Инструкция для DE DIETRICH ZENA PLUS MSL 31 FF

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71.03982.03 - EN

OPERATING INSTRUCTIONS

10. TROUBLESHOOTING

Do not drain the whole system as illing up with water again causes unnecessary and harmful scale to build up inside the

boiler and the heating elements. If the boiler is not used during winter and is therefore exposed to the danger of frost, add

some speciic anti-freeze to the water in the system (e.g.: propylene glycol coupled with corrosion and scale inhibitors).

The electronic boiler management system includes a “frost protection” function for the heating system which, when delivery

temperature falls below 5°C, operates the burner until a delivery temperature of 30°C is reached.

The frost protection function is enabled if:

* the boiler is electrically powered;

* the gas tap is open;

* the system is at the correct pressure;

* the boiler is not blocked.

9. PROLONGED SHUTDOWN. FROST PROTECTION

N.B.:

in case of a fault, the display backlighting lashes together with the error code.

To keep the boiler eficient and safe, have it checked by the authorised Service Centre at the end of every operating period.
Careful servicing ensures economical operation of the system.
Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily lammable cleaners (e.g.: petrol,
alcohol, and so on). Always switch off the appliance before cleaning it (see section 7 Switching off the boiler).

11. ROUTINE MAINTENANCE INSTRUCTIONS

Faults are shown on the display with an error code (e.g.: E 01):

CODE

DISPLAYED

FAULT

CORRECTIVE ACTION

E01

Failed ignition shutdown

Press and hold down “

” for at least 2 seconds. If this fault persists, call the

Authorised Service Centre.

E02