Troubleshooting - Dimplex Ec-eau Installation And User Instructions Manual

10.4 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
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 mal function
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.1 Compression/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
Troubleshooting
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 vessel
(see
commissioning/maintena
nce), 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