hajdu Z30 SMART Manual page 30

Z30 SMART • Z50 SMART • Z80 SMART • Z120 SMART • Z150 SMART • Z200 SMART
9.6. Active anode
The hot water storage tank is additionally protected against corrosion by active
anodes. The service life of the active anodes is subject to the water quality and
the operating conditions. The condition of the anodes must be checked upon
each descaling operation, but at least once every two years.Its replacement re-
quires the disconnection of the power supply; such replacement requires the dis-
connection of the electrical circuit and the removalof the service cover. After re-
moving the service cover, it is recommended to perform reassembling using a
new sealing. The technician determines the time of the next inspection. If the di-
ameter of the anode decreases by 10 mm anywhere, it must be replaced. After
replacement of the anode, its earthing must be implemented according to the
original state. Adequate metal­through connection between the active anode and
the earthing bolt is essential .
9.7.
Defrosting
Taking the appliance out of service requires the removal of power, and the total
emptying of the container.When putting back into operation, refill the appliance
with water, before connecting to the electrical network.
9.8.
Summary of periodical inspections
Bimonthly
Check of safety valve (9.1).
9.9. Operation indicator LED
The operation LED shows the operating status of the device according to the ta-
ble below .
LED status
Flashes every 10 seconds
It is constantly lit
Flashes quickly
Fast double flash on power up
Possible causes of the error message:
- Dry heating – the tank of the appliance is empty while the power supply is
switched on
- Defective radiator, relay or other safety problem
- Electronics failure
30 2
It is not lit
Biyearly
Descaling (9.3),
Anode inspection (9.6),
Radiator inspection (9.3; 9.5),
Check of hydraulic connections,
Check of the condition of electrical assemblies.
Operating status
Off state
Normal operation
Heating in progress
Error (see below)
Indicates that the rotary selector is in the
position corresponding to the factory set
temperature.