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6.2
Other
Malfunctions
and
Solutions
(No
display
on
LED
wire
controller)
Malfunctions
Observing
Reason
Solution
Heat
pump
is
not
running
LED
wire
controller
no
display.
No
power
supply.
Check
cable
and
circuit
breaker
if
it
is
connected.
LED
wire
controller
displays
the
actual
water
temperature.
1.
Water
temperature
is
reaching
to
setting
value,
HP
under
constant
temperature
status.
2.
Heat
pump
just
starts
to
run.
1.
Verify
water
temperature
setting.
2.
Start
up
heat
pump
after
a
few
minutes.
Short
running
LED
displays
actual
water
temperature,
no
error
code
displays.
1.
Fan
NO
running.
2.
Air
ventilation
is
not
enough.
1.
Check
the
cable
connections
between
the
motor
and
fan,
if
necessary,
it
should
be
replaced.
2.
Check
the
location
of
heat
pump
unit
and
eliminate
all
obstacles
to
make
good
air
ventilation.
Water
stains
Water
stains
on
heat
pump
unit.
1.
Concreting.
2.
Water
leakage.
1.
No
action.
2.
Check
the
titanium
heat
exchanger
carefully
if
it
is
any
defect.
