Worcester 35CDi II User Manual

37
Does this fault occur in
only one of the operating
modes? CH or DHW
Replace control board
(Section 16.4.23).
Replace control board
(Section 16.4.23).
Replace control board
(Section 16.4.23).
Replace air pressure
switch (Section 16.4.2).
Note: In the unlikely
event of this not solving
the problem inspect the
pressure pick-up (Venturi)
in the fan.
Repair or replace fan
(Section 16.4.3) or
cable.
Repair or replace fan
(Section 16.4.3) or
cable.
Air pressure switch
is shorting
Replace switch
(Section 16.4.2).
28CDi and 35CDi II
24CDi,28CDi and 35CDi II
Remove fan connector
from board position ST1
and restart boiler in the
fault mode.
After 5 seconds is there
mains 230V from the left
(N) track at ST1 and right
(L) track if DHW mode?
Centre (L) track if CH
mode?

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