Electrical Control Function
Electrical Control System
102
T1-Td
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:
TEstop
T2
Resume
Off
Decrease
TEdown
TEnorm
Hold
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
Summary of Contents for 38QUS012D8S
Page 1: ...Contents i Energy Related Products SUPER DC INVERTER SERIES Service Manual...
Page 13: ...Service Space Indoor Units 11 3 Service Space 1000mm 1000mm 1000mm 1000m m Chart 3...
Page 16: ...Air Velocity Distributions Reference Data Indoor Units 14 30 42K Cooling Heating...
Page 17: ...Air Velocity Distributions Reference Data Indoor Units 15 48 55K Cooling Heating...
Page 22: ...Field Wiring Indoor Units 20 10 Field Wiring 42QTD018R8S 42QTD024R8S 42QTD036R8S...
Page 23: ...Field Wiring Indoor Units 21 42QTD048R8S 42QTD060R8S...
Page 29: ...Features Indoor Units 27...
Page 46: ...Service Space Indoor Units 44 3 Service Space...
Page 61: ...Wiring Diagrams Outdoor Units 59 3 Wiring Diagrams 38QUS018R8S...
Page 62: ...Wiring Diagrams Outdoor Units 60 38QUS024R8S...
Page 63: ...Wiring Diagrams Outdoor Units 61 38QUS036R8S...
Page 64: ...Wiring Diagrams Outdoor Units 62 38QUS036R8T...
Page 65: ...Wiring Diagrams Outdoor Units 63 38QUS048R8T 38QUS060R8T...
Page 87: ...Refrigerant pipe installation Installation 85...