drexel und weiss aerosmart L, Эксплуатация, техническое обслуживание и пусконаладка

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aerosmart - Operation, Maintenance and Commissioning Page 22
Faults
Error Messages
The messages described here are displayed on both the micro-processor controller and
the digital room operating panel. The faults cannot be acknowledged until they have been
resolved. If several faults occur simultaneously, use the up
'
↑
'
and down
'
↓
'
arrow buttons
to scroll through the error messages.
If a fault cannot be acknowledged by holding down the Enter button (2 sec), please con-
tact your customer service technician.
Warning: Electrically conductive components can cause serious personal injury! Im-
proper working procedures could damage unit components. The inner inspection cover
may only be opened by authorised technicians.
Alarm Niederdruck-Pressostat:
Check if the air quantity is too low due to a closed air line. (E.g. very dirty exhaust air fi lter,
contaminants in the air line).
The following operating conditions are not permissible for the heat pump: room temperature
too low; outside air entrance temperature from the ground source heat exchanger too low;
lack of cooling agents
Alarm Hochdruck-Pressostat:
Air quantity too low. The heat cannot be dispersed via the air. (E.g. minimum air quantity set
too low, frozen outside air grid in winter)
Zuluftventilator ausgefallen / Abluftventilator ausgefallen
A valve has failed. If the fault cannot be acknowledged by holding down the Enter button
(2 sec), please contact your customer service technician.
Blocktemperatur zu tief
The following operating conditions are not permissible for the heat pump: room temperature
too low; outside air entrance temperature from the ground source heat exchanger too low;
block gauge faulty; extract air fan faulty or dirty.
Low air quantity and very damp extract air
Closed extract or exhaust air line
Fühlerfehler Verdampfer / Boiler unten / Mitte
Temperature gauge/cable faulty / connector loose; all the system's temperature gauges are
monitored. If the lead to a sensor is disconnected, a gauge provides meaningless values
or a short-circuit occurs, a relevant error message is issued and an emergency program is
enabled.
Übertemperatur Boiler Wärmepumpe aus
1. Storage tank temperature above 68°C - unit automatically switches to fan level 3; blocked
supply air fi lter or fi ne particle air fi lter, authorised technicians to check ground source heat
exchanger.
2. Storage tank temperature above 73°C - storage tank overheats, system switches off;
shortly after the initial commissioning (approx. 20 minutes), check if the DW storage tank is
fi lled with water. If necessary, fi ll the DW storage tank with water.
While heating the building envelope; if no warm water has been taken from the DW storage
tank for a long time. Remove warm water.
If the fault reoccurs within a short timeframe, check if the coarse particle fi lter and the fi ne
particle air fi lter have become extremely dirty (possibly through construction dust). If the fault
reoccurs, contact customer service technician.