3 Keypad Layout
3.1 User keypad (3 Buttons)
Heat Button - (Note: this facility may be limited or disabled by the User).
If heating is ON (via programme)
- pressing the Heat button for less than 2 seconds overrides the programme to OFF. Any extension time that has
been set is cancelled.
- pressing the heat button for more than 3 seconds determines that heat will remain on for an extension time after
the programmed off time. The extension timer will increase in 30 minute steps, up to the maximum allowed
period, and then revert to 0 minutes. Release the button when the required extension period is showing.
Heat
If heating is OFF (via override)
- pressing the Heat button removes override and reverts to the current programme.
If heating is OFF (via programme)
- pressing the Heat button for less than 2 seconds brings on heating for 30 minutes.
- pressing the heat button for more than 3 seconds will increase the on time in 30 minute steps, up to the maximum
allowed period, and then revert to 0 minutes. Release the button when the required heating period is showing.
Fan Button -
In WINTER mode and OFF mode, the Fan button has no control over the air heater fan.
In SUMMER mode, the Fan button switches on the fan for air circulation, and another press switches it off. If the
fan is left on, it will be automatically switched off at midnight. If the fan is running because the heating is on and
Fan
the fan is in Auto or Const mode, the Fan button cannot switch it off.
If the fan is in On mode, it always runs, in WINTER, SUMMER and OFF. The Fan button cannot switch it off.
Reset Button - Press to reset the burner controls from lockout, (when this facility is available on the heater).
Reset
3.2 Indicators
Heating On - Is illuminated when the MC200 is calling for heat (It does not confirm that the heating is actually
working). It shows Red when the heater is a single-stage burner, Green when the heater is a Hi-Low type, and
Yellow when the heater has a Modulating burner.
Fault - Flashes when the burner control is at lockout, solid light when a service call is due (if this has been set) or
when there is a sensor fault. The bottom line of the display will alternate between normal display and type of fault.
3.3 Display
The display normally shows
-
the current air temperature as measured by the sensor, or the average temperature if two sensors are fitted.
-
the time of day using 24-hr notation. The colon flashes once per second to confirm that the clock is running.
-
the day of the week. Programmes are associated with individual days of the week or day-groups such as weekday or
weekend.
-
the current setting of the heater: ON or OFF, as determined by the internal programmes (the display will say ON even if
the MC200 is not currently calling for heat because the thermostat is satisfied) or
-
for High/Low and Modulating burners an indication of the heat demand: HEAT HI or HEAT LO for Hi-Low burners, or a
simple bar-graph display for modulating control heaters where 1 bar is low fire and 10 bars is high fire.
-
Pn where n represents the active programme number.
3.4 Programming keypad (6 Buttons)
Select Button - Press to accept changes.
OK
Select
Decrease Button - Press to decrease values.
Decrease
Increase Button - Press to increase values.
Increase
Cancel Button - Press to exit without saving
change values.
Quit
Back Button - Press to enter User Menu, go
back to previous screen.
Back
Next Button - Press to to enter User Menu,
go forward to next screen.
Next
2
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