Error Code Ph
Summary:
Ambient Temperature Limited
Possible Cause:
- Ambient temperature beyond the operating range
- T4 sensor fault
Troubleshooting:
- Is the temperature below or above the operating temperature - The main board is protecting the unit (Cooling 0-125°F)
- If the T4 sensor fails - Replace the sensor (chart below)
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.