Refrigeration Maintenance Technician

Thermozone Technical Services LLC; Dubai; On-site; AED 95,000 - 156,000; Full time

Job summary

Thermozone Technical Services LLC in Dubai seeks a skilled refrigeration technician to diagnose and repair commercial and industrial systems. You will attend breakdowns, review fault history, and use drawings and measurements to identify root causes.

Responsibilities include troubleshooting compressors, condensers, evaporators, pumps and controls; performing preventive maintenance; locating leaks and managing refrigerants; and preparing detailed service reports for clients and supervisors.

Qualifications

• Hands-on troubleshooting in commercial/industrial refrigeration.
• Experience with ammonia systems preferred.
• ITI or diploma in relevant field.
• Experience with cold stores and freezer rooms.
• Familiar with multiple refrigerants and electronic controls.

Responsibilities

• Attend breakdowns and diagnose root causes using measurements and drawings.
• Troubleshoot compressors, condensers, evaporators, pumps, fans, valves, and oil management.
• Diagnose electrical and control faults in motors, sensors, controllers, and wiring.
• Investigate cooling issues, abnormal pressures, and oil problems.
• Perform preventive maintenance, cleaning, lubrication, and part replacements.
• Locate leaks, perform refrigerant recovery, testing, evacuation, and recharge.
• Verify safe operation after repair with defrost, superheat, and subcooling checks.
• Prepare service reports detailing readings, actions, and follow-ups.
• Coordinate parts and explain faults to supervisor/client; support emergency calls.
• Follow safe isolation and refrigerant handling procedures.

Skills

Troubleshooting

Electrical diagnosis

Control systems

Refrigeration maintenance

Education

ITI or diploma

Tools

VFDs

Electronic controls

Job description

• Attend breakdowns, assess symptoms and identify root causes using measurements, fault history and system drawings.

• Troubleshoot compressors, condensers, evaporators, pumps, fans, valves, refrigerant circuits and oil management issues.

• Diagnose electrical and control faults involving motors, contactors, overloads, sensors, controllers and wiring.

• Investigate poor cooling, icing, abnormal pressures, trips, oil problems and excessive power use.

• Carry out preventive maintenance, cleaning, adjustments, lubrication and component replacement to equipment requirements.

• Locate leaks and carry out authorised repairs; perform refrigerant recovery, testing, evacuation and recharging as required.

• Check controller settings, defrost operation, superheat and subcooling where applicable; verify stable operation after repair.

• Prepare service reports with readings, findings, parts used, corrective actions and follow-up recommendations.

• Coordinate parts requirements, explain faults clearly to the service supervisor or client, and support emergency call-outs as agreed.

• Follow electrical isolation, safe pressure-system practices and refrigerant handling procedures.

Desired Candidate Profile

Strong hands‑on troubleshooting experience on commercial or industrial refrigeration, including mechanical and electrical diagnosis and repair.Preferred qualifications and experienceITI or diploma; experience with cold stores, freezer rooms, multiple refrigerants and VFDs and electronic controls. Ammonia experience …