Troubleshooting; 11.1 Error Codes; 11.2 Fault Finding - Baxi EcoBlue System 12 Installation And Service Manual

11

Troubleshooting

11 Troubleshooting
Table Of Error Codes
20 Central Heating NTC Fault
Flue NTC Fault
28
40 Central Heating Return NTC Fault
R
109 Possible Circulation Fault
R
Safety Thermostat Operated (pump fault)
110
R
111 Safety Thermostat Operated (over temperature)
117 Primary System Water Pressure Too High
118 Primary System Water Pressure Too Low
R
125 Circulation Fault (Primary)
128 Flame Failure (no lock-out)
130 Flue NTC Operated
R
Interruption Of Gas Supply or Flame Failure
133
R
151 Flame Failure
R
160 Fan or Fan Wiring Fault
384 False Flame
The button can be pressed so that the display
shows
the following information:-
'00' alternates with Sub-Code (only when fault on
boiler) or '000'
'01' alternates with CH Flow Temperature
'02' alternates with Outside Temperature (where
Sensor fitted)
'03' alternates with stored DHW Temperature
'04' alternates with DHW Temperature
'05' alternates with System Water Pressure
'06' alternates with CH Return Temperature
'07' alternates with Flue Temperature
'08' - not used
'09' alternates with Collector Temperature
'10' alternates with Zone 1 CH Flow Temperature
'11' alternates with Zone 2 CH Flow Temperature
'12' alternates with Ionization current
'13' alternates with Burner working hours
'14' alternates with Zone 1 CH mode
'15' alternates with Zone 2 CH mode
'16' alternates with DHW circuit operating mode
'17' alternates with Boiler operating mode
'18' alternates with Solar plant operating mode
'19' alternates with Manufacturer information
'20' alternates with Manufacturer information
64 EcoBlue System

11.1 Error Codes

1. If a fault occurs on the boiler an error code may be shown by
the facia display.
2. The codes are a flashing number, either two or three digit,
preceded by the symbol
followed by 20, 28, 40 or 160 indicates possible faulty
components.
110 and 111 indicate overheat of the primary system water.
117 is displayed when the primary water pressure is greater
than 2.7 bar. Restoring the correct pressure will reset the error.
118 is displayed when the primary water pressure is less than
0.5 bar. Restoring the correct pressure will reset the error.
133, indicates that the gas supply has been interrupted,
ignition has failed or the flame has not been detected.
128 is displayed if there has been a flame failure during
normal operation.
125 is displayed in either of two situations:-
i) If within 15 seconds of the burner lighting the boiler
temperature has not changed by 1°C.
ii) If within 10 minutes of the burner lighting the boiler actual
temperature twice exceeds the selected temperature by 30°.
In these instances poor primary circulation is indicated.
3. By pressing the 'Reset' button for 1 to 3 seconds when
110, 125 & 133 are displayed it is possible to relight the boiler.
4. If this does not have any effect, or the codes are displayed
regularly further investigation is required.

11.2 Fault Finding

1. Check that gas, water and electrical supplies are available at
the boiler.
2. Electrical supply = 230V ~ 50 Hz.
3. The preferred minimum gas pressure is 20 mb (NG).
4. 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.
5. 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.
:-
7219708 - 01 (04/15)