27We reserve the right to make technical changes | 83055600dUK – Translation of the original instruction manual (HMD 2) | ait-deutschland GmbH
As long as the ventilation program is active, the corresponding
program symbol will appear in the navigation screen :
Fix startup parameters
page 9, “Fix startup parameters“
Back up error memory externally
NOTE
Use of the function requires customer service access.
The internal error memory of the heating and heat pump control-
ler can be copied to a USB stick. In doing so, a maximum of the
last 100 errors that occurred are copied.
Ventilating the system
The menu is not shown in full here.
Heat.sys.pump Heating and oor heating circulating
pump
suppl.pump additional circulating pump
DHW pump Domestic hot water circulation pump
fan-heats.pump Fan, well or brine circulation pump
MC open 1 Mixer 1 OPEN
MC close 1 Mixer 1 CLOSE
CP Circulation pump
fan nozzle heating Fan nozzle heating
open exp. valve In LWD the expansion valve opens
completely for the set running time.
Duration Running time of the ventilation
1. Activate and select system part(s) to be ventilated.
2. Activate and select menu eld “duration”, set running time
(hour cycle).
Duration
Factory setting: 1 hour
Value range for running time = 1 – 24 hours.
Save settings.
NOTE
If circulating pumps are selected, the ventilation program
will start immediately after the settings have been saved.
The ventilation pauses after one hour for 5 minutes and
then automatically continues afterwards.
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