Troubleshooting
Samsung Electronics 4-27
4-4-19 Prohibiting cooling and heating maneuvers error
Indoor unit display
(Prohibiting heating maneuver error)
(Prohibiting cooling maneuver error)
Outdoor unit display
●
(YEL)
◎
(GRN)
○
(RED)
1. Cause of malfunction
1) Problematic temperature sensor
2) Faulty sensor itself
2. Check procedure
1) Check connection condition of temperature sensor to the outdoor unit PBA
2) Check outside temperature (Prohibiting cooling: under -5°C, prohibiting heating: over 30°C)
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