Keston Combi C35 User Manual page 16

9. (CONT'D) DISPLAY FUNCTIONS - FAULT MESSAGES
BOILER DISPLAY MESSAGE
Overheat Lockout 1/4
With Boiler Off &
System Cold
Fill system to 1.0 Bar
Restart Menu
Overheat Lockout 2/4
Bleed Radiators
Refill System to 1.0 Bar
Restart Menu
Overheat Lockout 3/4
Check Radiator Valves
And Boiler Valves
Are Open
Restart Menu
Overheat Lockout 4/4
Restart Boiler
If Fault Persists
Contact Installer
Restart Menu
ACTION
Check system pressure is between 1 & 1.5 bar on the pressure gauge. Restart the appliance.
If the boiler fails to operate then pelase contact Keston (if under warranty) or alternatively a
Gas Safe Registered Engineer if outside of the warranty period. In IE contact a Registered
Gas Installer (RGII).
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