I have just had a Greenstar 37DCi installed and a DT20RF digital thermostat.
When I press the "Select" button I should be able to cycle through the four central heating modes, OFF, TIMED, ONCE, ON. Pressing the button has no effect and the display arrow stays next to ON. The only way I can move the arrow to ON or OFF is to press the OK button. The times are set but I cannot select the TIMED or ONCE modes.
The select button for the Hot water works fine and I can cycle through the four options.
Any suggestion?
When I press the "Select" button I should be able to cycle through the four central heating modes, OFF, TIMED, ONCE, ON. Pressing the button has no effect and the display arrow stays next to ON. The only way I can move the arrow to ON or OFF is to press the OK button. The times are set but I cannot select the TIMED or ONCE modes.
The select button for the Hot water works fine and I can cycle through the four options.
Any suggestion?
