Compressor Time Delay. Oliver Travel Trailers Legacy Elite I, Legacy Elite II

DOMETIC THERMOSTAT

SPECIAL FEATURES

C. Compressor Time Delay

A time delay of approximately 2 minutes occurs anytime compressor is required to begin cooling or heat pump cycle.

D. Defrost Cycle

During heat pump operation, if outside coil begins to freeze up, a defrost cycle is initiated that temporarily puts heat pump back into air conditioning mode. This reverses the refrigerant flow and melts ice forming on outside coil. Typically this occurs when outside temperatures are below

42ºF and repeats every 25 minutes of compressor run time. During this cycle the unit will cease to provide hot air flow temporarily. This is normal and is NOT and indication of malfunction.

Defrost cycling SHALL continue until measured temperature of Outside Sensor is < 30ºF or > 42ºF.

E. Low Ambient Heat Pump Lock Out

All heat pumps are constrained to operation at a temperature range determined by outside conditions. Since all heat pumps lose efficiency at low outside ambient temperatures, the heat pump has a lock out feature that prevents heat pump mode of operation when temperatures fall below

30ºF. If system is set in Auto Mode fan will be turned OFF. Fan will remain ON if fan setting is set to Low or High, however compressor will not run and there will be no heat function below 30ºF.

F. Power Interruption

In the event power to air conditioner or control is interrupted, system will restart with previous setpoints once power is restored.

G. LCD Error Code

When system determines one of the faults listed has occurred, an error code will be displayed on LCD.

Error Code:

E1 Loss of communication between CT thermostat and module board. LCD will cycle between E1 and previous mode setting. System will shut down.

E2 Open circuit or out of range Indoor Temperature Sensor. Heating and cooling operation will be locked out. Fan operation can continue to operate.

E3

E4

E5

Shorted Indoor Temperature Sensor. Heating and cooling operation will be locked out.

Fan operation can continue to operate.

Open circuit or out of range Outdoor Temperature Sensor (select models). Heat Pump operation will be locked out. Air Conditioner, Fan, and Furnace operation can continue to operate.

Open Circuit or out of range Freeze Sensor. Air Conditioner mode of operation will be locked out, but displays the last temperature set-point.

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