20
During this phase the initial pellet dosing starts and the auger supplies the required amount of pellet for ignition.
During this phase the igniter, auger and flue gases motor are active.
Ignition – Fixed Phase
This phase lasts a fixed time period of 180 seconds. In case the ignition was successful before this phase ended
it will continue until the time frame expires and the stove switches to stabilization phase. During this phase the
igniter, auger and flue gases motor are active.
Ignition – Variable Phase
This phase follows a fixed phase. The duration of this phase varies. It starts with fulfillment of the conditions for
ignition until the temperature of flue gases is 45°C. In case the ignition of the boiler is achieved before the phase
time expires the phase is interrupted and Stabilization Phase starts. During this phase the igniter, auger and flue
gases motor are active.
Stabilization Phase
Stabilization Phase is a transitional state between Ignition Phase and Run Mode Phase. This phase starts with
fulfillment of the conditions for ignition or when flue gases reach the temperature of 45°C. It lasts three minutes
and during that time the igniter, auger and flue gases motor are active.
Run Mode Phase
Run Mode Phase starts after Stabilization Phase. There are five levels of power which can be set during this phase
(see 10.3.1.1). During this phase the igniter is inactive while the auger, flue gases motor and pump are active and
operate at different intensity depending on the power level set. The boiler is operating at the set power until
modulation conditions are achieved.
Modulation Phase
The boiler switches to Modulation Phase when one of two conditions is achieved:
1.
When boiler achieves set water temperature
2.
If flue gases temperature reaches the temperature higher than 200°C
During Modulation Phase the boiler is operating with minimum power – power 1 until the temperature decreases
below the set value.
Standby Mode
The boiler switches to Standby Mode when one of two conditions is achieved:
1.
When the boiler reaches the set water temperature it switches to modulation and continues to increase
temperature of water by inertia to the value of 4°C higher than the set water temperature in the boiler.
2.
When exterior (room) thermostat reacts
During Standby Mode pellet dosing stops and the boiler is switching off. The boiler switches on again when the
water temperature is 4°C lower than the set value or when the room thermostat deactivates.
Safety Mode
Safety Mode occurs when the flue gases temperature exceeds 230°C or when water temperature in the boiler
reaches 85°C. During this phase pellet dosing stops until the flue gases temperature is beneath 230°C or the water
temperature in the boiler is beneath 85°C. If there is no temperature reduction in the next 60 seconds the boiler
switches to Alarm Mode and displays a message Er04 or Er05.
Extinguishing Phase
The boiler is switched off by holding P2 key for 3 s and longer. The Extinguishing Phase starts during which pellet
dosing stops while the flue gases motor and pump operate at maximum capacity to cool down the boiler as soon
as possible. The minimum duration of the Extinguishing Phase is 300 seconds and the condition for complete
shutdown of the stove is that the flue gases temperature is below 70°C.
OFF
The boiler is switched off in this mode (the flue gases motor, the pump, the igniter and the auger are not active).
Block Mode
The Block Mode occurs in case of error or alarm. During Block Mode the flue gases fan, auger and igniter are
switched off. To exit press and hold P2 key for 3 seconds: If the blockade is overcome and nothing causes the
alarm, the system will shut down.
Recover Ignition
The boiler switches to this phase in two cases:
1.
If a power failure occurs in the operation mode and the flue gases temperature is higher than 45°C.
2.
Pressing the main power switch while stove is in Extinguishing Phase.
10.5.
Possible problems and solutions
Display
message
Description
Possible causes
Resetting errors
Possible alarm
solutions
Er01
Safety thermostat activation
High water
temperature in the
boiler
Wait until the
boiler is
completely cool
Check the validity
and functionality
of the pump
Содержание GRANDE 37
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