Manual Vaillant ecoTEC plus 837 (page 13 of 16) (English)

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13Instructions for use ecoTEC

4.8.1 Problems due to low system water pressure

The device switches to “Fault” if the water pressure in

the heating system is too low. This malfunction is indi-

cated by the fault code “F. 2 2 ” (dry fire) or “F. 2 3 ” or

“F. 24 ” (lack of water).

You can only start up the appliance again when the

heating system is sufficiently filled with water.

4.8.2 Ignition problems

bar

iFP

plus pro

Fig. 4.17 Troubleshooting

If the burner fails to ignite after five attempts, the

device does not start up and switches to “Fault”. This is

indicated by the fault code “F. 2 8 ” or “F. 29 ” in the dis-

play. On ecoTEC plus appliances the display also shows

the flame symbol with a cross through it (1). On ecoTEC

pro appliances, the red LED (2) also lights up.

Automatic ignition can only take place after you manual-

ly reset the fault.

• To reset the fault, press the reset button (3) and hold

it down for one second.

Caution

If the boiler still shuts off after three attempts

of resetting, please consult your installer or

Vaillant Service Solutions.

4.8.3 Flue problems

The appliances are fitted with a fan. If the fan does not

work properly, the appliance will switch itself off.

The display shows the symbols

and and the fault

message “F. 32 ”.

Note

If contacting Vaillant Service Solutions please

remember to quote the fault code, as this will

help to pinpoint the fault.

4.9 Turning off the boiler

bar

iFP

Fig. 4.18 Switching off the appliance

• Turn the main ON/OFF control (1) to the „0“ position.

Caution

The boiler frost protection and monitoring sys-

tems are only active when the main ON/OFF

control of the appliance is in the “I” position

and it is not disconnected from the main power

supply.

To ensure that these protection devices remain active,

switch your boiler on and off using the external control-

ler.

Note

If the appliance is switched off for a long time

(for example when you are on holiday) you

should also turn off the gas supply, the cold

water service valve and the electrical supply.

Note

Do not turn the ecoTEC system boilers OFF if a

hot water cylinder is also incorporated in the

system unless there is no demand for domestic

hot water.

Operation 4

I have a Vaillant ecoTEC plus 837. The control panel is quite different to the on line manuals. There is one Contol panel window and 2 sets of +/- buttons below. There is also a small button displaying a flame. The power is on (can hear fan) but NOTHING on the control button.....and NO heating!
Can anyone enlighten/ help me? Submitted on 10-2-2022 at 19:03
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Vaillant ecoTEC plus 837 Manual

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