FAQs for the Dometic CT Bluetooth app
Frequently asked questions about the CT Bluetooth app.
First, verify that the thermostat is equipped with Bluetooth® capability. A small Bluetooth® symbol, as follows, should be visible on the front of the thermostat just below the display screen:
If the thermostat is equipped with Bluetooth® capability then verify that the CT Bluetooth thermostat is powered up and properly paired to the Bluetooth® device.
When the system determines that one of the faults listed below has occurred an error code will be displayed in the LCD.
Error Codes
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 Shorted Indoor Temperature Sensor. Heating and cooling operation will be locked out. Fan operation can continue to operate.
E4 Open circuit or out of range Outdoor Temperature Sensor (select models). Heat pump operation will be locked out. Air Conditioner, Fan, and Furnace mode of operation can continue to operate.
E5 Open circuit or out of range Freeze Sensor. Air conditioner mode of operation will be locked out, but displays the last temperature set-point.