MTD ERV 350, ERV 365 On the position of the valves, Malfunctions, Cleaning Valves in the Home

•Push the new filter cloths (E) over the filter brackets (F).

•Fasten the clamps (C) again.

•Push the filters (A) back into the ComfoAir 350.

E

F

•Insert the plug of the MTD-ERV 350 into the plug socket again.

•Press " " to cancel the filter indication.

2

Ensure that you ALWAYS install all the valves in exactly the same position (and in the same ventilation slot in the wall or ceiling) after cleaning, otherwise opti- mum operation of the ventilation system cannot be assured.

The ventilation air is admitted and discharged via valves. Gaps under the doors in the dwelling en- sure that the air circulates in the right direction. In order to ensure that the right volume of ventilation air is maintained in the right rooms, pay attention to the following points:

•Do not seal the gaps.

•Do not change the setting of the valves.

•Do not interchange the valves.

Replace all filters (at least) once a year.

2.5.2 Cleaning Valves (in the Home)

The ventilation system is equipped with the follow- ing valves:

Exhaust air valve (STB) Exhaust air valve (STC)

Exhaust air valve (STV) Exhaust air valve (STK)

Supply air valve (STH)

These valves have to be cleaned (at least) twice a year.

•Remove the valve from the wall or ceiling.

•Clean the valve in a warm soap solution.

•Rinse the valve thoroughly and dry it carefully.

•InstallthevalveagainEXACTLYINTHESAME POSITION (and IN THE SAME HOLE).

•Repeat this procedure for the other valves.

On the position of the valves ...

Theinstallerhassetallthevalvessothattheventila- tion system operates optimally with respect to the volumetric air flows. Do not therefore change the setting of the valves.

2.6Malfunctions

A malfunction in the MTD-ERV 350 is displayed as follows:

•A malfunction indication appears on the dis- play of the CC Ease.

•The malfunction LED on the 3-position switch lights up.

These measures are described in more detail in the following sections.

2.6.1 Malfunction indication on the CC Ease Display

In the event of a malfunction, a malfunction code appearsontheCCEasedisplay.Thedisplaythenal- waysshowsan'A'or'E'codewiththecorresponding numbers. By referring to the overview of malfunc- tions in section 4.7.1, you can find out what the par- ticular malfunction indication means.

2.6.2 3-positionSwitchwithMalfunctionLED

In the event of a malfunction, 3-position switches with a malfunction LED start to light up. Depending on the type of 3-position switch, this takes place in one of two ways:

•3-position switch with malfunction LED.

∀ ! The LED lights up in the event of a mal- function (and in the event of a filter warning).

•Wireless 3-position switch with malfunction

LED.

∀ ! The LEDs light up as soon as the 3-posi-

tion switch is used. The LED lights up green once to signal that a communication has been made. In the event of a malfunc- tion or a 'Filter dirty' warning, both LEDs light up red three times. Finally both LEDs light

Instructions for the User 15