Error code P1
Summary:
High-Pressure Switch Reverse Protection
Possible Cause:
- High-pressure switch for System A is connected to CN10 and System B is connected to CN13
Troubleshooting:
- Verify that System A is connected to CN13 and that System B is connected to CN10
| CN13 | High Pressure in A System | Input | 24VAC |
| CN10 | High Pressure in B System | Input | 24VAC |
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.