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Unit Features
This unit has many features that are different from those found on standard PTAC models. The
owner should become familiar with these features in order to fully understand the operation and
capabilities of the unit:
Intelligence
The unit has an on board computer which utilizes real-time diagnostics to prolong the life of the
unit. There is an LED indicator on the control board, behind the front panel, that flashes an error
code if the unit detects a faulty condition. In many situations, the unit automatically clears the
fault condition and continues operating with no interruption. However, In some cases, the
condition cannot be cleared and the unit will require servicing. In those situations, an F F x x failure
mode displays on the digital display.
N N o o t t e e : : Refer to the diagnostic codes in the
Memory
In the event there is a power lost, all of the control settings (Setpoint, Mode, Fan Speed, ON/OFF
and Configuration) are retained in memory. After power is restored, the unit starts back up in the
previous mode (and configuration) prior to a power loss.
Quiet Design
The ProSpace has two (2) fan motors and a tangential blower wheel for optimum quietness. The
indoor fan always runs, at a minimum of 10 seconds, before the compressor in order to reduce
the sound of the compressor starting.
Random Compressor Restart
The compressor is equipped with a 2–minute, 45 second to 3–minute 15 second random restart
delay feature. This helps to prevent power surges after a power outage (for example, when many
PTACs start at the same time). Whenever the unit is plugged in, or when power has been
restarted, a random compressor restart occurs to help avoid power surges.
Compressor Protection
The ProSpace has a random start-up delay of three (3) minutes on the compressor, with a
minimum compressor run time of three (3) minutes, to prevent short cycling of the compressor
and to maximize its life.
Automatic Room Freeze Protection
This protection feature automatically ensures the indoor temperature does not fall below
freezing. When the PTAC is configured for freeze protection (the default condition), the power is
supplied to the unit, and if the unit senses a temperature below 40°F , the fan motor and electric
heater turn ON and warms the room to 50°F (10°C). The unit can be configured to have freeze
protection turned OFF .
Automatic Quick Warm-Up (Heat Pump Models Only)
If the room temperature falls to 5°F (-15°C) below the setpoint temperature, the reverse cycle heat
is shut OFF and the electric strip heat is turned ON for one (1) cycle, until room temperature rises.
8
section,"Intelligent Self-Checking Control, " p.
23.
PTAC-SVX002A-EN
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