9. Maintenance and Trouble Shooting
9.1 Maintenance
The heat pump water heater is an advanced clean and ventilated. Regularly clean the
equipment with high automization. The evaporator to keep high heat exchanging
reliability and operation life of the heat pump can efficiency.
be expectedly gurranteed and even increased by
Check the inside pipe connectors and refrigerant
regular inspection and effective maintenance.
service port is dirty with oil. Make sure there is no
The external water filter should be cleaned refrigerant leakage.
regularly to ensure the cleanness of the water in
Before stopping the heat pump for long time,
the system and avoid damage caused by
drain out all water in the pipes, and shut off the
blockage in the filter.
power supply, and put it into a shield. Full
All protective settings in the unit have been set inspection of the system is required before next
before ex-factory. Users must not adjust it when operation.
the heat pump unit is in use.
Users should call the installer or the seller every
Regular inspection is required for the power time when there is an error on the heat pump
source and the wiring connection of the electric controller.
system. Loose wiring connection and electric
Clean the condenser with phosphoric acid of
components should be repaired in time.
15% consistence under temperature of 50C-60C.
The water supply system, relief valve of the water Run the circulation pump for 3 hours, and then
tank, water level control device and air discharge flush with fresh water for 3 times. When installing
device need to be checked regularly in case of the pipes, add a 3 way valve on the pipes and
low circulation water volume caused by air closed on outlet of it, for cleaning use. Corrosive
entering the system, to ensure enough capacity washing liquid is forbidden to clean the
and reliability of the heat pump. condenser.
Check the water pump and the valves on the Clean the inside of the water tank after being
pipes if they work well, and make sure there is no used for a period(usually two months, and
leakage from connectors. according to local water quality.)
Keep the surrounding of the heat pump dry,
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