Ariston G.C.N.:41-116-36 (18 kW) Manual De Usuario

39

Anti-frost Device. 
The anti-frost function acts on the central heating fl ow temperatu-
re probe, independently from other regulations, when the electri-
cal supply is turned on.
If the primary circuit temperature is 
between 3°C and 8°C the pump will 
run (with the diverter valve switching 
between central heating and hot water 
every 1 minute) until the temperature 
reaches > 9°C.
If the fl 

ow temperature remains 

between 3°C and 8°C the pump will 
continue to run for a maximum of 20 
minutes unless a temperature above > 
9°C is detected in the central heating 
fl ow, after this the the burner will fi re 
(heating position) until a temperature 
of > 30°C is detected.
If the central heating fl ow temperature is < 3°C, the burner will fi re 
(heating position) at minimum power until the temperature rea-
ches > 30°C, the burner will go out.
If lockout is caused by overheat the burner will not fi re but the 
pump will continue to run (heating position).
The anti-frost device activates only when (with the boiler opera-
ting correctly):
-  the system pressure is correct;
-  the boiler is electrically powered;
-  there is a supply of gas.

7 01

Zone 2 outgoing sensor defective

7 02

Zone 2 return sensor defective

7 03

Zone 3 outgoing sensor defective

7 04

Zone 3 return sensor defective

7 05

Hydraulic separation sensor defective

7 06

Zone 2 overheating

7 07

Zone 3 overheating