Error History; Reading Out And Clearing The Error Memory - DeDietrich C 340 Series Installation And User Manual

12 Troubleshooting
Code Display text
E.04.11 VPS
E.04.12 False flame
E.04.13 Fan
E.04.15 FlueGas Pipe Blocked
E.04.17 GasValve Driver Err.
E.04.23 Internal Error
E.04.250 Internal error
E.04.254 Unknown
12.2

Error history

174 C 340 / C 640
Description
VPS Gas Valve proving failed
False flame detected before burner
start
Fan speed has exceeded normal op­
erating range
The flue gas pipe is blocked
The driver for the gas valve is bro­
ken
Gas Valve Control internal locking
Gas valve relay error detected
Unknown
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.
12.2.1

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
Solution
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
False flame signal:
The burner remains very hot: Set the O
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
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
Flue gas outlet is blocked:
Check that the flue gas outlet is not blocked
Restart the boiler
Gas valve unit fault:
Bad connection: check the wiring and connec­
tors
Faulty gas valve unit: Replace the gas valve
unit
Restart the boiler
Replace the CU-GH
-
-
].
button to confirm the selection.
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