In order to ensure optimal availability of the unit, a number of checks and inspections on the unit and the field wiring have to be carried out at regular intervals, preferably yearly. This maintenance should be carried out by your local agreed technician.
Always check for gas (refrigerant) leakage before starting work of unit by using the gas sniffer (Gas sniffer must be suitable for R290).
If a leak occurs, close all covers of the product, notify the end user and customer service.
Be sure to check there are no continuously operating open flames (for example an operating gas appliance) and ignition sources (for example an operating electric heater) near the product.
Be sure to check the product shall be stored in a well-ventilated area.
Use restrictions unauthorized people entering safety zone.
Make sure the water pressure is not too high or too low.
Check if water is leaking from the water pipe.
Check whether the outdoor unit heat exchanger is blocked by dust or snow.
Check if snow is blocking the front or bottom of the product.
Check if the condensate is properly discharged from the outdoor unit.
Check if the outdoor unit defrost is working properly.