To reset a pressure switch on a heat pump, particularly a high pressure switch, you will typically locate the switch and press a reset button.
Pressure switches are important safety devices in your heat pump system. They monitor the refrigerant pressure and shut the system down if pressure levels go outside the safe operating range, preventing damage. One common type that can often be manually reset is the high pressure switch, which trips when the refrigerant pressure becomes too high.
Step-by-Step Guide to Resetting the High Pressure Switch
According to the provided reference, you can reset the high pressure lock by following these steps:
- Locate the Switch: Find the high pressure switch. It is typically located near the compressor unit of your heat pump's outdoor system.
- Identify the Switch: The switch is described as a cylindrical device piped into the refrigeration system. It will have two wires connected to it and a red button on the top.
- Press the Reset Button: Once you have found the switch and confirmed its appearance, push the red button on the top. This action resets the high pressure lock.
- Restart the Unit: After resetting the switch, push the rocker switch (often found on the air handler or adjacent disconnect) to restart the heat pump unit.
What the High Pressure Switch Looks Like
As described in the reference, the high pressure switch you are looking for is:
- Shape: Cylindrical
- Location: Piped into the refrigeration system near the compressor
- Connections: Has two wires connected
- Reset Mechanism: Features a red button on the top
Summary of Reset Process
| Step | Action | Location/Component |
|---|---|---|
| 1. Locate Switch | Find the high pressure switch | Near the compressor |
| 2. Identify Switch | Look for cylindrical device with 2 wires | Piped into refrigeration system |
| 3. Reset Lock | Push the red button | On top of the switch |
| 4. Restart Unit | Push the rocker switch | System disconnect/air handler |
Note: Resetting a tripped pressure switch only addresses the safety lockout. The underlying issue that caused the pressure to become too high must be identified and corrected to prevent repeated trips and potential system damage.
