HVACopediaKeepRite · Heat pump
Phase monitor LED off 3-phase monitor - no call for compressor
What the display is showing
The phase monitor LED is dark when there is no call for compressor operation. Nothing is wrong.
Applies to: N4H4/R4H4/WCH4/NXH5 three-phase heat pumps
Models that show this code
5 models in KeepRite N4H4/R4H4/WCH4/NXH5 Heat Pump
Other codes on the same units
- Defrost speed-up pins Speed up the defrost timer for testing
- Phase monitor LED flashing 3-phase monitor - phase reversal
- Phase monitor LED on 3-phase monitor - phases OK
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Source: KeepRite ICP N4H4/R4H4/WCH4/NXH5 Heat Pump Installation Instructions 428 01 5107 10, Table 3 3-Phase Monitor LED Indicators, p.6. Summarized in our own words; check the original manual for your model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.