Baxi Ecogen 24/1.0 Installation & Servicing Instructions Manual page 80

3. To perform a reset, remove the bottom panel by undoing the 4 M4 pozi headed screws.
4. Using a small pointed non­metallic instrument such as a matchstick, press and hold in for at least 3 seconds (any time between 3 and 20 seconds) the reset button on the
underside of the PCB (see Fig. 81). Allow time for the error to reset.
5. If the condition causing the error has been rectified the error code should reset and allow the appliance to run.
6. Replace the bottom panel.
7. If the fault persists then a component change may be required. If the fault is suspected to be related to the engine the technical help line should be contacted.
Fig. 81
17.9 Initial Fault Finding Checks
1. Check that gas, water and electrical supplies are available at the boiler.
2. Electrical supply = 230V ~ 50 Hz.
3. If sealed system check that CH water system is pressurised to 0.5 bar minimum when the boiler is cold.
4. The preferred minimum gas pressure is 20 mbar.
5. Carry out electrical system checks, i.e. Earth Continuity, Resistance to Earth, Short Circuit and Polarity with a suitable meter.
NOTE: These checks must be repeated after any servicing or fault finding.
6. Ensure all external controls are calling for heat and check all external and internal fuses. Before any servicing or replacement of parts, ensure the gas and electrical
supplies are isolated.
SAFETY NOTE: Before removing the front cover; the correct shut down sequence must be followed for your own safety.
Before servicing, ensure that the boiler is cool with the engine head below 120°C ­ otherwise there is a risk of electric shock
even with the supplies disconnected.
The head temperature may be accessed via the THINK Controller. Press the MENU Button. Turn the Selector Button to
highlight 'Information'. Press the Button to select. Turn Selector Button until 'head temp actual value' is shown.
Ensure that both the gas and electrical supplies to the appliance are isolated ­ wait a minimum of 6 minutes 30 seconds
before any work is started ­ again there is a risk of electric shock even with the supplies disconnected.
page 81
17.10 Fault Finding Solutions
If the display on the THINK Controller does not appear to be working properly go to fault finding Section A, otherwise follow the guidance below.
Reset the appliance (see Section 17.3 ­ 17.5) ­ if the error code persists further investigation is required. The error codes have been split into groups: ­
Errors 10 to 99 & 121,122 except 20 & 40 go to section B
Errors 20, 40, 157, 257, 258, 259, 301, 302, 303 & 304 & 396 to 399 go to section C
Errors 114 & 158 go to section D
Errors 261 & 262 go to section E
Errors 253, 254, 263, 264, 265, 309, 310, 311 & 319, 394, 395, 422 & 423 go to section F
Errors 266 & 267 go to section G
Errors 268 & 269 go to section H
Errors 164, 270, 274, 278, 400 & 428 go to section I
Error 284 go to section J
For errors 280,281,282,283 & 285 see section 18.0 Engine Fault Finding
For errors 286 to 308 see sections K to O
Refer to section 16 Electrical connections for the positions of the terminals and components.
Section A ­ THINK Controller