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2) Temperature difference (∆Tcon) choice.
After power on, the machine will self-diagnose, and if there are no J1 and J2 jump wires, ∆Tcon will be set
as 0ºC.
∆Tcon(ºC)
9.7.7
Outdoor unit current control in heating mode.
Remark:
9K Model
12K Model
9.7.8
Indoor heat exchanger high temperature protection.
If T2＞60ºC, the compressor will stop and not resume until T2＜48ºC.
9.7.9
Defrosting mode.
1)
Condition of defrosting.
Condition 1: If T4＞0ºC,
When the units are running, if the following two items are satisfied the units start defrosting:
a)
b)
Condition 2: If T4＜0ºC,
The program judges according to the condition 1, if the two items are satisfied, then judges if T2 has
descended for more than 5ºC, if it has the machine starts defrosting, or continues to judge T2 and will
not defrost until T2 drops more than 5ºC.
Condition 3: No matter what value T4 is, if the machine runs with T3＜3ºC for more than 120 minutes and T3
keeps lower than -2ºC for more than 3 minutes, the machine will defrost, no matter if T2 drops for more than 5ºC
or not.
2)
Condition of ending defrosting.
If any one of following items is satisfied, defrosting will finish and the machine will turn to normal heating
mode.
a)
T3 rises to be higher than 12ºC.
b)
T3 rises to be higher than 8ºC and remains for 80 seconds.
c)
The machine has run for 10 minutes in defrosting.
J1
on
J2
on
0
I3HEAT
I2HEAT
I1HEAT
I1HEAT
5.2 A
5.2 A
The units runs with T3＜3ºC for 40 minutes and T3 keeps lower than -6ºC for more than 3
minutes.
The units runs with T3＜3ºC for 80 minutes and T3 keeps lower than -4ºC for more than 3
minutes.
on
off
off
on
-4
-2
comp. pause
freq. descends if curr. rises;
freq. remains if curr. descends
running normally
I2 HEAT
6.4 A
6.4 A
off
off
0
I3 HEAT
7.5 A
7.5 A
25
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