Function
TCG 5xx control box
Operating cycle phases:
1: No voltage
2: Powering up, no heat request
3: Checking the air flap is closed
4: Opening an air flap, arrival in pre-
ventilation position.
5: Checking the rest status of the air
pressure switch.
6: Pre-ventilation: energizing of the
motor, checking the air pressure.
7: End of pre-ventilation.
8: Air flap closes to the ignition position
9: Switching on the igniter, unauthorised
flame monitoring.
10:Starting the burner: Opening of the
420010594100
solenoid valve, flame formation,
safety time: max. 3 s.
11:Awaiting regulator release
12:Opening the air flap, until the
maximum output is reached.
13:Closing of the air flap until the
minimum regulation position is reached.
14:Operation at intermediate regulation
power.
15:Operation at minimum regulation
power.
16:Regulator shutdown, closure of the
air flap to 0°.
17:Awaiting a new heating request
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