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If these solutions do not cure the fault, call a qualified professional
20. Incorrect Operaton
Fault Cause Solution
The boiler doesn’t start
No gas, no water or no electricity
Check gas, water and electrical
supplies and fuses.
Air in the gas pipe
Follow the procedure in Section 14.2
(page 32)
Room thermostat switched off Turn up the room thermostat
Red indicator alight
Wait for a few minutes
Press the reset button 28 (Fig. 107, page
55) the red led will go out and the boiler
will attempt to re-light.
If the red indicator lights too frequently,
please call your local service centre.
Noises in CH system
Air present in the CH system or
insufficient pressure
Purge the system of air and increase the
system pressure (Section 2 page 6)
Radiators rise in temperature During
summer season
2 Port Valve for Central Heating stuck
open or demand for Central Heating from
Time Clock and Room Thermostat
Check the Central Heating 2 port valve,
time clock and room thermostat.
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