Venus Domestic VDH 100 User Manual - page 26
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8
Error code
18E
1. Compressor discharge temperature
sensor faulty or damaged.
Replace the compressor discharge temperature
sensor.
2. Compressor discharge temperature
sensor connector (plug) disconnected
and/or oxidized due to damp or water.
Reconnect or clean compressor discharge
temperature sensor and wrap it with insulation tape.
3. The controller and/or PC Board faulty
or damaged.
Replace the controller or PC Board.
9
Error code
21E
1. Ambient temperature sensor faulty or
damaged.
Replace the Ambient temperature sensor.
2. Ambient temperature sensor connector
(plug) disconnected and/or oxidized due
to damp or water.
Reconnect or clean Ambient temperature sensor and
wrap it with insulation tape.
3. The controller and/or PC Board faulty
or damaged.
Replace the controller or PC Board.
10
Error code
29E
1. Compressor suction temperature
sensor faulty or damaged.
Replace the Compressor suction temperature sensor.
2. Compressor suction temperature
sensor connector (plug) disconnected
and/or oxidized due to damp or water.
Reconnect or clean Compressor suction temperature
sensor and wrap it with insulation tape.
3. The controller and/or PC Board faulty
or damaged.
Replace the controller or PC Board.
3. Check whether the thermal relay is damaged, if so,
replace.
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The heat
pump is not
heating
1. User's incorrect operation and/or
parameter settings.
a) The pool
temperature setting
is set too low and
the desired
temperature cannot
be reached.
Re-set the pool water
temperature to the correct
range.
b) The difference
between the
required pool
temperature and
the heat pump
restart temperature
(L2) is too big.
Re-set by reducing the value of
L2.
c) Timer function
has been set to a
specific ON and
OFF time, which
does not allow
sufficient time for
the heat pump to
operate.
Re-set the timer.
d) No electrical
power supply to the
heat pump (no
display on the
controller).
1. Check and ensure that circuit
breakers are ON.
2. Test voltage on the PC Board
L/N/G Connectors.
3. If power is not restored,
replace cable.
2. Problem with controller or PC Board.
a) The temperature
displayed is more
than 45˚C.
Check the pool water
temperature sensor, replace if
faulty.
b) PC Board is
damaged due to
burnt relays.
Check and find out the cause,
find faulty relay(s) and replace.
c) PC Board
microcontroller chip
faulty.
Replace the PC Board.
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