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12
10
8
6
4
2
0
-7
-5
2
7
20
Ambient temp(°C)
When ambient temp below 2℃，heat pump and E-heater will
take different portions of heating capacity, generally the lower of
ambient temperature, the lower portion of heat pump will be
taken as well as the higher portion of E-heater will account for.
More detail please refer to Table.4-1.
About TCO and ATCO
The power of compressor and E-heater will be automatically
shut-off or turn on by TCO and ATCO.
If the temperature is higher than 78℃, the ATCO will automati-
cally shut off the power of compressor and E-heater, and turn on
it if the temperature fall down below 68℃.
If the water temperature is higher than 85℃, the TCO will
automatically shut off the power of compressor and E-heater.
After that it needs to be reset manually.
Restart After a Long Term Stop
When the unit is restarted after a long term stop(trail running
included), it is normal that outlet water is unclean. Keep the tap on
and the water will be clean soon.
While the ambient temperature below
than -7℃, heat pump e ciency will
decrease dramatically, the unit will
automatically shift to E-heater running.
4.2.3 Basic function
1)
Weekly disinfect function
Under disinfection unit immediately start to heat water up to 70℃
to kill the potential legionella bacteria inside water of tank,
icon will be lightened on the display screen during disinfection;
Unit will quit disinfection if water temperature is higher than 70℃
and extinguish
icon.
2)
Vacation function:
Press the
button to select VACATION , Unit will automati-
cally heat water to 15℃ for the purpose of energy saving during
vacation days.
Rmote shutdown function:
3)
Users can connect a switch.If the switch is closed, the unit will be
stopped forcibly.If switch breaks, the unit can run normally
according settings.
How is the unit running:
4)
If unit is OFF->press
to set target water temperature(38-70℃)->press
will automatically select heat source and start to heat water to
target temperature.
25
30
32
35
40
45
NOTE
->unit will be waken->press
4.2.4 Query function
For the convenience of maintenance and debug, query function is
available by Press 3 buttons together:
then system running parameters will be shown one by one with
following sequence by each pushing of
15-45
15-55
15-65
15-70
Hour
No.
low bit
1
Fig.4-4
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
->unit
11
Min.
Min.
unit
high bit
Low bit
Temp.
Temp.
Temp.
Temp.
Temp.
Temp.
Temp.
Temp.
Current
Current
Fan
Electronic
expansion
valve
Warm
water valve
Frequency
Version
Version
+
+
,
or
button.
Table.4-2
Explenation
T5U
T5L
T1
T7
T3
T4
TP
Th
Current value
Electric heating
current value
0：OFF
1：Low fan
2/3:High fan
Electronic
expansion
valve 1/8
Warm water
valve1/32
Compressor
frequency
Host software version
Display board
software version
Last error code
Previous 1st error or
protection code
Previous 2nd t error or
protection code
Model code:
01 Europe 190
02Europe 300
03 Australia 190
04 Australia 300
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