Operation
Electrical shock hazard.
Turn OFF electric power supply at disconnect
switch or service panel before removing any ac-
cess or service panel from unit.
Failure to follow this warning can result in prop-
erty damage, personal injury, and/or death.
Features
Scroll Anti-Cycle Timer
All single phase heat pumps with scroll compressors are
equipped with a defrost control board which features an in-
ternal anti-short cycle timer that delays the start of the
compressor in the event of a power interruption. This fea-
ture isto allow pressure equalization throughout the system
and prevent possible reverse rotation of the scroll compres-
sor.
Loss of Charge Pressure Switch
A low pressure switch on the liquid line (high side) has been
installed to prevent system damage due to a loss of charge.
The switch will open and de-energize the contactor if the
high side pressure drops below the set point of the switch.
Defrost Control Time Interval Adjustment
Electrical shock hazard.
Turn OFF electric power supply at disconnect
switch or service panel before removing any ac-
cess or service panel from unit.
Failure to follow this warning can result in prop-
erty damage, personal injury, and/or death.
To adjust defrost interval:
1. Turn off all power to Heat Pump.
2. Remove control box cover.
3. Locate electronic control board.
4. The Control Board has a jumper that allows you to
change the defrost time interval. (See Figure Below)
Change the desired time by removing the jumper and
placing the jumper on 30, 60, or 90.
30 = 30 minutes, 60 = 60minutes, 90 = 90 minutes.
FIGURE Defrost Control
Control
Board
Jumper placed
here for defrost
/ check
Defrost
Settings
_0 • _
lS31
Cooling
Adjust thermostat setting to desired temperature and set
thermostat Heat-Cool switch to COOL. The unit will come
on and operate automatically under control of the thermo-
stat. Close all doors and windows. The unit may run
continuously for several hours or longer on the initial run be-
cause of residual heat and moisture in the house. This is
normal for any air conditioning system.
CAUTION
Do NOT operate unit on cooling when the outdoor tem-
perature is below 40°F (4.4°C). This is necessary to
prevent possible damage to the compressor.
Turning The Unit Off
1,
Set the thermostat selector switch to OFF and set the
fan switch to AUTO. To restart, set thermostat selec-
tor switch to COOL and set thermostat to temperature
desired.
2. To shut the unit down completely, turn electric power
OFF.
1L_ 516 01110200
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