Title: Brukermanual for Refra varmepumpe.pdf
9. Faulty compressor or contactor coil contactor 10. Firing automatic protection 11. No request for cooling 12. Faulty motor 13. Weak contacts10. Identify and eliminate the cause before re-running the unit 11. Check the regulation. Wait of the request for cooling 12. See paragraph 6, 7,8 13. Check the voltage at the desired contact, tighten all terminalsThe noise of the compressor, high vibration1. Faulty compressor 2. Non-optimal oil injection1. Contact the company REFRA ® 2. Contact the company REFRA ®Relay protect the compressor from overload or circuit breaker or blowing fusesFailure to remove or increase the load compressor1. Low voltage under heavy load 2. Weak contacts the food chain 3. Faulty power lines, causing voltage imbalances 4. Open or short to ground the motor windings. 5. High discharge pressure 1. Faulty compressor capacity control 2. Trouble spool 3. Faulty solenoid valve1. Check for excessive voltage drop 2. Check and tighten all contacts 3. Check voltage