Baxi Ecogen 24/1.0 Installation & Servicing Instructions Manual page 78

301: Eng head Engine head control temperature greater than 540 degrees C
overt SW
302: Eng head Magnitude of the difference between the engine head control and limit thermocouples is
t'couple diff greater than 100 degrees C
303: Eng head Engine head control thermocouple failure
t'couple cont
304: Eng head Engine head limit thermocouple failure
t'couple lim
305: Eng under Engine current less than 0.1A, 60 seconds after grid connection
current
308: Stop The stop resister integrity check has failed
resistor integrity
309: Power fail Power failure detected
detection
310: Power mon No data received from the power meter IC in the last 10 seconds or the power monitor
comm fail failed to register with the EGC microcontroller within 10 seconds of power up
311: EGC Communication timeout or communication failure
comm. failure
394: Eng BCU Engine BCU comm. failure
com fail
395: Supp BCU Supplementary BCU comm. failure
com fail
396: Eng head Engine head control thermocouple false reading
control therm.
397: Eng head Engine head safety thermocouple false reading
Limit therm.
398: Eng head Engine head control thermocouple rise rate less than30 deg C in first min.
control rise
399: Eng head Engine head safety thermocouple rise rate less than30 deg C in first min
Limit rise
400: Flow dir Return temperature > flow temperature for longer than 3 minutes
heat gen
421: Eng bu exc Engine burner excessive temperature difference across the heat exchanger
temp diff h'ex
422: BCU Eng Transmitted state of the engine burner BCU isn't consistent
bu inconsistent
423: BCU Supp Transmitted state of the supplementary burner BCU isn't consistent
bu inconsistent
424: Rep. loss Repeated loss of flame engine burner
of flame Eng bu
425: Rep. loss repeated loss of flame supplementary burner
of flame Supp
bu
428: Boiler flow Flow has been < 7 L/min for more than 30 minutes
Eng bu
page 79
17.5 Exceptional conditions
1. In exceptional cases, the display will show an error screen see diagram below.
2. With the following information: ­
An error number
A short description of the error
The display may show a flashing spanner, a flame crossed out or both depending on the level of the error
3. Pressing the menu button will return the THINK Controller to the standard display which will now show the following symbol ­
occurred in the appliance. After 1 minute the display will automatically revert to the error screen.
4. Press the menu button twice to revert to the error display immediately. A list of error codes is shown in section 17.4. This list contains both user reset and automatic
reset codes. Automatic codes are given here as they are capable of clearing automatically and do not necessarily indicate that a service visit is required.
AR C
UR C
UR C
UR C
SR L
SR M
AR F
AR F
AR F
ARP F
ARP F
AR C
AR C
AR C
AR C
UR UR I
AR I
AR F
AR F
UR E
UR E
AR I
which indicates that an error or fault has