Fault Codes - Keston System s30 User Manual

8.

FAULT CODES

DISPLAY CODE ON BOILER
F 1
F 2
F 3
F 4 L 4
F 5 L 5
F 6
F 7
F 9 L 9
L 1
L 2
L 6
L C
F U
User's
DESCRIPTION
Low Water Pressure Check system water pressure is between 1 & 1.5bar on the system pressure gauge. To
re-pressurise the system see Section 3. If the boiler still fails to operate then please 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).
Flame Loss
1. Check other gas appliances in the house are working to confirm a supply is present in
2. If other appliances do not work or there are no other appliances, check the gas supply
Restart the appliance - if the boiler fails to operate then please contact Keston (if under
Fan Fault
warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty
period. In IE contact a Registered Gas Installer (RGII).
Flow Thermistor Restart the appliance - if the boiler fails to operate then please 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).
Return Thermistor
Restart the appliance - if the boiler fails to operate then please 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).
Outside Sensor Failure Restart the appliance - if the boiler fails to operate then please 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).
Low Mains Voltage Contact a qualified electrician or your electricity provider.
Unconfigured PCB Unconfigured PCB. Please 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).
Flow Temperature Overheat
Check system water pressure is between 1 & 1.5bar on the system pressure gauge.
To re-pressurise the system see Section 4. If the boiler fails to operate then please contact
or No Water Flow
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).
Ignition Lockout
1. Check condensate Pipe for blockages (refer to Section 3)
2. Check other gas appliances in the house are working to confirm a supply is present in
3. If other appliances do not work or there are no other appliances, check the gas supply
False Flame Lockout Restart the appliance - if the boiler fails to operate then please 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).
5 Boiler Restarts in 15 minutes 1. Turn electrical supply to boiler off and on.
2. If the boiler fails to operate please contact Keston (if under warranty) or alternatively
Flow/Return Differential > If the boiler fails to operate then please contact Keston (if under warranty) or alternatively
a Gas Safe Registered Engineer if outside of the warranty period. In IE contact a
50°C
Registered Gas Installer (RGII).
ACTION
the property.
is on at the meter and/or pre payment meter has credit. If the boiler fails to operate
then please 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).
the property.
is on at the meter and/or pre payment meter has credit. If the boiler fails to operate
then please 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).
a Gas Safe Registered Engineer if outside of the warranty period. In IE contact a
Registered Gas Installer (RGII).
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