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pressing the button located underneath the control box. (See fig 1.)
If the overheat thermostat persistently cuts out then your
boiler requires attention and you should call either your installer or
a service engineer.
FROST THERMOSTAT
A frost thermostat is fitted as standard to protect the boiler
only in frost conditions. If there is a possibility the central heating
/hot water system may be exposed to frost conditions, an additional
frost thermostat should be fitted. The boiler should remain
connected to the mains power supply to enable the boiler to
operate in the event of a frost condition.
LOCKOUT
A flame failure device is incorporated into the control system of
your boiler. So, should the flame fail for any reason, or should
ignition fail to initiate a satisfactory start, the boiler is automatically
locked out for safety. This lockout condition is indicated by a signal
lamp, located on the burner control box.
To reset the burner lockout condition, remove the Outdoor
Pack front cover and boiler front cover (See section "Accessing your
boiler controls") and allow two minutes before pressing the
illuminated lockout reset button, which is mounted on the burner
control box. Provided the system is still calling for heat, the burner
will then operate and commence another start cycle.
Persistent lockout indicates a fault and an engineer should be
called, so do not attempt to repeatedly restart the boiler.
FUEL
Your Worcester Danesmoor or Worcester Bosch pressure-jet boiler
is set to burn 28-second kerosene fuel.
PLEASE NOTE: This appliance must not be used with 35-
second gas oil.
FAULTS & BREAKDOWNS
Many calls made to Worcester Heat Systems to report boiler
faults or breakdowns prove to be false alarms, as there is often a
simple explanation for the apparent malfunction.
So, to help you save time and money - not to mention
frustration and inconvenience - a quick-reference faultfinder is
included on page 8.
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