Atmos A25 - Page 77

Operation and maintenance manual - EN
EN
www.atmos.cz
EN-77
4 ALARM
SENSOR TK
Failure of the boiler temperature
sensor TK in the boiler or in
the middle part of buffer tank
– the sensor is short-circuited
(damaged) or disconnected
Check the connection of the
sensor in the burner
Check the cable and sensor
for damage
Repair or replace
5 ALARM
SENSOR TSV
Failure of the waste gas or
solar sensor TSV – the sensor
is short-circuited (damaged) or
disconnected
Check the connection of the
sensor in the burner
Check the cable and sensor
for damage
Repair or replace
6 ALARM
VENTILATOR
Failure of the fan or fan speed
sensor
Check the cable of the speed
sensor and its connectors
Check whether the fan does not
size, it must be possible to turn
it easily by hand
Check the fuse on the electronic
board for the fan (1.0 A)
Repair or replace
7 ALARM
VENT 2
the same as ALARM
VENTILATOR
Failure of the exhaust blower of
the boiler or defective capacitor
under the hood of the boiler
the same as ALARM
VENTILATOR
Change the starting capacitor
for the exhaust fan
Change the exhaust fan of the
boiler.
8 ALARM RELE
Error at the output for the
external conveyor (neither
output is functional)
The external conveyor does not
feed fuel to the burner
Check and if necessary replace
the fuse for the conveyor
(0.8 A)
Check the wiring between
electronic board and socket
Broken gearbox of the
conveyor or output for
conveyor control
If you are not using the
reserve, reconnect the
conveyor terminals to the
reserve and set the parameter
S6 = 7. If you use the reserve
for other applications, replace
the electronic control unit.