Troubleshooting - Helios ECgreen Vent KWL EC 800 S Pro WW Notice D'installation Et D'utilisation

Installation and Operating Instructions
EN
6.9

Troubleshooting

Fault
4 - Supply air fan fault
5 - Extract air fan fault
6 - Supply air filter blocked
7 - Extract air filter blocked
8 - Preheater 1 failure
9 - Preheater 1 fault
12 - CO2 sensor fault
16 - Supply air - Faulty
outside air temp. sensor
(T-EXT1)
17 - Supply air - Faulty tem-
perature sensor behind the
heat exchanger (T-EXT2)
18 - Supply air - Faulty
temperature sensor in the
supply air duct (T-EXT3)
19 - Supply air - Fault with
temperature sensor behind
the second heater battery
(T-EXT4)
20 - Extract air - Faulty
temperature sensor in the
extract air duct (T-INT0)
20 - Extract air - Faulty
temperature sensor in the
extract air duct (T-INT1)
22 - Extract air - Faulty frost
protection temperature
sensor in heat exchanger
(T-INT2)
23 - Faulty temperature
sensor for the hot water
heater battery water return
(T_WATER_IN)
24 - Faulty temperature
sensor for the water return
(T_WATER_OUT)
25 - Faulty room tempera-
ture sensor (T_Room)
26 - Fault with pressure
sensor of extract air filter
Central Ventilation Units KWL EC 800 S/1200 S/1800 S/2600 S Pro/WW
Unit behaviour Problem
Unit does not operate Fan overheating or damage
to the thermal contacts of
the supply air fan
Unit does not operate Fan overheating or damage
to the thermal contacts of
the extract air fan
Unit ventilates Filter blocked
Unit ventilates Filter blocked
Unit ventilates Pre-heater overheated
Unit ventilates Pre-heater overheated
Unit ventilates Air quality sensor malfun-
ction
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit does not operate Temperature sensor fault
Unit ventilates Temperature sensor fault
Unit ventilates Pressure sensor fault
Solution
Determine cause of fan overheating (faulty bearing, mechani-
cal problem, short circuit,...). If necessary, replace the fan.
Determine cause of fan overheating (faulty bearing, mechani-
cal problem, short circuit,...). If necessary, replace the fan.
Check condition of filter and replace if necessary.
Check condition of filter and replace if necessary.
Check whether the air can freely flow through the unit and
the electrical pre-heater is cooling sufficiently. Check the
triggering of the safety temperature limiter.
Check whether the air can freely flow through the unit and
the electrical pre-heater is cooling sufficiently. Check the
triggering of the safety temperature limiter.
Check whether the CO2 sensor is correctly connected. If
necessary, check the functioning of the CO2 sensor (output
signal value).
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the sensor is correctly connected to the
electronics. If necessary, carry out function test on sensor
using resistance measurement (the resistance value at +20°C
is around 10kW)
Check whether the measuring device is damaged or
contaminated. Check the pressure hoses for consistency. If
necessary, replace the pressure sensor module.
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