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SECTION 4
4-15 T-268-07
Table 4-2. Electrical Control Positions -- ABOVE -- 10_C(+14_F), or --5_C(+23_F) optionally
CONTROL CIRCUIT COOLING
Holding Zone
* Dehumidification
HEATING DEFROST
Single-Speed Compressor:
Compressor Contactor
(C)
Energized De-energized ** **
De-energized
1
Two-Speed Compressor in high speed mode:
Compressor Contactor
(CH)
Energized De-energized ** **
De-energized
1
Compressor Contactor
(CS)
Energized De-energized ** **
De-energized
1
Compressor Contactor
(CL)
De-energized De-energized ** **
De-energized
1
Two-Speed Compressor in low speed mode:
Compressor Contactor
(CH)
De-energized De-energized ** **
De-energized
1
Compressor Contactor
(CS)
De-energized De-energized ** **
De-energized
1
Compressor Contactor
(CL)
Energized De-energized ** **
De-energized
1
Condenser Fan
Contactor (CF)
Energized De-energized Energized De-energized De-energized
High Speed Evaporator
Contactor (EF)
Energized Energized
Refer to section
3.1.7.a.2
Refer to
section
3.1.7.a.2
De-energized
2
Low Speed Evaporator
Contactor (ES)
De-energized De-energized
Refer to section
3.1.7.a.2
Refer to
section
3.1.7.a.2
De-energized
Defrost Relay (TF) De-energized De-energized De-energized De-energized Energized
Heater Relay (HR) De-energized De-energized Energized Energized Energized
INDICATING LIGHTS
Cool ON OFF ON OFF OFF
Defrost OFF OFF OFF OFF ON
In-Range On -- If In-Range (Refer to paragraph 3.1.4, Code 30)
Heat OFF OFF ON ON ON
POWER CIRCUIT
Compressor Energized De-energized Energized De-energized De-energized
Condenser Fan Motor Energized De-energized Energized De-energized De-energized
Heaters De-energized De-energized Energized Energized Energized
Evaporator Fan Motors Energized Energized Energized Energized De-energized
* U nit with optional Humidity sensor
** Dehumidificationandheatingmodesdo notoperateat set pointsbelow --10_C(14_F), or -- 5_C(23_F)optionally
1
-- May be ener gized in defrost if snap freeze portion of defrost is run.
2
-- May be energized in defrost if probe check portion of defrost is run.