and any code or flashing pattern. It often narrows things down.
Constant or on and off? Anything happen around the same time, like a power cut?
Power, breaker, remote batteries, mode and filters. It might save a visit.
Turn it off and catch the water to protect the wall and floor.
Good to know
Topping it up without fixing the leak only delays the problem.
Only an F-Gas certificate holder can open the circuit or regas a system.
A blocked drain or failed pump, often a quick fix.
Clean filters and coils stop many faults before they start.
Step by step
What it's doing, the make and model, any error code.
We'll talk it through and agree a time.
We test it, find the cause and explain the fix.
With your go-ahead, repaired and tested before we leave.
Questions
Common causes are clogged filters, a dirty outdoor unit, the wrong mode on the remote, a failed fan or low refrigerant from a leak. Check the filters and the mode first, then send us an enquiry with the make and model.
It is usually a blocked or kinked condensate drain or a failed condensate pump. Switch the system off and catch the water, then get the drain checked.
Codes differ between makes and models, and they point to an area of the system rather than the exact fault. Send us the code with the make and model, and we can tell you what it usually means.
Ice usually means air is not flowing across the indoor coil properly, often because of dirty filters, or that the system is low on refrigerant. Switch the system off to let it thaw, and get it checked before running it again.
Repair does not depend on who fitted the system. Tell us the make and model when you enquire so we can prepare.
It depends on the fault and the age of the system. A blocked drain or a failed fan is usually worth fixing; a failed compressor on an old system may not be. We explain the options so you can decide.
New system, service or repair: send an enquiry and we'll get back to you.