How to fix current detecting circuit abnormal of compressor module in Haier Heat Pump?
If the current detecting circuit of the compressor module is abnormal in your Haier Heat Pump, replace the inverter control board with abnormal current detection loop.
What to do if four-way valve reversing failure in Haier MRV 5-RC VP4-450B?
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 MRV 5-RC VP4-450B?
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 VP4-450B 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 fix hardware instantaneous over current of the compressor module rectifier side in Haier MRV 5-RC VP4-450B?
If there is a hardware instantaneous over current on the compressor module rectifier side of your Haier Heat Pump, replace the inverter module.
How to resolve AT24C04 EEPROM communication failure in Haier MRV 5-RC VP4-450B Heat Pump?
To resolve AT24C04 EEPROM communication failure, AT24C04 EEPROM data check failure, or IM EEPROM data or communication failure in your Haier Heat Pump, replace EE.
How to fix emergency stop function switch failure in Haier Heat Pump?
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 VP4-450B?
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 VP4-450B 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 detailed technical specifications for various outdoor unit models.
Illustrates the refrigerant piping layout for the outdoor unit.
Covers general safety and installation guidelines for the outdoor unit.
Lists the technical specifications for the one-by-four valve box.
Covers general safety and installation instructions for the one-by-four valve box.
Lists and explains system failure codes, their descriptions, and remarks.
Provides detailed guidance for diagnosing and resolving system failures and issues.
General| Category | Heat Pump |
|---|---|
| Model | MRV 5-RC VP4-450B |
| Cooling Capacity | 45.0 kW |
| Heating Capacity | 50.0 kW |
| Power Supply | 380-415V/3Ph/50Hz |
| Refrigerant | R410A |
| Operating Temperature Range (Heating) | -20°C to 24°C |
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