Worcester GB162-50 Installation And Servicing Instructions page 55

Main Sub
display display
z z
code code
[0/c/\| [2/8/3|
e e
2)
[0/e/\| [2/6/5|
e e
2)
[0/h/\| [2/0/3|
e e
2)
[0/l/\| [2/8/4|
e e
2)
[0/u/\| [2/7/0|
e e
2)
[0/y/\| [2/0/4|
e e
2)
[0/y/\| [2/7/6|
e e
[0/y/\| [2/7/7|
e e
[0/y/\| [2/8/5|
e e
[1/l/\| [2/1/1|
e e
[2/e/\| [2/0/7|
e e
[2/f/\| [2/6/0|
e e
[2/f/\| [2/7/1|
e e
[2/p/\| [2/1/2|
e e
[2/u/\| [2/1/3|
e e
[2/y/\| [2/8/1|
e e
Table 24 Display codes
6720813171 (2015/04)
Display code
z
Key to display code
Pre-operative phase:
The boiler prepares for a burner start-up whenever a heat
demand or a DHW request arises.
Readiness for operation:
The boiler is in standby mode. There is a current heat
demand, but too much energy has been supplied.
Readiness for operation:
The boiler is in standby mode. There is no current heat
demand.
Ignition phase:
The gas valve is activated.
Start-up phase:
The boiler starts up after activation of the mains power
supply or completion of a system reset. This code is
displayed for a maximum of 4 minutes.
Operating phase:
The flow temperature sensor has detected that the
current flow temperature is higher than the flow
temperature setting on the BC10, or that it is higher than
the flow temperature. Calculated according to heating
requirements, or that it is higher than the flow
temperature calculated for the DHW mode.
e
Fault:
The flow temperature sensor has measured a current flow
temperature higher than 95 °C.
e
Fault:
The safety temperature sensor has measured a current
safety temperature higher than 95 °C.
e
Fault:
The return temperature sensor has measured a current
return temperature higher than 95 °C.
e
Fault:
There is no connection between contacts 78 and 50 of
the UBA 3 installation base.
e
Fault:
The system pressure is too low (less than 0.2 bar).
e
Fault:
The flow temperature sensor has not, after burner start-
up, detected any temperature increase in the heating
system water.
e
Fault:
The heating water temperature difference, measured
between the flow temperature sensor and the safety
temperature sensor, is too high.
e
Fault:
The flow temperature sensor has measured a heating
water temperature increase of over 5 °C/s.
e
Fault:
The temperature difference measured between the flow
temperature sensor and the return temperature sensor, is
more than 50 °C.
e
Fault:
The pump has stopped or is running without water.
Display codes
Reset
requi-
Display information
LED on
red? UBA 3 Other effects
Off
Off
Off
Off
Off
Off The room temperature is not
possibly reached.
No Off The room temperature is not
possibly reached.
4) 5)
No Off The room temperature is not
possibly reached.
4) 5)
No Off The room temperature is not
possibly reached.
4) 5)
No Off No heating operation and no
DHW.
No Off No heating operation and no
DHW.
No Off
No Off
4) 5)
No Off
4) 5)
No Off
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