Servicing; General - Vaillant ecoMAX pro Instructions For Use Installation And Servicing

14 Servicing

14.1 General

DANGER!
It is law that all servicing work is carried out by
a competent person (CORGI registered).
Inspections/Maintenance work not carried out
by a competent person can result in damage to
property and personal injury.
DANGER!
Electrocution by touching live parts can be
fatal!
The supply terminals in the appliance switch
box are live even if the main ON/OFF switch is
turned off.
Protect the switch box from spray water.
Before working on the appliance, turn off the
power supply and secure against restart!
All routine servicing requirements can be achieved by the
removal of the front panel, inner panel and chassis front
only.
Remove the two screws on the underside of the front
panel and lift off. Undo the two screws on the front of
inner panel and lift off, see fig 14.1.
To remove chassis front drop down the control panel into
the service position.
Remove the four screws from the chassis front, see fig
14.2.
Remove the chassis front by pulling it out at the top from
its retaining slots.
NOTE:
When replacing chassis front panel ensure
the bottom fits behind lip.
Unless stated otherwise any part removed during
servicing should be replaced in the reverse order to
removal.
IMPORTANT:
Before starting any maintenance work:
- Isolate the mains electricity supply by disconnecting
the plug at the socket outlet (if there is only an isolating
switch, remove the fuse from the switch).
- Turn off the gas supply at the gas service valve fitted to
the boiler
- When removing any water carrying components
ensure that the water is kept away from all electrical
components.
- Always use new seals and O-rings when replacing
parts.
- Always test for gas soundness and always carry out
functional checks after any service work and after
exchanging any gas carrying components.
- Always check earth continuity, polarity and resistance to
earth with a multimeter after any service work and after
exchanging any electrical component.
Instructions for Use, Installation and Servicing ecoMAX pro
NOTE:
The boiler is fitted with a combustion analysis
test point. A suitable combustion analyser
can be connected to this point to establish the
combustion performance of the boiler.
It is not necessary to check the CO
or adjust the air ratio of the boiler during
the annual service. Checking/adjustment of
this value is only required in the following
instances; replacement of gas valve or fan,
conversion from Natural Gas/ LPG or if incorrect
combustion is suspected.
CHASSIS
FRONT
SECURING
SCREW
(4 OFF)
CONTROL PANEL
SERVICE POSITION
content
2
Fig 14.1
Fig 14.2
27