A retail unit in Warrington
The shopfloor cooling system stops working during a busy trading period, causing indoor temperatures to rise quickly and threatening customer comfort and staff productivity.
- 1Rapid On-Site DiagnosticAn engineer arrives quickly to trace the electrical fault and restore air circulation.
- 2F-Gas Leak CheckThe technician tests the system for refrigerant leaks using electronic detection tools.
- 3Coil Clean and ServiceRemoving built-up grime from the external condenser restores optimal heat transfer.
- 4System Performance LoggedThe engineer records operating pressures and temperatures to ensure efficient running.
Resolving a High-Pressure System Lockout
The engineer diagnoses a high-pressure lockout caused by a heavily blocked outdoor condenser coil. After recovering the remaining refrigerant and repairing a minor joint leak, the technician thoroughly cleans the external heat exchanger. The system is then pressure tested with nitrogen, evacuated, recharged with fresh R32, and commissioned back to full cooling capacity.
- Condenser coil cleared of organic debris
- Refrigerant pipe joint repaired and sealed
- Nitrogen strength test completed successfully
- System evacuated to under two Torr





