Baxi ECOGEN 24/1.0, Installation & Servicing Instructions Manual

Page: 78 / 94

301: Eng head
overt SW Engine head control temperature greater than 540 degrees C AR C
302: Eng head
t'couple diff Magnitude of the difference between the engine head control and limit thermocouples is
greater than 100 degrees C UR C
303: Eng head
t'couple cont Engine head control thermocouple failure UR C
304: Eng head
t'couple lim Engine head limit thermocouple failure UR C
305: Eng under
current Engine current less than 0.1A, 60 seconds after grid connection SR L
308: Stop
resistor integrity The stop resister integrity check has failed SR M
309: Power fail
detection Power failure detected AR F
310: Power mon
comm fail No data received from the power meter IC in the last 10 seconds or the power monitor
failed to register with the EGC microcontroller within 10 seconds of power up AR F
311: EGC
comm. failure Communication timeout or communication failure AR F
394: Eng BCU
com fail Engine BCU comm. failure ARP F
395: Supp BCU
com fail Supplementary BCU comm. failure ARP F
396: Eng head
control therm. Engine head control thermocouple false reading AR C
397: Eng head
Limit therm. Engine head safety thermocouple false reading AR C
398: Eng head
control rise Engine head control thermocouple rise rate less than30 deg C in first min. AR C
399: Eng head
Limit rise Engine head safety thermocouple rise rate less than30 deg C in first min AR C
400: Flow dir
heat gen Return temperature > flow temperature for longer than 3 minutes UR UR I
421: Eng bu exc
temp diff h'ex Engine burner excessive temperature difference across the heat exchanger AR I
422: BCU Eng
bu inconsistent Transmitted state of the engine burner BCU isn't consistent AR F
423: BCU Supp
bu inconsistent Transmitted state of the supplementary burner BCU isn't consistent AR F
424: Rep. loss
of flame Eng bu Repeated loss of flame engine burner UR E
425: Rep. loss
of flame Supp
bu repeated loss of flame supplementary burner UR E
428: Boiler flow
Eng bu Flow has been < 7 L/min for more than 30 minutes AR I
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 ­ which indicates that an error or fault has
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.