Potterton 30e User Manual page 4

FOR LONGER SHUT DOWN PERIODS
Turn the boiler thermostat to '0', isolate the electrical supply at the isolating switch, or pull the plug out of its socket.
NOTE:
If the system is fitted with a low limit thermostat and protection of the system is required during cold weather all
that is required, is for the programmer to be turned to the 'OFF' position. This will allow the boiler to cycle if the
temperature within the house becomes too low.
IMPORTANT
Gas and electricity are required to operate your boiler. Its performance will not be affected by normal variation in
gas or electricity supply, but a gas or electricity failure will put the boiler out of operation. It will automatically re-
start when the supply is restored, provided that the time clock and/or thermostats are in an 'ON' position.
In the event of your boiler not working, there are several checks you should carry out before calling in a service
engineer, as this could save you unnecessary expense.
1. Check that the gas, electricity and water are all turned on at the main supply.
2. Check that the time control, if fitted, is in an 'ON' period.
3. Check that all thermostats in the system are not on low settings.
4. Overheat Limit Thermostat
The boiler is fitted with a safety thermostat to protect against overheating of the water. Should the boiler fail
to light, allow it to cool and press the reset button. Access to the button is through a hole in the underside of
the controls cover, see illustration on front page. If the problem persists, turn off the boiler and consult your
local Gas Region or Service Engineer.
Note: Interruption of the electrical supply to the boiler may also cause the overheat limit thermostat to
operate.
Having checked these points, run through the lighting procedure once more and if the boiler still fails to light, call in
your local service engineer.
CARE OF YOUR BOI LER AND SYSTEM
Regular skilled servicing is required to keep your boiler operating safely and efficiently throughout its long working
life.
It is also advisable to have the whole heating system checked over annually, so that excessive costs are not incurred
by such things as air temperature thermostats or radiator valves getting out of adjustment. Servicing should be
4