Service manual

MICROPROCESSOR CONTROL
22
9
9-1. “I FEEL CONTROL” ( ) OPERATION
9-1-1. COOL mode of “I FEEL CONTROL”
2. Discharge temperature protection <MU-A30WV>
The compressor is controlled by the temperature of discharge temperature thermistor RT62 for excess rise protection of
compressor discharge pressure.
• Compressor
When the temperature of discharge temperature thermistor RT62 goes to 120: or more, the compressor is turned OFF.
After 3 minutes since the compressor has been turned OFF, if the temperature of discharge temperature thermistor RT62
becomes 100: or less, the compressor is turned ON.
9-1-2. DRY mode of “I FEEL CONTROL”
1. Outdoor fan speed control <MU-A30WV>
Outdoor fan speed control is as same as one of COOL mode of “I FEEL CONTROL”.
1. Outdoor fan speed control <MU-A30WV>
Outdoor fan speed is controlled according to the temperature of ambient temperature thermistor RT63.
Outdoor fan Low operation : When the outside temperature decreases to 20°C or less.
Until the outside temperature goes to 22°C.
Outdoor fan High operation : Until the outside temperature decreases to 20°C or less.
When the outside temperature goes to 22°C.
Outdoor fan speed
20: 22:
High
Ambient temperature
thermistor RT63 temperature
Low
NOTE : When indoor fan speed is Low except FAN operation mode and the outside temperature is 30: or less, the
outdoor fan operates at Low.
Outdoor fan Low operation is cancelled according to the following conditions(1 or 2):
1 When the operation is not changed and the outside temperature goes to 33: or more.
2 When the operation is changed. (Change to FAN operation mode / Change of the indoor fan speed)
MU-A30WV -
E1
OB326A-1.qxp 04.2.9 10:41 AM Page 22