Carrier 69NT40-511-199 User Manual
Page 90
SECT
IO
N
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
* Unit with optional Humidity sensor
** Dehumidification and heating modes do not operate at set points below --10_C (14_F), or --5_C (23_F) optionally
1
-- May be energized in defrost if snap freeze portion of defrost is run.
2
-- May be energized in defrost if probe check portion of defrost is run.