SATK20 & SATK30
18
Fault Finding
Fault
Indications
Possible Cause of Fault
Operations to be Performed
The water is not
heating
DHW LED on
primary circuit isolating valve closed
open the isolating valve
modulating valve actuator connector disconnected
re-connect actuator connector
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
restore correct connection
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
FAULT led lit + error
code 6 active
DHW temperature probe disconnected
re-connect probe
DHW temperature probe faulty
call qualified personnel to have it replaced
FAULT led lit + error
code 79 active
DHW temperature probe faulty
restore correct switch setting
DHW Led off
DHW priority flow meter disconnected
re-connect flow meter
DHW priority flow meter faulty
call qualified personnel to have it replaced
all LEDs are 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
DHW led on
domestic water cycle temperature set point too low
increase set point
HIU strainer 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
valve obturator blocked in intermediate position
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
The hot water
temperature reached
is too high
DHW led on
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
Hot water flow rate
is insufficient
DHW led on
HIU strainer clogged
call qualified personnel to have it replaced
possible domestic water system shut-off valves
partly open
open the valves
centralised domestic circuit cold water flow rate insufficient
call qualified personnel to have it serviced
The is no hot water
flow
DHW led off
possible domestic water system shut-off valves closed
open the valves
no cold water in centralised domestic circuit
call qualified personnel to have it serviced
HIU strainer completely clogged
call qualified personnel to have it serviced
heat exchanger completely blocked
call qualified personnel to have it serviced
