HAMWORTHY HEATING LTD
41
FLEET V series
500001217/D
12.0 RECOMMENDED SPARES
Please Note:-
To ensure the correct spare parts are despatched by our spares department, it is imperative that the
complete Boiler/Module/Control Panel Serial Numbers are given. The Boiler and Module Serial Numbers are located on
the Data Plates affixed to the combustion chamber front panel. The Electrical Panel Serial Number is located inside the
Control panel on the rating label. These numbers
MUST
be quoted when ordering spare parts.
SPARES ITEM
PART No.
ELECTRICAL ITEMS
LMU control - F175V Nat Gas ...................................................................................................................................... 533901634
LMU control - F200V Nat Gas ...................................................................................................................................... 533901635
LMU control - F250V Nat Gas ...................................................................................................................................... 533901636
LMU control - F300V Nat Gas ...................................................................................................................................... 533901637
LMU control - F350V NatGas ....................................................................................................................................... 533901638
Display PCB ................................................................................................................................................................... 533901437
HT Ignition Transformer ............................................................................................................................................... 533901542
Flow / Return Sensor ...................................................................................................................................................... 533901549
Flue Gas Sensor . ........................................................................................................................................................... 533901549
Water Flow Switch . ........................................................................................................................................................ 533901548
Temperature Limiter ....................................................................................................................................................... 533901583
HT Ignitor Electrode ........................................................................................................................................................ 533805029
Ht Ignitor Lead .............................................................................................................................................................533901547
Flame Sensing Probe ..................................................................................................................................................... 533805021
On/Off switch . ................................................................................................................................................................ 533925009
Fascia fuse T2A . ............................................................................................................................................................ 533922009
Pump relay ...................................................................................................................................................................... 533901639
Pump fuse T10A . ........................................................................................................................................................... 533901640
Clip in Module - vfc + 0~10v - AGU2.511A109 ............................................................................................................ 533901438
Clip in Module - LPB Bus communication - OCI420A109 ........................................................................................... 533901456
All models - reassemble in reverse order using new
gaskets and check all joints for gas soundness.
11.8 Main control pcb - LMU - refer to spares list
The LMU is located by two screws on the electrical
control panel which is secured to the boiler chassis .
Carefully disconnect all plug connections from the LMU,
taking note of their location. The plugs are polarised to
prevent incorrect fitting.
If a ‘clip in module’ is fitted, this must be removed and
transferred to the new LMU. Carefully disconnect the
plug connecting the clip in to terminal X40 or X50.
Depress the latch at the plug end of the clip in and
disengage the module from the LMU.
Fit the replacement control in reverse order. Remember
to apply the parameters local to the installation - refer to
section 8.
11.9 Display screen - Part no. 533901437
Carefully disconnect the ribbon cable connecting the
screen to the LMU terminal X30. Remove the 4 screws
securing the screen to the fascia moulding, taking care
not to loose the button covers, which are loose when the
assembly is separated.
Refit the button covers to the new display and secure to
the fascia moulding.
11.10 Low gas pressure switch - Part no. 533901497
Isolate the gas supply using the valve located in the
bottom right hand corner.
Disconnect the electrical plug after removing the
securing screw. Remove the screw securing the switch
to the gas valve body.
When re-fitting a replacement switch remember to set
the operating pressure to 12mbar.
11.11 Air Pressure Switch - Part no. 533901496
Disconnect the sensing tube from the switch noting the
position. Disconnect the electrical connections noting
their position. Remove the 2 screws securing the switch
to the control panel. The replacement switch is factory
set.
