3DJH
31-5000750 Rev. 1
Unit Sequence of Operation
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Yes
No
Yes
No
Room thermostat provides a Y1 or Y2 demand to
the main control.
All switches closed
operating range.
Check for status or
fault codes in the
outdoor control.
(
NOTE
- Refer to low
pressure and high
pressure switch flow
charts for sequence
of operation.
From idle mode
Outdoor Control
1. Sends a demand to the compressor
inverter to start and run the
compressor up to the requested
pumping capacity (Frequency in
hertz).
2. Output signal is provided on PWM
and COM terminals to start and run the
ECM outdoor fan at the demand RPM.
On 24 VAC power-up or outdoor reset, the outdoor control shall perform the following tasks:
1.
Start the anti-short cycle 3-minute delay in the outdoor control.
2.
Check status of the temperature sensor and pressure devices.
3.
If the outdoor control does not detect any error codes, outdoor control sends 24 volts out on the
CNTCTR terminals to pull in the contactor coil. (
Note
- These checks take about 60 seconds.
)
4.
The contactor contacts pull IN and main power is applied to the compressor inverter.
and sensors in
Figure 25. Volt Power-Up or Outdoor Reset
Содержание GE NS22HM
Страница 7: ...3DJH 31 5000750 Rev 1 Figure 2 Component Locations NS22H24MA4 and NS22H36MA4...
Страница 8: ...3DJH 31 5000750 Rev 1 Figure 3 Component Locations NS22H48MA4 and NS22H60MA4 Scroll Compressor Models...
Страница 58: ...3DJH 31 5000750 Rev 1 24 AND 36 HP MODEL Figure 24 Wiring Diagram Unit Wiring Diagram...
Страница 78: ...3DJH 31 5000750 Rev 1 24 AND 36 HP MODEL Figure 45 VAC Voltage Check...
Страница 103: ...3DJH 31 5000750 Rev 1 Figure 54 NS22H24M NS22H36M Charging Label...
Страница 104: ...3DJH 31 5000750 Rev 1 Figure 55 NS22H48M NS22H60M Charging Label...
Страница 105: ...3DJH 31 5000750 Rev 1 Notes...
