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Desired discharge temperature settings
Set the desired outlet temperature setpoint by setting the rotating button on top.
Function description LED lights
LED 1 Flashing with frequency once every 3 seconds Stand by
Flashing with frequency once per second ERV is in operation
Lights up continuously Outlet temperature sensor defective, not connected
LED 2 Lights up when there’s heat demand
Maintenance
Attention: Switch off the power of both the ERV and the after-heater before carrying out any work!
Clean the heating element and other components at least annually and check them for damage.
Malfunction
No heat production No electrical supply (230V), check the power supply,
fuse
Maximum thermostat: reset the locked maximum
thermostat with the button in the cover of the
connection box
Temperature sensor defective: check the resistance
of the sensor (10kΩ at 25 ° C). LED 1 lights up
continuously
Air pressure switch: check if the air ow is at least
1.5m / s
Control board defective: replace it.
ERV release: see description above
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