S1 Vivaldi II Owner’s Manual
Page 16
5.3 Steam Boiler Temperature Detection System Failure
(only with the boiler turned on)
This is a blocking alarm and occurs when the temperature probe of the boiler is in short
circuit (temperature >145°C) or it is in open circuit (disconnected) condition
(temperature <60°C). The lights 19-20-21 turn on.
The alarm can be temporarily cleared by turning the boiler off (Press
BOILER
(26)
button.) Eventually you will need to turn off the VII and request service.
5.4 Damaged Group Heating Element Triac
This alarm is a blocking one, and occurs when the group triac always remains in
conduction (temperature >140°C). The lights 20-21 are flashing.
Turn off the VII and request service.
5.5 Damaged Boiler Heating Element Triac
(only with the boiler
turned on)
This alarm is a blocking one, and occurs when the boiler triac always remains in
conduction (temperature >140°C). The lights 19-20-21 are flashing.
Turn off the VII and request service.
5.6 Boiler Automatic Refill System Failure
(only with the boiler
turned on)
This is a blocking alarm which is signaled by blinking of the
Boiler
(13) light. If the pump
runs for more than 1 minute attempted to refill the boiler without the controller circuit
receiving a boiler full signal, this alarm is triggered.
This alarm can be temporarily cancelled by pressing the
BOILER
(26) button to turn off
the boiler. The VII can be operated with the steam boiler off until repairs to the boiler
function occur.
Factoid: A triac is a device to which a small DC control voltage can be applied in
order to turn on a large AC current source. One is used for each boiler in the VII.
Think of a triac as a solid state semiconductor equivalent of an electro-
mechanical relay. TRIAC is an acronym for Triode for Alternating Current.