Zehnder Rittling ComfoAir 350 Basic Series, Installer Manual

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EN - 16
2.10 Malfunctions
Malfunctions in the ComfoAir are reported as follows:
■
The malfunction alert appears on the display;
■
The malfunction indicator on the 3-position
switch lights up.
Malfunction alerts may not appear on the digital oper-
ating device in all cases, even though there is a mal-
function (or problem). A concise explanation of both
types of malfunction (or problem) is given in the fol-
lowing paragraphs.
2.10.1 Malfunction alerts on the digital
operating device
In the event of a malfunction, the corresponding mal-
function code will be displayed on the digital operat-
ing device of the ComfoAir.
Below is a list of the malfunction alerts on the digital
operating device.
In the chapter about troubleshooting is explained
how to solve these malfunctions
Code description
A1 NTC sensor T1 is defective.
(= outside air temperature)
A2 NTC sensor T2 is defective.
(= supply air temperature)
A3 NTC sensor T3 is defective.
( =return air temperature)
A4 NTC sensor T4 is defective.
(= exhaust air temperature)
A5 Malfunction in the bypass motor.
A6 n/a
A7 n/a
E1 Exhaust fan not rotating.
E2 Supply fan not rotating.
EA2 n/a
‘Fil’ ‘tEr’ Internal Filter is dirty.
2.10.2 3-position switch with malfunction
indicator
The 3-position switches that are fitted with a malfunc-
tion indicator show when a malfunction or filter dirty
alert has occurred. In the event of a malfunction or
filter dirty alert the indicator lights up;