(1) Initialization
When the power is turned ON.
When the power is OFF after the certain period.
05-07
5-4 ELECTRONIC EXPANSION VALVE CONTROL
(2) Operation Control
When indoor unit stopping
Outdoor unit Condition
EEV Condition
Cooling
Heating
Fully closed
Slightly open
When starting up
(Cooling) Move to the cooling control base pulse.
(Heating) Move to the heating control base pulse in steps.
Automatic operatin control
Automatic PI control is performed based on the indoor unit heat exchanger mid temp and inlet temp.
Room temperature control
The refrigerant flow is controlled in the increments of 0.5 C, so that the indoor temperature is smoothly
controlled based on the difference between the indoor temperature and the setting temperature, and the
indoor temperature curve.
OFF
Fully closed
5-5 DRAIN PUMP OPERATION
(1) When cooling and refrigerant circulation starts, the drain pump starts simultaneously.
(2) The drain pump operates continuously for 3 minutes after the refrigerant circulation stopped.
(3) When the refrigent circulation is stopped by a start of indoor heat exchanger frost provention
operation, the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost
provention operation.
(4) When the water level in the drain pan rises up and then the float switch functions:
Microcomputer stops the refrigerant circulation and indoor fan motor operation.
Drain pump operates continuously for 3 minutes after the float switch is turned off.
(Almost condensing water may be drained)
(5) When the float switch turns ON continuously for 3 minutes, 'FAILURE INDICATION' operates.
(6) When the float switch turns OFF within 3 minutes, the unit starts cooling operation.
1
2
(3) Special Control
Defrosting (at the oil recovery operation)
The similar pulse value of the cooling control pulse.
At Pump-down
Fully open
Summary of Contents for AO54FJ
Page 5: ...1 TEST RUN TM SERIES R410A ...
Page 14: ...2 FUNCTION OF PRINTED CIRCUIT BOARD TM SERIES R410A ...
Page 39: ...3 INVERTER CONTROL TM SERIES R410A ...
Page 45: ...4 OUTDOOR UNIT OPERATION CONTROL TM SERIES R410A ...
Page 54: ...5 INDOOR UNIT OPERATION TM SERIES R410A ...
Page 70: ...6 TROUBLE SHOOTING TM SERIES R410A ...
Page 128: ...7 INSTALLATION TM SERIES R410A ...
Page 140: ...8 REFRIGERANT CAUTION R410A TM SERIES R410A ...
Page 149: ...9 APPENDING DATA1 UNIT TM SERIES R410A ...
Page 156: ...LOW STATIC PRESSURE DUCT TYPE MODELS AR25 AR30 ARXB25 ARXB30 09 07 ...
Page 157: ...MODELS AR36 AR45 09 08 ...
Page 158: ...COMPACT CASSETTE TYPE MODELS AU7 AU9 AU12 AU14 AU18 09 09 ...
Page 159: ...CASSETTE TYPE MODELS AU20 AU25 AU30 09 10 ...
Page 160: ...MODELS AU36 AU45 AU54 09 11 ...
Page 161: ...COMPACT WALL MOUNTED TYPE MODELS AS7 AS9 AS12 AS14 09 12 ...
Page 162: ...WALL MOUNTED TYPE MODELS AS18 AS24 AS30 09 13 ...
Page 163: ...HEAT PUMP TYPE MODEL AO54UJ 9 3 2 OUTDOOR UNIT 09 14 ...