Specifications

67
7-4. HEAT operation
Control modes
Control details
1-1. Thermoregulating function (Function to prevent restarting for
3 minutes)
•Room temp. [ desired temp.-1: ···Compressor ON
•Room temp. ] desired temp. ···Compressor OFF
1-2. Over- rise protection control
Detected control : When Condenser/ Evaporator temp.
turns 74: or more, less than 90: after starting
compressor, stop the compressor, then the mode changes to
restarting compressor, stop the compressor, then the mode
changes to restarting protection mode after 6 minutes.
After restarting after 6 minutes when the Condenser/
Evaporator temp. became 74: or more, less than 90: by
the time 10 minutes pass, the mode changes to over-rise
protection control.
Release control : When the operation stops by the remote
controller.
1. Compressor
Remarks
✻1
The thermoregulating function is
provided in the outdoor unit.
The indoor unit transmits the indoor
room temp. and set temp. data to
outdoor unit, then the outdoor unit
controls thermoregulation.
2-1. Thermoregulating function
When the mode is not Hot adjust or Defrosting mode during
HEAT compressor operation, the controller changes to
auxiliary heater ON.
Thermoregulating function follows the below table with
according to desired temp. and room temp.
2.
Auxiliary heater
Temp. difference
Keeping condition
Auxiliary heater
z < 0
0 [ z < 3
OFF
3 [ z
ON
✻2 During the over-rise prevention
control, "Airflow increasing" in the
indoor fan is controlled.
( Only the model of fan 4-speed)
✻1 Models without auxiliary heater also
control the units in the same way as
shown in the left.
Temp. difference Z=Desired temp. - Room temp.
2-2. Over-rise prevention control
During the HEAT compressor operation, when the Condenser/
Evaporator temp. became 60: or more, over-rise prevention
control operates and the auxiliary heater prohibits for ON
operation. When the indoor Cond./Eva. temp. is 55: or less
during over-rise prevention, over-rise prevention control will
be released and auxiliary heater ON will be allowed.
OCT03-E-3.qxp 04.3.26 1:50 PM Page 67