Fault Finder - Worcester 50/70 User Instructions & Customer Care Manual

8
A call-out charge will be made where:
The appliance has been installed for over 24 months
The appliance has been installed for more than 1 year but less
than 2 years and has not had a first annual service by an
approved company.
Our Field Service Engineer finds no fault with the appliance
(see note).
The cause of breakdown is misuse or with other parts of your
plumbing/heating system, or with equipment not supplied by
Worcester.
NOTE: Invoices for attendance and/or repair work carried out
on your Worcester Bosch boiler by any third party will not be
accepted.

FAULT FINDER

If your boiler is not operating, it is suggested that you go
through the following simple checks before either calling your
installer or Worcester Heat Systems.
SYMPTOM POSSIBLE CAUSE
Boiler does not fire and There is no demand for heat
burner lockout lamp is from external control
not illuminated equipment
There is no demand for heat
from the boiler temperature
control thermostat.
The automatic reset overheat
thermostat has operated.
Manual reset overheat
thermostat has operated.
There is no electricity supply to
the boiler.
Boiler does not fire and The boiler has attempted to fire,
burner lockout lamp is but has gone to lockout.
illuminated
OR
OR
CHECK/REMEDY
• Check the programmer is programmed for
hot water and/or central heating and re-
programme if necessary.
(see programmer operating instructions).
• If the boiler is programmed for central
heating, check the room thermostat is
turned on.
• Check any other control devices fitted.
• Turn the temperature control knob to
maximum.
• If the boiler is hot allow time to self reset.
• Press the reset button
(see section 'High-limit thermostat.)
• Check power supply is switched on.
• Check the external power supply fuse.
• Remove the appliance front cover and
depress the lockout reset button on the
burner. (See section 'Lockout'.)
• Check the level in your oil tank and
replenish if necessary.