Armstrong Air Conditioning 4HP14 Istruzioni per l'installazione e l'avvio - Pagina 10
Sfoglia online o scarica il pdf Istruzioni per l'installazione e l'avvio per Pompa di calore Armstrong Air Conditioning 4HP14. Armstrong Air Conditioning 4HP14 17. Split system
Stampa la paginaAmbient Sensor—The ambient sensor considers outdoor
temperatures below -35°F (-37°C) or above 120°F (48°C)
as a fault. If the ambient sensor is detected as being open,
shorted or out of the temperature range of the sensor, the
board will not perform demand defrost operation. The board
will revert to time/temperature defrost operation and will
display the appropriate fault code. Heating and cooling
operation will be allowed in this fault condition.
NOTE - Within a single room thermostat demand, if 5-
strikes occur, the board will lockout the unit. Defrost
board 24 volt power "R" must be cycled "OFF" or the
"TEST" pins on board must be shorted between 1 to 2
seconds to reset the board.
Page 10 of 17
Defrost Temperature Termination Shunt (Jumper)
Pins—The defrost board selections are: 50, 70, 90, and
100°F (10, 21, 32 and 38°C). The shunt termination pin is
factory set at 50°F (10°C). If the temperature shunt is not
installed, the default termination temperature is 90°F (32°C).
DELAY MODE
The defrost board has a field-selectable function to reduce
occasional sounds that may occur while the unit is cycling
in and out of the defrost mode. When a jumper is installed
on the DELAY pins, the compressor will be cycled off for 30
seconds going in and out of the defrost mode. Units are
shipped with jumper installed on DELAY pins.
NOTE - The 30 second off cycle is NOT functional when
jumpering the TEST pins.
Issue 0946
506318-01