Zehnder Rittling ComfoAir 550, Installer Manual, Page: 82 / 100

13 - EN
Additional programme values
Submenu Description Minimum Maximum General
Reset
P59 Confi rming the presence of an enthalpy exchanger.
• 0; Enthalpy exchanger not fi tted
• 1; Enthalpy exchanger with RH sensor.
• 2; Enthalpy exchanger without RH sensor. 0 (= No) 2 (= Yes) 0
Only a enthalpy exchanger without RH sensor can be fi tted.
Menu P6

Setting additional programmes
Additional programme values
Submenu Description Minimum Maximum General
Reset
P60 Confi rming the presence of a geothermal heat exchanger.
• 0; Geothermal heat exchanger not fi tted
• 1; Geothermal heat exchanger fi tted
• 3; Geothermal heat exchanger unregulated. 0 (= No) 3 (= Yes) 0
Only a unregulated geothermal heat exchanger can be fi tted.
Menu P7

Reading malfunctions (and system information)
(Malfunction) information values
Submenu Description Minimum Maximum General
Reset
P70 Current software version. Version number of the software (without “v”)
P71 Most recent malfunction. Code in accordance with alarm and malfunction alert
P72 Malfunction before the most recent one Code in accordance with alarm and malfunction alert
P73 Malfunction before the most recent two Code in accordance with alarm and malfunction alert
P74 Resseting malfunction(s)
• Set value tot '1' and press "OK" on the
display.
0 1
(= activate)
0
P75 General reset.
•
Press
"OK" on the display for at least 5
seconds to carry out a general reset.
All original software settings are re-
stored following a general reset.
0 1
(= activate)
0
Note:
After a general reset, the ComfoAir will ask you to reset the “nL / HL” (see P56) and “Li / Re”
(see P57) settings.
Following a general reset, all settings and programmes need to be checked and set to the right
value.
P76 Self-testing the ComfoAir 0 1
(= activate)
0
• The LED's on the display will start blinking.
• The ComfoAir will run at maximum Rotation Per Minute (RPM).
• The bypass valve will open and close.
• The preheater valve will open and close after the bypass has closed (If a preheater element is fi t-
ted).
P77 Resetting fi lter dirty counter 0 1
(= activate)
0
Note:
This resets the counter that triggers a dirty fi lter alert on the ComfoAir. This allows the fi lter to be cleaned
or replaced before the dirty fi lter alert appears.