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Raymond WebsterAug 5, 2025
What to do if MT compressor of SCM Heat Pump does not start?
- SSharon CookAug 5, 2025
If the MT compressor of your SCM Heat Pump isn't starting, there could be several reasons: * A blocking alarm might be active. Check for any active alarms and try resetting them. * The unit's regulation status might be OFF. Ensure the unit is switched ON. * Most of the evaporators might be undergoing defrosting. Verify the Defrost setting on mask FBB15, but only if evaporator controllers connect to the CDU via RS485. * It might be necessary to force the download settings from the Hecu Controller to the PSD (power+ driver).