Maintenance - Dimplex ECS150HP40A-580 Installation And User Instructions Manual

Figure 15: Adjustment Water Temperature Direct
Electric Heating Element
10.5 Troubleshooting
Fault
A No water from
hot water taps
B No hot water
C Intermittent
water
discharge
through
tundish on
warm-up
D Continuous
discharge
E Leakage from
casing
F Hot water from
cold tap
G Metallic noise
from system
H Humming noise
from system
during re-heat
Dial to adjust
water temperature
Earth (green/yellow)
Live (brown)
Neutral (blue)
Cause
A.1 Stop valve closed
A.2 Strainer blocked
A.3 Pressure reducing valve
fitted against flow
B.1 Timer/Programmer not set
correctly
B.2 Auxiliary heating
malfunction
B.3 Direct heating malfunction
B.4 Auxiliary/direct heating
high limit thermostat has
tripped
C.1 Expansion vessel lost
charge
D.1 Pressure reducing valve not
working
D.2 Pressure relief or T&P valve
not seating correctly
D.3 Malfunction of high limit
thermostat or appliance
E.1Compression/threaded
joints not formed correctly
F.1 Hot pipe work being routed
adjacent to cold pipe work
F.2 Leaking seal in mixer tap
G.1 Pipe work not sufficiently
supported
H.1 Air in system
H.2 Flow rate well in excess of
specification
Table 6: Troubleshooting Guide
Troubleshooting

10.4 Maintenance

The maintenance of this appliance
must be carried out by a suitably
qualified person
recommended to maintain the unit on
an annual basis. Isolate all electrical
supplies from
commencing
electrical shock! See Section 7.
Solution
A.1 Open stop valve
A.2 Turn water supply off,
clean strainer and re-
commission
A.3 Re-fit with arrow showing
in direction of flow
B.1 Set timer/programmer
correctly
B.2 Consult auxiliary heating
system instructions
B.3 Call for qualified person to
check immersion heater
B.4 Reset limit thermostat(s)
and inform installer
C.1 Check expansion
(see commissioning
maintenance, top up or
replace
D.1 Check pressure after
valve and replace if faulty
D.2 Manually lift valve once or
twice to clear debris,
otherwise replace
D.3 Check function of
thermostats and
appliances
E.1 Re-seal joints with care
F.1 Insulate hot pipe work or
re-route
F.2 Replace seals in mixer tap
G.1 Add extra pipe work
fixings
H.1 Bleed system thoroughly
and re-pressurize
H.2 Reduce pump speed
only. It
the unit before
work. Danger
vessel
/
is
of