Lennox VRF VEWCL1E Instruction Manual page 60

Wired Controller VEWCL1E
lower than the set temperature, it will bring fresh air to lower the indoor temperature,
and reduce cooling power consumption to reach energy-saving effect.
Free Cooling at night: after this function is activated, when the system shutdown
at night (both the air conditioner and ERV+DX Coil unit are turned off), if the outdoor
tempberature is lower than the indoor temperature, it will turn on the ERV+DX Coil
unit to intake fresh air and lower the indoor temperature, and maintain the indoor
temperature in a low value in the next day morning, so as to achieve energy
conservation. After it is activated, the start time and finish time should be set.
Lock: under lock status, any button operation are invalid, user should operate
according to the prompt to unlock the function.
Health*: it can turn on or turn off health function.
Energy-recovery mode: when the indoor and outdoor temperature difference is
relatively large, it will adopt the energy-recovery core to reclaim the air discharge
energy to conduct precooling or preheating for the fresh air, so as to achieve energy
conservation.
By-pass mode: when the indoor and outdoor temperature difference is relatively
small, there is no need to reclaim the air discharge energy, the discharged air will go
through the by-pass duct, which has smaller wind resistance and can reduce the
energy efficiency of fan.
Air Discharge mode: when the outdoor temperature is extremely low, in order to
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