30
Boiler overheating alarm or screw feeder temperature:
this alarm activates when the boiler temperature or
screw feeder temperature is too high, and then message
"SAFETY THERMAL"
appears. This is additional
safety device. To return to normal working mode, you should wait for furnace to shuts down (smoke fan
works). Cooling lasts for twenty minutes. After that, renew safety thermostat function that blocked the
furnace (take plastic cap off and press thermostat button until silent metal noise sounds). It is located on the
rear side of the furnace (Figure 69) and then press push-button P4, hold for 3 seconds until furnace
changes back to ON mode. Upper thermostat blocks the furnace operation when the water in the boiler
reaches100°C, and bottom thermostat when screw feeder reaches temperature of 80°C.
NOTE: If any of two previously mentioned alarms activates, check if the chamber is not clogged with ashes or
that chimney is not partially clogged.
Main switch with power cable is shown in figure 70.
Figure 69 Figure 70
15.5.7. Alarm for blower motor (fan) malfunction
If the blower motor (fan) breaks, furnace shuts down and message ALARM
FAN FAILURE
appears, as in following
figure
.
Shutdown procedure immediately starts.
15.5.8. Power outage occurs (block-out)
After AC power fails and depending on status the furnace was in, following can occur:
Previous status
Duration of power outage status
New status
Off
any
Off
On
< 30 sec
On
Pellet filling
< 30 sec
Pellet filling
Waiting for flames
< 30 sec
Waiting for flames
Work
< 30 sec
Work
Boiler cleaning
< 30 sec
Boiler cleaning
Off
< 30 sec
Off
Table 7
In all cases when duration of power outage was longer than 30 seconds, furnace shuts down. When AC power is on
again (the power outage was longer than 30 seconds) then the following is shown in the display (figure 69):
Figure 65
12:42 22ºC
ALARM
FAN
Figure 71
Figure 68
12:42 22ºC
SAFETY
THERMAL
