Worcester 35CDi II User Manual

38
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
16.4.13).
FAIL POINT K
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 16.4.14).
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 16.4.11).
Replace control board.
(Section 16.4.23).
Yes

Worcester 35CDi II Specifications

General

Model	35CDi II
Output	35kW
Mounting	Wall-mounted
Max. DHW Output	35kW
Efficiency Rating	A
ErP Heating	A
ErP Water	A
Warranty	5 years
Fuel Type	Natural Gas