Code
Display text
Description
Solution
E.04.11
VPS
VPS Gas Valve proving failed
Gas leakage control fault:
Bad connection: check the wiring and connec
tors
Gas leakage control VPS faulty: Replace the
GPS
Gas valve unit faulty: Replace the gas valve
unit
E.04.12
False flame
False flame detected before burner
start
False flame signal:
The burner remains very hot: Set the O
2
Ionisation current measured but no flame
should be present: check the ionisation/ignition
electrode
Faulty gas valve: replace the gas valve
Faulty ignition transformer: replace the ignition
transformer
E.04.13
Fan
Fan speed has exceeded normal op
erating range
Fan fault:
Bad connection: check the wiring and connec
tors.
Fan operates when it should not be operating:
check for excessive chimney draught
Faulty fan: replace the fan
E.04.15
FlueGas Pipe Blocked
The flue gas pipe is blocked
Flue gas outlet is blocked:
Check that the flue gas outlet is not blocked
Restart the boiler
E.04.17
GasValve Driver Err.
The driver for the gas valve is bro
ken
Gas valve unit fault:
Bad connection: check the wiring and connec
tors
Faulty gas valve unit: Replace the gas valve
unit
E.04.23
Internal Error
Gas Valve Control internal locking
Restart the boiler
Replace the CU-GH
E.04.250
Internal error
Gas valve relay error detected
-
E.04.254
Unknown
Unknown
-
10.2 Error history
The control panel includes an error memory in which is stored a history of
the last 32 errors. Details of the boiler when the error occurred can be
read out. For example;
status
sub-status
flow temperature
return temperature
These details and others can contribute to the error solution.
10.2.1 Reading out and clearing the error memory
The error memory stores the details of the most recent errors.
1. Select the tile [ ].
2. Press the button to confirm the selection.
10 Troubleshooting
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