Tectro TAW 200 Manuel D'utilisation Et D'installation page 48

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When the air inlet temperature is -5ºC, the heat pump will stop and the
electrical heating element will now heat the water to the desired water
temperature.
When the air inlet temperature increases to -3ºC the heat pump will automatically
start again and the electrical heating element will be stopped automatically.
Enable/disable fan function when heat pump stops.
By pressing the button and hold it for five seconds the fan ventilation
function can be enabled or disabled. If this function is enabled the Fan
ventilation Icon appears on the display, the fan will continue to ventilate
the air when the water temperature reaches the set point and the heat pump
boiler switches to stand-by position. If this function is disabled the fan will
stop when the water temperature reaches the set point and the heat pump
boiler switches to the stand-by position.
Disinfection.
To prevent legionella the heat pump boiler is equipped with anti legionella
function. This function will heat up the water once every week up to 65°C
and keeps this temperature for half an hour after which the heat pump boiler
wil return to the set program. This time is sufficient to prevent contamination
of the water with the legionella bacteria. The disinfection starting time is
adjustable with parameter 13.
BE CAREFUL WHEN USING A THERMOSTATIC TAP.
The scale of the thermostat hot water tap should be adjusted to an inlet
water temperature of 55°C. However, during the disinfection, the hot
water temperature will reach the set value of parameter 4. ( default
70°C.) The thermostatic hot water tap scale does not match the normal
outlet temperature of the domestic hot water any more. The domestic
hot water temperature will become higher as the temperature shown
on the thermostat valve scale.
Error codes and reset
If there is a malfuntion during stand-by or running status the heat pump
boiler will stop automatically and show the error code on the screen of the
controller. To reset the heat pump boiler cut off the power by taking out the
electrical plug for 10 seconds. Then switch the power on again. If the error
code returns contact your local dealer. See chapter H.
Illustration 13