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Remote Control Terminal

(ON-OFF, CN2, Short Connector JR1)

NOTE: Remove the short connector (JR1) when using the ON-OFF function.

Remote Switch Unit Status Demand Response Time

ON (close)

Unit is on. Within two (2) seconds

OFF (open)

Unit is o󰀨. Within two (2) seconds

1. Unit responds to demand; use the remote controller to select the required mode.

2. Unit will not respond to the demand from the remote controller.

NOTE: If the remote switch is o, but the remote controller is on, the CP code appear on the display board.

NOTE: The voltage of the port (CN2) is 12V DC; maximum current is 5mA.

4.5. Dial Codes

NOTE: The SW4 DIP switch is for certied service technical use only.

No. Dial Code Control

Scenario

Function ON OFF Note

1 SW1-2 1,2 Anti-cold blow protection option NO [Default] YES

2 SW1-3 1,2,3 Single cooling / heating and cooling options Cooling [Default] Cooling &

Heating

3 SW2-1 1 Compressor Running (demand working with

heat pump+ Electric heat)

Compressor

slower speed

[Default] Faster

Compressor

Only a󰀨ects

compressor and

4 SW2-1 2 Temperature di󰀨erential to activate rst stage

auxiliary heat(the GAP of T1 and Ts),Wire

controller demand with heat pump+Electric heat

working together

2°F (1°C) [Default] 4°F (2°C)

5 SW2-2 2 Electric heat on delay YES [Default]NO

6 SW2-3 2 Electric auxiliary heating delay to start time 30 minutes [Default] 15

minutes

Based on SW2-2

is ON

Lennox MMA048S4 User Manual

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