Modes And Operating Conditions; Cooling Mode; Dry Mode; Heating Mode (Ap13500Hg Only) - EdgeStar AP13500G Service Manual

6 Modes and Operating Conditions

6.1 Cooling mode

When Tambient ≥ Tpreset +1ºC(2ºF) the unit operates in cooling mode. The compressor runs and the
indoor fan operates at the set fan speed. If the indoor fan operates at high or medium speed, the outdoor
fan operates at high speed. If the indoor fan operates at low fan speed, the outdoor fan operates at low
speed.
When Tambient ≤ Tpreset -1ºC(2ºF) the compressor and outdoor fan stop, while the indoor fan operates
at the set fan speed.
When Tpreset-1ºC(2ºF) < Tambient < Tpreset+1ºC(2ºF) the unit stays in the original operation mode.
Under cooling mode the 4-way valve is de-energized. The temperature can be set between 61 and 86ºF
(16-30ºC).

6.2 Dry mode

Under this mode the set temperature and ambient temperature won't be displayed. The indoor fan
operates at low fan speed. The compressor and outdoor fan operate continuously.

6.3 Heating mode (AP13500HG only)

When Tambient ≤ Tpreset+3ºC(6ºF) the unit operates in heating mode. The 4-way valve energizes, the
compressor runs, and the indoor fan operates at the set fan speed. If the indoor fan operates at high or
medium speed, the outdoor fan operates at high speed. If the indoor fan operates at low speed, the
outdoor fan operates at low fan speed.
When Tpreset+3ºC(6ºF) < Tambient < Tpreset+5ºC(10ºF) the unit stays in the original operation mode.
When Tambient ≥ Tpreset+5ºC(10ºF) the compressor and outdoor fan stop. The 4-way valve will de-
energize after the compressor has stopped for 2 minutes. The indoor fan operates to disperse any
residual heat.
In heating mode the temperature can be set between 61 and 86ºF (16-30ºC).

6.4 Fan mode

In this mode the set temperature and ambient temperature won't be displayed. The indoor fan operates at
the set fan speed.

6.5 Auto mode

Under auto mode standard cooling Tpreset=77ºF(25ºC); standard heating Tpreset=68ºF(20ºC)

6.5.1 AP13500G

When Tambient > 79ºF(26ºC) the unit runs in cooling mode. When Tambient < 68ºF(20ºC) the unit runs
in fan mode.
If the unit is operating in fan mode and 68ºF(20ºC) ≥ Tambient ≥ 73ºF(23ºC), the unit will stay in fan
mode. If the is not running in fan mode it will change to dry mode.
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