Trane ProSpace PTEF, Инструкция по установке, эксплуатации и обслуживанию

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PTAC-SVX002A-EN 23
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 Code
Description Explanation
1 Indoor air temp
sensor open or
short. An 8-segment display Fl, STATUS light flashes once an then OFF 3 seconds,
repeat.
(a)
2 Indoor coil
sensor open or
short. An 8-segment display F2, STATUS light flashes 2 times and then OFF 3 seconds,
repeat.
3 Outdoor coil
sensor open or
short. An 8-segment display F4, STATUS light flashes 3 times and then OFF 3 seconds,
repeat.
4 Freeze guard
protection.
An 8-segment display FP.
5 Indoor coil
freeze
protection. The STATUS light flashes 5 times and then OFF 3 seconds, repeat.
6 Outdoor coil
high temp
protection. The STATUS light flashes 6 times and then OFF 3 seconds, repeat.
7 Defrost (heat
pump type). The STATUS light flashes 7 times and then OFF 3 seconds, repeat.
8 Indoor coil high
temp
protection. The STATUS light flashes 8 times and then OFF 3 seconds, repeat.
9 Thermostat
wiring error. The STATUS light flashes 9 times and then OFF 3 seconds, repeat.
(a) When the status light is flashing, it is ON 1 second and then OFF 1 second.
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