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TROUBLESHOOTING
NO HOT WATER
Check the mains power is turned
on and ensure mode knob (C) is
in the summer or winter position
Is water coming out of the hot
water tap when turned on?
YES
See boiler "Display Functions"
section. If "Boiler off" is displayed
then contact Keston Customer
S e r v i c e s H e l p l i n e i f y o u r
appliance is under warranty or a
Gas Safe Registered Engineer,
in IE a Registered Gas Installer
(RGII), if out of warranty
Contact a Gas Safe Registered
Engineer or in IE a Registered Gas
Installer (RGII)
NO CENTRAL HEATING
Check the mains power is turned
on and ensure mode knob (C) is
in the winter position
NO
Check the programmer (internal
or external to the boiler) is in
an "ON" position and the room
thermostat is turned up
Does the boiler operate and
provide central heating?
Check the time settings on the
programmer are as you require
and adjust if necessary
See boiler "Display Functions"
section. If "Boiler off" is displayed
t h e n c o n t a c t a G a s S a f e
Registered Engineer or in IE a
Registered Gas Installer (RGII)
NO
YES
11
NO HOT WATER OR
CENTRAL HEATING
Check the mains power is turned
on and ensure mode knob (C) is
in the winter position
Does the boiler have a display
showing on the front control
panel?
YES
See boiler "Display Functions"
section
Contact a Gas Safe Registered
Engineer or in IE a Registered
Gas Installer (RGII)
NO
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