To Next PageTo Next PageWhat to do if the high pressure switch is open on my Friedrich VERT-I-PAK VHA18K50RTQ Heat Pump?
If the high pressure switch is open in your Friedrich Heat Pump, it could be due to a faulty pressure switch or the discharge pressure being too high. Check the connection points and confirm system pressures and operation. If operating in cooling mode, ensure the outdoor condensing fan motor is running.
What causes a high pressure switch lockout in a Friedrich VERT-I-PAK VHA18K50RTQ Heat Pump?
If the high pressure switch lockout occurs on your Friedrich Heat Pump, it could be caused by a faulty pressure switch or excessively high discharge pressure. Begin by checking the connection points. Next, verify the system pressures and overall operation, taking corrective measures as necessary. If the unit is in cooling mode, ensure that the outdoor condensing fan motor is functioning correctly.
Why is the low pressure switch open on my Friedrich VERT-I-PAK VHA18K50RTQ?
If the low pressure switch is open on your Friedrich Heat Pump, it could be due to a faulty pressure switch or the suction line pressure being too low. Check the connection points and confirm system pressures and operation, addressing any issues found. Also, if in cooling mode, ensure the indoor blower is running.
What does it mean when the low pressure switch lockout occurs on a Friedrich Heat Pump?
If a low pressure switch lockout occurs with your Friedrich Heat Pump, the possible cause is a faulty pressure switch or suction line pressure that is too low. Start by confirming the connection points. Then, check the system pressures and operation, and address any issues. If the unit is cooling, verify that the indoor blower is running.
How to fix a coil sensor failure on a Friedrich Heat Pump?
If your Friedrich Heat Pump displays a coil sensor failure, it means an open or shorted sensor has been detected. First, check the connection points. Then, use an ohmmeter to test the sensor to see if it's open (OL) or shorted (0.0 Ohms). If the sensor tests ok, replace the board. Refer to Appendix 1 (Thermistor resistor values).
What causes an ambient sensor failure in a Friedrich VERT-I-PAK VHA18K50RTQ Heat Pump?
If your Friedrich Heat Pump is showing an ambient sensor failure, this indicates that an open or shorted sensor has been detected. Begin by checking all connection points. Next, use an ohmmeter to check the sensor for an open (OL) or shorted (0.0 Ohms) circuit. If the sensor appears to be functioning correctly, the next step is to replace the board. For reference, see Appendix 1 (Thermistor resistor values).
How to troubleshoot a Friedrich VERT-I-PAK VHA18K50RTQ Heat Pump with a control fault (no power)?
If your Friedrich Heat Pump is experiencing a control fault and has no power, confirm the incoming voltage. If voltage is present, replace the board.
General| Refrigerant | R-410A |
|---|---|
| Voltage | 208/230V |
| Phase | 1 |
| Compressor Type | Rotary |
| Frequency | 60 Hz |
| Cooling Capacity | 17, 500 BTU/h |
Explains LED indicators for troubleshooting.
Explains the function and operation of the 4-way reversing valve.
Procedure to test the continuity and grounding of the coil.
Describes how to check the reversing valve's shifting.
Chart correlating symptoms with causes and corrections for reversing valves.
General procedures for checking compressor health, including L.R.V.
Tests for resistance, grounding, and compressor efficiency.
Key points for working with R-410A refrigerant systems and required equipment.
Explains the importance and methods of refrigerant charging.
Details the weighed-in charge method for R-410A systems.
Identifies symptoms and checks for undercharged systems.
Identifies symptoms and checks for overcharged systems.
Describes symptoms and checks for refrigerant restrictions.
Steps for replacing the compressor, including safety and procedures.
Detailed steps for replacing the reversing valve.
Procedure for replacing the Thermal Expansion Valve (TXV).
Wiring diagrams for 208/230V models.
Wiring diagrams for 265V models.
