Helios KWL EC 700 D Pro Notice De Montage Et D'entretien page 61

Installation and Operating Instructions
Fault
27 - Fault with pressure
sensor of supply air filter
28 - Fault with pressure
sensor of supply air fan
29 - Fault with pressure
sensor of extract air filter
30 - Fault with VAV pressure
sensor (supply air duct)
30 - Fault with VAV-C4
pressure sensor (extract air
duct)
32 - Air quality sensor fault
33 - Humidity sensor fault
34 - Fault with external tem-
perature sensor of BMS
50 - Supply air filter blocked
> 80 %
51 - Extract air filter blocked
> 80 %
70 - Hot water heater bat-
tery frost protection.
71 - Water heater - wait for
the water temperature
72 - Water heater - wait for
the supply air temperature
73 - Free night cooling is
active.
74 - Flow reduction, mini-
mum temperature in duct is
not reached
75 - Passive house pro-
tection
36 - Fault in B circuit board
37 - Condensation tray
overflow
Central Ventilation Units KWL EC 700/1400/2000 D Pro / WW
Unit behaviour
Unit ventilates
Unit does not operate
properly
Unit does not operate
properly
Unit does not operate
properly
Unit does not operate
properly
Unit ventilates
Unit ventilates
Unit ventilates
Unit ventilates
Unit ventilates
Unit ventilates
Unit ventilates
Unit ventilates
Unit ventilates
Unit works in restricted
mode
Unit does not operate
Unit does not operate
Unit does not operate
Problem
Pressure sensor fault
Pressure sensor fault
Pressure sensor fault
Pressure sensor fault
Pressure sensor fault
Air quality sensor malfun-
ction
Air quality sensor malfun-
ction
BMS sensor fault or incor-
rect data
Filter blocked
Filter blocked
Water heat exchanger frost
protection is active
Water temperature evaluati-
on active
Supply air temperature
evaluation.
Temperature evaluation for
the free night cooling
The unit tries to reach the
minimum temperature
The unit works in such a
way that meets the passive
house specification
The unit cannot operate the
peripherals connected to
the B circuit board
Water level in condensation
tray is too high
27
Solution
Check whether the measuring device is damaged or
contaminated. Check the pressure hoses for consistency. If
necessary, replace the pressure sensor module.
Check whether the measuring device is damaged or
contaminated. Check the pressure hoses for consistency. If
necessary, replace the pressure sensor module.
Check whether the measuring device is damaged or
contaminated. Check the pressure hoses for consistency. If
necessary, replace the pressure sensor module.
Check whether the measuring device is damaged or
contaminated. Check the pressure hoses for consistency. If
necessary, replace the pressure sensor module.
Check whether the measuring device is damaged or
contaminated. Check the pressure hoses for consistency. If
necessary, replace the pressure sensor module.
Check whether the air quality sensor is correctly connected.
If necessary, check the functioning of the sensor (output
signal value).
Check whether the air quality sensor is correctly connected.
If necessary, check the functioning of the sensor (output
signal value).
Check address and sensor value in BMS system. Check
functioning of BMS sensor.
Replace filter.
Replace filter.
Automatic protection of water heater battery is active to
prevent damage by low temperatures. This function is auto-
matically ended as soon as the return temperature reaches
the target value.
Process ends automatically.
Process ends automatically.
The preparation for the free night cooling is running. In this
respect, the start conditions for this function are evaluated.
The process ends automatically.
Minimum supply air temperature is not reached. There is an
automatic output correction (supply air fan is turned down).
Minimum supply air temperature for the passive house requi-
rements has not been reached. Automatic process.
Communication with the B circuit board cannot be establis-
hed. Check communication cable between A and B circuit
boards. If necessary, replace B circuit board.
Check sensor connection. Check functioning of sensor and
check whether the unhindered drainage of the condensation
tray is possible.