SATK40 & Procyl
®
7
Safety thermostat cutout - Error code: 69
LOW temperature setting
The HIU constantly monitors the heating flow temperature and
includes a safety thermostat.
If the thermostat is activated during a general cycle, the
circulation pump will immediately stop and the mixing valve
will close.
Safety thermostat activation is indicated by a steady, red fault
LED on the electronic controller. This fault locks all functions.
In the event of a power failure, the thermal safety valve
prevents hot water for heating purposes from entering the
system.
After the user has reset the isolation imposed by the safety
thermostat, the shut-off valve can only be re-enabled when the
mixing/modulating valves are completely closed again.
This means that if a domestic water cycle is in progress, the
activation of the shut-off valve will be postponed until the end
of that domestic water cycle.
Removing a fault
Before resetting the controller, the manual
reset button will need to be pressed.
Switch setting incorrect - Error code: 79
Removing a fault
Restore correct dip switch settings (see page 8)
79
69
