OBSERVATION BOILER SELF CHECK

Set Appliance State:

Mains Power Off

Boiler ON/OFF pushed in, ON position
Ensure No demands

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 25 kw combi 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