What to do if compressor module radiator temp. too high in Haier Heat Pump?
If the compressor module radiator temperature is too high in your Haier Heat Pump, troubleshoot the fan and PCB terminal for 220V voltage output.
What to do if four-way valve reversing failure in Haier MRV 5-RC AB122MCERA(M)?
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 AB122MCERA(M)?
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 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 AB122MCERA(M)?
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 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 AB122MCERA(M)?
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 MRV 5-RC AB122MCERA(M)?
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 AB122MCERA(M) 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.
Details technical specifications for various outdoor unit models, including electrical, piping, and performance data.
Provides specifications for the one-by-four valve box models, including capacity, dimensions, and pipe connections.
Shows the electrical connections for the one-by-four valve box PCB, detailing port definitions and component layout.
Explains the control logic for compressors, fans, and other system components, including protection mechanisms.
Lists and explains various failure codes for outdoor units, their digital tube indications, and descriptions.
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