EcoSmart ES50LVS, Installation, Operation And Maintenance Manual

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Dehumidification
When in cooling mode, a dehumidification function can be set using system switch 3 as follows:

OFF - Normal cooling fan runs at rate set by COOL CFM switch

ON - Fan Cooling runs at lower COOL CFM rate for 15 min. and then goes to higher rate
Fan Mode

R is connected to G

If fan is set to “ON” on thermostat, fan runs as follows:

If OPTION switch 1 is OFF, fan runs at selected HEAT CFM rate

If OPTION switch 1 is ON, fan runs at 300 CFM (ES50LVS), 400CFM (ES90LVS)

If fan is set to “OFF” on thermostat, fan runs at HEAT or COOL CFM settings
Constant Low Fan Circulation
Fan may be run at a low rate using OPTION switch 1 as follows:

OFF – fan runs at rate set by HEAT CFM switch

ES50LVS runs at 300 CFM, ES90LVS runs at 400 CFM
Condenser Lockout
If the air out falls below 40°F, the condenser will turn off until the temperature warms. This is
to prevent DX coil ice-up. This accomplished by breaking the connection at the C terminal from
the 24VAC return.