Energy Management Input (Front Desk Control); Intelligent Self-Checking Control - Trane ProSpace PTEF Installation, Operation And Maintenance Manual

Energy Management Input (Front Desk Control)

The controller can handle a switch signal from remote energy management input, called an EM
signal or front desk control. The input must be 24 Vac. When the system receives a 24 Vac signal,
it turns OFF the unit; otherwise it is in normal control. This function is disabled under Freeze
Guard protection.

Intelligent Self-Checking Control

The. PTAC has an on-board computer continuously checks key components of the unit to ensure
they are operating properly. Under normal operation, the unit status indicator (STATUS, on main
PCB), light is steadily ON. If there is a major problem, the unit shuts down and displays a
diagnostic failure code on the control. If it is a minor error and the unit can correct it by itself, the
diagnostic code is flashed on the status LED that is easily seen when the front panel is removed.
Refer to the following table of diagnostic codes.
Table 5. Diagnostic Codes
Diagnostic
Code
1
2
3
4
5
6
7
8
9
(a)
PTAC-SVX002A-EN
Code
Description
Indoor air temp
sensor open or
short.
Indoor coil
sensor open or
short.
Outdoor coil
sensor open or
short.
Freeze guard
protection.
Indoor coil
freeze
protection.
Outdoor coil
high temp
protection.
Defrost (heat
pump type).
Indoor coil high
temp
protection.
Thermostat
wiring error.
When the status light is flashing, it is ON 1 second and then OFF 1 second.
Explanation
An 8-segment display Fl, STATUS light flashes once an then OFF 3 seconds,
repeat. (a)
An 8-segment display F2, STATUS light flashes 2 times and then OFF 3 seconds,
repeat.
An 8-segment display F4, STATUS light flashes 3 times and then OFF 3 seconds,
repeat.
An 8-segment display FP.
The STATUS light flashes 5 times and then OFF 3 seconds, repeat.
The STATUS light flashes 6 times and then OFF 3 seconds, repeat.
The STATUS light flashes 7 times and then OFF 3 seconds, repeat.
The STATUS light flashes 8 times and then OFF 3 seconds, repeat.
The STATUS light flashes 9 times and then OFF 3 seconds, repeat.
A A u u x x i i l l l l a a r r y y C C o o n n t t r r o o l l s s
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