Koldfront WAC10002WCO, Service Manual

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19
6 Modes and Operating Conditions
6.1 Terms and Definitions

TA: Temperature of indoor ambient.

TE: Temperature of evaporator.

TS: The set temperature.

DAHT: Heater sensor.
6.2 Protection Functions

The compressor restart protection has a delay of 3 minutes.

Sensor protection against an open or short circuit.
6.3 Auto Mode

AUTO Mode is a setting that allows the unit to automatically switch between COOL and FAN in order
to achieve and maintain the desired set temperature.

In Auto mode the unit will choose cooling or fan-
only mode based on ΔT(ΔT=TA-TS)
ΔT = TA - TS
Running mode
ΔT
＞
4

F
Cooling
-2

F ≤ ΔT ≤ 4

F
Fan-only

The unit will default to running mode when in auto mode under the following circumstances:

Powering on, changing mode to auto mode or adjusting temperature in auto mode will cause the
unit to default to running mode again.

A: In auto mode, if the compressor does not run for 15 minutes check condition B.
 B: If ΔT<-8
℉
or ΔT
＞
2
℉
, the unit will default to running mode again according to ΔT until the
compressor stops.