Led Indicators; Delayed Start - Danfoss RET1000 MD User Manual

LED Indicators

Power On – Green (bottom right)
GB GB
Thermostat output on – Red (top left)
Delayed Start active - Green flashing (bottom right)

Delayed Start

An energy saving feature which automatically delays the heating
start time, depending on how close to set-point the ambient
room temperature already is. If the green LED flashes once every
3 seconds the delayed start function is in operation. Delayed
start can be cancelled by turning the setting dial. Delayed start
will operate again on timer control next ON time.
6 RET1000 MD