VRF INSTALLER AND CHİLLER TECHNİCİAN

Overview

Key Responsibilities

Vrf Systems

• Complete installation, testing, commissioning, and startup of VRF systems.
• Copper piping installation, brazing, pressure testing with nitrogen, vacuuming, refrigerant charging, and leak detection.
• Installation of indoor and outdoor units, branch selector boxes, controllers, and communication wiring.
• Testing and commissioning according to manufacturer standards.
• Troubleshooting communication faults, refrigerant circuit faults, PCB failures, inverter faults, sensor faults, compressor faults, and electrical issues.
• Reading and interpreting HVAC drawings, refrigerant piping layouts, and control diagrams.
• Diagnosing and resolving system performance issues.
• Performing preventive and corrective maintenance.

Chiller Systems

• Installation, testing, commissioning, startup, servicing, troubleshooting, repair, and overhaul of Air-Cooled and Water-Cooled Chillers.
• Strong knowledge of screw, scroll, centrifugal, and reciprocating chiller systems.
• Complete understanding of chilled water systems, condenser water systems, pumps, expansion tanks, AHUs, FCUs, cooling towers, valves, strainers, and related equipment.
• Operation and programming of chiller control panels, HMI interfaces, PLC-based control systems, and BMS integration.
• Reading and interpreting controller alarms, fault histories, operating parameters, trend logs, and diagnostic information.
• Troubleshooting electrical, mechanical, refrigeration, and control-related faults.
• Compressor replacement, compressor alignment, oil charging, and commissioning after replacement.
• Compressor oil replacement and oil analysis.
• Replacement of condenser fans, evaporator fans, EC fans, motors, bearings, pulleys, belts, and vibration isolators.
• Replacement of expansion valves, solenoid valves, pressure switches, sensors, transducers, contactors, relays, VFDs, and electrical components.
• Heat exchanger inspection and cleaning (evaporator and condenser).
• Tube cleaning and condenser coil cleaning.
• Refrigerant recovery, leak detection, evacuation, charging, and refrigerant replacement.
• Water flushing, chemical cleaning, and chilled water balancing.
• Pump troubleshooting and replacement.
• Cooling tower inspection and maintenance (where applicable).
• Calibration of pressure sensors, temperature sensors, flow switches, and safety devices.
• Functional testing of all protection and safety controls.
• Performance testing and optimization to achieve design efficiency.
• Complete preventive maintenance (PM), corrective maintenance (CM), and emergency breakdown repairs.
• Root cause analysis and permanent fault rectification.
• Preparation of service reports and technical documentation.

Required Experience

• Minimum 5–10 years of proven experience in VRF and Chiller systems.
• Extensive experience with the following HVAC brands:
• Mitsubishi Electric
• Daikin
• Carrier
• Midea
• O General
• York
• Trane
• Strong experience in commissioning, troubleshooting, maintenance, and repair of both VRF and Chiller systems.
• Ability to independently diagnose and repair electrical, mechanical, refrigeration, and control system failures.
• Strong understanding of HVAC electrical wiring, control circuits, refrigerant cycles, chilled water systems, and BMS interfaces.
• Ability to read mechanical drawings, wiring diagrams, P&IDs, and manufacturer manuals.
• Experience with commercial buildings, hospitals, hotels, factories, malls, data centers, and industrial facilities.
• UAE/GCC experience is highly preferred.
• Valid UAE Driving License is an advantage.

Preferred Skills

• Expert fault-finding and diagnostic skills.
• Strong knowledge of HVAC safety procedures and commissioning standards.
• Excellent communication and teamwork abilities.
• Ability to work independently under pressure and manage multiple service calls.
• Commitment to delivering high-quality workmanship and customer satisfaction.
• Experience with emergency breakdown response and 24/7 critical HVAC systems.
• * Knowledge of energy optimization, system performance tuning, and preventive maintenance planning.