54
(5) Operation data during emergency operation
During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation
are set to the following values:
Operation data
Intake temperature (TH1)
Indoor pipe temperature (TH2)
Indoor 2-phase pipe temperature (TH5)
Set temperature
Outdoor pipe temperature (TH3)
Outdoor 2-phase pipe temperature (TH6)
Outdoor ambient temperature (TH7)
Pressure sensor saturated temperature (63HS)
Temperature difference code
(room temperature - set temperature) (∆Tj)
Operation mode
COOL
27
5
5
25
45
50
35
50
5
HEAT
20.5
45
50
22
5
5
7
50
5
(*1)
(*1)
(*1)
(*1)
Remarks
*1 If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data.
When the unit enters emergency operation and TH values are mismatched, set the thermistors to open/short.
And the unit runs emergency operation with the values listed above.
—
—
—
—
—
OCH544
