Midea Super DC Series, Руководство по обслуживанию

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Electrical Control Function
Electrical Control System 169
T 1 - T d
L
( H + - L ) * 0 .4 + L
( H + - L ) * 0 .6 + L
H +
( H + - L ) * 0 .8 + L
( H + - L ) * 0 .6 + L
( H + - L ) * 0 .2 + L
1.3.3.3 Defrosting Control
：
Conditions for defrosting:
----the unit enters the defrosting mode according to the value of T3 and T4 as well as the compressor
running time.
Defrost Stop Conditions:
If any one of the following conditions is satisfied, defrosting ends and the unit returns to heating mode.
----T3 rises above than TCDE1
℃
.
----T3 remains at TCDE2
℃
or above for 80 seconds.
----The machine runs for 10 consecutive minutes in defrosting mode.
1.3.3.4 High Evaporator Coil Temperature T2 Protection:
T E s to p
T 2
R e s u m e
O ff
D e c r e a s e
T E d o w n
T E n o r m
H o ld
Off: Compressor stops.
Decrease: Decreases the running frequency.
Hold: Maintains the current frequency.
Resume: No limitation is applied to frequency.
.
1.3.4 Auto-mode
You can choose this mode with the remote control and adjust to temperature to between 17 -30.
In auto mode, the machine chooses cooling, heating or fan-
only mode according to ΔT (ΔT =T1-Ts).
ΔT=T1-Ts
Running mode
ΔT
＞
2
℃
Cooling
-2<
ΔT≤2
℃
Fan-only
ΔT≤-2
℃
Heating