OBSERVATION BOILER SELF CHECK

Set Appliance State:

Mains Power Off

Boiler ON/OFF pushed in, ON position
Ensure No demands
Locate system pump if required

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure

Mains Power On

Observation:

Allow the boiler to complete its self-check, this will take approximately 40 seconds, the boiler flow temperature should then be displayed (see note 2.)
If a fault code is present or the display does not operate correctly then choose that option from below.

vm vitodens 100-w 35 compact dis flow temp.jpg

Note.
1. Some fault codes will only occur with a demand.
2. The flow temperature may be seen to count down during self-check. The boiler will carry out a self-check every time the power is reinstated or appliance has been reset, any applied demands will not commence until self-check has completed.

Flow temperature displayed

Example fault code displayed