Worcester C1 User Manual

39
Light indication
during fault not
covered by above
details.
Control board is likely
to be wet or damaged
or malfunctioning.
Check for wet board or
connections. Dry and
re-use or replace
control board. (Section
15.4.10).
FAIL POINT L
Hot water
temperature always
too hot during a
demand (not
regulating).
Hot water sensor
could be off or poorly
fixed to pipe.
Repair or replace
sensor.
(Section 15.4.15).
Water temperature
very low/low gas
pressure (with all
knobs set to
maximum)?
Remove multiway
connector from board
position ST16. Is the
resistance across
contacts 1 and 2
(blue wires) below
60 ohms.
Remove blue (top)
connector from gas
valve.
Is there continuity
along blue wires to
multiway connector?
Is the gas set to correct
pressure?
Set pressure.
No
No
Repair wires or replace
harness.
No
Yes
Yes
Replace gas valve.
(Section 15.4.1).
Replace control board.
(Section 15.4.10).
Yes
Turn to 'NORM'
position
The gas valve mode
switch (concealed by
the facia side panel)
is not set correctly
FAIL POINT K

Worcester C1 Specifications

General

Brand	Worcester
Model	C1
Category	Boiler
Language	English