● The thermostat displays "---" if the received value is ≥5000 ppm.
● The thermostat displays "ER6" if sensor is broken.
The function is used to force start fan to improve indoor air quality.
When P003 is set as 4 (forced ventilation), the function can be enabled via
pressing button . The forced ventilation duration is 10 minutes by default and
selectable via rotary knob. The fresh air symbol , text "For" and actual fan speed
display when this function is enabled.
When forced ventilation is enabled and there are no user operations, forced
ventilation starts after 2 seconds timeout.
When P350 = 0, P003 is fixed as 4.
When P003 is set as 5 (forced ventilation, fan auto-manual), forced ventilation and
auto/manual fan speed can be selected via pressing button .
Forced ventilation can be stopped via following HMI operations:
• Operating mode change
• Green leaf
• Middle button
The function improves indoor air quality by increasing the volumetric air flow.
IAQ control is only available when the thermostat is in Comfort mode.
The function is disabled on the other operating modes.
When P450 is set as 2 (T + IAQ) or 3 (T + r.h. + IAQ), IAQ control is enabled. This
function adjusts indoor air quality via damper when the measured IAQ - CO
2
is
higher than the setpoint (P023). The factory setting is 1000 ppm.
The fresh air symbol displays when the damper is open.
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