Worcester 35CDi User Manual

Supplied By www.heating spares.co Tel. 0161 620 6677
35
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 15.4.11).
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 15.4.18).
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).
Check primary heat
exchanger for scaling
and replace if
necessary. If this is not
the cause, replace
control board.
(Section 15.4.11)
Yes

Worcester 35CDi Specifications

General

Model	35CDi
Output	35kW
ERP Rating	A
Domestic Hot Water Output	35kW
Max Working Pressure	3 bar
Fuel Type	Natural Gas