SATK22
26
Fault Finding
Fault
Indications
Possible Cause of Fault
Operations to be Performed
The water is not
heating
blinking
icon
primary circuit isolating valve closed
open the isolating valve
modulating valve actuator disconnected from valve body
re-connect actuator
modulating valve actuator faulty
call qualified personnel to have it replaced
DHW temperature probe cable inverted with heating probe
restore correct connection
presence of air in the system
vent the system
electronic controller not working
call qualified personnel to have it replaced
valve obturator blocked in closed position
call qualified personnel to have it replaced
centralised system not working
contact person in charge of system
error code 6 active
DHW temperature probe disconnected
re-connect probe
DHW temperature probe faulty
call qualified personnel to have it replaced
error code 80 active
incorrect wiring/no credit
check electrical connections/top-up credit
constant
icon
DHW priority flow meter disconnected
re-connect flow meter
DHW priority flow meter faulty
call qualified personnel to have it replaced
Icon absent
DHW production disabled
enable DHW by means of HIU interface
display off
electricity power supply switched off
switch on electricity supply
protection fuse burnt out
call qualified personnel to have it replaced
The water is hot but
does not reach the
desired temperature
blinking
icon
domestic water cycle temperature set point too low
increase set point
primary return temperature limitation intervention
change the return temperature set
point/disable the function
primary circuit strainer of HIU clogged
call qualified personnel to have it serviced
exchanger partly clogged
call qualified personnel to have it serviced
modulating valve actuator faulty
call qualified personnel to have it replaced
modulating valve actuator connector disconnected
re-connect actuator connector
DHW temperature probe cable inverted with
heating probe
restore correct connection
excessive demand for DHW
decrease demand
electronic controller not working
call qualified personnel to have it replaced
centralised system temperature insufficient
contact person in charge of system
primary circuit flow rate insufficient
contact person in charge of system
primary flow rate limit too low
contact person in charge of system
The hot water
temperature reached
is too high
blinking
icon
domestic water cycle temperature set point too high
decrease set point
DHW temperature probe cable inverted with
heating probe
restore correct connection
modulating valve actuator faulty
call qualified personnel to have it replaced
valve obturator blocked in intermediate or open position
call qualified personnel to have it replaced
electronic controller not working
call qualified personnel to have it replaced
primary circuit excessive flow rate due to DPCV valve
malfunctioning
call qualified personnel to have it replaced
anti-legionella cycle in progress
contact person in charge of system
Hot water flow rate
is insufficient
blinking
icon
HIU strainer clogged
call qualified personnel to have it replaced
possible domestic water system shut-off valves
partly closed
open the valves
insufficient pressure in central domestic water circuit
call qualified personnel to have it serviced