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38 Maintenance / cleaning
Although heat pumps are considered low-maintenance heating systems, regular periodic maintenance work offers
advantages.
• Operational reliability is maintained.
• A consistently high seasonal performance factor is achieved.
• Low fault rate.
• The service life of system components can be prolonged.
• Possible damage or faults are detected early.
• Heating convenience is assured in the long term.
• Legal requirements are met.
38.1 Overview of maintenance work
Cleaning
Clean the dirt filter in heating circuit
Clean the heat pump casing and interior
Clean fins on evaporator of air heat pump
Clean the condensate pan
Clean the condensate drain
Function and visual checks
Visual check of all refrigerant-carrying components for oil leaks and traces of oil
Visual check for leaks of all water-carrying parts
Check settings for heating control unit and switching times
Check heating circuit pressure and function of heating circuit diaphragm expansion vessel
(pre-charge pressure)
Check of the safety valves
Checks, display values
Visual check of electrical connections / plug-in connections / cables for damage
Check that threaded electrical connections are firmly attached
Temperature sensors (appliance sensors)
Read the fault memory
Refrigerant circuit tightness test if more than 5 t CO2 equiv.
Entry in the system log book
3064298_201805
Maintenance / cleaning
Completed
107
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