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22
8
Digital ControlUser InputConfiguration
The adjustable control dip switches are located at the front portion of the digital Smart Center. The inputs are only visible and accessible with the front
cover removed from the PTAC.
Dip Switch Setting
1.
Switch 1-Reserved.
2.
Switch 2-Heat pump enable/disable.
Moving Dip Switch #2 to “OFF” can be set as Emergency Heat
Override. In the unlikely event of a compressor failure, a heat pump
unit may be switched to operate in only the electric heat mode until
repairs can be made.
3.
Switch 3-Electric strip enable/disable.
4.
Switch 4-Heating priority
ON-heat pump to be prior; OFF-Electric heat to be prior
5. Switch 5-Room Freeze Protection
Units are shipped from the factory with the room freeze protection enable.
Room Freeze Protection can be switched off at the owner’s preference by
moving Dip Switch 5 to “OFF”. This feature will monitor the indoor room
conditions and in the event that the room falls below 40℉, the unit will
automatically run “heating”. This occurs regardless of mode.
6.
Switch 6-Electric memory enable/disable
The factory setting is enabled. The smart center will remember
user’s setting. After power cut recovery, the unit will operate the
same status as before power cut. Moving Dip Switch 6 to “OFF”
will disable this feature, smart center will no more remember
settings.
7. Switch 7- Medium fan speed for indoor fan ON-when press the HIGH fan
speed, output the medium speed instead; OFF-output the same speed as
selected.
8. Switch 8-Reserved.
Figure 28
Dip Switches
DIP SWITCH
1 2 3 4 5 6 7
ON
OFF
Reserved
Medium fan speed for indoor fan
Electric memory enable/disable
Room freeze protection
Heating priority
Electric strip enable/disable
Heat pump enable/disable
Reserved
LOCATION OF
DIP SWITCHES
ON UNIT
FRP028
Switch Description Function
Factory Setting
Option
#1 Reserved /
OFF
/
#
2
Heat pump
ON-enable heat pump;
OFF-disable heat pump, run electric heat only.
HP models-ON
Electric heat only-OFF
OFF-Overrides compressor
operation(HP models only)
#
3
Electric strip
ON-enable electric heat; OFF-disable electric heat.
ON
Forbidden moving to OFF
#
4
Reserved
Heating priority
OFF-Electric heating prior
ON-Heat pump prior
#5
Room Freeze
Protection
ON-Allows the unit to ensure the indoor room temperature
does not fall below 40℉ even when turned off.
OFF-disable freeze protection.
ON
OFF
#6
Electric memory
enable/disable
ON-enable;
OFF-disable.
ON
OFF
#
7
Medium fan speed
for indoor fan
ON-When press the HIGH fan speed, output the medium
speed instead; OFF-output the same speed as selected.
7K-ON
9K/12K/15K-OFF
Forbidden changing factory setting
#8
Reserved
/ OFF
/
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