Viessmann AWO-M-AC 101.A06, Assembly And Servicing Instructions

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13 USER INTERFACE - CONTROLLER
The unit includes a display placed underneath a hinged polycarbonate transparent door with a protection
rating of IP67.
The interface has a part with variable text and a series of icons identifying operation of the unit as shown in
the table below.
Compressor LED

ON if the compressor is running

OFF if the compressor is off

FLASHING if pending the timed compressor start
Domestic hot water LED
 ON if sanitary mode enabled

OFF if sanitary mode disabled

FLASHING if DHW production in progress (sanitary valve on)
Defrost LED

ON if defrosting enabled

OFF if defrosting disabled or finished

FLASHING if defrosting time interval count in progress
Antifreeze heater LED

LED ON if antifreeze heater on.
Pump LED

LED ON if pump running.
Alarm LED

LED ON if an alarm is triggered.
Heating mode LED 
LED ON if unit is in heating mode.
Cooling mode LED 
LED ON if unit is in cooling mode.
The buttons have the specific function described below
Select the operating mode and manually reset any alarms.
Each time you press the key you have the following sequence:
off

cool

heat

off
If DHW is enabled, the sequence is the following:
off

cool

cool+san

heat

heat+san

off
While setting the parameters, this key has the function of sending BACK by one
level.
Mode
Esc