Panasonic U-100PEY1E5, Technical Data & Service Manual, Page: 579 / 739

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4
4) Condensation Temperature Control (cooling)
This system control is performed to limit the inverter frequency in order to restrict high pressure’s abnormal increase
and high-load operating prevention in the cooling mode.
In accordance with the temperature of the outdoor heat exchanger temperature sensors (C1, C2), such controls are
performed as to halting the operations of the indoor unit, decreasing the inverter frequency and restricting its increase,
etc.
(a) The threshold value is decreased in accordance with the compressor frequency or indoor load (differences of
temperature).
(b) When "X" values are lowered, the results basically become β=X-2, α=X-3.
(a) The threshold value is decreased in accordance with the compressor frequency or indoor load (differences of
temperature).
(b) When "X" values are lowered, the results basically become β=X-2, α=X-3.
max. (C2, C1)
Outdoor unit operations halted
Frequency decreased
Frequency increases prevented
Frequency increased slower than normal
β: 54
α: 52
X
Setting No.
EEPROM setting in outdoor unit
Outdoor EEPROM : Amendment of X values can be
made due to 4B.
Outdoor EEPROM : Amendment of X values can be
made due to 4B.
CODE: 4B
X (
°C)
-2
52
-1
56.5
0
58.5
1
PE type : Setting at factory shipment
*1
*1
PEY type : Setting at factory shipment *2
PE type : Setting at factory shipment *1
PEY type : Setting at factory shipment *2
*2
60
°C
max. (E2, E1)
Outdoor unit operations halted
Frequency decreased
Frequency increases prevented
Frequency increased slower than normal
β: 50
α: 48
X
Setting No.
EEPROM setting in outdoor unit
CODE: 4B
X (
°C)
-2
52
-1
56.5
0
58.5
1
*1 *2
60
°C
5) Condensation Temperature Control (heating)
This system control is performed to limit the inverter frequency in order to restrict high pressure’s abnormal increase
and high-load operating prevention in the heating mode.
In accordance with the temperature of the indoor heat exchanger temperatures sensor (E1, E2), such controls are
performed as to halting the operations of the indoor unit, decreasing the inverter frequency and restricting its increase,
etc.
SM830211-07̲PAC-i.indb 19 SM830211-07̲PAC-i.indb 19 2013/08/06 21:55:42 2013/08/06 21:55:42