160 Outdoor Unit
Operation detail
■ Control of Outdoor Unit Fan
(1) Outdoor unit fan is controlled by motor which can be rotated high/low speed
(2) Steps of outdoor unit fan speed : 4 Steps
(3) Determination of fan speed(Step_Fan)
■ Control of Reversing Valve
1. Initial state: keep up OFF state
2. Cooling and Deicing operation: OFF
Heating operation : ON
3. Change operation mode(Cooling and Heating): 3minutes restarting, reversing valve ON.
4. Compressor stop because of Thermo-OFF: keep up the present state.
■ Hot Gas Bypass Valve
(1) General control
1. At initial start of compressor: Turn on for 1 min.
2. After compressor OFF: Turn on for 10 minutes
(This operation is resulted in equilibrium of pressure)
■ Deicing Operation
(1) The start condition of deicing operation
1. 10 minutes passed, since compressor starts
2. One of the two temperature of heat exchanger pipe in outdoor unit is continuously under the temper-
ature of start condition of deicing operation for 20 seconds or more.
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