How to fix compressor module hardware over current in Haier Heat Pump?
If the compressor module in your Haier Heat Pump experiences a hardware over current issue, the solution is to have it rectified on site by after-sales personnel.
What to do if four-way valve reversing failure in Haier MRV 5-RC AD092MJERA?
In case of a four-way valve reversing failure in your Haier Heat Pump, the suggested solution is to have it correctly replaced by after-sales service on site and ensure the refrigerant is sufficient.
How to fix outdoor compressor discharging temperature (Td1, Td2) too high failure in Haier Heat Pump?
If the outdoor compressor discharging temperature (Td1, Td2) is too high in your Haier Heat Pump, the suggested solution is to have the discharging temperature sensor replaced by after-sales personnel on site.
What to do for fan motor module hardware over current in Haier MRV 5-RC AD092MJERA Heat Pump?
If the fan motor module in your Haier Heat Pump experiences a hardware over current issue, the solution is to replace the fan motor.
How to resolve compressor out of control in Haier MRV 5-RC AD092MJERA Heat Pump?
If the compressor is out of control in your Haier Heat Pump, the suggested solution is to replace the variable frequency control board.
What to do if outdoor unit model are set incorrectly in Haier MRV 5-RC AD092MJERA?
If the outdoor unit model is set incorrectly in your Haier Heat Pump, adjust the setting and re-search outdoor and locked.
How to fix emergency stop function switch failure in Haier MRV 5-RC AD092MJERA?
If the emergency stop function switch fails in your Haier Heat Pump, short circuit the CN18.
What to do if incorrect settings of quantity, address or capacity for outdoor unit in Haier MRV 5-RC AD092MJERA Heat Pump?
If there are incorrect settings of quantity, address, or capacity for the outdoor unit of your Haier Heat Pump, the suggested solution is to research and lock the outdoor unit.
What to do if discharging temperature sensor Td1 and Td2 failure in Haier Heat Pump?
If the discharging temperature sensors Td1 and Td2 fail in your Haier Heat Pump, the solution is to have them correctly replaced by after-sales personnel on site.
What to do if outdoor unit compressor discharging temperature (Td1, Td2) too low failure in Haier MRV 5-RC AD092MJERA Heat Pump?
If the outdoor unit compressor discharging temperature (Td1, Td2) is too low in your Haier Heat Pump, the suggested solution is to have the discharging temperature sensor replaced by after-sales personnel on site.
Lists technical specifications for the VP4-450B valve box: capacity, branches, dimensions, and piping.
Covers safety precautions, valve box installation, and refrigerant pipe connection procedures.
Explains various control functions: compressor, fan, pressure, and defrosting control logic.
Lists failure codes for outdoor/indoor units, descriptions, and specific troubleshooting steps for diagnosis.
Offers a systematic guide to diagnose and resolve common operational issues and system failure codes.
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