Extreme Cold Weather - Worcester GB162-50 User Instructions

Manual operation menu
Press the e button.
Step 5
[p/1.6}
Step 6 Display value. Currently measured system pressure in bar. Also see section 10.1, page 8.
Press the e button.
Step 7
[-/h//}
Step 8 Display code: Operating phase: Also see section 10.2, page 8. The boiler is in manual operation mode.
This means that the boiler is in heating mode while there is no heat request from the controller. During
manual operation the "Settings" menu (table from step 3) can be used to temporarily change the target
boiler performance.
Note: If the boiler performance has been changed temporarily, this must be set again after ending manual
operation, according to the "Settings" menu (table, page).
Press the e button.
Step 9
[\/2/4}
Step 10 Display value. Currently measured CH (boiler) flow temperature in °C. Also see section 10.1, page 8.
Step 11 Has there been a power failure?
Step 12 Deactivate manual operation?
Step 13 To deactivate manual operation:
Press and hold the d button for more than 2 seconds until the dot disappears.
Table 5 Manual operation
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Extreme Cold Weather

In instances where the condensate pipe work is run external or in an
unheated area, such as a garage, it can be at risk of freezing, even if
insulated.
A frozen condensate pipe will cause the boiler to shut down.
WARNING: Falling hazard!
Failure to follow this guidance can result in personal
injury.
▶ Only attempt to thaw a condense pipe that is at
ground level, which is easily accessible.
▶ Never attempt to thaw a condense pipe which is at
height.
CAUTION: Pipe damage
▶ DO NOT use boiling water to thaw the condensate
pipe!
If the condensate pipe has frozen:
▶ Locate the blockage.
It is likely that the pipe is frozen at the most exposed point external to
the building or where there is some obstruction to flow. This could be
the open end of the pipe, at a bend or elbow, or where there is a dip
in the pipe in which condensate can collect. The location of the
blockage should be identified as closely as possible before taking
further action.
▶ Thaw the frozen pipe.
The pipe can be thawed by applying a hot water bottle, a
microwaveable heating pack (the sort used for muscular aches and
pains) or a cloth soaked in hot water to the exterior of the pipe, close
to the point of blockage. Hot water can also be poured onto the pipe
from a watering can or similar container.
▶ Once the pipe has been thawed the boiler must be reset, press the
reset button for five seconds and wait two to three minutes for the
boiler to restart.
▶ If the boiler does not restart, contact Worcester's Technical Support
Team (0330 123 3366) for assistance.
▶ Contact your installer in order to find a permanent solution to the
problem.
6720813172 (2015/04)
Extreme Cold Weather
 step 1
Yes:
 step 12
No:
 step 13
Yes:
 step 5
No:
 step 1
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