CCU repair
CCU repair (compressor–condenser unit) starts with diagnostics: why the unit goes into error, cannot maintain its operating mode, becomes noisy or loses capacity. We do not replace parts by guesswork: first we identify the cause, then repair the unit and verify operation under normal conditions.
Diagnostics
- Electrical: power supply, contactors, boards, protections, connection quality.
- Compressor, fan, sensor and control element operation.
- Mode analysis: behavior under load, responses to setpoints and alarms.
- Heat exchanger condition and the impact of contamination on efficiency.
- Inspection of connections and circuit details (where applicable).
- Prevention and correct operation recommendations.
What typically leads to issues
Power and protections
Voltage drops, incorrect protections, poor contacts and overheating lead to unstable operation.
Mode mistakes
Incorrect settings, sensors and control logic can “break” operation even when hardware is healthy.
Contamination
A dirty heat exchanger reduces efficiency and triggers alarms.
Repair result
- Clarity on the failure cause and what exactly was done.
- Restored normal operation: modes, stability, noise.
- Service recommendations so the issue does not repeat.
- Adjustment of settings and automation for safe operation, when required.
- Advice on operation and seasonal modes.
- Communication is concise and to the point.
How the work goes
InformationModel, installation conditions, symptoms, error codes (if any), service history.
On-site diagnosticsWe check power/protections/control elements and evaluate behavior under load.
RepairWe eliminate the identified cause without touching what isn’t needed. If replacement is required — we agree it in advance.
VerificationWe test normal operation and provide recommendations on operation and preventive maintenance.
What helps speed up diagnostics
- A photo of the nameplate and the unit’s external condition.
- Error codes (if shown) and when they occur.
- A short description: what changed in the system and when the issue started.
- Whether regular service is done and when the heat exchanger was last cleaned.
- Access to the installation location and the ability to safely disconnect power during work.
- If the system is tied to automation — who is responsible for controller settings.