Zehnder Rittling Svea eAir, Инструкция по эксплуатации и техническому обслуживанию, Страница: 22 / 28

22
Alarm Reason Instruction Solution
Supply air cold
(TE-10 min)
The HRW controller circuit
board is faulty The HRW motor is controlled by a separate
circuit board that is located in the electric box
of the unit. Contact service.
After heating is disabled Check if after heating is allowed and eco-
mode is off, and there is no heating block
timer program active Change settings if needed
HRW pulley has separated
from the shaft Check from HRW round opening if the shaft is
rotating empty and the pulley is in its place. Contact service.
Tighten the screw on the pulley.
Ducts have inadequate
insulation Check the thickness of the insulation in
supply and extract ducts, and add insulation if
necessary. Contact the installer.
Supply air hot
(TE-10 max)
Fire risk
Electrical after-heating faulty Contact service.
Water heating radiator has a
faulty control valve actuator Contact service.
TE-10 temperature sensor
faulty Check from the measurements menu on
the control panel if the supply temperature
measurement is off the charts. Contact service.
Hot room air
(TE-20 max)
Fire risk Contact service.
TE-20 temperature sensor
faulty Check from the measurements menu on
the control panel if the room temperature
measurement is off the charts. Contact service.
Extract air cold
(TE-30 min)
Ducts have inadequate
insulation Check the thickness of the insulation in supply
and extract air ducts, and add insulation if
necessary. Contact the installer.
The pre-heater overheating
protection has tripped. Find out the cause for the failure and reset the
protection against overheating (R® button in
the radiator). Contact service.
The ventilation unit door is
open Close the door.
Low room temperature Raise the room temperature.
TE-30 temperature sensor
is faulty Check from the measurements menu on the
control panel if the extract air temperature
measurement is off the charts. Contact service.
Extract air hot
(TE-30 max)
Fire risk Contact service.
TE-30 temperature sensor
faulty Check from the measurements menu on the
control panel if the extract air temperature
measurement is off the charts. Contact service.
Electrical
radiator
overheated
(SLP fault)
Electrical post-heating faulty Contact service..
Supply air fan has stopped Open the service hatch. Press the safety switch
with a screwdriver and check, if the fan starts. Contact service.
Change the fan.
Supply air filter is blocked Open the service hatch when the unit is off.
Pull out the filter and check the dirtiness of
the filter. Change the filters
Outdoor louvre blocked Check if the louvre on the outside of the house
is blocked. Contact service.
Clean the outdoor louvre.
The heating controller circuit
board is broken Contact service.
Change the heating controller circuit board.
Water radiator
freezing risk
(TE-45 min)
Heat exchanger belt has
broken A green belt drives the heat exchanger. Check
if the belt can be seen from the HRW round
opening. If it cannot be seen, the belt is
broken. Change the belt