Maintenance Checklist R-290 AC
Assembly group
Repaired Replaced Cleaned Value / Remark
Indoor unit
Surface heat exchanger
Evaporator fins
Condensate pan and drain hose
Air filter
Fan, motor and smooth operation
Indoor air temperature °C
Intake
Outlet
Outdoor unit
Surface of heat exchanger
Condenser fins heat exchanger
Fan, motor and smooth operation
Housing
Outdoor air temperature °C
Intake
Outlet
Compressor
Compressor fixing and dampers
Operational noise
Drawn current
Refrigerant discharge temperature °C
Ref. suction gas temperature °C
Suction pressure (bar)
Refrigerant circuit
Leak tightness
Vibrations of pipes
Friction of pipes
Control system and electrics
Remote control
Cables and wiring / fixing, friction
Wiring – screws tightness
Temperature sensors
Relays or other electr. components
Miscellaneous
Labelling oft he system
Availability of documentation
Any clients complain
Signature of technician Date:
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