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Maintenance & Service
Information
Filter:
Twist to the left and remove. See “AQ35
Filter Replacement” section above.
Descaling:
The boiler should be periodically checked for
scale build-up…see below:
In hard water areas, the boiler should be
descaled on a regular basis to maintain efficient
operation, minimise energy consumption, and
also retain the water quality. The frequency
depends on the hardness of the local mains
water supply and the regular replacement of
the AQ35 filter cartridge.
To de-scale:
• Disconnect machine from power supply
• Empty the machine through the draw-off
tap and allow to cool
• Lift off the outer-lid.
• Remove tank-lid (four fixing screws).
• Lift out the evaporation plates (inside of
tank – Remember order of removal).
• Remove as much scale as possible by hand.
Any scale which is difficult to remove can be
dissolved by using a de-scaling solution.
• Wipe clean the level sensing probes.
• Flush with copious amounts of cold water to
ensure all traces of de-scaler are removed
before using the boiler again.
• Replace evaporation plates, tank-lid and
outer lid.
Draw-off tap:
The draw-off tap components are subject to
wear & tear. We strongly recommend that the
tap is inspected periodically (at least once a
year as part of a general maintenance routine).
It is advisable to keep a spare tap assembly in
case of emergencies.
Accessories & Spares (Tel: 01704 502905)
Tap Washer - TP1001/L
Tap Spring - TP1007/N
Tap Bonnet - HSTP100
Upper Tap Assembly - XTP1050/A
A full range of spares and accessories are
available from our spares department.
Service Warnings And Fault
Diagnosis
Your boiler is fitted with an intelligent fault diagnosing
system and is able to detect various fault conditions.
Some of these are less serious and the machine will
continue to operate as normal, while others are more
serious and will disable the unit.
Before calling for service, switch the machine off
at the mains supply. Draw-off a small amount of
water and then switch back on after 10 minutes.
If the fault does not clear, call technical support
for advice.
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