Job Summary
We are seeking an experienced HVAC / VRF Technician to be responsible for the operation, maintenance, troubleshooting and repair of the hotel’s complete air-conditioning systems.
The ideal candidate must have strong hands-on experience with VRF/VRV systems and should be capable of independently diagnosing electrical, electronic, refrigerant and mechanical faults.
This is not only a preventive-maintenance position. The technician must be able to identify the actual cause of HVAC failures, repair equipment where practical, replace defective components and return systems to normal operation with minimum downtime.
Main Responsibilities
VRF / VRV Systems
Operate, inspect, service and maintain hotel VRF/VRV systems.
Troubleshoot VRF outdoor units, indoor units and complete refrigerant networks.
Diagnose system error codes using manufacturer service manuals and diagnostic tools.
Diagnose and repair:
PCB/control-board faults
Inverter-board faults
Compressor faults
Fan motors
Outdoor fan motors
Electronic Expansion Valves (EEVs)
Solenoid valves
Pressure sensors
Temperature sensors / thermistors
Communication faults between indoor and outdoor units
Power-supply and control-wiring faults
Refrigerant-related faults
Determine whether a component should be repaired or replaced.
Replace outdoor-unit and indoor-unit components when required.
Carry out proper VRF commissioning and testing following repairs.
Refrigeration Work
Identify refrigerant leaks accurately.
Perform nitrogen pressure testing.
Perform vacuuming using a proper vacuum pump and micron gauge.
Charge refrigerant according to manufacturer specifications.
Recover refrigerant safely when necessary.
Carry out copper pipe brazing.
Repair or replace damaged refrigerant piping.
Understand refrigerant pipe sizing and VRF branch joints.
Check system operating pressures and temperatures.
Diagnose undercharge, overcharge, restrictions and refrigerant-flow problems.
Electrical & Electronic Troubleshooting
The technician must be comfortable using:
Must be capable of troubleshooting:
Three-phase and single-phase electrical systems
Contactors and relays
Circuit breakers
Control transformers
Sensors
Communication wiring
Motors
Inverter drives
PCB boards
Compressor electrical faults
Earth leakage and insulation faults
The technician should be able to read and understand:
Hotel HVAC Maintenance
Carry out preventive and corrective maintenance for:
VRF indoor units
VRF outdoor units
Ducted split AC units
Split AC units
Cassette units
Fresh Air Units where applicable
Exhaust and ventilation fans
Kitchen ventilation systems
Toilet exhaust systems
AHUs/FAHUs where installed
Responsibilities include:
Cleaning filters
Cleaning evaporator and condenser coils
Cleaning drain trays and drain lines
Checking fan motors and bearings
Checking refrigerant conditions
Checking electrical connections
Measuring operating current
Checking compressors
Checking temperatures and pressures
Preventing condensate leakage
Preventing abnormal noise and vibration
Guest Room HVAC
The technician will be expected to respond quickly to guest-room complaints including:
Room not cooling
Poor airflow
AC water leakage
Excessive noise
AC turning on/off unexpectedly
Temperature-control problems
Thermostat problems
Unusual smells
Communication/error codes
Guest-room faults must be diagnosed and repaired with minimum disturbance to hotel guests.
Preventive Maintenance
Prepare and follow a preventive-maintenance schedule covering all hotel HVAC equipment.
Maintain records for:
Report equipment that is approaching the end of its economical service life and recommend repair or replacement.
Spare Parts & Inventory
Maintain a basic stock of critical HVAC spare parts including, where appropriate:
Sensors
Thermistors
Fan motors
Capacitors
Contactors
Relays
Drain pumps
PCB boards
EEV components
Filters
Refrigerant
Copper fittings
Electrical components
The technician should advise hotel management which critical VRF spare parts should be kept on-site to reduce downtime.
Required Experience
Minimum 5 years of hands-on HVAC experience.
Minimum 3 years of direct VRF/VRV experience.
Strong troubleshooting experience, not only installation or preventive maintenance.
Experience maintaining commercial buildings, hotels, hospitals, malls or similar facilities.
Must have personally diagnosed and repaired VRF outdoor units.
Experience with one or more major VRF brands is required, preferably:
Gree
Daikin
Mitsubishi Electric
LG
Carrier
Toshiba
Samsung
Midea
Essential Technical Skills
Candidate must be able to independently perform:
VRF error-code diagnosis
PCB troubleshooting
Compressor diagnosis
Inverter troubleshooting
EEV troubleshooting
Sensor testing
Electrical troubleshooting
Refrigerant charging
Refrigerant recovery
Leak detection
Nitrogen pressure testing
Vacuuming
Copper brazing
Control-wiring troubleshooting
Indoor/outdoor communication diagnosis
Desired Candidate Profile
- Possess a High School Diploma or equivalent; vocational training or associate's degree in HVAC/R preferred.
- Hold EPA Section 608 Universal Certification, demonstrating proficiency in refrigerant handling.
- Have at least 3-5 years of hands-on experience specifically with VRF system installation, maintenance, and repair.
- Demonstrate advanced technical skills in electrical, mechanical, and control systems specific to VRF technology.